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TF-Series - Nordic Geothermal Heat Pump

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1. SYM sentence M ER Page 50 dE T 50 Standard Capacity Ratings U ones seems IE 50 Capacity Ball dS a ae MU SI Or UR DUUM NEC NU Page 52 Pydronic Capacity 21 11 0 eva EAE en Page 57 e EERE E 60 Aquastat Connection Diagram Page 61 Electrical Diagrams 208 230 1 60 RE NENNEN CES 62 ue Rr 64 APPENDIX A Control Board Specifications 1 67 APPENDIX B ECM Fan Airflow Tables ce ness eonun EAE EAEE ESEA PAGE 68 WARRANTY INFORMATION de do ee de ee MIR PAGE 72 001223MAN 04 Page 4 01 JAN 2014 Tables Diagrams and Drawings TABLES Table 1 Thermostat Signal Description 1 6 Table 2 Aq
2. 51 52 STAGE 1 STAGE 2 NC NO C NC C NO 1 1 D fet 1 CC PAS MA 1120 JY KL KL TW ANA J Aquastat Connections Description Use 18 4 thermostat wire for two stag models or 18 3 for single stage models Connect CA from Heat Pump Electrical Box Aquastat Connections to COM in Aquastat Connect RA from Heat Pump Electrical Box Aquastat Connections to 24V in Aquastat and C of Stage 1 S1 and for two stage models also connect to C of Stage 2 S2 Connect from Heat Pump Electrical Box Aquastat Connections to NO of Stage 1 51 in Aquastat For two stage modelsConnect from Heat Pump Electrical Box Aquastat Connections to NO of Stage 2 52 Aquastat Chris Geddes 05 FEB 10 Petitcodiac NB MARITIME GEOTHERMAL Chris Geddes 05 FEB 10 Parallel TFH Seres Aquastat Connection Diagram Size Drawing Number REV SHEET REV ECO IMPL BY APVD BY DATE ee A 001224CDG 01 1 of 1 01 JAN 2014 Page 61 001223MAN 04 ELECTRICAL DIAGRAMS 208 230 1 60 L1 L2 TF Series Schematic Diagram Circulator Pumps Circulator Pumps 208 230VAC SN 15 2 0 1115 2300 208 230 1 60 Single Two Stage Scroll messa
3. 60 Table 28 Plenum Heater Electrical Information 0 60 DIAGRAMS Diagram TF Control System Flow Chart Air Priority Page 9 Diagram B TF Control System Flow Chart Hydronic Priority Page 9 Diagram C Typical P T Pete s Plug amp Thermometer Stem Page 25 Diagram D Typical Purge Eon SERE u uu uuu cO Mese anne ere Page 25 Case Details VieWsS u uuu mmt Page 64 Case Details Left Return CV Page 65 Case Mt Page 66 DRAWINGS 000344CDG Typical Heating Only Zone Connection Diagram TF amp DXTF Series Page 12 000970PDG Single Unit Connection to DHW Pre Heat Tank Brass FPT Page 13 001201CDG Typical Duct and Condensate Connections Modular Case Page 16 001046PDG Typical Buffer Tank Configuration Four Port Tank Brass Page 19 000530PDG Typical Zone Types for Hydronic Applications
4. 11 SIZING AND DUC PAGE 14 Heat PUMP SIZING Essence Page 14 D ct Systems General uuu II Page 14 Duct Systems Grill Layo Ju Aa eee eee ane ace seen de an ni ue Page 14 Thermostat LOCATION in cesse secs Page 15 axial Bic QS iori PR Page 15 Condensate Drain EHE 15 Duct SNO GUIE siessen Re Page 17 HYDRONIC INFORMATION PAGE 18 Hydronic Systems General uuu ne canne ane Page 18 Hydronic System sacs seen tee nee Page 18 GROUND WATER SYSTEM INFORMATION nnne 22 General ReguUirement III Deco 22 PI MOINO the Meal PUMP Page 22 Pipe uuu l Page 22 Water Discharge Methods 2 0 4 22 GROUND LOOP SYSTEM INFORMATIONS dos
5. dos PAGE 25 Circulator Pump MOUSE U es Ge Page 25 Flushing amp Purging the Ground Loop Page 25 Adding ANIME ZS SOON Page 26 Inilial Page 26 ER AR Re Page 26 STARTUP PROCEDURE aan nn ma se en M Page 28 INSPECTION i uuu l Page 28 Unit Startup Air Pe Page 29 Slanup Record AI e 30 rp Hdi 31 Startup Record HydEFODIE 32 GENERAL MAINTENANCE uuu PAGE 33 TROUBLESHOOTING GUIDE 2 nine doses sauna ananas too este anse een eine PAGE 34 5 Page 46 Belrigeration Circuit Diagrams uuu l l EE KRAMER M RE RI RS ice tone Page 47 MODEL SPECIFIC INFORMATION inner nennen suse mese eens nena nesses se PAGE 50 Henigerant Charge Charl
6. Compressor Accumulator IN NB 000217 D RHEAULT D RHEAULT 01 JAN 14 MARITIME GEOTHERMAL Hi 2 D RHEAULT 12 JAN 10 000192 D RHEAULT D RHEAULT 01 JUN 12 rawing Name Modular Parallel TF Refrigeration D RHEAULT 12 JAN 10 2225 000166 C GEDDES GEDDES 01 DEC 10 Circuit Air Cooling Mode Size Initial Release D RHEAULT D RHEAULT 12 JAN 10 Drawing Number REV SHEET Approved By Date Eco IMPLBY BY pare gt Pe 001198RCD 04 1 of 1 001223MAN 04 Page 48 01 JAN 2014 REFRIGERATION CIRCUIT DIAGRAMS continued TF MOD PAR REFRIGERATION CIRCUIT HYDRONIC HEAT MODE Condenser gt INDOOR OUT Hydronic Condenser AIR HANDLER FOR SPLIT SYSTEMS INDOOR IN Open to Suction Line Low Pressure Glass ya Cut out 1 Closed Loop DHW Low Pressure EUN I Cut out 2 i Open Loop Drier a Service Service Port Port aise B ressure ou Cut out NE Optional Desuperheater ACTIVATION TABLE ENERGIZED RV 1 NO Evaporator RV 2 YES NC 1 NO NOTE NC 1 is OPEN when energized Compressor Accumulator lt OUTDOOR IN D RHEAULT 12 JAN 1 GEOTHERMAL 17 MARITIME MALI cs Drawing Name Modular Parallel TF Refrigeration es Ci
7. 1 copper lines Insulate with 1 1 4 pipe insulation Zoned On Demand System HEAT PUMP re CONNECTIONS from well Bal J Ball Ball Valve Valve Valve 25 125psig HOT OUT DHW OUT L T ud PRV to house 1 2 n or mixing Bal Check Insulated 120 140 F Domestic 50 60 C Drain Hot Water NOTE 1 2 COPPER LINES ui Refer to DO NOT USE PEX a the heat Insulate with 5 8 pipe insulation an pump labels for OPTIONAL must install both connection Hot i 125pisg 1 2 locations PRV Bal Water Valve Tank Insulated Domestic DHW IN 1 copper lines Zone Zone Valve Insulate with Return 1 1 4 pipe insulation NOTE Header NOTE 1 Ensure transfer rate of It is assumed that the Zone Buffer Zone tank exchanger is at minimum tank has a circulator expansion tank Supply the capacity of heat pump etc Header at open loop conditions MARITIME GEDTHERMAL o SENE NNI 1 Approved ENG Drawing Name Single Unit Connection toOn Demand 05 FEB 10 Rooroved 5 DHW Pre Heat Tank Brass FPT Initial Release GEDDES GEDDES 129 JUN 09 Size Drawing Number REV SHEET A 001055PDG 02 1 of 1 n i da 001223MAN 04 170 Plantation Rd Ground Water System Information GENERAL REQUIREMENTS 1 The temperature of the well wa
8. N O1 10 242 40 761 11 943 46 150 13 522 51 148 14 986 57 798 16 935 64 897 19 015 71 851 21 052 6 194 32 1 6 437 2 83 104 0 126 168 111 4 6 070 31 8 6 313 3 12 1040 126 16 8 112 0 6 028 31 9 6 256 3 38 1040 127 16 8 112 6 5 965 31 6 6 194 3 71 104 0 127 16 8 113 4 5 898 31 3 6 127 4 08 104 0 127 16 8 114 2 5 911 31 3 6 139 4 41 104 0 128 16 8 115 0 Te 230 1 60 208 3 60 40 0 400 40 0 400 40 0 40 0 52 2 52 2 52 2 52 8 52 8 52 8 53 3 1 060 1 060 1 060 1 060 1 060 1 060 1 060 43 7 44 1 44 5 44 8 45 2 45 7 46 1 3 7 7 4 4 1 8 0 4 5 8 6 4 8 9 4 5 2 10 2 5 7 11 0 6 1 16 596 62 270 18 245 67 235 19 700 72 087 21 121 78 523 23 007 85 394 25 020 92 391 27 070 O 3 D n 2 9 N U N Dn lt 01 2014 59 001223MAN 04 ELECTRICAL TABLES Table 24 Heat Pump Electrical Information 208 230 1 60 Circulators Breaker Size MEURT oo 279 326 4 39 o 60 ER UU IE 5 ma Compressor 186 82 35 E 236 96 40 sommer Models are single stage 41 9 44 7 70 505 oO In Outdoor Ci
9. Page 20 001055PDG Single Unit Connection to On Demand DHW Pre Heat Tank Brass FPT Page 21 000907CDG Typical Ground Water Installation for Size 25 75 Heat Pumps Brass FPT Page 23 000619INF Ground Water Disposal Methods Page 24 000906CDG Geo Flo Circulator Pump Module Installation Page 27 001197RCD Modular Parallel TF Series Refrigeration Circuit Diagram Heating Mode Page 47 001198RCD Modular Parallel TF Series Refrigeration Circuit Diagram Cooling Mode Page 48 001199RCD Modular Parallel TF Series Refrigeration Circuit Diagram Hydronic Heating Mode 49 001244CDG Modular Parallel TF H Series Two Stage Compressor Aquastat Connection Diagram Page 61 001453SCH TF HAC P 1T DE Parallel Schematic Diagram Page 62 001454ELB TF HAC P 1T DE Parallel Electrical Box Diagram Page 63 01 JAN 2014 Page 5 001223MAN 04 Installation Information UNIT DESCRIPTION The TF Series unit is a high efficiency two stage geother mal heat pump with environmentally friendly R410a refrigerant Two stage units offer longer runtimes and fewer
10. rs edaes n P By ENE ae Name TF HACW P 1 DE 18 APR 2011 000217 5 GEDDES 01 JAN 2014 Etre 66468 LE Schematic Diagram Initial Release C GEDDES C GEDDES 16 FEB 11 T TE Size Drawing Number Drawing SHEET rove wrt Bv BY DATE A 001453SCH 02 001223 04 62 01 JAN 2014 ELECTRICAL DIAGRAMS 208 230 1 60 continued Field TF Series Electrical Box Diagram Wiring 208 230 1 60 Single Two Stage Scroll ECM Fan Modular Parallel Design 24VAC 2 Low Voltage Wiring 24VAC Plenum Heat Control Connections Board Thermoststat Wiring Airflow Use an 18 8 7 for 1 stage conductor cable Connect Reduction rege the eight Thermostat Connections in the electrical box Connections Must 2 _ 1 to the corresponding letters on the thermostat set to 12secs 3 Flow C 24VAC Common Thermostat Y1 Select Heat Y1 Stage1 Heat Cool Compressor On Off Connections Relay Relay Relay RH 24VAC Hot L Trouble Indicator W2 Stage3 2 for 1 stage Heat Plenum Heater O Cooling Reversing Valve Y2 Stage2 N A for 1 stage Heat Cool S2 Solenoid Airflow Reduction Wiring Use 18 2 conductor cable to connect Connections Electrical Box AR1 2 to
11. GEOTHERMAL Installation and Service Manual TF Series Modular Design Two Stage R410a Model Sizes 45 80 3 6 Ton Triple Function Geothermal Heat Pumps ENERGY STAR RIGHT RETURN Ai CERTIFIED WAW tory arg Water Source ANSUAHRUASHRAENSO13256 1 05 Maritime Geothermal Ltd Email info nordicghp com Box 2555 Web www nordicghp com Petitcodiac 42 6H4 Document Number 001223MAN 04 Ph 506 756 8135 REVISION DATE 01 JAN 2014 N SAFETY PRECAUTIONS N WARNING Ensure all access panels are in place and properly secured before applying power to the unit Failure to do so may cause risk of electrical shock WARNING Before performing service or maintenance on the heat pump system ensure all power sources are DISCONNECTED Electrical shock can cause serious personal injury or death WARNING Heat pump systems contain refrigerant under high pressure and as such can be hazardous to work on Only qualified service personnel should install repair or service the heat pump CAUTION Safety glasses and work gloves should be worn at all times whenever a heat pump is serviced A fire extinguisher and proper ventilation should be present whenever brazing is performed CAUTION Venting refrigerant to atmosphere is illegal A proper refrigerant recovery system must be employed whenever repairs require removal of refrigerant from the heat pump
12. ENG Approved By MFG Date Initial Release GEDDES c GEDDES 06 SEP 07 ____ _ IMPL BY APVD BY DATE Drawing Name Typical Zone Types for Hydronic Applications Size Drawing Number REV SHEET 000530PDG A 001223MAN 04 Page 20 01 JAN 2014 Single Unit Connection to On Demand Domestic Hot Water Pre Heat Tank Dedicated On Demand System No other zones Domestic CONNECTIONS from well Ball gt Probe Ball 1 Ball Valve Valve 12 1 Valve Domestic Dry Well 125psig 125psig Moss HOT OUT DHW OUT E Ex PRV to house 1 2 1 2 mixing Check 120 140 F valve Boil Valve Val 60 Drain Domestic 50 60 C Hot Water 1 2 COPPER LINES i Indra DO NOT USE PEX Insulate with 5 8 pipe insulation Electric or Gas NOTE Refer to the heat pump labels for OPTIONAL must install both connection Hot i 125pisg 1 2 locations PRV Water Valve Tank Insulated Domestic DHW IN Pressure OPTIONAL NOTE Gauge indoor must install the circulator 1 0 60PSIG 7 2 1 does not have a Circulator Boil Valve Boiler 1 2 INDOOR IN f Drain Drain Bal check then HOT IN le i Valve a zone valve 4 Circulator with 125pisg Should be installed check valve and dpt PRV to prevent flow lat INDOOR OUT due to convection HOT OUT
13. 2 R410a 565psig Airflow AR1 Control N N 2 1 White Black Stripe NOTE For 208VAC move the red wire G connected to the 240 terminal of the transformer to the 208 terminal 1 NOTE In case of short or overload rectify the problem and press black button oom Ir Thermostat RH E transformer to reset breaker Wiring L Jumpe Wire gt Single stage W2 units only Not applicable for single stage B Compressor Contactor Coil White Black Stripe 2 units NC Solenoid Valve Coil Plenum Heater Wiring 1 Plenum Heat Relay 4 Way Valve 2 Coil Water Heat Indoor Loop Relay Coil RA Aquastat Y1A 4 Way Valve 1 Coil Cooling Wiring Y2A Compressor Stage 2 Coil Not applicable N A for Single Stage Models for single stage units CA White Black Stripe Priority Wiri Yellow black stripe wire not PR placed for single stage units connect for air priority PR PLENUM HEATER OPERATION amp 1 provides set of dry Fan will run automatically with contacts for operating plenum heater Thermostat W2 signal 18 APR 2011 4 5 eades Petitcodiac NB 201
14. 12 0 42 4 68 1 500 101 8 33 8 50 663 7 1 42 408 68 1 500 104 1 36 1 54 154 12 0 53 4 68 1 500 106 6 38 6 57 849 12 0 58 9 68 1 500 109 0 41 0 61 523 5 14 10 0 0 757 150 45 14 190 20 0 708 18 026 Compressor ZPS40K4E PFV 37 3Pa 0 15inH20 Ext Static O iN N NIRIBIR NI O p N 5 5 NJD O TF 55 HACW P 1T R410a 60 Hz F BIU Hr BTU Hr BTU Hr Watts Watts EER lt BIU Hr L s Watts Watts Lis Watts 1 500 55 6 25 0 19 259 39 728 58 987 2 069 181 26 8 48 75 12 0 59 1 11 1 66 666 708 13 1 13 9 5 643 11 640 17 283 7 87 89 23 9 0 757 15 1 19 533 1 500 56 2 24 4 18 819 38 819 57 637 2 211 181 24 6 53 80 12 0 64 0 11 0 65 800 708 13 4 13 6 5 514 11 374 16 888 7 22 11 7 26 7 0 757 17 8 6 1 19 279 1 500 56 8 23 8 18 366 37 886 56 252 2 355 22 6 58 85 12 0 68 8 10 8 64 907 7 lol AJN O co co N N Pu O 80 6 27 0 O N 27 708 13 8 13 2 5 381 11 100 16 482 14 4 29 4 0 757 20 5 19 018 85 80 6 47 1 500 57 8 22 8 17 583 36 271
15. Ground Water Water Valve installed in return line Flow control installed in return line Domestic Hot All shut off valves are open Water Lines are full and purged Desuperheater pump wire is disconnected High voltage connections are correct and securely fastened Circuit breaker or fuse size and wire gauge for Heat Pump Circuit breaker or fuse size wire gauge and Plenum Heater size Low voltage connections are correct and securely fastened STARTUP DATA Voltage across L1 and L2 1 and L3 L2 and L3 VAC Heating Mode Suction Pressure Discharge Pressure psig 10 minutes Out F Out F Duct Return Duct Supply and Delta T Outdoor In Supply In Outdoor Out Supply Out and Delta T gt Outdoor Flow Compressor L1 black wire current Domestic Hot Water functioning Ex _ A total of three copies are required one for the homeowner one for the installer and on to be sent to Maritime Geothermal Ltd 001223MAN 04 Page 30 01 JAN 2014 UNIT STARTUP HYDRONIC The unit is now ready to be started The steps below outline the procedure for starting the unit and verifying proper operation of the unit controlled by an aquastat It is recommended that safety glasses be worn during the following procedures Preparation 1 Remove the caps from the service ports and connect a refrigeration manifold se
16. Name Typical Duct and Condensate Connections Modular Case ECO IMPL BY APVD BY DATE 001201CDG 01 10 1 A 001223MAN 04 Page 16 01 JAN 2014 TABLE 12 Duct Sizing Guide external static of 0 20 H20 O1 gt lt O1 gt lt 6 5 x 6 5 8x8 8x8 8 5 x 8 5 8 5 x 8 5 9 5 x 9 5 11 x 11 11 x 11 12 x 14 12 x 14 15 x 15 15 x 15 16 x 17 16 x 17 18 x 19 18 x 19 20 x 20 20 x 20 22 x 22 22 x 22 24 x 24 26 x 26 26 x 26 28 x 28 28 x 28 30 x 30 30 x 30 30 x 32 30 x 32 i Diameter Duct Area Rectangular Equivalents in 680 3954 14 8x2 9x19 10x17 11x15 95 154 1 8x2 9 19 10x17 11x15 1325 201 16 8x30 10x22 12x18 14x16 1450 201 16 8x30 10x22 12x18 14x16 1750 254 18 8x40 10x30 12x24 14 x 20 2000 254 18 8x40 10x30 12x24 14 x 20 2250 314 20 10x38 12 30 14x26 16 x 22 2600 20 10x38 12x30 14x26 16 x 22 2900 22 12x36 14x30 16x26 18 x 23 3400 22 12x36 14x30 16x26 18x23 3600 452 24 x38 16x32 18x28 20x25 4800 452 24 14 38 16x32 18x28 20x25 5250 531 26 16x38 18x32 20x30 22x24 6125 66 28 18x38 20x34 22x30 24x28 6500 616 28 18x38 20x34 22x30 24x28 7250 77 30 20x40 22x38 24x32 26x30 707 30 20x40 22x38 24x32 26x30 804 32 22x40 24x38 26x34 28x32
17. Om Watts 34 152 10 006 37 033 10 850 40 259 11 796 43 263 12 676 46 447 13 609 50 424 14 774 54 499 15 968 59 098 17 316 Ra C N SI E Co gt 5 EM Compressor ZPS40K4E PFV 01 JAN 2014 001223MAN 04 HYDRONIC CAPACITY RATINGS continued TF 65 HACW P 1T USGPM a BIU Hr Heating Mode Nominal 5 ton USGPM R410a 60 Hz BTU Hr oF Watts Amps Watts W W C Ls lt E G 15 14 4 21 9 4 1 28 283 4 171 185 4 321 2 90 104 0 116 14 4 2 3 Watts 42 815 12 545 26 0 3 3 32 0 38 0 3 3 44 0 6 7 48 0 54 0 122 5 6 18 9 20 NI 3 9 0 908 6 6 7 1 8 6 30 40 4 4 45 14 4 52 4 0 908 11 3 N 10 0 14 4 0 908 14 4 0 908 14 4 0 908 0 908 27 4 2 6 38 3 47 1 8 4 14 3 TF 75 HACW P 1T Tl 26 0 32 0 2 38 0 44 0 N 49 0 iN 4 N 55 0 12 8 61 0 16 1 67 0 19 4 i N cou lI GO al or L O 50 10 0 USGPM L s 16 8 1 060 16 8 1 060 16 8 1 060 16 8 1 060 16 8 1 060 16 8 1 060 16 8 1 060 16 8 1 060 5 CO 1 C1 po 22 2 5
18. 36 600 107 413 5 4 2990 143 395 Stage2 3 910 48 800 143 3 65 8 5 2 389 ass 55100 397 Stage2 4 365 59 100 17 3 3 97 1 06 4 335 51 700 152 350 Stage2 5 565 67700 198 357 Stage 6 245 73 300 215 344 01 JAN 2014 Page 51 001223MAN 04 1 06 CAPACITY RATINGS Heating Mode TF 45 HACW P 1T Nominal 3 ton R410a 60 Hz USGPM L s 9 6 0 606 9 6 0 606 9 6 0 606 9 6 0 606 9 6 0 606 9 6 0 606 9 6 0 606 9 6 17 2 12 8 0 606 Compressor ZPS30K4E PFV F a 24 3 13 5 26 0 14 5 27 9 15 5 29 8 16 6 31 5 17 5 33 7 18 7 36 0 20 0 BTU Hr Watts 29 128 8 534 31 242 9 154 33 493 9 813 35 806 10 491 38 152 11 179 40 822 11 961 43 647 12 788 T T Watts W W E F C c was C c Ls C y 100 1 200 92 3 2 27 632 25 8 68 102 1 200 940 54 68 104 1200 959 36 9 68 105 1 200 978 27 3 4 20 0 38 7 6 3 8 217 62 68 107 1 200 99 5 37 88 Lere 866 975 44 2 10 1 217 68 109 1 200 101 7 6 8 3 8 9 509 20 0 497 7 3 4 217 02 68 111 1 200 104 0 ar 023 20 4695 400 5817 79 97921 2469 107 217 2612 523 68 113 1200 1065 985 4
19. gt m 70 Tl lt 001223MAN 04 4 472 46 3 1 200 57 9 22 7 15 148 566 1 200 566 1 200 8 566 143 12 7 4 115 1 200 9 1 566 14 5 12 5 4 056 1 200 566 12 6 4 438 23 2 14 236 12 9 4 171 22 9 14 046 22 6 13 841 22 2 13 623 12 3 3 992 8 577 29 053 8 513 29 662 8 691 29 265 8 575 28 840 8 450 28 385 8 317 13 049 44 201 12 951 43 898 12 862 43 310 12 690 42 681 12 505 42 009 12 308 1 53 D 1 803 1 932 N to 2 065 2 204 5 E Page 52 O gt 23 2 72 6 79 22 2 22 0 N 20 4 78 25 6 83 28 3 9 6 0 606 9 6 0 606 9 6 0 606 9 6 0 606 9 6 0 606 82 6 28 1 89 1 31 7 94 1 34 5 99 1 37 3 104 0 40 0 14 950 50 889 14 910 50 760 14 872 50 609 14 828 50 434 14 777 50 237 14 719 10 6 E CO 11 1 11 1 6 2 11 1 6 1 11 0 37 3Pa 0 15inH20 Ext Static 01 JAN 2014 CAPACITY RATINGS continued Heatina Mode TF 55 HACW P 1T Nominal 4ton __ R410a 60 Hz Watts Amps Watts C Watts Watts W W w 2 3 4 6 4 48 vi 4 53 4 60 4 62 BTU Hr 0 O gt Co cO cO OD 68 1 500 96 4 cO k D 9
20. umm 61 900 18 1 3 52 15 NaCl Weight Ground Loop Fluid REV 11 Table 19 Standard Capacity Ratings Ground Water Heating 60Hz EAT 68 F 20 C ELT 50 F 10 C Pressure Input Tons USG Lis Lis Watts BTUHr kW WW Stage 1 1240 585 37 800 4 78 144 091 Stage 1 1540 727 2 645 44 100 12 9 4 89 Stage 2 1900 897 3 790 60 400 17 7 4 67 lame Stage1 1660 783 3610 54200 159 440 Stage2 2100 991 4880 71 400 209 429 6 EIE Er REV 11 001223MAN 04 Page 50 01 JAN 2014 STANDARD CAPACITY RATINGS continued Table 20 Standard Capacity Ratings Ground Loop Cooling 60Hz STAGE 1 ELT 68 20 C EAT 80 6 F 27 C STAGE 2 ELT 77 F 25 C Pressure Input 8 _____ _ IGAL USG Lys _ Lis Watts BTU Hr KW WW 32 600 96 904 Stage 1030 486 1 060 Stage2 1200 566 1 965 44100 129 657 Stage 1240 585 1 750 41600 122 697 Stage2 1500 708 3 015 51 700 15 1 50 57 492 1540 727 2025 49400 144 714 4 7 7 Stage2 1900 897 3 500 60 500 17 7 506 75 6 14 168 106 86 Stage 1660 783 2 70 58 200 170 611 5 Stage2 2100 991 4460 69 700 20 4 4 58 5 6 38 8 15 NaCl Weight Ground Loop Flui
21. 4 Drawing Typical Ground Water Installation for Size 25 75 Heat Pumps Brass FPT Size Drawing Number REV SHEET 000907CDG 001223MAN 04 GROUND WATER DISPOSAL METHODS Pressure Nordic Pitless Adaptor Water Table Pond Lake minimum 8Oft Stream Submersible Pump Nordic Pitless Adaptor Water Table minimum 8Oft Submersible Pump Pressure Pitless Adaptor Water Table Tile Field minimum 8Oft Submersible Ground Water Disposal Methods Size Drawing Number REV SHEET 1 Sm z CED Mrd ris Geddes Petitcodiac J T MARITIME GEOTHERMAL mn 222 Chris_Geddes Drawina N Eee swing Name Chris Geddes Approved By MFG Date GEDDES GEDDES 04 FEB 08 IMPL BY APVD BY DATE A 001223MAN 04 Page 24 01 JAN 2014 Ground Loop System Information Once the ground loop has been pressure tested and the header pipes have been connected to the circulator pump module the heat pump can be connected to the circulator pump module CIRCULATOR PUMP MODULE Maritime Geothermal Ltd has compact pump modules with built in three way valves to facilitate filling and purging the ground loop Refer to drawing 000906CDG at the end of this section Alternatively Grundfo
22. 5 395 3 97 68 110 2 400 98 5 30 5 73 139 4 6 6 6 6 CO G 1 0114 911 O1 s 1 O 740 168 76 69466 5257 276 560 5754 423 68 116 2400 1026 346 83 100 745 168 587 69610 5395 283 560 5011 448 68 119 2400 1052 372 8983 72 121146 20395 483 115 407 207 26 189 750 168 590 90 75652 5556 290 560 6072 463 68 122 2400 1080 400 95913 20 0 10 0 1 1 150 50 22166 wel 50 0 1 133 42 2 22 2 28 120 Compressor ZP7OKWE A 230 1 60 208 3 60 49 7Pa 0 02inH20 Ext Static I I 05 5 8 1 1 8 1 1 8 8 1 1 1 8 1 1 8 TF 80 HACW P S R410a 60 Hz E BTU Hr BTU Hr Watts Amps Watts Watts Watts Watts zi L min Watts 806 44 2 400 57 8 22 8 30 398 56 952 87 349 3 293 17 6 16 8 270 6 6 1 133 143 12 7 8 906 16 687 25 593 11 9 3 522 18 5 625 4 9 54 80 168 80 6 44 2 400 58 6 22 0 29 251 54 804 84 055 3 761 19 5 59 85 16 8 270 67 1 133 14 8 12 2 8 571 16 057 24 628 126 5 66 150 29 4 1 060 21 6 6 6 29 014 80 6 44 2 400 59 1 21 5 28 612 53 607 82 219 3 992 20 6 64 90 16 8 27 0 6 8 1433 15 1 11
23. Adjust the thermostat setpoint to 85 F 29 C Verify that the current draw increase as each stage is activated 10kW has 2 stages 15kW has 3 stages and 20kW has 4 stages 8 Verify the DHW IN and DHW OUT temperatures if applicable by hand caution pipes get hot If the DHW OUT line does not become hotter than the DHW IN line the circulator is air locked Bleed the air from the system and check the temperature differential again to ensure there is flow from the circulator Cooling Mode 1 Set the thermostat to cooling mode and adjust the setpoint to activate Stage 1 and Stage 2 2 Monitoring the refrigeration gauges while the unit runs Record the following after 10 minutes of runtime 1 Suction pressure Discharge pressure Duct Return temperature Duct Supply Out temperature Duct Delta T Outdoor Loop In Supply In temperature Outdoor Loop Out Supply Out temperature Outdoor Delta T ON O WP 3 Adjust the thermostat setpoint to the desired room temperature if possible otherwise set it just low enough to allow the unit to run ie 1 F 0 5 C less than room temperature and let the unit run through a cycle Record the thermostat setpoint suction And discharge pressures when the unit shuts off Final Inspection If the Hydronic Startup is to be performed as well do the Final Inspection after is has been completed 1 Turn the power off to the unit and plenum heater if installed and remove test equi
24. in the airflow It can easily be placed in the side of the unit for straight through airflow To switch the location of the fan outlet follow these simple steps 1 Turn the power of to the unit 2 Remove the screw that holds the side access panel in place and remove the access panel by pulling up on the handle and then outward from the bottom 3 Disconnect the two wire harnesses and ground wire from the fan motor 4 Repeat step 2 for the access panel with the fan mounted in it Set the assembly on the floor 5 Disconnect the plenum heater extension from the fan housing and from the access panel 6 Mount the fan housing directly to the access panel 7 Install the fan panel in the new location and secure with the screw 8 Reconnect both harnesses and ground wire 9 Install the remaining access panel and secure with the remaining screw 001223MAN 04 Page CONTROL TRANSFORMER The low voltage controls are powered by a 75VA class Il transformer The transformer has a resettable breaker on the secondary side for circuit protection Should the breaker trip locate and correct the problem and then reset the breaker by pressing in on it NOTE For 208 230VAC 1 60 units if connecting to 208VAC power supply move the red wire connected to the 240 terminal of the transformer to the 208 terminal of the transformer SAFETY CONTROLS The heat pump has two built in safety controls which are designed to protect the unit fr
25. mode to satisfy the priority demand as quickly as possible The unit then swithes to the non priority mode to satisfy that demand A Stage 3 2 for single stage models call from air mode W2 E Aux Emergency overides the hydronic mode regardless of priority selection Aquastat Operation The Aquastat is used to control the hydronicr heat mode of the modular parallel design TF H design geothermal heat pump Stage 1 activates the heat pump in Stage 1 hydronic mode and Stage 2 activates the heat pump in Stage 2 hydronic mode two stage models only For two stage models Stage 2 hydronic mode may also be activated by a Stage 1 air mode call if hydronic mode is selected as priority mode Aquastat Settings The Aqustat controls Stage 1 and Stage 2 of the heat pump with it s Stage 1 and Stage 2 settings These setpoints should be set accordingly A typical installation could have Stage 1 set to 115F with a 5F differential and Stage 2 set to 110F with a 5F differential Refer to the Aquastat instructions for information on how to set the Aquastat Aquastat Wiring Diagram Wires represented by dashed lines are Heat Pump Electrical Box required for 2 Stage Models only 9 5 5 2 00 8 Y1A 00 2 RA 08 lt G cA 00 Thermostat Plenum Heat 18 4 or Ranco_Aquastat Connections Connections 18 3 L 2 1 e e e
26. 4 27 8 2 3 33 3 0 7 38 7 3 7 43 0 6 1 48 3 9 1 53 6 12 0 58 9 14 9 7 6 4 2 8 3 4 25 14 4 32 9 5 1 0 5 29 3 9 39 14 4 41 8 6 2 7 5 4 3 9 1 0 908 2 5 3 6 9 3 4 gt N N D E P 9 4 0 908 5 6 8287 40 0 46 7 0 908 31 592 4 187 18 6 4 338 3 12 104 0 116 14 4 35 196 4 199 18 7 4 349 3 36 104 0 116 46 179 13 530 14 4 38 689 4 222 18 9 4 373 8 58 104 0 117 14 4 42 747 4 191 19 0 4 365 3 85 104 0 117 49 823 14 598 53 396 15 645 14 4 46 946 4 249 19 3 4 423 4 09 105 0 118 14 4 51 814 4 254 19 3 4 429 4 41 104 0 118 9 14 4 57 7 56 667 4 313 19 6 4 487 4 68 105 0 119 14 4 BTU Hr Watts 29 942 8 773 33 301 N J 37 271 10 92 42 601 12 482 48 119 14 099 53 401 15 646 59 105 17 318 64 748 18 971 Compressor ZPS51K4E PFV Watts ol N N 5 332 5 346 5 412 Amps IN O IN 24 4 24 5 24 8 Watts 5 349 5 425 5 441 5 480 5 960 5 568 5 574 5 641 Nominal 6 ton EE L 2 61 2 77 2 98 3 25 3 51 3 79 T 4 08 4 34 104 0
27. 9 7 879 15 641 23 520 13 5 27 9 6 7 28 380 4822 24 1 80 105 168 80 6 45 2 400 61 0 19 6 24 658 48 949 73 607 5 151 25 5 85 110 16 8 27 0 7 0 1 33 16 1 10 9 7 225 14 342 21 567 15 2 Compressor ZP7OKWE 230 1 60 208 3 60 49 7Pa 0 02inH20 Ext Static 001223MAN 04 Page 56 01 JAN 2014 HYDRONIC CAPACITY RATINGS TF 45 HACW P 1T Heating Mode Nominal 3 ton i zu 2 gt B EN EN I o c N O O 1 5 o lt Ol u p S NA Ol O O cO 59 eo eo 11 IN TF 55 HACW P 1T USGPM Power Consumption BIU Hr Watts Watts Amps Watts o USGPM m 16 877 2 497 10 7 2 620 2 86 104 0 115 9 6 109 3 4945 400 46 1 0 606 43 0 18 504 2588 109 2661 301 10401 116 96 1097 5 422 40 0 467 0 606 432 20 415 2545 109 2 668 321 1040 116 96 101 5981 40 0 46 7 0 606 43 4 22 990 2 533 11 1 2 666 3 51 1040 117 96 1106 6 736 40 0 47 2 0 606 43 7 25 833 2 520 113 2596 3 90 1040
28. 900 897 1 900 897 1 900 897 1 900 897 1 900 897 1 900 897 1 900 897 Watts 571 23 5 20 947 46 843 67 790 14 0 57 5 14 2 13 0 23 1 12 8 6 137 20 603 6 036 Watts 13 725 46 072 13 499 Watts 2 556 19 862 66 675 19 536 2 759 57 9 22 7 20 241 45 264 65 505 2 9 14 4 12 6 5 931 58 7 21 9 19 508 14 9 12 1 5 716 59 5 21 1 119 173 15 3 11 7 5 618 60 0 20 6 18 764 15 5 11 5 5 498 60 4 20 2 18 336 15 8 11 2 5 372 60 9 19 7 17 887 16 1 10 9 5 241 Compressor ZPS51K4E PFV 001223MAN 04 13 262 43 624 12 782 41 694 12 216 40 804 11 956 39 872 11 683 38 898 11 397 N O O O 19 193 63 132 3 100 18 497 60 868 17 834 59 568 17 453 58 208 17 055 56 785 16 638 23 gt m to 3 449 67 2 D 3 912 11 6 D B L e N N 54 260 O NO O NO COPc 24 7 7 23 22 6 20 8 6 08 19 2 16 5 4 84 15 2 14 0 53 11 7 58 14 4 63 17 2 68 20 0 76 24 4 81 27 2 37 8 0 908 86 30 0 91 32 8 C 75 23 9 80 26 7 85 29 4 90 32 2 95 35 0 100 105 40 6 110 43 3 L s 14 4 0 908 14 4 0 908 14 4 0 908 14 4 0 908 14 4 0 908 14 4 14 4 0 908 14 4 0
29. 908 49 7 0 20inH20 C 63 8 17 6 68 7 20 4 13 6 23 1 18 4 25 8 86 6 30 4 91 6 33 1 96 5 35 8 101 4 38 5 C 10 8 6 0 10 7 39 10 6 SIS 10 4 5 8 10 6 5 9 10 6 9 9 10 5 5 8 10 4 5 8 Watts 77 402 22 679 76 977 22 554 76 510 22 417 74 600 21 858 72 88 21 327 72 226 21 162 71 637 20 989 71 023 20 810 Ext Static 01 JAN 2014 CAPACITY RATINGS continued Heatina Mode TF 75 HACW P 1T R410a 60 Hz USGPM oF BTU Hr Amps Watts L s Fa Watts 16 8 22 1 49 39 359 4 016 18 8 16 8 27 6 5 4 43 335 4 116 19 3 16 8 33 0 19 8 16 8 38 5 20 3 16 8 43 4 21 0 16 8 48 9 21 7 16 8 54 3 22 5 1 060 124 43 18 944 lt Watts 20 0 40 0 991 34 2 2100 957 277 58435 41 1 991 35 4 43 3 991 37 8 17 8 19 661 46 7 991 40 3 20 3 22 432 50 16 8 597 23 3 10 0 1 060 154 46 20 442 20 0 50 0 991 43 2 23 2 25 688 Compressor ZPS60K4E PFV 49 7 0 20inH20 Ext Static O e 838 EN CO N CO N k co co O O N O A m M NJ a N no Ol a NI O gt gt N CO o O olwlololo RIT g
30. Domestic Hot Water Circulator Pump Instructions 208 230VAC Single Phase 60 2 208 230 1 60 CONNECTION Min Circuit Min Wire TD Fuse or Neutral is only required if If heat pump is to be operated without the hot water Size Ampacity Gauge Breaker 43SVAC circulator connected to the water tank and flooded with 45 35 8 3 40 su the has Huff water remove the brown wire with the insulated terminal 55 41 6 3 50 Tha heat nime located here This pump is water lubricated and must 65 49 6 3 60 da nie irs not be run dry Once connected the external ON OFF 75 52 6 3 60 4 i switch may be used to temporarily turn the pump off 80 59 6 3 70 Chris Gedd 1 MARITIME GEOTHERMAL x Approved ENG Date TF HACW P 1 DE Chris Geddes 000217 C GEDDES C GEDDES ECO 2 IMPL BY APVD BY 01 JAN 2014 16 FEB 11 Electrical Box Diagram Size Drawing Number Drawing Rev SHEET UA of 1 01 JAN 2014 Page 63 001223MAN 04 Approved By CASE DETAILS TOP VIEWS 2 318 Top View Size 55 80 001223MAN 04 Page 64 01 JAN 2014 CASE DETAILS LEFT RETURN Left Side Left Return x Right Side View Left Return Size 55 80 01 JAN 2014 Page 65 001223MAN 04 CASE DETAILS RIGHT RETURN 238 THERMOSTAT WIRE 2 OOF ACCESS EECTRICAL BOX Rig
31. Low Pressure Switch HPS High Pressure Switch UM Flow Flow Switch 01 JAN 2014 Page 67 001223MAN 04 APPENDIX B ECM Fan Airflow Tables NOMINAL AIRFLOW SETTING MED STAGE 2 STAGE 1 FAN ONLY Recirculation 840 L s S L s 486 317 585 762 727 904 427 842 1660 783 N A N A N A N A 6 AIRFLOW SETTING LOW STAGE 2 STAGE 1 FAN ONLY Recirculation 790 L s 298 537 253 373 671 317 581 1000 472 650 401 626 1105 522 443 N A 1263 596 507 6 AIRFLOW SETTING HIGH STAGE 2 STAGE 1 FAN ONLY Recirculation TI 5 50 638 1314 620 1117 527 890 420 0 1128 532 661 672 1712 1632 77 1388 655 830 1496 706 1400 N A N A N A 1425 12 AIRFLOW SETTING MAX FAN ONLY Recirculation 44 981 1344 634 1142 539 5 463 753 355 640 302 854 _ 692 1192 562 622 710 2128 1004 1809 814 1466 478 2352 1110 1999 944 1859 877 1580 746 1317 2688 1269 2285 1078 N A N A NA N A 1505 604 NOTES Unit sizes 45 and 55 nominal value up to 0 50 2 sizes 65 75 and 80 up to 0 70 2 obtain the REDUCED airflow values use a dry contact to connect AR1 to AR2 on the terminal strip INFORMATION TAKEN FROM DOCUMENT 000527INF 04 001223MAN 04 Page 68 01 JAN 2014 THIS PAGE INTENTIONALLY LEFT BLANK 01 JAN 2014 Page 69 001223MAN 04 THIS PAGE INTENT
32. MG s Limited Residential Warranty 2 The costs of labour refrigerant materials or service incurred in diagnosis and removal of the defective part or in obtaining and replacing the new or repaired part 3 Transportation costs of the defective part from the installation site to MG or of the return of that part if not covered by MG s Limited Express Residential Warranty m X 4 The costs of normal maintenance This Limited Express Residential Warranty applies to MG Residential Class products manufactured on or after February 15 2010 MG S LIABILITY UNDER THE TERMS OF 5 LIMITED WARRANTY SHALL APPLY ONLY TO THE MG UNITS REGISTERED WITH MG THAT BEARS THE MODEL AND SERIAL NUMBERS STATED ON THE INSTALLATION START UP RECORD AND MG SHALL NOT IN ANY EVENT BE LIABLE UNDER THE TERMS OF THIS LIMITED WARRANTY UNLESS THIS INSTALLATION START UP RECORD HAS BEEN ENDORSED BY OWNER DEALER INSTALLER AND RECIEVED BY MG LIMITED WITHIN 90 DAYS OF START UP Limitation This Limited Express Residential Warranty is given in lieu of all other warranties If not withstanding the disclaimers contained herein it is determined that other warranties exist any such express warranty including without imitation any express warranties or any implied warranties of fitness for particular purpose and merchantability be limited to the duration the Limited Express Residential Warranty LIMITATION OF REMEDIES In the event of a breach o
33. PSIG ET C Gauge i TANK PRV must install both Aquastat Probe 0 60PSIG 125 1 12 Dry Well Zone Circulator PSIG PRV Valve INDOOR OUT Heating HOT OUT 35 49 C NOTE 95 120 F Refer to the heat Cooling pump labels 7 10 C for the Pressure Indoor Loop 45 50 F connection Gauge Circulator locations 0 60PSIG UP26 99 Boiler Union gt a oa Electric Gas INDOOR IN Ll ge ii 2 Insulated HOT IN i Circulator me Buffer Tank isolation valves Circulator and isolation valves Boiler Drain 3 Boiler Drain 4 Zone Supply Header Zone Return NOTE Pipe Size is 1 ID for model sizes 25 75 Header Pipe Size is 1 1 4 ID for model size 100 NOTES 1 Refer to diagram 000530PDG for the typical types of zones that may be connected to the supply and return headers 2 Unions or another type of disconnect should be used to connect the heat pump to the loop 3 Circulators should be mounted vertically when possible to reduce the chance of air getting caught in the housing 4 The automatic air vent must be installed upright to function properly 5 If the optional 1 ball valve is installed in the Indoor Out line the PRV must be installed as well to prevent pressure build up should both ball valves be closed Pressure gauges 0 60PSIG are placed on both sides of the circulators for
34. Replace aquastat Correct the setup Correct or replace wiring Correct or replace wiring Faulty aquastat No 24VAC between Stage 2 NO and COM of the aquastat when S2 is indicated on the aquastat display Faulty aquastat E2 error message Can cause the unit to trip a safety control if the set ting is too high or low Page 41 Replace aquastat Replace aquastat 001223MAN 04 HYDRONIC OPERATION TROUBLESHOOTING HEATING MODE Faut Possible Cause Verification Recommended Action _ Aquastat set too high Verify aquastat setting High Discharge Pressure Low Suction Pressure 001223MAN 04 Low or no Indoor loop flow Delta T across the Indoor Loop ports should be between 8 12 F 3 6 or compare pressure drop to the tables for the unit Lower aquastat setting to mended value of 115 46 C Verify pump is working and sized correctly Check for restrictions in the circuit ie valve partially closed TXV adjusted too far closed TXV stuck almost closed or partially blocked by for eign object Filter drier plugged Unit is overcharged Only possible if unit has been opened in the field and incorrectly charged Verify superheat It should be be tween 8 12 F 3 6 C Superheat will be high if TXV is closed too far Adjusting the TXV does not affect the superheat or the suction pres sure Feel each end of the filter drier it should be
35. Stage R410a Installation Site Startup Date Installer Province Check boxes unless asked to record data circle units PRE START INSPECTION All shut off valve are open full flow available Indoor Loop Hydronic Loop is full and purged of air Antifreeze concentration Weight Loop static pressure Ground Loop All shut off valve are open full flow available System gt 5 N lt D Loop is full and purged of air Antifreeze concentration Volume Weight Loop static pressure PSI Ground Water Water Valve installed in return line Flow control installed in return line Domestic Hot All shut off valves are open Water Lines are full and purged Desuperheater pump wire is disconnected gt 5 N lt D High voltage connections are correct and fastened Circuit breaker or fuse size and wire gauge for Heat Pump Circulator pump voltages Outdoor 1 Outdoor 2 Indoor 1 Low voltage connections are correct and securely fastened STARTUP DATA Voltage across L1 and 12 L1 and L3 L2 and L3 Heating Mode Suction Pressure Discharge Pressure 10 minutes Indoor In Hot In Indoor Out Hot Out and Delta T Outdoor In Supply In Outdoor Out Supply Out and Delta T Outdoor Flow Compressor L1 black wire current Domestic Hot Water functioning Aquastat setp
36. Volume nane nnns 26 Table 15 Volume of Fluid per 100ft Of Pipe U 26 Table 16 Refrigerant Charge Chart l U U Page 50 Table 17 Shipping ull l ll l 50 Table 18 Standard Capacity Ratings Ground Loop Heating 60Hz Page 50 Table 19 Standard Capacity Ratings Ground Water Heating 60Hz Page 50 Table 20 Standard Capacity Ratings Ground Loop Cooling 60HZ Page 51 Table 21 Standard Capacity Ratings Ground Water Cooling 60Hz Page 51 Table 22 Standard Capacity Ratings Ground Loop Hydronic Heating 60HZ Page 51 Table 23 Standard Capacity Ratings Ground Water Hydronic Heating 60Hz Page 51 Table 24 Heat Pump Electrical Information 230 1 60 Page 60 Table 25 Heat Pump Electrical Information 208 3 60 Page 60 Table 26 Heat Pump Electrical Information 220 1 50 eere nennen nnn nnn Page 60 Table 27 Heat Pump Electrical Information 380 3 50
37. Zone Circulator Fan Coil ZONE 1 Heating Only Zone Heat Cool or Heat only Thermostat NOTES 1 Verify the line voltages are correct for the primary of the transformer and for the floor circulator 2 Ensure that the transformer is sized to handle the load with all zones calling for heat 3 Two pipe fan coils are recommended for fan coil zones 4 Zone N indicates the last zone in the zone type Fan Coil ZONE Heating Only Zone Heat Cool or Heat only Thermostat THERMOSTAT FOR FAN COILL C Common Internal Transformer R 24VAC Internal Transformer W Zone Valve G Fan Signal connect to G1 Fan Speed 1 G2 Fan Speed 2 if equipped G3 Fan Speed 3 if equipped Select one fan speed T S 8x EE Jan 07 170 RE 5 Petitcodiac NB Ch B Dat GEOTHERMAL 6 3 ay o7 MARITIME ALII Name Typical Heating Only edades Y Zone Wring TF amp DXTF Series ecked Approved MFG Date ECO IMPL BY APVD BY DATE A 000344CDG 01 1 of 1 2 Pipe Fan Coil 001223MAN 04 Page 12 01 JAN 2014 Single Unit Connection to Domestic Hot Water Pre Heat Tank Brass FPT Top Port Configuratio
38. authorized service personnel in connection with the installation of a new or repaired warranty part that is covered by this Limited Express Residential Warranty only to the extent specifically set forth in the current labour allowance schedule A provided by MG s Warranty Department and only as follows 1 MG Units for two 2 years from the Warranty Inception Date 2 Thermostats auxiliary electric heaters and geothermal pump modules built or sold by MG when installed with MG Units for two 2 years from the Warranty Inception Date 3 Sealed refrigerant circuit components of MG Units which components only include the compressor refrigerant to air water heat exchangers reversing valve body and refrigerant metering device for five 5 years from the Warranty Inception Date Labour costs are not covered by this Limited Express Residential Warranty to the extent they exceed the amount allowed under said allowance schedule they are not specifically provided for in said allowance schedule they are not the result of work performed by MG authorized service personnel they are incurred in connection with a part not covered by this Limited Express Residential Warranty or they are incurred more than the time periods set forth in this paragraph after the Warranty Inception Date This warranty does not cover and does not apply to 1 Air filters fuses refrigerant fluids oil Products relocated after initial installation Any por
39. been tested during the Air Startup 6 Open a zone or zones and let the tank cool down until Stage 2 is activated Close the zone s again 7 Turn the power off to the unit Connect the brown wire with the blue insulated terminal to the compressor contactor as shown in the electrical box diagram Turn the DHW Switch in the unit post on Turn the power to the unit on 8 Verify the DHW IN and DHW OUT temperatures if applicable by hand caution pipes get hot If the DHW OUT line does not become hotter than the DHW IN line the circulator is air locked Bleed the air from the system and check the temperature differential again to ensure there Is flow from the circulator Final Inspection 1 Turn the power off to the unit and remove all test equipment 2 Install the electrical box cover and the access panel on the heat pump Install the service port caps securely to prevent refrigerant loss 3 Do a final check for leaks in the ground water ground loop system and ensure the area is clean 4 Turn the power on to the unit Set the aquastat to the final settings and record the values Startup Record 1 The installer shall sign and date the Startup Record and have the homeowner sign as well The installer shall leave the Startup Record with the homeowner retain a copy for filing and send a copy to Maritime Geothermal Ltd for warranty registration 01 JAN 2014 Page 31 001223MAN 04 Startup Record Sheet Hydronic TF Series Size 25 75 Two
40. closed Try tapping the valve and switch ing from air cool to water heat a few times Replace the check valve if the problem persists Low or no refrigerant charge Entering air temperature and air flow are good but suction is low Check static refrigeration pressure of unit for very low value Locate the leak and repair it Spray nine a sniffer and dye are common methods of locating a leak Faulty compressor not pumping Pressures change only slightly from static values when compres sor is started Replace compressor Compressor See Low Suction frosting up Pressure in this section TXV stuck almost closed or partially blocked by foreign object TXV frosting up Random Low Pressure trip does not occur while there Faulty compressor tactor con Intermittent fan 01 JAN 2014 Adjusting the TXV does not affect the superheat or the suction pres sure Points pitted or burned Contactor sometimes sticks causing the compressor to run without the fan tripping the low pressure control See Fan Troubleshooting section Page 39 Adjust the TXV all the way in and out a few times to loosen it Replace TXV if this does not work Replace contactor Correct the problem 001223MAN 04 FAN TROUBLESHOOTING Possible Cause Verification Recommended Action Low Airflow Fan operating on wrong Stage speed Fan not operat ing or operating intermittent
41. operation of the heat pump Verify that all registers are open and clear of any objects that would restrict the airflow Verify that a new air filter is installed and the cover is secured Verify the condensate drain is connected properly vented and free of debris If a plenum heater has been installed verify that it is securely fastened to the ductwork Loop Hydronic Verify that all shutoff valves are fully open and there are no restrictions in the piping from the heat pump to the indoor loop and that full flow is available to the heat pump 2 Verify that the entire system has been flooded and all the air has been purged as much as possible Further purging may be required after the system has been operating for a while 3 Verify that the loop contains the proper mix of antifreeze if used for the intended application Record the type of antifreeze and the mixture value on the startup sheet circle Vol or Weight 4 Record the static loop pressure on the startup sheet Outdoor Loop Ground Loop 1 Verify that all shutoff valves are fully open and there are no restrictions in the piping from the heat pump to the ground loop and that full flow is available to the heat pump 2 Verify that the entire system has been flooded and all the air has been purged as much as possible Further purging may be required after the system has been operating for a while 3 Verify that the loop contains t
42. plugged with dust that has collected during the winter caus ing the condensate to overflow into the bottom of the heat pump and onto the floor The condensate drain is internally trapped however proper venting is required external to the heat pump Refer to local codes to ensure the installa tion is done properly Drawing 001201CDG shows a typical installation 001223MAN 04 Typical Duct and Condensate Connections Modular Case TS Radii Hot Air Out Supply Ducts should be sized asper the Duct Sizing Cold Air In tablein this manual Return Hot Air Out Supply Flexible Duct Collar minimum lt 12 above plenum heater elements if installed Flexible Duct Collar Option 1 Optional Electric Plenum Heater Internally Mounted Flexible Duct Collar Option 2 Air filter Filter Rack Can be mounted to the left or right Accoustic insulation may be used inside the ducts near the unit to dampen any air noise that may be present Ensure there is no insulation within 12 of the plenum heater if Condensate Drain 3 4 PVC Socket Internally Trapped installed Venting may be required refer to 2 thick local building code styrofoam Floor Drain Minimum decline of 1 8 per foot 1847 lt 12 D B Dat 170 Plantation Rd 1 1 LL C MARITIME GEOTHERMAL Petitcod ac _ E4Z 6H4 _ Approved an gg
43. purged of air several times before good circulation is obtained A temperature difference between the DHW In and DHW Out can be felt by hand when the circulator pump is operating properly For the pre heat tank setup the final tank should be set to 140 F 60 C unless local code requires a higher setting The pre heat tank does not require electric elements This setup takes full advantage of the desuperheater as it is the sole heat provider to the pre heat tank The desuperheater remains active during the compressor runtime until the pre heat tank has been completely heated by the desuperheater alone This setup is more energy efficient than a single tank setup CAUTION If two 2 shut off valves are located on the do mestic hot water ines as shown in the diagram a pressure relief valve must be installed to prevent possible damage to the domestic hot water circulator pump should both valves be closed 001223MAN 04 Line Typical Heating Only Zone Wiring TF amp DXTF Series Voltage In Floor Heating Only ZONE 1 Heating Thermostat Signal may not be required for certain thermostats I External Electrical Box Transformer Zone Circulator Contactor 18 2 Signal may not be required for certain thermostats mm um um um um um um um um EM 18 2 Cable 29
44. should be between 8 12 F 3 6 C Super heat will be low if TXV is open too far Recommended Action Have a qualified service technician backflush the coaxial exchanger Remove 1 2lb of refrigerant at a time and verify that the discharge pressure reduces Adjust TXV to obtain 8 12 F 3 6 C superheat TXV stuck open Leaking reversing valve 1 Low Suction Air Flow Pressure TXV stuck almost closed or partially blocked by foreign object Adjusting the TXV does not affect the superheat or the suction pres sure Low super heat and dis charge pressure Reversing valve is the same tem perature on both ends of body common suction line is warm compressor is running hot See Fan Troubleshooting section Note low airflow will cause the air coil to ice up once the suction drops below 90PSIG Adjusting the TXV does not affect the superheat or the suction pres sure T XV may be frosting up Adjust the TXV all the way in and out a few times to loosen it Re place TXV if this does not work Replace reversing valve 1 Correct the problem Adjust the TXV all the way in and out a few times to loosen it Re place TXV if this does not work Leaking check valve Located in the receiver liquid line out Valve will be cold Remove the cap from the roto lock fitting on the receiver and close the roto lock valve Unit should function normally there may be a sound change as the roto lock is
45. system and check for improved performance ol ol o o m m m m 9 9 9 9 70 9 O1 gt C9 on the plumbing there should be either unions or boiler drains for to access the heat exchanger 01 JAN 2014 Page 33 001223MAN 04 Troubleshooting Guide The following steps are for troubleshooting the geothermal heat pump the problem is with the domestic hot water or the plenum heater proceed to those sections at the end of the troubleshooting guide Repair procedures and reference refriger ation circuit diagrams can be found at the end of the troubleshooting guide STEP 1 Verify that the display is present on the thermostat If it is not proceed to POWER SUPPLY TROUBLESHOOTING otherwise proceed to STEP 2 STEP 2 Remove the door and electrical box cover and check to see if there is a fault code on the control board If there is record the fault code Turn the power off wait 10 seconds and turn the power back on Set the thermostat to call for heating or cooling depending on the season or set the aquastat to call for heating STEP 3 Air If a24VAC signal does not appear across Y1 and of the terminal strip within 6 minutes proceed to the THERMOSTAT TROUBLESHOOTING section otherwise proceed to STEP 4 STEP 3 Hydronic 24VAC signal does not appear across and of the terminal strip proceed to the HYDRONIC TROUBLESHOOTING AQUAST
46. that varies its area inversely with pressure that a constant flow is maintained 001223MAN 04 REPAIR PROCEDURES PUMP DOWN PROCEDURE Connect the refrigerant recovery unit to the heat pump service ports via a refrigeration charging manifold and to a recovery tank as per the instructions in the recovery unit manual If there was compressor burn out the refrigerant cannot be reused and must be disposed of according to local codes water heat exchangers must either have full flow or be completely drained of fluid before recovery begins Failure to do so can freeze and rupture the heat exchanger voiding its warranty Note that this does not apply to double wall domestic hot water exchangers desuperheater coils Ensure all hose connections are properly purged of air Start the refrigerant recovery as per the instructions in the recovery unit manual Allow the recovery unit suction pressure to reach a vacuum Once achieved close the charging manifold valves Shut down purge and disconnect the recovery unit as per the instructions in its manual Ensure the recovery tank valve is closed before disconnecting the hose to it Connect a nitrogen tank to the charging manifold and add nitrogen to the heat pump until a positive pres sure of 5 10PSIG is reached This prevents air from being sucked into the unit by the vacuum when the hoses are disconnected The heat pump is now ready for repairs Always ensure nitrogen is flowing
47. the dealer or service organization who installed the products will provide warranty performance for the owner Should the installer be unavailable contact any MG recognized distributor dealer or service organization If assistance is required in obtaining warranty performance write or call Maritime Geothermal Ltd Customer Service PO Box 2555 Petitcodiac New Brunswick E4Z 6H4 506 756 8135 or e mail to info nordicghp com NOTE Some states or Canadian provinces do not allow limitations on how long an implied warranty lasts or the limitation or exclusions of consequential or incidental damages so the foregoing exclusions and limitations may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state and from Canadian province to Canadian province Please refer to the MG Installation Installation and Service Manual for operating and maintenance instructions An extended warranty option is also available Please contact Maritime Geothermal Ltd via the contact information in the previous paragraph for more information
48. the load side Breaker on transformer is sticking out Transformer breaker is not tripped 230VAC is present across L1 and L3 of the compres sor contactor but 24VAC is not present across Ry and C of the terminal strip 24VAC is not present across C and of the thermostat 24VAC is present across C and R Ry of the thermostat but ther mostat has no display Reset breaker or replace fuse with proper size and type Time delay type D Push breaker back in If it trips again locate cause of short circuit and correct Replace transformer Correct the wiring Replace thermostat 001223MAN 04 Page 34 01 JAN 2014 Fault Possible Cause No Y1 signal to heat pump after 6 minutes Fault Code 1 High Pressure Control Fault Code 2 Low Pressure Control Fault Code 3 Flow Switch 01 JAN 2014 THERMOSTAT TROUBLESHOOTING Verification Recommended Action Correct the setup Incorrect thermostat set up Faulty thermostat to heat pump wiring Faulty thermostat Thermostat does not indicate a call for heat No 24VAC signal present across C and Stage 1 of the thermo stat 24VAC signal present across Stage 1 and C of the thermostat but not present across Y1 and C of the ter minal strip No 24VAC between Stage 1 and C of the thermostat when a call is indi cated on the thermostat FAULT CODE TROUBLESHOOTING Fault Possible Cause Verification _ Recomm
49. unplug the connector Circulation 2 Grey pin 15 Stage 1 Yellow pin 6 Stage 2 Yellow Black pin14 Stage 3 Violet pin 2 Verify that the connector is properly inserted into the fan motor Gently tug on each wire to verify it is properly inserted into the connector Measure 24VAC between White pin 3 and the following at the fan con trol signal harness insert probes in connector where wire is inserted do not unplug the connector Circulation 2 Grey pin 15 Stage 1 Yellow pin 6 Stage 2 Yellow Black pin14 Stage 3 Violet pin 2 If proper signal isn t present re place Fan Control Signal Har ness proper signal is present replace fan motor head Repair any loose connections If proper signal isn t present re place Fan Control Signal Har ness proper signal is present replace fan motor head Faulty Fan Power Har ness or faulty motor Insert the tips of the voltmeter probes into the back of the connect or at the fan to measure the voltage across the red and black wires val ue should be 230VAC Page 40 Replace Power Harness if 230VAC is not present replace motor if 230VAC is present 01 JAN 2014 No display on aquastat No signal to heat pump No Y2A signal to heat pump Setting s not retained 01 JAN 2014 HYDRONIC TROUBLE SHOOTING AQUASTAT Fault Possible Cause Verification Recommended Action Transformer breaker tripped Brea
50. warmer than indicated by the thermostat PLENUM HEATER OPTIONAL For installations that do not already have a backup heat source such as electric baseboard wood stove propane etc it is recommended that a plenum heater be installed This pro vides two functions The first function of the plenum heater is to act as an auxiliary heat source As such it will provide additional heat on extremely cold days if the heat pump is unable to bring the home tempera ture up quickly enough eliminating any discomfort to the home owner The second function of the plenum heater is to provide emer gency heat should a problem occur that causes the heat pump to be locked out This can be engaged by setting the thermostat to emergency heat allowing the plenum heater to function while preventing the heat pump from operating Should the heat pump fail while the home is vacant the auxiliary function of the thermostat will maintain the temperature setting of the thermo Stat INSTALLATION Fan outlet at top of unit The heat pump comes equipped with an internal mounting location for the ple num heater Remove the screws from the cover plate remove the cover plate and place the plenum heater in the hole Secure it in place with the cover plate screws Use the indicated knock outs on the heat pump case for electrical connections 01 JAN 2014 Page 15 When installation is complete check the appropriate box of the label on the air handler door t
51. will lockout the compressor and energize the fault output A manual reset of power will be required to reset tne lockout condition The control has a status LED to indicate which type of fault or lockout has occurred If pressure Fault or lockout occurs tre status LED wil blink once Ir a low pressure fault or lockout occurs the status LED wil blink twice If a flow swith fault occurs the status LED wil blink three times Dimensions Specifications Voltage 18 to 30 Frequency 50 to 60 Hz Output Solid state Triac Rating 30 Fault Relay SPDT Rating 1 amp 30 Time Delay Antl short cycle time S minutes fixed 2096 5 second test mode Mechanical Board dimensions 3 5 x 3 25 x 1 Mounting Surface mount using 4 6 or screws Wiring Diagram 0 8 8 amp x 1 4 1 LI L1 LI j 2 9 T ku suan m 0 z mn L 8 259 mettre at og i2 me zr 3 2 58 s DE O gt O im eu 5 n LJ e fa 2i we Lol 0 STATUS FAT A TE Qe LPS
52. 0 7 01 JAN 2014 Page 3 001223MAN 04 Table of Contents INSTALLATION INFO RIA TIONS u u u u u team ans PAGE 6 yu Page 6 RE UN oet Page 6 PIacemelnl Page 6 Ele MCI CONNEC ONSE ou en ee IQ EU INIM IU i PM ec cer ee Page 6 Circulator Pump Module Wiring Ground Loop Only Page 6 Indoor LOOP Circulator WIFI scene Page 6 Thermostat HequiremenlsS ve u I NERO DA IR E ERA DM e uM NAMEN MEUS Page 6 AGUAS Al HEGUIFCIMICING ett Page 7 Xlll e ee ne mie die Page 7 Operational Description be es cn ue Page 7 et D Page 10 Fan Oricntallo eH C Page 10 Fan Outlet Orientation on dec sd iN Ds bd pete en EE Page 10 Control 2 Page 10 cciam eg ee ee ee Rte Page 10 Domestic Hot Water Connections HACW only
53. 118 96 1112 7 569 40 0 47 8 0 606 440 28 381 2523 113 2599 419 1040 118 96 117 8 316 40 0 478 0 606 443 30 910 2558 115 2 684 443 1040 119 96 1123 9 057 40 0 483 0 606 44 6 9 920 40 0 483 0 606 45 0 Compressor ZPS30K4E PFV R BIU Hr Watts F JUSGPM R410a 60 Hz F Watts 25 547 7 485 27 313 8 003 29 247 8 569 31 782 9 312 34 580 10 132 37 139 10 882 39 789 11 658 42 746 12 524 5 3 3 0 5 7 3 2 6 1 3 4 6 6 3 7 7 2 4 0 7 7 4 3 8 3 4 6 8 9 5 0 410a 60 Hz BTU Hr 24 0 15 4 4 9 4 30 0 20 1 1 6 7 36 0 25 2 2 3 9 42 0 30 5 6 46 0 35 7 8 1 4 52 0 40 11 1 4 4 58 0 45 14 4 7 2 64 0 50 17 8 10 0 L S 12 0 0 757 12 0 0 757 12 0 0 757 12 0 0 757 12 0 0 757 12 0 0 757 12 0 0 757 12 0 0 757 20 3 6 5 25 8 3 4 31 3 0 4 36 7 2 6 40 2 4 5 45 5 50 8 10 4 56 0 13 3 Watts 3 760 16 7 3 884 0 130 120 110 7 2 2 dem L s 29 12 2 58 1 0 109 7 p O O olio 3 7 2 3 7 3 795 17 2 3 908 3 48 104 0 130 12 0 111 7 6 5 6 72 Ad 0 0 5 DA o N S gt I S c
54. 4 26 7 68 1 900 0 908 29 29 10 561 20 0 897 14 4 322 4 20 68 1 900 144 977 68 1 900 3 5 12 5 46 6 13 F___ USGPRM BTU Hr Watts 44 189 12 947 47 774 13 998 51 605 15 120 55 483 16 256 59 474 17 426 64 043 18 765 68 892 20 185 00 8 15 144 212 91 3 32 9 93 1 34 0 99 2 35 1 97 2 36 2 99 3 37 4 101 7 38 7 104 3 40 1 23 9 129 25 1 14 0 27 2 15 1 29 2 16 2 31 3 17 4 33 7 18 7 36 3 20 1 3 99 O0 51 k D 9 14 4 42 5 68 1 900 0 908 58 36 13704 20 0 897 144 47 9 74 68 1 900 14 4 53 3 68 1 900 144 58 6 5 30 68 1 900 107 0 39 0 74 031 148 47 17672 20 0 897 41 6 21 6 21 691 49 7Pa 0 20inH20 Ext Static co O 4 59 iN N O O h O L N 19 10 0 0 908 Compressor ZPS51K4E PFV TF 65 HACW P 1T oF BTU Hr BTU Hr BTU Hr Watts EER gt USGPM BTU Hr Amps C 80 6 27 0 80 6 27 0 80 6 27 0 80 6 27 0 80 6 27 0 80 6 27 0 80 6 27 0 80 6 27 0 43 7 6 5 44 6 7 44 3 6 8 44 6 7 0 45 7 2 45 7 4 46 7 6 46 7 7 L s 1 900 897 1
55. 40 0 104 0 40 0 104 0 40 0 104 0 40 0 104 0 48 3 125 2 126 52 2 126 52 2 126 52 2 127 14 4 0 908 0 908 USGPM L s 16 8 1 060 16 8 1 060 16 8 1 060 16 8 1 060 16 8 40 0 104 0 40 0 104 0 40 0 104 0 40 0 2 52 8 127 52 8 127 52 8 128 53 3 1 060 16 8 1 060 16 8 1 060 16 8 1 060 57 344 16 802 61 739 18 090 66 627 19 521 71 680 21 002 R410a 60 Hz 109 7 43 2 110 1 43 4 110 6 43 7 111 2 44 0 111 9 Watts 47 736 13 987 51 356 15 047 55 381 16 226 60 844 17 827 66 684 _ EM EC cC O IN 44 4 112 6 44 8 113 3 45 1 114 0 45 5 19 538 71 991 21 093 77 717 22 771 83 587 24 491 E 10 0 Compressor ZPS60K4E PFV Page 58 001223MAN 04 01 JAN 2014 HYDRONIC CAPACITY RATINGS continued TF 80 HACW P S R410a 60 Hz F 11 11 BIU Hr Watts 29 901 125 16 8 110 1 8 761 181 40 0 51 7 1 060 434 94 956 8246 323 6489 256 1040 126 168 1107 Watts 51 458 15 077 56 643 o b ala 6 1 3 4 6 7 Co gt O 4 ES O 28 pa n NI to 1
56. 53 854 2 623 19 6 63 90 2 73 6 10 6 63 423 95 z 0 1 27 0 83 708 14 3 12 7 5 152 10 627 15 779 5 74 17 2 32 2 0 757 23 1 9 18 583 0 1 8 0 80 6 48 11 500 58 3 22 3 16 209 35 198 51 407 2 909 16 9 8 12 0 88 9 10 9 61 955 27 0 8 9 708 146 12 4 4 749 10 313 15 062 25 6 35 0 0 757 31 6 18 153 80 6 48 1 500 58 9 21 7 15 755 34 214 49 970 3 083 15 5 83 100 2 0 93 7 10 7 61 110 8 3 27 0 8 9 708 14 9 12 1 4 616 10 025 14 641 28 3 37 8 0 757 34 3 6 0 17 905 80 6 48 1 500 59 5 21 1 15 290 33 203 48 493 3 265 8 105 12 0 98 6 10 6 60 253 27 0 8 9 708 15 3 11 7 4 480 9 728 14 208 311 40 6 0 757 37 0 17 654 80 6 48 1 500 60 2 20 4 14 811 32 164 46 975 3 455 13 1 9 110 12 0 103 4 10 4 59 386 33 9 43 3 0 757 39 7 17 400 37 3Pa 0 15inH20 Ext Static 4 e 27 0 708 15 7 11 3 4 340 9 424 13 764 gn o 9 D o o Q N D 42 T U Tl lt 01 JAN 2014 Page 53 001223MAN 04 CAPACITY RATINGS continued Heating Mode TF 65 HACW P 1T Nominal 5ton _ R410a 60 Hz T F BTU Hr Watts Amps Watts Watts W W C 20 14
57. 532 4 223 149 8 105 16 8 90 6 10 6 84 327 9 0 27 0 6 8 991 148 12 2 7 092 14 077 21 169 211 35 0 1 060 27 1 25 351 5 0 80 6 44 2 100 59 2 21 4 23 591 46 831 70 422 3 995 16 1 100 16 8 85 7 10 7 85 438 zt 27 0 6 9 991 15 4 11 6 6 727 13 353 20 080 4 37 26 7 40 6 1 060 32 5 24 708 80 6 45 2 100 60 3 20 3 22 304 44 274 66 578 4 463 13 8 85 110 16 8 95 4 10 4 83 191 29 4 43 3 1 060 35 2 24 375 49 7 0 20inH20 Ext Static p o 27 0 7 0 991 15 7 11 3 6 535 12 972 19 507 a O 3 9 D 0 0 Q N 70 e gt m 70 Tl lt 01 JAN 2014 Page 55 001223MAN 04 CAPACITY RATINGS continued TF 80 HACW P S R410a 60 Hz USGPM BTU Hr Amps Watts Watts W W oF F BTU Hr mm ee m 77 5 C 15 168 219 5 1 40 836 4 511 25 1 560 5 060 3 34 68 104 2 400 920 24 0 57 634 94 11 56 28 119651 148 200 40 0 1 133 33 3 13 3 16 887 lea 8 2 L 20 16 8 272 5 8 45 990 4 597 25 5 560 5 145 3 59 68 106 2 400 943 26 3 63 078 16 8 32 6 6 4 51 427 4 681 25 9 560 5 230 3 85 68 108 2 400 96 7 28 7 68 805 16 8 38 1 6 9 55 197 4 847 26 3 560
58. 663 37 3Pa 0 15inH20 Ext Static Co 1 iN 9 N al mi To 2 9 5 6 25 756 2 145 3 1 7 546 61 27 903 2 194 I O KJ EN gt IMS p Ol NO OIO N cO ajo TF 45 HACW P 1T R410a 60 Hz Tl F BTU Hr Waits L s Watts Watts Watts 44 3 1 200 57 3 23 3 115 569 29 862 45 431 566 14 0 13 0 4 562 8 749 13 311 45 11 200 57 5 23 1 15 422 29 579 45 001 7 2 566 142 12 8 4 519 8 667 13 185 45 7 1 200 57 7 22 9 15 262 29 273 44 535 76 566 143 12 7 n 57 13 9 62 16 7 67 19 4 Watts 28 6 USGPM L min 9 6 0 606 9 6 0 606 9 6 0 606 i 67 6 19 8 72 6 22 6 77 6 25 4 E e 10 6 5 9 10 6 5 9 10 6 BTU Hr Watts 51 026 14 951 51 042 14 955 51 023 O 27 1 433 207 O 1 563 D 207 26 2 7 68 24 1 7 06 27 0 80 6 27 0 1 694 ai 8 27 0 80 6 27 0 80 61 48 27 0 80 61 48 27 0 80 6 27 0 onm olo 0 6 7 9 47 8 3 49 SS 14 4 57 4 14 1 57 7 58 0 58 4 14 7 O 3 9 D 0 Q N 70 0 e
59. 9200 804 32 22x40 24x38 26x34 28x32 9800 98 34 24x42 25 40 26x38 28 x 34 908 34 25x40 26x38 28x34 2x4 30x36 32x34 33x33 Pb 3 32x38 34x36 35x35 30x45 34 40 36x38 37x37 01 JAN 2014 Page 17 gt lt gt lt O1 j N Return Air Airflow Diameter in M M 001223MAN 04 HY DRONIC INFORMATION HYDRONIC SYSTEMS GENERAL The most common applications for the TF Series hydronic heating are see drawing 000530PDG for typical zone types e radiant in floor heating e On demand domestic hot water e Swimming pool or spa The radiant in floor areas of the home may be sectioned into several areas called zones Each zone has its own thermostat allowing simple separate temperature control of the individual areas in the home A typical system consists of the heat pump the buffer tank and the zones The sole purpose of the heat pump is to maintain the buffer tank set point Its operation is independent of the zone operation HYDRONIC SYSTEM CONNECTIONS The port connections for the Indoor Loop are 1 brass FPT fittings They are marked as INDOOR IN and OUT Flow through the unit is provided by an external circulator connected to the Indoor Loop Circulator terminal strip in the electrical box of the unit The circulator is only powered when in hydronic heating mode and the compressor is operating Drawin
60. AT section otherwise proceed to STEP 4 STEP 4 FAULT CODE TROUBLESHOOTING section otherwise proceed to STEP 5 STEP 5 If a fault code appears once a signal is present at Y1 and the compressor does not attempt to start proceed to the If The compressor does not attempt to start attempts to start but cannot starts hard or starts but does not sound normal proceed to the COMPRESSOR TROUBLESHOOTING section otherwise proceed to STEP 6 STEP 6 If the compressor starts and sounds normal this means the compressor is OK and the problem lies elsewhere Proceed to the AIROPERATION TROUBLESHOOTING section or the HYDRONIC OPERATION TROUBLESHOOTING section NOTE To speed up the troubleshooting process the Test Jumper on the safety board can be placed to the YES position to change the anti short cycle timer to 5 seconds Be sure to set it back to NO when servicing is complete POWER SUPPLY TROUBLESHOOTING No power to the heat pump No display on thermostat Possible Cause Disconnect switch open if installed Verification Verify disconnect switch is in the ON position Recommended Action Determine why the disconnect switch was opened if all is OK close the switch Fuse blown Breaker Tripped Transformer breaker tripped Faulty transformer Faulty wiring between heat pump and thermo Stat Faulty Thermostat At heat pump disconnect box voltmeter shows 230VAC on the line side but not on
61. E Add enough antifreeze to allow for a temperature 20 F 11 C lower than the expected lowest loop fluid temperature entering the heat pump Although many different antifreeze solutions have been employed in geothermal systems the alcohols such as methanol or ethanol have the most desirable characteristics for groundloop applications The overall heat transfer characteristics of these fluids remain high although care must be taken when handling pure alcohols since they are extremely flammable Once mixed in a typical 25 by volume ratio with water the solution is not flammable In situations where alcohols are not allowed as a loop fluid due to local regulations then propylene glycol is a non toxic alternative which can be substituted Propylene glycol should only be used in cases where alcohols are not permitted since the heat transfer characteristics are less desirable and it becomes more viscous at low temperatures increasing pumping power The volume of fluid that your loop system holds can be closely estimated by totaling the number of ft of each size pipe in the system and referencing TABLE 15 the for approximate volume per 100 ft When the volume of the loop has been calculated and the appropriate amount of antifreeze is ready for addition by referencing TABLE 14 drain the equivalent amount of water from the flush cart or mixing barrel and replace it with the antifreeze When using alcohols be sure to inject below th
62. Hot Water Tank Domestic HOT OUT to house or mixing valve 125psig Pressure Relief Valve 120 140 F 50 60 C Electric or Gas Insulated Domestic Hot Water Tank 170 Plantation Petitcodiac NB E4Z 6H4 Single Unit Connection to DHW Pre Heat Tank Brass FPT Size Drawing Number REV SHEET 001223MAN 04 Sizing and Ductwork HEAT PUMP SIZING TABLE 8 depicts a rough guideline as to the size of home each heat pump size can handle for ground loop installations TABLE 8 Heat Pump Size vs Heated Area _for a Ground Loop System TABLE 9 depicts a rough guideline as to the size a home each heat pump size can handle for ground water installations TABLE 9 Heat Pump Size vs Heated Area for a Ground Water System THE TABLES ABOVE ARE FOR INFORMATION ONLY THEY SHOULD NOT BE USED TO SELECT A UNIT SIZE They simply show on average what size unit is required for a typical two level home main level and below grade basement with R 20 walls R 40 ceiling and average size and number of windows The Heated Area is the area of the main level The tables account for a basement the same size as the heated ar MARITME GEOTHERMAL LTD HIGHLY RECOMMENDS THAT A PROPER HEAT LOSS GAIN ANALYSIS BE PER FORMEDE BY A PROFESSIONAL INSTALLER WITH CSA APPROVED SOFTWARE BEFORE SELECTING THE SIZE OF UNIT REQUIRED FOR THE APPLICATION For heating dominant areas we recommend sizing the unit
63. IONALLY LEFT BLANK 001223MAN 04 Page 70 01 JAN 2014 THIS PAGE INTENTIONALLY LEFT BLANK 01 JAN 2014 Page 71 001223MAN 04 del LIMITED EXPRESS WARRANTY eE ti is expressly understood that unless a statement is specifically identified as a warranty statements made by Maritime Geothermal Ltd a corporation registered in New Brunswick Canada or its representatives relating to MG s products whether oral written or contained in any sales literature catalogue or agreement are not express warranties and do not form a part of the basis of the bargain but are merely MG s opinion or commendation of MG s products EXCEPT AS SPECIFICALLY SET FORTH HEREIN THERE IS NO EXPRESS WARRANTY AS TO ANY OF MG S PRODUCTS MG MAKES NO WARRANTY AGAINST LATENT DEFECTS MG MAKES NO WARRANTY OF MERCHANTABILITY OF THE GOODS OR OF THE FITNESS OF THE GOODS FOR ANY PARTICULAR PURPOSE LIMITED EXPRESS RESIDENTIAL WARRANTY PARTS IMG warrants its Residential Class products purchased and retained in the United States of America and Canada to be free from defects in material and workmanship under normal use and maintenance as follows 1 Air conditioning heating and or heat pump units built or sold by MG MG Units for five 5 years from the Warranty Inception Date as defined below 2 Thermostats auxiliary electric heaters and geothermal pumping modules built or sold by MG when installed with MG Units for five 5 years from t
64. MODEL NOMENCLATURE TF 65 HACW P 1 T CC SDERF xx IN Revision 01 02 etc Series TF Active Cooling Liquid to Air amp Liquid To Water Fan Outlet Orientation Nominal Size D Down flow 45 3 Ton F Field Configurable 55 4 E Fan Return Orientation o 10n L Left Return 80 6 Ton Single Stage R Right Return Functions H Heating Fan Motor AC Active Cooling ECM Variable Speed W Domestic Hot Water Fan Type Refrigerant D Direct Drive P R410a gt Air Coil Voltage Code S Standard 1 230 1 60 VAC 2 208 3 60 VAC 6 220 1 50 VAC Indoor Loop Exchanger 7 380 3 50 VAC Compressor Stages S 1 Stage T 2 Stage 2 stage unless unavailable due to voltage code refer to the Electrical Tables 001223MAN 04 C Copper Z Cupro Nickel CuNi Outdoor Loop Exchanger C Copper Z Cupro Nickel CuNi Page 2 01 JAN 2014 APPLICATION TABLE STAGES OUTDOOR INDOOR FAN CASE REVISIONS COIL COIL SDELF SDERF SDELF SDERF FUNCTION REFRIGERANT VOLTAGE m m m OD SDELF SDERF SDELF SDERF 5 SDELF SDERF HACW HACW 7 1 1 2 Z Z C C Z Z C C Z Z C C Z Z Z Z 6 7 01
65. T Fill gap between 2913 1 Barbed insulation and wall 1 FPT Suitable 1 MPT 3072 1 MPT with expanding foam Brass Fittings Adapter NOTES Circulator Pump Module should be mounted vertically to minimize the possibility of air locking the circulators All lines inside the structure and through the wall should be insualted with 3 8 to 1 2 thick closed cell pipe insulation e Holes through the foundation structure should be filled with expanding foam from both sides to prevent leakage e Proper drainage material should be used on the outside of the wall to prevent water buildup e Pump module fittings are available from Maritime Geothermal Ltd Geo Flo Part Numbers are indicated above italics e A pressure gauge is recommended if P T plugs are not installed e The air bladder tank should be pressurized to the desired static pressure of the ground loop before installation e For most applications a 1 pump module will accomodate NORDIC models sizes 25 and 45 and a 2 pump module will accomodate sizes 55 65 and 75 The total loop pressure drop including the headers inside piping and heat exchanger drop should be calculated based on the antifreeze mixture and lowest desired entering water temperature The pump module selected must provide the required flow at this calculated pressure drop value CIRCULATOR PUMP MODULE 3 WAY VALVE POSITONS LEFT SIDE VIEW 1 Valve in Loop fill purge position 2 Valve in HP fill purge position 3 V
66. XV Desuperheater I gt OUTDOOR 2 m OUT ACTIVATION TABLE gt ENERGIZED RV 1 NO Evaporator E RV 2 NO NC 1 YES NOTE NC 1 OPEN Compressor Accumulator lt OUTDOOR IN _ ae 170 Plantation Rd S RHERULT 01 JAN MARITIME GEOTHERMAL m _ D RHEAULT RHEA PRS JAN 10 JAN 10 000192 D RHEAULT D RHEAULT Approved jm ENG Modular Parallel TF Refrigeration 000166 GEDDES C GEDDES 01 DEC 10 By Circuit Air Heating Mode Initial Release D RHEAULT D RHEAULT 12 JAN 10 Size Drawing Number REV SHEET rove ate 001197RCD 04 1 of 1 DATE 01 JAN 2014 Page 47 001223MAN 04 01 JUN 12 REFRIGERATION CIRCUIT DIAGRAMS continued TF MOD PAR REFRIGERATION CIRCUIT AIR COOLING MODE Air Evaporator INDOOR OUT Hydronic Condenser AIR HANDLER FOR SPLIT SYSTEMS INDOOR IN Open to Suction Line Glass Low Pressure Cut out 1 Closed Loop DHW Low Pressure md Cut out 2 Open Loop Filter Drier Service Port High DHW OUT Optional Desuperheater gt OUTDOOR OUT ACTIVATION TABLE ITEM ENERGIZED RV 1 YES RV 2 NO NC 1 YES NOTE NC 1 is OPEN when energized Condenser
67. a quick check method to determine that the circulators are pumping Ensure the floor circulator is adequately sized to accomodate the type and number of zones connected to the system The aquastat probe should be placed all the way in the dry well and the end of the well where the probe wire is should be well insulated The loop may be filled with water or an antifreeze mix If the antifreeze used is flammable ie methanol and there are electric elements in the buffer tank ensure there is a method to prevent the electric elements from turning on if the tank is not completely full One method is to use a pressure switch to disable the elements should the pressure in the tank drop below a setpoint such as 5 or 10PSIG Allowing the elements to come on when they are not fully submerged will burn the element out and could cause an explosion PURGING PROCEDURE 1 Ensure the power to the heat pump and any other power supplies connected to the system floor circulator etc are turned off 2 The system can be filled using Boiler Drain 1 Connect the fill hose to the boiler drain and begin filling Open the tank PRV to purge the air out as the system fills Close the tank PRV when water begins to run out of it 3 Open the automatic air vent 4 Connect the purge hose to Boiler Drain 2 Close Ball Valve 1 Open Ball Valve 3 if installed Open Boiler Drain 2 Purge until air is no longer heard leaving the system Open the Tank PRV and
68. ally inspect the pump to see if shaft is turning Use an amprobe to measure current draw Check water flow and power to pump Check water lines for obstruction Replace blown fuse or reset Push reset button Replace if faulty Remove obstruction in water lines Acid treat the domestic hot water coil Faulty DHW cutout failed open Heat pump not running enough hours to make sufficient hot water Faulty DHW cutout failed closed Check contact operation Should close at 120 F and open at 140 F Note the amount of time the heat pump runs in any given hour Check contact operation Should close at 120 F and open at 140 F Replace DHW cutout if faulty Temporarily turn up the tank thermostats until colder weather creates longer run cycles Replace DHW cutout if faulty Thermostat on hot water tank set too high Should be set at 120 F 140 F if required by local code In line Flowmeter Digital Visually inspect the setting Dole flow control Valve Readjust the setting to 120 F 140 F if required by local code 5 a A rod t 5 Multimeter Voltmeter 01 JAN 2014 Page 45 The Dole flow control is a simple self cleaning device designed to deliver a constant volume of water from any outlet whether the pressure is 15 psig or as high as 125 psi The controlling mechanism consists of a flexible orifice
69. als and deliver heat based on logic described below This logic can also be seen in TABLE 4 and TABLE 5 in a truth table format or in DIAGRAM A and DIAGRAM B in flowchart format Simply put whenever there is a call on both air and hydronic the unit steps up to Stage 2 of the priority mode if it was not already there in order to satisfy the demand quickly and return to the non priority mode SINGLE MODE OPERATION If there is only an air mode call Y1 and or Y2 and or the unit operates in air mode as Stage 1 Stage 2 or Stage 3 If there is only a hydronic mode call Y1 and or Y2 the unit operates in hydronic mode as Stage 1 or Stage 2 AIR MODE PRIORITY OPERATION If there is a call for both Stage 1 air and Stage 1 hydronic the unit operates in Air Mode as Stage 2 If there is a call for both Stage 2 air and Stage 1 hydronic the unit operates in Air Mode as Stage 2 If there is a call for both Stage 2 air and Stage 2 hydronic the unit operates in Air Mode as Stage 2 HYDRONIC MODE PRIORITY OPERATION If there is a call for both Stage 1 air and Stage 1 hydronic the unit operates in Hydronic Mode as Stage 2 If there is a call for both Stage 2 air and Stage 1 hydronic the unit operates in Hydronic Mode as Stage 2 If there is a call for both Stage 2 air and Stage 2 hydronic the unit operates in Hydronic Mode as Stage 2 NOTES Stage 3 W2 of Air Mode overrides Hydronic Mode even if Hydronic Mode has priorit
70. alve in normal running position Ground Loo Ground Loop Ground Loop P rge Cart Jj Purge Cart Heat Pump Heat Pump Heat Pump _ C en BY ad DEC 170 Re ris Geddes Petitcodiac NB MARITIME GEOTHERMAL m lt lt Chris Geddes 09 DEC 08 Drawing N _ C rawing Name Geo Flo Circulator Pump Module _ 14 C ERR Installation Brass FPT 01 Initial Release c GEDDES GEDDES Size Drawing Number REV SHEET REV IMPL BY APVD BY RE 000906PDG 01 of 1 01 JAN 2014 Page 27 001223MAN 04 Startup Procedure The following steps describe how to perform the startup procedure of the geothermal heat pump The TF Series Two Stage R410a Air and Hydronic Startup Records located in this manual are used in conjunction with this startup procedure to provide a detailed record of the installation completed copy should be left on site a copy kept on file by the installer and a copy should be sent to Maritime Geothermal Check the boxes or fill in the data as each step is completed For data boxes circle the appropriate units Fill in the top section of all three copies or one copy if photocopies can be made after the startup has been completed PRE ST ART INSPECTION Ductwork 1 Verify that all ductwork has been completed and is firmly attached to the unit Verify that any dampers or diverters are properly set for
71. ay be changed as desired however Stage 1 setpoint should not exceed 120 F 49 C Exceeding this set point limit will cause the heat pump operating pressures to ap proach the safety control settings possibly causing nuisance shut downs TABLE 3 Typical Aquastat Settings Activation Activation is indirectly set by the Setpoint and Delta values If only floor zones are being heated it is highly rec ommended to drop each of the setpoints by 15 F 8 C for increased efficiency 01 JAN 2014 Page 7 It is recommended that a buffer tank with electric elements be selected to provide auxiliary backup heat The tank ele ment thermostats can be set to a low value of around 60F 15C which will prevent the hydronic system from becoming too cold should there be a failure in the heating system Drawing 000344CDG shows how atypical zone system would be setup with the TF unit The zone controls and heat pump operate independently there are no connections between the two systems PRIORITY SLECTION Units are shipped setup for air priority To convert to hydronic priority simply remove the jumper wire between the two PR terminals on the aquastat terminal strip See the electrical box amp schematic diagrams for more information OPERATIONAL DESCRIPTION The TF unit is designed to deliver heat to the mode that requires it the most Once the default priority has been select ed the unit will interpret the control sign
72. c the valve in the open position before soldering NOTE Dole valves can be quite noisy Placing a the optional ball valve approximately two feet from the Dole valve can reduce the noise level Alternately the Dole valve can be placed outside the home Dole Valve Recommended To for Flow Setting Second Well Field Ditch 1 Ball Pond optional Air Bladder Tank Pressure Pressure Gauge Switch 0 60PSIG From C Well Pump 125psig Air Bladder Tank Table HEAT PUMP Air Bladder Tank Size MODEL SIZE IGAL USGAL Litres To House Based on 2 minute well pump run time larger tank may be used if a longer run time is desired TACO 24VAC Slow Close Water Valve Generic 24 Solenoid Water Valve Connect the harness plug to the connector inside the heat pump ELECTRICAL NOTE Remove the head from the valve before soldering the valve in place 4 BE NOTE Ensure the pin is installed in the proper orientation as shown here when re installing the head Connect the harness plug to the connector inside the heat pump ELECTRICAL CONNECTOR Piping is as shown above Chris Geddes 1 Chris Geddes 5 Approved By Geddes Release T C GEDDES s DEC 08 SSS By 01 JAN 2014 GEOTHERMAL 170 Plantation Rd Petitcodiac NB MARITIBIE 5 1 47 6
73. ch like a small spring It is recommended that the pipe be below the frost line when possible for maximum freeze protec tion When discharging into a river or stream or above the surface of a pond the same guidelines should be followed as described in the paragraph above for the percolation method When discharging the waste water below the surface of a pond the discharge pipe should be placed below the frost line to prevent the pipe from freezing As opposed to the percola tion method water will remain in the end of the pipe It is rec ommended that the surface of the pond be lower than the instal lation location of the heat pump where practical This reduces the back pressure generated by the weight of the water in the pond Typical Ground Water Installation for Size 25 75 Heat Pumps for Units With Brass FPT Fittings TACO 24VAC EBV Electronic Ball Valve NOTE Refer to the heat pump labels HEAT PUMP for connection locations CONNECTIONS Connect the harness plug to the connector inside the heat ELECTRICAL CONNECTOR 125psig PRV OUTDOOR OUT SUPPLY OUT 1 Brass FPT P T Plugs OUTDOOR IN SUPPLY IN 1 Brass FPT 1 Line m d 1 Ball Valve It is recommended that either unions or boiler drains be installed to provide connection points for flushing the coaxial exchanger should it need to be cleaned due to scaling CWYEE 1 Line NOTE Remove valve head and manually place Valve Et
74. clean the heat pump has no effect other than reducing the temperature of the water Refer to the Ground Water Disposal methods diagram for typical disposal method diagrams e Second well return well e Percolation Drain ditch leaching field e Pond river or stream ENSURE SELECTED METHOD CONFORMS TO LOCAL CODES 01 JAN 2014 A return well should be a minimum of 80 ft from the supply well for residential applications The water returned to the well will not necessarily be pumped into the same aquifer depend ing on underground conditions The return well must be able to supply at least the same quantity of water as the amount you wish to recharge into it If the static level level when not being pumped of a well is high 10 to 20 ft from the surface it may be necessary to place a well cap on the well to keep the return water from flowing out the top of the well This cap is commonly required since a certain amount of pressure is needed to force the return water back down the well if the static level is high Water discharged by percolation will generally soak into the ground within a distance of 50 to 100 ft If suitable care is taken to ensure that the drain pipe runs downhill and the end of the pipe is protected by a bale of hay or spruce bows etc the end of the pipe will not freeze as the pipe will empty out when the heat pump shuts off and the water valve closes When snow comes it will usually cover the entire process mu
75. cycles resulting in higher efficiency and a higher comfort level It has three modes of operation air heating air cooling or hydronic heating NOTE Air heating and hydronic heating cannot be accomplished simultaneously An electrically commutated ECM fan with several speed options is standard The motor has a soft start function for im proved efficiency and reduced wear The unit has several key features that are described in the specifications document for the particular heat pump Please request a copy if desired or visit www nordicghp com UNPACKING THE UNIT When the heat pump reaches its destination it should be unpacked to determine if any damage has occurred during shipment Any visible damage should be noted on the carrier s freight bill and a suitable claim filed at once The heat pump is well constructed and every effort has been made to ensure that it will arrive intact however it is in the customer s best interest to examine the unit thoroughly when it arrives OPTIMUM PLACEMENT For liquid to air units to achieve the greatest efficiency the heat pump should be centrally located in the home with respect to the conditioned space This design provides the utmost in economy and comfort and usually can be accomplished in harmony with the design of the home A heating system cannot be expected to produce an even warmth throughout the household when it is located at one end of the structure and the warm air is transmitted w
76. d Verify 24VAC is present between each flow switch pin on the control board and the C terminal of the ter minal strip while there is flow through the unit 24VAC is present across each FLOW SWITCH terminal and C but not voltage is present across CC on the control boardand C Page 35 Replace flow switch if signal is not present at both terminals on the control board Replace control board 001223MAN 04 Compressor will not start Compressor starts hard Compressor Stage 2 will not activate 001223MAN 04 COMPRESSOR TROUBLESHOOTING Fault Possible Cause Verification Recommended Action Faulty control board Faulty run capacitor Single phase only Measuring from C on the terminal Strip verify there is voltage at HP1 HP2 LP1 LP2 and both flow pins but no voltage present at CC Check value with capacitance meter Should match label on capacitor Compressor will hum while trying to start and then trip its overload Replace control board Replace if faulty Loose or faulty wiring Faulty compressor contactor Check all compressor wiring includ ing inside compressor electrical box Voltage on line side with contactor held closed but no voltage on one or both terminals on the load side Points pitted or Or 24VAC across coil but contactor will not engage Fix any loose connections Re place any damaged wires Replace contactor Thermal
77. d REV 11 Table 21 Standard Capacity Ratings Ground Water Cooling 60Hz EAT 80 6 F 27 C ELT 59 F 15 C Pressure Input USG L s PSI kPA Tons Lis Watts BTUHr kW WW 45 3 8 06 50 34g 1030 486 895 33 900 9 9 11 11 10 120 076 47 322 Stage1 1240 585 1 525 43 300 127 831 Stage2 1500 708 2 515 56000 16 4 6 52 12 14 4 0 91 Stage 1 1540 727 1 760 51 300 8 53 4 2 Stage 2 1900 897 2 950 66 700 6 63 Stage 1 1660 783 2 485 61 100 17 9 7 21 KES uka on SR Table 22 Standard Capacity Ratings Ground Loop Hydronic Heating 6 2 STAGE 1 ELT 41 F 5 C EWT 104 F 40 C STAGE 2 ELT 32 F 0 Liquid Flow Outdoor 4 Tons IGAL USG L s PSI Watts BTU Hr 10 120 076 Stage 2920 31 100 91 313 Stage2 3 950 38 300 112 285 Stage 1 3 340 38 200 _ 408 545 iso 27 we 52 402 mm mmc m 15 NaCl by Weight Ground Loop Fluid REV 11 Table 23 Standard Capacity Ratings Ground Water Hydronic Heating 60 2 EWT 104 F 40 C ELT 50 F 10 C Liquid Flow Outdoor Input Model Size Indoon Pressure Drops Energy use Ls Psi Watts kw ww ofe e s 5 sz DM i Stage2 2 595
78. d a jumper wire is placed across the FLOW SWITCH terminals If a flow switch is desired the jumper can be removed and the two leads from the flow switch can be connected to the FLOW SWITCH terminals on the safety board The flow switch is ignored for 30 seconds on compressor startup to allow time for flow to be established The high and low pressure controls are monitored at all times The compressor will not be able to start if either of them has a fault The control board has an on board LED and a FAULT pin with a 24VAC output An external indicator or relay can be connected across the FAULT pin and ground if external signal ing is desired Should a fault occur the LED will flash the code of the fault condition while the safety control in question is open The codes are shown in TABLE 7 The control board will lock 10 01 JAN 2014 out the compressor for five minutes when a fault occurs Three retries per fault condition are allowed within 60 minute period If the fault condition occurs fourth time the control board will permanently lock out the compressor and energize the FAULT pin This can only be reset by powering down the unit The LED will flash the fault code until the unit is reset If the control board enters permanent lockout mode there is a serious problem with the system and it must be rectified if the unit is to maintain good service TABLE 7 Control Board Fault Codes Low Pressu
79. dry contacts Fan speed will be reduced by 15 for zone Priority When LED applications 5 unit is operating in air mode Plenum Heater Wiring Low 6 High 6 zoom Use 18 2 conductor cable D to connect Electrical 1 1 to _ Plenum Heater C 1 1 Soo 4 25 POWER Aquastat Wiring LO 5 Ensure red wire is 28 connected to the 208 Use an 18 4 conductor cable Connect the four 5 terminal on the Aquastat Connections Y2A two stage models Indoor transformer instead of only RA and CA to the aquastat as per 2 a Loop Relay the 240V terminal connection diagram 001224CDG 01 located on 2 the front of the elctrical box cover 24 2 22 GND gt S Priority Selection 2 E Air Priority Connect jumper between terminals Field LL dj PR and PR on terminal strip Wiring Water Priority Remove the jumper between terminals 230VAC PR and PR on terminal strip 115VAC 5 Outdoor Indoor Circulator Pumps REFER TO LABEL IN UNIT FOR MAX AMPS L2 Connect 115VAC circulators to 115V N Connect 230VAC circulators to 230V L1 Connect Gnd to Gnd Lug Gnd Label 208 230 115VAC CONNECTIONS Wire Colour L2 Gnd Lug Potential Connect to Gnd Lug kk Heat Pump Electrical Service Requirements
80. e water line to reduce initial volatility of the pure antifreeze If the loop is large it may be necessary to refill the tank with antifreeze 001223MAN 04 Page several times to get all the antifreeze into the loop Pump the loop for 5 to 10 minutes longer to ensure the remaining fluid has been well mixed TABLE 15 Volume of fluid per 100 ft of pipe Volume 100ft Type of Pipe USgal L Copper 1 1 1 4 Other Item Volumes Purge Cart Tank INITIAL PRESSURIZATION At this point open all valves in the flow circuit and slowly close off the supply and return flush cart valves in a manner thai leaves about 20 30 psig on the system If an air bladder expansion tank is used it should be charged to the above pressure before actual water pressure is put on the system Systems without an expansion tank will experience greater fluctuations in pressure between the heating and cooling seasons causing pressure gauges to have different values as the loop temperature changes This fluctuation is normal since expansion and contraction of the loop fluid must be handled by the elasticity of the plastic loop e Pressurize the loop to a static pressure of 45 psig when installing a system in the fall going into the heating season e Pressurize the loop to a static pressure of 25 psig when installing a system in the spring or summer going into the cooling season After operating the heat pump for a per
81. ended Action Faulty High Pressure Con trol open Must be a signal present on Y1 for this test HP pressures must be at Static levels Faulty control board Faulty Low pressure con trol open Must be a signal present on Y1 for this test HP pressures must be at Static levels Faulty control board Unit out of refrigerant Flow switch jumper re moved or faulty Verify if there is 24VAC across HP1 on the control board and C of the ter minal strip as well as HP2 and C 24VAC is present across HP1 and C1 and HP2 and C but no voltage is present across CC on the control board and C Verify if there is 24VAC across LP1 on the control board and C of the ter minal strip as well as LP2 and C 24VAC is present across LP1 and C and LP2 and C but no voltage is present across CC on the control board and C Check static refrigeration pressure of the unit for a very low value Verify jumper is in place between pins marked FLOW SWITCH Correct or replace wiring Replace thermostat Replace high pressure control if voltage is present on HP1 but not on HP2 Replace control board Replace high pressure control if voltage is present on LP1 but not on LP1 Replace control board Locate the leak and repair it Spray nine a sniffer and dye are common methods of locating a leak Place a jumper if missing Flow switch faulty Only if installed Faulty control boar
82. ers operation of the heat pump with an aquastat The aquastat connection diagram CDG can be found near the end of this manual and on the electrical box cover of the unit It provides a description of the signal connections in the heat pump They are also listed in TABLE 2 TABLE 2 Aquastat Signal Description Heat Pump Stage 2 Hydronic Heat Pump Stage 1 Hydronic RA 24VAC Hot 24VAC Common Ground The aquastat can be placed anywhere within the range of the probe cable The probe s should be inserted into a dry well in or near the top of the tank for optimal operation refer to drawing 000533PDG If a dry well is not available it may be possible to fix the probe to the tank inside the insulation TABLE 3 shows typical settings for the aquastat With these settings Stage 1 will activate when the tank temperature reaches the activation point If the load is too great the tank temperature will continue to drop until Stage 2 is activated As the tank temperature stops dropping and begins to increase Stage 2 will turn off before Stage 1 rather than at the same time as Stage 1 There are three main advantages to this Less aquastat probe lag leading to reduced overshoot as the tank temperature rate of change is reduced when only Stage 1 is active Prolonged Stage 1 runtime leads to increased overall effi ciency as Stage 1 has a higher COP than Stage 2 Reduced number of compressor starts The settings m
83. es not work Leaking check valve Valve will be cold Remove the Try tapping the valve and switching Located in the receiver cap from the roto lock fitting on from air heat to water heat a few liquid line out the receiver and close the roto times Replace the check valve if the lock valve Unit should function problem persists normally there may be a sound change as the roto lock is closed Low refrigerant charge Entering liquid temperature flow Locate the leak and repair it Spray and entering air temperature are nine a sniffer and dye are common good but suction is low Check methods of locating a leak static refrigeration pressure of the unit for a very low value Faulty compressor not Pressures change only slightly Replace compressor pumping from static values when compres sor is started 01 JAN 2014 Page 37 001223MAN 04 AIR OPERATION TROUBLESHOOTING HEATING MODE High Suction Pressure may appear to not be pumping Compressor frosting up TXV frosting up Random high pressure trip does not occur while on site Possible Cause TXV adjusted too far open TXV stuck open Leaking reversing valve 1 Leaking reversing valve 2 Verification Verify superheat It should be tween 8 12 F 3 6 Superheat will be low if TXV is open too far Adjusting the TXV does not affect the superheat or the suction pres sure Low super heat and discharge pressure Reversing
84. essure Unit is overcharged High sub cooling low delta T Remove 1 2lb of refrigerant at a time Only possible if unit has across air coil and verify that the discharge pres been opened in the field sure reduces and incorrectly charged Low Suction Low or no Outdoor liquid Delta T across the Outdoor Loop Determine the cause of the flow re Pressure flow ports should be between 5 7 F striction and correct it 3 4 C or compare pressure Verify pumps are working and sized drop to the tables for the unit correctly for ground loop systems Verify well pump and water valve is working for ground water systems Entering liquid tempera Measure the entering liquid tem Increase the size of the ground loop ture too cold perature Most likely caused by undersized ground loop Dirty or fouled coaxial Disconnect the water lines and Have a qualified service technician heat exchanger check the inside of the pipes for backflush the coaxial exchanger typically for ground water scale deposits unlikely for ground loop Return air too cold Measure return air temperature Restrict air flow temporarily until Should be above 60 F 15 C room comes up to temperature stuck almost closed Adjusting the TXV does not affect Adjust the TXV all the way in and out or partially blocked by for the superheat or the suction pres few times to loosen it Replace eign object sure TXV may be frosting up TXV if this do
85. essure drop is increased when air is forced to change direction rapidly around a sharp or irregular corner It is recommended that flexible collars be used to connect the main trunks to the heat pump This helps prevent any vibrations from travelling down the ductwork If a plenum heater is in Stalled the collar should be at least 12 away from the heater elements The first 5 10 feet of the main supply trunks should be insulat ed with acoustical duct insulation to further inhibit any noise from the unit from travelling down the ductwork If a plenum heater is installed insulation should not be placed within 12 of the heater elements Drawing 001201CDG shows a typical in stallation DUCT SYSTEMS GRILL LAYOUT Most forced air heating systems in homes have the floor grills placed around the perimeter of the room to be heated Supply grills should be placed under a window when possible to help prevent condensation on the window As mentioned in the pre vious sub section supply grill leads should be 6 in diameter 28 sq in each to allow 100cfm of air flow In a typical new construction there should be one supply grill for every 100sq ft of area in the room When rooms require more than one grill they should be placed in a manner that pro motes even heat distribution such as one at each end of the 14 01 JAN 2014 room It is always a good idea to place a damper in each grill supply or place adjustable grills so that any i
86. f the Limited Express Residential Warranty MG will only be obligated MG s option to repair the failed part or unit or to furnish a new or rebuilt part or unit in exchange for the part or unit which has failed If after written notice to MG s factory in Petitcodiac New Brunswick of each defect mal function or other failure and a reasonable number of attempts by MG to correct the defect malfunction or other failure and the remedy fails of its essential purpose MG shall refund the purchase price paid to MG in exchange for the return of the sold good s Said refund shall be the maximum liability of MG THIS REMEDY IS THE SOLE AND EXCLUSIVE REMEDY OF THE BUYER OR PURCHASER AGAINST MG FOR BREACH OF CONTRACT FOR THE BREACH OF ANY WARRANTY OR FOR MG S NEGLIGENCE OR IN STRICT LIABILITY LIMITATION OF LIABILITY MG shall have no liability for any damages if MG s performance is delayed for any reason or is prevented to any extent by any event such as but not limited to any war civil unrest government restrictions or restraints strikes or work stoppages fire flood accident shortages of transportation fuel material or labour acts of God or any other reason beyond the sole control of MG MG EXPRESSLY DISCLAIMS AND EXCLUDES ANY LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGE IN CONTRACT FOR BREACH OF ANY EXPRESS OR IMPLIED WARRANTY OR IN TORT WHETHER FOR MG s NEGLIGENCE OR AS STRICT LIABILITY JOBTAINING WARRANTY PERFORMANCE Normally
87. faulty Single phase only Compressor is tight due to damaged mechanism Faulty Stage 2 module Replace with new one and verify compressor starts properly Compressor attempts to start but trips its internal overload after a few seconds Run capacitor has been verified already Verify if 24VAC is present across Y2 and C of the terminal strip Page 36 Replace if faulty Attempt to rock compressor free If normal operation cannot be es tablished replace compressor Replace module if signal is pre sent Check wiring if signal is not present 01 JAN 2014 AIR OPERATION TROUBLESHOOTING HEATING MODE Possible Cause Recommended Action High Discharge Air Flow See Fan Troubleshooting section Correct the problem adjusted too far Verify superheat It should be Adjust to obtain 8 12 F closed between 8 12 F 3 6 Super 3 6 superheat heat will be high if TXV is closed too far stuck almost closed Adjusting the TXV does not affect Adjust the all the way in and out or partially blocked by for the superheat or the suction pres few times to loosen it Replace eign object sure TXV if this does not work Filter drier plugged Feel each end of the filter drier it Replace filter drier should be the same temperature there is a temperature differ ence then it is plugged Also causes low suction pr
88. g 001046PDG shows a typical piping configuration for a single unit with a buffer tank This is a guideline for a simple installation This is a typical installation where there may be one or several floor zones or even fan coils There are many other configurations such as multiple units connected to one buffer tank on demand domestic only etc It is recommended that the hydronic system be designed by a qualified system designer to ensure proper functionality Drawing 001055PDG shows two typical on demand domestic hot water systems dedicated and zoned For a dedicated set up there are no zones and the home is heated solely by air The TF unit can very easily be switched between air or hydronic priority during installation simply by placing or removing a jump er between the set of PR pins on the aquastat terminal strip Jumper in place sets the unit to air priority WARNING Most indirect tank heat transfer ratings are done at high water temperatures such as 160 F 71 C Be sure to select an indirect tank that has a transfer rate of at least the heat pump capacity at open loop conditions refer to TABLE 20 Failure to do so can lead to nuisance high pressure trips due to inadequate heat transfer from the heat pump to the tank 001223MAN 04 Page 18 01 JAN 2014 Typical Buffer Tank Configuration Four Port Tank Expansion Tank Automatic Air Vent PUMP EF Pressure CONNECTIONS OF TIONAL 125
89. g the TXV does not affect the superheat or the suction pres sure Points pitted or burned Contactor sometimes sticks causing the com pressor to run when it shouldn t trip ping the high pressure control Adjust the TXV all the way in and out a few times to loosen it Replace TXV if this does not work Replace contactor Verify wiring is good Correct the wiring or replace the circulator 01 JAN 2014 Page 43 001223MAN 04 PLENUM HEATER TROUBLE SHOOTING Faut Possible Cause Verification Recommended Action No 230VAC across plenum heater L1 and L2 Disconnect switch open if installed Verify disconnect switch is in the ON position Determine why the disconnect switch was opened if all is OK close the switch Fuse blown Breaker Tripped At plenum heater disconnect box if installed voltmeter shows voltage on the line side but not on the load side Check if breaker is tripped Reset breaker or replace fuse at plenum heater disconnect box Replace fuse with proper size and type Time delay type D Same Line to L1 and L2 No W2 signal at Heat pump termi nal strip No call for auxiliary or emergency heat from ther mostat Faulty thermostat Faulty thermostat Measuring L1 to ground and L2 to ground both yield 115VAC but L1 to L2 yields OVAC Verify that the thermostat is indicat ing that auxiliary or emergency heat should be on Thermosta
90. he Warranty Inception Date as defined below 3 Sealed refrigerant circuit components of MG Units which components only include the compressor refrigerant to air water heat exchangers reversing valve body and refrigerant metering device for ten 10 years from the Warranty Inception Date as defined below 4 Other accessories and parts built or sold by MG when installed and purchased with MG Units for five 5 years from the date of shipment from MG 5 Other accessories when purchased separately for 1 year from the date of shipment from MG The Warranty Inception Date shall be the date of original unit installation as per the date the installation Startup Record or six 6 months from date of unit shipment from MG whichever comes first To make a claim under this warranty parts must be returned to MG in Petitcodiac New Brunswick freight prepaid no later than ninety 90 days after the date of the failure of the part If MG determines the part to be defective and within MG s Limited Express Residential Warranty MG shall when such part has been either replaced or repaired return such to a factory recognized distributor dealer or service organization freight prepaid The warranty on any part repaired or replaced under warranty expires at the end of the original warranty period LIMITED EXPRESS RESIDENTIAL WARRANTY LABOUR This Limited Express Residential Labour Warranty shall cover the labour incurred by MG
91. he proper mix of antifreeze for the intended application Record the type of antifreeze and the mixture value on the startup sheet circle Vol or Weight 4 Record the static loop pressure on the startup sheet Outdoor Loop Ground Water 1 Verify there are no leaks in the connections to the unit Verify the water valve is installed and properly oriented in the return line 2 Verify that there is flow control in the return line Domestic Hot Water if equipped 1 Verify that all shutoff valves are fully open and there are no restrictions in the piping from the heat pump to the domestic hot water tank 2 Verify that the entire system has been flooded and all the air has been purged as much as possible Further purging may be required after the system has been operating for a while 3 Verify that the brown wire with the insulated terminal is disconnected in the electrical box Refer to the schematic diagram for more information Electrical 1 Ensure the power to the unit is off Ensure the power to the plenum heater is off if equipped 2 Verify all high voltage connections Ensure that there are no stray wire strands all connections are tight and the ground wire is connected tightly to the ground connector for the heat pump and plenum heater 3 Record the fuse circuit breaker size and wire gauge for the heat pump Record the fuse circuit breaker size wire gauge and size of the plenum heater if installed 4 Verify that the con
92. ht Side View Right Return Left Side View Right Return Size 55 80 001223MAN 04 Page 66 01 JAN 2014 APPENDIX A Control Board Specifications Anti short cycle lockout control Pressure flow switch monitoring Alarm output during lockout 5 minute anti short cycle delay 5 second test mode LED fault codes for lockout status Test mode for reduced test time Conformally coated for moisture protection Lockout Protection Module Mode of Operation The Control will Begin the S minute time delay upon a Y call from the therrmosat After the time delay expires the compressor contactor Will be energized as long as the high and low prassure switches are closed either switch is open after the delay expires the compressor will not energize either switch opens while the compressor is energized it will irmmeciately and begin the anti short cycle delay compressor will not be allowed to tum en again until the anti short cycle delay expires and both pressure switches closed The flow switch will have 30 second bypass timer in which the control will ignore an open flow switch for the first 40 seconds if the flow switch remains open after the 30 second timor expires the unit will de energize the compressor and begin the anti snort cycle delay If the control experiences threw pressure low pressure or fow switch faults in 60 minuto perd it
93. inside of the pipes for scale deposits Increase the size of the ground loop Have a qualified service techni cian backflush the coaxial ex changer Indoor Loop entering liq uid temperature too cold Measure temperature Should be above 60 F 15 C Page 42 Restrict Indoor liquid flow tempo rarily until buffer tank comes up to temperature 01 JAN 2014 HYDRONIC OPERATION TROUBLESHOOTING HEATING MODE EL EEE Low Suction Pressure continued High Suction Pressure may appear to not be pumping TXV stuck almost closed or partially blocked by for eign object Faulty NO solenoid valve coil Faulty NO solenoid valve Leaking check valve Located in parallel with the NO valve Low refrigerant charge Faulty compressor not pumping Leaking reversing valve 1 TXV adjusted too far open TXV stuck open Adjusting the TXV does not affect the superheat or the suction pres sure may be frosting up Verify solenoid by removing it from the shaft while the unit is running There should be an audible click sound if the solenoid is working A click can be heard when the coll is energized but the valve is cold instead of warm Valve will be cold instead of warm Entering liquid temperature flow and entering air temperature are good but suction is low Check static re frigeration pressure of the unit for a very low value Pressures change only slightly from static
94. iod of time any residual air in the system should be bled off and the static pressure should be verified and adjusted if necessary Add additional water antifreeze mix with the purge cart to bring the pressure back to the original setting if required PIPE INSULATION All ground loop piping inside the structure between the structure entry point and the heat pump should be insulated with 3 8 thick closed cell pipe insulation to prevent condensation and dripping onto floors or walls 26 01 JAN 2014 Geo Flo Circulator Pump Module Installation Units with Brass FPT Fittings Air Bladder 2911 1 to 1 1 4 PE Socket Tank Optional Pressure G 1 Fill amp Purge access ports oc Soler 2914 Camlocks can be used for quick connections Fittings can be removed and reused on other jobs when purging is complete Boiler lt Drain Connect wiring to appropriate No voltage terminals marked OUTDOOR CIRCULATORS in NN the heat pump electrical box 3 way 2 2 2 Valve Valve NOTE 1 or 2 Basement Refer to the heat pump labels pump Wall for connection locations module HEAT PUMP CONNECTIONS 999 lt OUTDOOR IN 0 lt 1 1 4 3408 SUPPLY IN 1 Flexible Rubber Hoses copper or other suitable gt OUTDOOR OUT Q piping 100 psig min SUPPLY OUT gt Available Fittings E 3144 1 Sweat optional P
95. ion about the size of wire for the con nections as well as the recommended breaker size A properly qualified electrician should be retained to make the connections to the heat pump and associated controls The connections to the heat pump MUST CONFORM TO LOCAL CODES CIRCULATOR PUMP MODULE WIRING GROUND LOOP ONLY The heat pump has provisions for connecting the circulator pump module so that the pumps will be turned on whenever the compressor operates Connect the circulator pump module to the appropriate two terminals of the terminal strip marked OUTDOOR CIRCULATORS in the heat pump as per the volt age of the circulator pump module Ensure that the total current draw does not exceed the value indicated on the label in the heat pump electrical box Refer to the electrical box drawing on the electrical box cover for more information INDOOR LOOP CIRCULATOR WIRING The Indoor Loop circulator provides flow between the heat pump and the buffer tank The heat pump has provisions for connecting the Indoor Circulator so that it will be turned on whenever the compressor operates Connect the Indoor Loop circulator to the appropriate two terminals of the terminal strip marked INDOOR CIRCULATORS in the heat pump as per the voltage of the circulator pump module Ensure that the total current draw of all pumps connected to the terminal strip does not exceed the value indicated on the label in the heat pump electrical box Refer to the electrical b
96. ith uninsulated metal ductwork If possible the access panels should remain clear of obstruction for a distance of two feet to facilitate servicing and general maintenance Raising the heat pump off the floor a few inches is generally a good practice since this will prevent rusting of the bottom panel of the unit We recommend that the heat pump be placed on a piece of 2 thick styrofoam The styrofoam will smooth out any irregularities in the cement floor and deaden any compressor noise emitted from the bottom of the cabinet The heat pumps come equipped with an air filter rack which can be installed with the removable end where the filter is in serted on either side to facilitate changing the filter ELECTRICAL CONNECTIONS The heat pump has a concentric 1 093 0 875 knockout for power supply connection to the electrical box There is also a 0 875 knockout for connection to the circulator pump module for ground loop applications There are two 1 2 openings with plastic grommets grommet hole is 3 8 in the upper section of the electrical box one for the thermostat connections and one for the optional plenum heater connections A schematic diagram SCH and electrical box layout diagram ELB can be found inside the electrical box cover of 001223MAN 04 Page 6 the unit as well as in the Model Specific section of this manual The Electrical Tables in the Model Specific section and the ELB diagram contain informat
97. ker on transformer is sticking Out Push breaker back in If it trips again locate cause of short circuit and correct Faulty transformer Transformer breaker is not tripped 230VAC is present across L1 and L3 of the compressor contactor but 24VAC is not present across R and C Replace transformer Faulty wiring between 24VAC is not present across 24V heat pump and aquastats and COM at the top of the aquastat Correct the wiring Faulty aquastat 24VAC is present across 24Vand COM of the aquastat but there is no display Incorrect aquastat setup Aquastat does not indicate S1 on the display Replace aquastat Correct the setup Faulty aquastat to heat pump wiring 24VAC not present across Stage 1 C and COM of the aquastat Faulty aquastat to heat pump wiring 24VAC signal present across Stage 1 NO and COM of the aquastat but not present across Y1A and CA of the terminal strip Correct or replace wiring Correct or replace wiring Faulty aquastat No 24VAC between Stage 1 NO and COM of the aquastat when S1 is indicated on the aquastat display Incorrect aquastat setup Aquastat does not indicate S2 on the display Faulty aquastat to heat 24VAC not present across Stage 2 pump wiring C and COM of the aquastat Faulty aquastat to heat pump wiring 24VAC signal present across Stage 2 NO and COM of the aquastat but not present across Y2A and CA of the terminal strip
98. let any air out Close Boiler Drain 1 2 and Ball Valve 1 and 3 if installed 5 Zone can be purged by moving the fill hose turn it off first from Boiler Drain 1 to Boiler Drain 4 Connect the purge hose to Boiler Drain 3 Close Ball Valve 2 Open Boiler Drains 3 and 4 Purge each zone individually and then open them all at once Zones can be opened using the individual thermostats or most can be opened manually Open the Tank PRV intermittently to purge any air during this process When purging is complete pressurize the system between 15 and 25PSIC 7 Turn the fill hose off Close Boiler Drains 3 and 4 Open Ball Valve 2 Remove the fill turn the hose off first and purge hoses 8 Repeat steps 4 to 6 as necessary if air is still present in the system 170 Plantation Rd Chris Geddes GEOTHERMAL Petitcodiac NB MARITIME C Approved By ENG pale Drawing Typical Buffer Tank Configuration Chris Geddes __ Reproved Fat Four Port Tank Brass FPT Initial Release GEDDES C GEDDES 10 MAR 09 Size Drawing Number REV SHEET A d B REV Eco s IMPLBY APVD BY DATE Pa A 001046PDG 01 1 of 1 01 JAN 2014 Page 19 001223MAN 04 Typical Zone Types for Hydronic Applications Floor Zone 1 Floor Zone 1 Valve Floor Zone N Floor Zone N Valve Fan Coil 1 Zone Valve Only if Fan Coil does not have a valve Fa
99. lugs Pete s Plug Gage Adaptor GAGE THE PRESSURE Protective Cover Included 3 VALVE POCKET FOR ADDED PRESSURE PROTECTION 01 JAN 2014 Page The P T plug will allow the installer or homeowner to check water flow through the loop by measuring the pressure difference through the heat exchanger and comparing it to that listed in the Model Specific Information section or the specifications document Optional fittings with P T ports are available for the circulator pump modules sold by Maritime Geothermal Ltd FLUSHING amp PURGING THE GROUND LOOP Once the groundloop has been installed and all connections are completed between the heat pump circulator pump module and ground loop the entire ground loop system should be pressure tested with air to 100 PSIG to make sure there are no leaks on any of the inside fittings Soap all joints and observe that the pressure remains constant for 1 hour When satisfied that all connections are leak free release the air pressure and connect a purge cart See Diagram D to the flushing access ports at the pump module refer to drawing 000906CDG A temporary flushing system can alternately be constructed using a 45 gal barrel and a pump with sufficient volume and head capability to circulate fluid at a velocity of at least 2 ft min through all parts of the loop DIAGRAM Typical Purge Cart Adjust the circulator pump module valves to connect the purge cart to the ground l
100. ly 001223MAN 04 Dirty air filter Inspect Replace Dirty air coil Poor Ductwork Air flow selected on Tap Board is too low Inspect Measure delta T between supply and return ducts at the unit it in heating mode it should not be above 17 Check selection on Air Flow Board Clean The ECM fan will provide proper airflow up to 0 5 inH2o for 1 2HP motors and 0 7 2 for 1HP motors The ductwork is poorly designed or greatly undersized if the fan motor cannot provide the required airflow Select a higher setting Air flow reduction is ena bled Fan Control Signal Har ness is loose AR1 and AR2 are connected with a dry contact Verify that the connector is properly inserted into the fan motor Gently tug on each wire to verify it is properly inserted into the connector Air flow reduction may not be fea sible with poor ductwork and or lower Air Flow selections In crease settings until unit operates properly Repair any loose connections Faulty Control Signal Har ness or faulty motor head Ensure signal is present on terminal strip Fan Control Signal Har ness and or Fan Power Harness is loose Faulty Control Signal Har ness or faulty motor head Ensure signal is present on terminal strip Measure 24VAC between White pin 3 and the following at the fan con trol signal harness insert probes in connector where wire is inserted do not
101. mbalances in the heat distribution can be corrected The total number of supply grills available is based on the heat pump nominal airflow TABLE 10 shows the number of grills available per heat pump size TABLE 10 Heat Pump Size VS Hot Air Grills ons of 2 65 75 Return grills should be mounted the floor At minimum they should be the same size as the supply grill it is highly recommended that they be 25 to 50 larger than the total supply They should be placed opposite the supply grills when possible to ensure distribution across the room For rooms re quiring more than one supply grill it may be possible to use one larger return grill if it can be centrally positioned opposite of the supply grills however it is preferred to have one return for each supply to maximize heat distribution across the room THERMOSTAT LOCATION Most homes are a single zone with one thermostat The ther mostat should be centrally located within the home typically on the main floor It should be placed away from any supply grills and should not be positioned directly above a return grill Most installations have the thermostat located in a hallway or in the inner wall of the living room It should be noted that most homes do not have any supply ducts in the hallway This can lead to a temperature lag at the thermostat if there is very little air movement in the hallway causing the home to be
102. n Domestic COLD IN from well HEAT PUMP CONNECTIONS 1 2 Union DHW OUT 1 2 FPT 1 2 1 2 Ball Check Boiler Valve Valve Drain NOTE Refer to the heat pump labels for connection locations 1 2 COPPER LINES Insulate with 5 8 pipe insulation OPTIONAL must install both DHW IN 1 2 FPT HEAT PUMP CONNECTIONS 1 2 Union 2 LE 1 12 1 2 Boiler Valve Valve Drain 1 2 COPPER LINES Insulate with 5 8 pipe insulation Ball Valve OPTIONAL must install both 125pisg 1 2 PRV Valve DHW OUT 1 2 1 2 FPT MET NOTE Refer to the heat pump labels for connection locations Domestic COLD IN from well DHW IN 1 2 FPT 01 JAN 2014 Chris Geddes 10 MAR 09 ___ ___ Chris Geddes 10 MAR 09 Approved ENG Date Approved By Initial Release GEDDES GEDDES 110 09 SE Eco IMPLBY APVD DATE Valve 125psig _ Pressure Relief Valve Insulated Domestic Hot Water Pre Heat Tank Pressure Relief alve Insulated Domestic Hot Water Pre Heat Tank Drawing Name Page 13 GEOTHERMAL Ball Valve Domestic HOT OUT to house or mixing valve 125psig Pressure Relief Valve 120 140 F 50 60 C Electric or Gas Insulated Domestic
103. n Coil Unit 1 Heating and or Cooling Duct 5 C p Sopp N X duct Fan Coil Unit N Heating and or Cooling Fan Coil 1 Zone Valve Only if Fan Coil does Zone Zone not have a valve Return Supply Header Header Domestic Pre Heat Domestic Pre Heat Domestic Pre Heat Zone Tank Zone Valve Pool Spa Pool Spa Zone Zone Valve Titanium Heat Pool Spa Exchanger Temperature Probe prassi POOL SPA Pool Pump NOTES 1 Floor zones are heating only Cooling a floor zone will cause condensation in the floor Floor zone valves should be wired through a relay that is controlled by the cooling signal O that breaks the signal when in cooling mode to ensure that they cannot accidentally be energized There may be multiple floor zones There may be multiple fan coil units heating and or cooling A zone valve is not required if the unit has a internal valve Domestic Pre Heat Tank is for on demand apllications The tank must have a heat eaxchanger in it or an external one must be used to separate the zone loop from the potable water supply 5 Ensure the floor circulator is adequately sized to accomodate the type and number of zones connected to the system 6 The pool aquastat will operate the Pool Spa Zone Valve gt AIN 170 Plantation Petitcodiac NB E47 6H4 r j Chris Geddes LL Chris Geddes
104. o indicate which size heater was installed INSTALLATION Fan outlet at side of unit The plenum heater should be installed in the supply duct in a manner that allows all of the airflow to pass through it to prevent any hot spots in the heater elements Ensure that the plenum heater is mounted in an approved position as per its instructions Only two control wires are needed to connect the plenum heater to the heat pump terminal strip Refer to the label on the plenum heater or the electrical box diagram on the inside of the electrical box cover of the compressor unit for details on the connections The plenum heater requires its own separate power sup ply TABLE 11 shows the recommended size plenum heater as well as the wire size and breaker size needed to provide power to the plenum heater Refer to the Electrical Tables for electrical connection information TABLE 11 Plenum Heater Sizing Heat Plenum Heater Sizes KW Model Available 7 7 15 865 15 10 20 75 80 5 15 CONDENSATE DRAIN The unit comes equipped with a 3 4 PVC socket fitting female labeled Condensate Drain This drain allows the con densate which forms during the air conditioning cycle to be re moved from the unit The drain should be connected as per local codes During high humidity weather there could be as much as 25 gallons of water formed per day Care should be taken in the spring to ensure that this pipe is not
105. of the plenum heater and 1 of the plenum heater 24VAC is present across pin 1 and pin 3 of the relay 24VAC is present from heat pump terminal strip to plenum heater ground but not from heat pump terminal strip 1 to plenum heater ground Page 44 Correct wiring Replace transformer Replace control board Correct wiring Correct wiring Replace relay 01 JAN 2014 PLENUM HEATER TROUBLE SHOOTING Possible Cause Thermal overload Fan not operating Faut Possible Cause Verification Insufficient hot water Tank Problem Insufficient hot water Heat Pump Problem Water is too hot Verification See Fan Not Operating section Recommended Action Correct problem Reset thermal overload Faulty overload Reset thermal overload Replace if faulty DOMESTIC HOT WATER DHW TROUBLE SHOOTING Thermostat on hot water tank set too low Should be set at 120 F 140 F if required by local code Visually inspect the setting Recommended Action Readjust the setting to 120 F 140 F if required by local code Breaker tripped or fuse blown in electrical supply to hot water tank Reset button tripped on hot water tank Circulator pump not operating Blockage or restriction in the water line or hot water heat exchanger Check both line and load sides of fuses If switch is open determine why Check voltage at elements with multimeter Visu
106. oint and discharge pressure at cycle end Final Settings 51 Setpoint 51 Delta S2 Setpoint S2 Delta A total of three copies are required one for the homeowner one for the installer and on to be sent to Maritime Geothermal Ltd 001223MAN 04 Page 32 01 JAN 2014 General Maintenance GENERAL MAINTENANCE SCHEDULE 6months Inspect for dirt Replace if necessary Inspect for pitted or burned points Replace if necessary Inspect for clogs Remove and clean if necessary Clean as per HEAT EXHCANGER FLUSING PROCEDURE below Generally not required for closed loop systems Whenever system performance is reduced for open loop COAXIAL HEAT EXCHANGER FLUSHING PROCEDURE GROUNDWATER STEP 1 Isolate the heat exchanger by closing the valves in the IN and OUT ports to the heat exchanger Blow out the heat exchanger into a clean 5 gallon bucket using compressed air If a purge cart is not available use a 5 gallon plastic bucket a circulator and some plastic piping to create a makeshift pump system Connect a the inlet and outlet to the heat exchanger ports Place 2 gallons of RYDLYME in the purge cart or bucket Circulate the fluid through the heat exchanger for at least 2 hours 3 recommended Disconnect the purge system dispose of the solution RYDLYME is non toxic and biodegradable and as such can be poured down a drain Connect fresh water and a drain to the heat exchanger ports and flush the exchanger fo
107. om situations which could damage it should the operation of the refrigeration circuit fall outside the allowable operating range A Low Pressure Control The low pressure control monitors the compressor suction pressure and will shut the compressor down if the refrigerant evaporating pressure becomes too low risking the danger of freezing conditions in the evaporator There are 3 main reasons why this control would activate in response to the operating conditions of the unit while operat ing in heating mode 1 Low or no Outdoor loop flow 2 Low Outdoor loop entering liquid temperature 3 Dirty or fouled Outdoor loop heat exchanger B High Pressure Control The high pressure safety control monitors the compressor discharge pressure and will shut the compressor down if the condensing pressure becomes too high There are 3 main reasons why this control would activate in response to the operating conditions of the unit while operat ing in heating mode 1 Low or no airflow 2 High return air temperature 3 Dirty air coil due to poor filter maintenance The unit contains a control board that monitors the safety controls and operates the compressor accordingly Refer to APPENDIX A for control board specifications The low pressure control is connected to LP1 and LP2 The high pressure control is connected to HP1 and HP2 The control board also has provisions for a flow switch The flow switch is unused from the factory an
108. ompressor Replace the liquid line filter drier STEP 3 Vacuum the unit until it remains under 500 microns for several minutes with the vacuum pump valve closed STEP 4 Charge the unit with NEW REFRIGERANT and operate it for continuously for 2 hours Pump down the unit and replace the filter drier Vacuum the unit until it remains under 500 microns for several minutes with the vacuum pump valve closed STEP 5 Charge the unit refrigerant can be re used and operate it for 2 3 days Perform an acid test If it fails pump down the unit and replace the filter drier STEP 6 Charge the unit refrigerant can be re used and operate it for 2 weeks Perform and acid test If it fails pump down the unit and replace the filter drier STEP 7 Charge the unit a final time Unit should now be clean and repeated future burn outs can be avoided 001223MAN 04 Page 46 01 JAN 2014 REFRIGERATION CIRCUIT DIAGRAMS TF MOD PAR REFRIGERATION CIRCUIT AIR HEATING MODE Air lt Condenser a INDOOR OUT e nn A Fan lt lt 000 2 iii ondenser DISTR AIR HANDLER FOR SPLIT SYSTEMS INDOOR IN Open to Suction Line RV 2 NC 1 4 way vavle 4 Sight Low Pressure Glass M Cut out 1 RV Closed Loop DHW 4 way vavle lec m Filter _ Open Loop Drier ervice m Y Pressure UE Cut out mm npa T
109. oop Begin pumping water through the ground loop ensuring that the intake of the pump stays submerged at all times by continuously adding water Water flowing back from the return line should be directed below the water level in the barrel or flush tank to prevent air being mixed with the outgoing water 25 001223MAN 04 Once the lines have been filled and no more air bubbles are appearing in the line the circulator pump module valves to circulate water through the heat pump using the same technique as described above When all air is removed reverse the flow of water through the lines by interchanging the flush cart lines and purge again You will be able to visibly tell when all air is removed ADDING ANTIFREEZE SOLUTION In most mid and northern areas of the US and in all of Canada it is necessary to condition the loop fluid by the addition of some type of antifreeze solution so that it will not freeze during operation in the winter months This antifreeze is required because the loop fluid will normally reach a low entering temperature of 28 F to 32 F 2 C to 0 C and refrigerant temperatures inside the heat pump s heat exchanger may be as low as 20 F 11 C cooler See TABLE 14 for details of freeze protection provided by different concentrations Propylene Glycol 38 30 22 15 BY WEIGHT Protection to 10 F 15 F EE 6 3 12 9 Methanol 16 8 13 6 10 Propylene Glycol 30 23 5 18 3 NOT
110. overload on compressor tripped Ohmmeter shows reading when placed across and terminals and infinity between or S valid resistance reading is present again after the compressor has cooled down Proceed to Operation Trouble shooting to determine the cause of the thermal overload trip Burned out motor open winding Remove wires from compressor Ohmmeter shows infinite resistance between any two terminals Note Be sure compressor overload has had a chance to reset If compressor is hot this may take several hours Replace the compressor Burned out motor shorted windings Remove wires from compressor Resistance between any two termi nals is below the specified value Replace the compressor Motor shorted to ground Seized compressor due to locked or damaged mechanism Start capacitor faulty Single phase only Remove wires from compressor Check for infinite resistance be tween each terminal and ground Compressor attempts to start but trips its internal overload after a few seconds Run capacitor already verified Check with capacitance meter Check for black residue around blowout hole on top of capacitor If any terminal to ground is not infinite replace the compressor Attempt to rock compressor free If normal operation cannot be established replace compressor Replace if faulty Remove black residue in electrical box if any Potential Relay
111. ox drawing on the elec trical box cover for more information THERMOSTAT REQUIREMENTS The TF Series unit requires a three stage heating and two stage cooling thermostat for proper forced air operation The stages are S1 Stage 1 compressor S2 Stage 2 compressor and S3 electric auxiliary heating only One can be pur chased with the unit or other thermostats with the same number of stages can be used The electrical box diagram ELB on the electrical box cover pro vides a description of the signal con nections as does TABLE 1 Description 24VAC Common Ground Fan low speed for air circulation Heat Pump Stage 1 Air 24VAC Fault 24VAC when fault condition Heat Pump Stage 3 Air auxiliary heat Emergency Heat Cooling Mode reversing valve Yo Heat Pump Stage 2 Air Airflow Reduction Airflow Reduction Plenum Heater dry contact Connect AR to AR with a dry contact to reduce the air flow by 15 Refer to the Fan Motor sub section for more information 01 JAN 2014 NOTE Some models are not available in two stage at the pre sent time see Electrical Tables The Y2 signal is not used for these units AQUASTAT REQUIREMENTS The heat pump requires a two stage aquastat for proper hydronic operation The stages are 51 low speed and 52 high speed A two stage aquastat can be purchased with the unit or other system controllers with dry contacts may be used This manual cov
112. pment 2 Install the electrical box cover and the access panel on the heat pump Install the service port caps securely to prevent refrigerant loss Install the electrical cover on the plenum heater if applicable 3 Do a final check for leaks in the ground water ground loop system and ensure the area is clean 4 Turn power on to the unit and the plenum heater if installed Set the thermostat to the final settings Startup Record 1 The installer shall sign and date the Startup Record and have the homeowner sign as well The installer shall leave the Startup Record with the homeowner retain a copy for filing and send a copy to Maritime Geothermal Ltd for warranty registration 01 JAN 2014 Page 29 001223MAN 04 Startup Record Air TF Series Size 25 75 Two Stage R410a Suamup Date Installer _ Installation Site Province Check boxes unless Country asked to record da ta Circle units Homeowner Phone PRE START INSPECTION Ductwork is completed dampers diverters are adjusted Homeowner Registers are open and clear of objects Air filter and cap are installed Condensate Drain is connected properly vented and free of debris Plenum heater is securely fastened if applicable Ground Loop System All shut off valve are open full flow available Loop is full and purged of air Antifreeze type Antifreeze concentration Volume Loop static pressure
113. r several minutes Return the plumbing to its original configuration and open the IN and OUT valves Operate the system and check for improved performance STEP 2 STEP 3 STEP 4 STEP 5 STEP 6 STEP 7 Depending on the plumbing there should be either unions or boiler drains for to access the heat exchanger COAXIAL HEAT EXCHANGER FLUSHING PROCEDURE GROUND LOOP STEP 1 Isolate the heat exchanger by placing the pump module valves in the exchanger flushing position Connect a compressed air and a drain pipe to the pump module purge ports and blow the anti freeze solu tion into a clean 5 gallon bucket Connect a purge cart to the pump module purge ports Place 2 gallons of RYDLYME in the purge cart Circulate the fluid through the heat exchanger for at least 2 hours 3 recommended Disconnect the purge cart and dispose of the solution RYDLYME is non toxic and biodegradable and as such can be poured down a drain Clean the purge cart thoroughly Connect fresh water and a drain to the pump module purge ports and flush the exchanger for several minutes STEP 7 Blow the heat exchanger out with compressed air as per STEP 2 and dump the water down a drain Connect the purge cart to the pump module purge ports Re fill and purge the heat exchanger with as per standard procedures the anti freeze from STEP 2 can be re used Disconnect the purge cart and set the pump module valves back to the original positions STEP 10 Operate the
114. rcuit Hydronic Heating Mode Initial Release 12 JAN 10 Size Drawing Number REV SHEET ECO IMPL BY APVD BY DATE A 001199RCD 04 1 of 1 01 JAN 2014 Page 49 001223MAN 04 000217 D RHEAULT D RHEAULT 101 JAN 14 D RHEAULT 01 JUN 12 GEDDES 01 DEC 10 Model Specific Information This section provides general information particular to each model For complete specifications please see the specifications document for the desired model REFRIGERANT CHARGE CHART SHIPPING INFORMATION STANDARD CAPACITY RATINGS The tables below depict the results of standard capacity rating tests according to C13256 1 which is identical to 15013256 1 Stage 1 values do not apply to single stage units Refer to the Electrical Tables to determine which models are single stage Table 18 Standard Capacity Ratings Ground Loop 60Hz STAGE 1 ELT 41 F 5 C EAT 68 F 20 C STAGE 2 ELT 32 F 0 SS MN LUSG wats Betum kw ww 9 6 0 61 379 Stage 1 1030 486 1 550 23 600 69 4 47 4 06 Stage1 1240 585 2 250 33 500 98 4 37 s m Aa 091 43 7 1540 727 2 615 39 000 114 437 75 16 8 1 06 Stage 1 1660 783 3 600 48 400 14 2 3 94 2017 Stage2 2100 991 4 465 57200 168 3 75 _ 59
115. rculators 21 7 26 8 cite 790 355 __70 Models are single stage Table 26 Heat Pump Electrical Information 1 50 In Outdoor Max Fuse 50 60 80 gt 45 55 65 75 Models are single stage In Outdoor ee ere a 62 7 0 7 0 7 0 Models are single stage N M J r gt TABLE 28 Plenum Heater Electrical Information Electrical 230 1 60 Electrical 208 1 60 Electrical 220 1 50 Size Current Breaker Wire Current Breaker Wire Current Breaker Wire kW A A Size A A Size A Size 7 001223 04 60 01 JAN 2014 AQUASTAT CONNECTION DIAGRAM Modular Parallel TF H Series Aquastat Connection Diagram Mode Description The modular parallel design TF H series geothermal heat pump has three modes of operation as follows air heating air cooling and hydronic heating The air heating and air cooling modes are controlled by the Thermostat while the hydronic heating mode is controlled by the Aquastat Mode Priority The unit comes with a jumper across the PR terminals which sets the priority to air mode To set hydronic mode as priority simply remove the jumper from the PR terminals For two stage models when operating on Stage 1 of the priority mode if a signal is received on Stage 1 of the non priority mode the unit switches to Stage 2 of the priority
116. re Flow WARNING REPEATED RESETS OF A LOW PRES SURE LOCKOUT COULD CAUSE THE HEAT CHANGER TO FREEZE AND RUPTURE DESTROYING THE AND VOIDING THE WARRANTY 01 JAN 2014 Page 11 DOMESTIC HOT WATER CONNECTIONS HACW only The port connections for the DHW circuit are 1 2 brass FPT fittings typical piping diagram for a pre heat tank configuration can be found in drawing 000970PDG at the end of this section Be sure to note the position of the check valve and the direction of water flow Other configurations are possible and there may be multiple units tied together in larger buildings WARNING USE ONLY COPPER LINES CONNECT THE DESUPERHEATER TURES COULD REACH 200F SHOULD THE DHW CUTOUT SWITCH FAIL POTENTIALLY RUPTURING PEX PIPING Ensure the tank is filled with water and under pressure before activating the heat pump Slightly loosen the boiler drain on the DHW Out pipe to allow air to escape from the system before the unit is started This step will make certain that the domestic hot water circulator in the unit is flooded with water when it is started CAUTION the domestic hot water pump is water lu A bricated damage will occur to the pump if it is run dry for even a short period of time Connect the brown wire with the blue insulated terminal to L1 of the compressor contactor Ensure the power is off when connecting the wire The DHW loop may have to be
117. rite ECM Fan Parallel Modular Design N 115 115 5 4 ompressor Indoor Loop Relay NOTE ih 230VAC Connect the brown wire with the 22 insulated terminal to the bottom left p terminal of the compressor contactor 4 1 L1 marked A once lines are filled Run Cap IMPORTANT T and purged The DHW ON OFF 5 2 NOTE ABOUT Compressor 80 140F SWITCH can be used to enable Contactor disable the pump 4 NEUTRAL _1 WIRE Potential Relay L CONNECTION Air Flow Select Neutral is 6 Med Nom Default required if High 6 6 connecting Max 12 5 115VAC external 4 WELL Slow LOOP circulators to the Un 2 Close EBV No Valve heat PHA The u White Black Stripe 1 1 heat pump itself 2 NS 28 1 does not require 3 Su 3 the neutral wire 4 el 5 5 6 ce AIRFLOW REDUCTION r Connect AR1 4 AR together with Low Pres 1 Low Pres 2 dry contacts to reduce the airflow OI 3 for zone applications lt lt i Rela oops 7 eI Required Connections SI es 2 High Pres 100VA 7
118. scharge line Refer to drawing 000907CDG at the end of this section for the recommended setup Placing the water valve in the dis charge line ensures that the heat exchanger inside the heat pump remains full of water when the unit is not running Unions or some other form of disconnect should be used so that the coaxial heat exchanger may be accessed should it required cleaning The heat pump has an electrical connector for the water valve just inside the case After the water valve is installed run the valve harness into the case through the hole provided Remove the jumper plug from the Valve Connector and connect the har ness in its place Ideally there will be water flow available in excess of the requirement of the heat pump In such a situation the proper pump can be selected to maintain a pressure of 30 to 40 psig on the lines when the heat pump is operating However in some cases a well can supply a heat pump only if the minimum requirement for water is used 001223MAN 04 Page 22 Water flow to the heat pump can be controlled very accurately by the installation of a reverse action refrigeration pressure valve in the discharge line of the unit Another more common method of regulating the flow is by the use of a DOLE Valve This valve will automatically control the amount of water flowing through it by varying the diameter of a flexible rubber orifice through which the water passes This minimizes the water usage of the uni
119. ss Model UPS 26 99 or Taco Model 0011 pumps or other brands with similar pumping capability may be used The single pump module will typically handle systems up to 3 tons model size 45 the two pump module will typically handle 4 to 6 ton systems model sizes 55 65 75 This is based on a typical parallel system with one circuit per ton Maritime Geothermal recommends calculating the total pressure drop of the ground loop including headers indoor piping and heat pump exchanger drop based on the antifreeze type and concentration at the desired minimum loop temperature pump module that can deliver the flow required for the unit at the calculated total pressure drop should be selected Refer to the Model Specific Information section for unit flow requirements Loop pressure drops can be calculated using software such as those mentioned in the Horizontal Ground loops section or can be calculated in a spreadsheet using the pipe manufacturer s pressure drop tables for pipe diameter and fittings The circulator pump module must be connected to the heat pump Outdoor Loop ports with a lineset suitable for the flow required with minimum pressure drop 1 rubber or plastic lines should be used The installation of P T plugs pressure temperature pronounced Pete s plugs is recommended on both the entering and leaving lines at the heat pump see Diagram C DIAGRAM C Typical P T Pete s Plug amp Thermometer Stems P
120. stems 3 Check the refrigeration gauges The suction and discharge pressures will depend on the loop temperatures but they should be about 90 110PSIG and 260 360PSIG respectively for a typical start up 4 Monitoring the refrigeration gauges while the unit runs Record the following after 10 minutes of runtime 1 Suction pressure 2 Discharge pressure 3 Duct Return temperature poke a small hole in the flex collar and insert probe in airstream 4 Duct Supply temperature poke a small hole in the flex collar and insert probe in airstream 5 Duct Delta T should be between 22 32 F 12 18 C 6 Outdoor Loop In Supply In temperature 7 Outdoor Loop Out Supply Out temperature 8 Outdoor Delta T should be between 5 8 F 3 4 C 9 Outdoor flow if available 10 Compressor L1 C current black wire place meter between electrical box and compressor 5 Adjust the thermostat setpoint to the desired room temperature and let the unit run through a cycle Record the setpoint suction discharge pressures when the unit shuts off 6 For units with a desuperheater turn the power off to the unit Connect the brown wire with the blue insulated terminal to the compressor contactor as shown in the electrical box diagram Turn the DHW Switch in the unit post on Turn the power to the unit on 7 Remove the electrical cover from the plenum heater Place a current clamp meter around one of the supply wires Turn on the power to the plenum heater
121. t N O N N TF 75 HACW P 1T R410a 60 Hz BTU Hr BTU Hr BTU Hr Watts Waits EER F FE USGPM BTU Hr Watts Watts Watts Watts 43 9 2 100 56 8 23 8 27 790 52 066 79 856 3 092 9 405 231 49 75 168 59 9 10 9 91 790 991 13 8 13 2 8 142 15 255 23 398 6 76 9 4 23 9 1 060 15 5 26 894 44 2 100 57 2 23 4 27 226 51 010 78 236 3 294 21 4 54 80 168 648 10 8 90 860 27 0 6 7 991 14 0 13 0 7 977 14 946 22 923 12 2 26 7 1 060 18 2 0 26 622 80 6 44 1 2 100 57 7 22 9 26 643 49 918 76 562 3 500 5 16 8 69 7 10 7 89 889 2 0 67 991 14 3 12 7 7 806 14 626 22 432 15 0 29 4 1 060 20 9 26 337 85 80 6 44 2 2 100 58 4 22 2 25 896 48 519 74 415 3 639 6 90 16 8 745 10 5 88 217 5 1 2 0 6 8 991 14 7 12 3 7 588 14 216 21 803 17 8 32 2 1 060 23 6 8 25 847 1 4 80 6 44 2 100 58 6 22 0 24 204 48 046 72 250 3 776 7 9 16 8 80 8 10 8 86 521 7 2 CO 2 D O cM LI 9 O1 LI m 8 L 7 2 2 0 6 9 991 15 1 11 9 6 912 13 721 20 633 4 72 23 9 37 8 1 060 29 8 5 9 25 033 80 6 45 2 100 59 7 20 9 22 958 45 574 68
122. t and also prevents exces sively low discharge pressure when in cooling mode Dole valves can be noisy it is recommended that they be installed outside if possible Optionally a water flow meter can be installed in the dis charge line so that the exact amount of water flowing can be determined at a glance It should be placed between the Out door OUT Supply OUT pipe of the heat pump and the water valve With Proper flow there should be 5 7 F 3 4 C delta T be tween the IN and OUT water temperatures of the heat pump when operating in the heating mode All water line valves on both the supply and discharge lines should be either BALL or GATE valves GLOBE valves have a higher pressure drop meaning more pumping power to maintain the required flow to the heat pump PIPE INSULATION All ground water piping to and from the Outdoor Loop ports on the heat pump should be insulated with 3 8 closed cell pipe insulation to prevent condensation and dripping onto floors or walls WATER DISCHARGE METHODS Water disposal methods vary from area to area However some consideration should be made to prevent the cooled discharge water from immediately coming in contact with the supply source Attempting to return the water to the source well will eventually cool the water so much that the heat pump will shut off on its low pressure safety control Acceptable methods for disposing of the waste water are listed below The waste water is
123. t doesn t indicate for auxiliary or emergency when it should Thermostat indicates auxiliary or emergency but no 24VAC signal present across C and the auxiliary and or emergency pin at the ther mostat Correct wiring Set thermostat to engage auxilia ry or emergency heat note some thermostats require a jumper be tween auxiliary and emergency Check the thermostat manual Replace thermostat Replace thermostat Faulty thermostat wiring Plenum Heater transform er is burned out Plenum heater control board is faulty Faulty wiring No 24VAC signal from C to ground at the plenum heater control connector No 24VAC signal from 1 to ground at the plenum heater control connector Faulty wiring No 24VAC signal from 1 to ground at the plenum Faulty Plenum Heater Relay in heat pump heater control connector 001223MAN 04 24VAC signal is present across C and the auxiliary and or emergency pin at the thermostat but no 24VAC signal is present across W2 and C at the heat pump terminal strip Voltmeter does not show 24VAC across transformer secondary winding Transformer tested OK in previous step 24VAC present across C and ground at the plenum heater but not across ground of the plenum heater and of the heat pump terminal strip If previous step tested OK 24VAC is present across ground of the ple num heart and 1 of the heat pump terminal strip but not across ground
124. t to the unit 2 Turn the power on to the heat pump and set all controls including all zone thermostats to OFF 3 Measure the following voltages on the compressor contactor and record them on the startup sheet L1 L2 L2 L3 L1 L3 Heating Mode 1 Set the heating aquastat setpoints to activate Stage 1 and Stage 2 The compressor will start allow 30 60 seconds for the water valve to open for ground water systems as well as the circulator pumps 2 Check the refrigeration gauges The suction and discharge pressures will depend on the loop temperatures but they should be about 90 110PSIG and 260 360PSIG respectively for a typical start up 3 Monitoring the refrigeration gauges while the unit runs Record the following after 10 minutes of runtime 1 Suction pressure 2 Discharge pressure 3 Indoor Loop In Hot In temperature 4 Indoor Loop Out Hot Out temperature 5 Indoor Delta T should be between 8 12 F 4 6 C 6 Outdoor Loop In Supply In temperature 7 Outdoor Loop Out Supply Out temperature 8 Outdoor Delta T should be between 5 8 F 3 4 C 9 Outdoor flow if available 10 Compressor L1 C current black wire place meter between electrical box and compressor 4 Adjust the aquastat setpoint to the desired buffer tank temperature and let the unit run through a cycle Record the setpoint suction and discharge pressures when the unit shuts off 5 Proceed to Final Inspection if the desuperheater if applicable has already
125. ter should be a minimum of 39 F 4 C and should normally 45 F 7 C 2 The well system must be able to supply the required water flow as listed under the Total Flow column in TABLE 13 TABLE 13 Required Flow and Air Tank Sizing Heat Minimum Air Heat Pump Home Total Bladder Pump Flow Flow Flow IGPM IGPM IGPM IGal Size USGPM USGPM USGPM USgal 8 9 6 3 36 11 13 2 22026 85 10 12 0 3 3 6 13 15 6 26 31 65 12 144 3 3 6 15 18 0 30 36 34 41 14 16 8 3 3 6 17 20 4 These are minimum water requirements based on an entering water temperature of 46 F Based on two minute well pump run time Use next size larger tank if there is not a match for the value indicated A larger tank may be used if a longer run time is desired PLUMBING THE HEAT PUMP The port connections for the Outdoor Loop are 1 brass FPT fittings They are marked as OUTDOOR IN and OUT Plumbing lines both supply and discharge must be of adequate size to handle the water flow necessary for the heat pump A 1 copper or plastic line should be run to the Outdoor IN Supply IN pipe of the heat pump Similarly a 1 line should be run from the Outdoor OUT Supply Out pipe to the method of disposal P T plugs should be installed at each port See Diagram A in the Ground Loop section for a description of P T plugs The water valve should be installed in the di
126. the programmed air flow up to the maximum external static value Refer to the APPENDIX B ECM Fan Airflow Tables The air flow can be set to four different levels by changing the position on the Air Flow board located in the electrical box The four levels are indicated in TABLE 6 The actual air flow values can be found in APPENDIX B TABLE 6 Airflow Selections LOW 6 MED Nominal HIGH 6 MAX 12 Units are shipped with the MED position selected for nomi nal air flow The air flow can be further reduced by 15 by making a dry contact across AR and AR on the terminal strip This can be used for applications that have multiple zones or retrofits with undersized ductwork to help reduce air flow noise in the ductwork It is recommended that airflow reduction only be used with the High or Max air flow setting Care should be taken to ensure that the unit does not trip a safety control in heating or cooling mode if the 15 reduction is used in conjunc tion with the MED or LOW air flow setting FAN RETURN ORIENTATION The TF Series heat pump can be ordered as a left or right hand return from the factory This must be specified at time of order as the physical construction of the two configurations is different Refer to the specification documents for more details FAN OUTLET ORIENTATION The TF Series heat pumps have a field configurable fan default location from the factory is in the top of the unit providing a ninety
127. the same temperature If there is a temperature difference then it is plugged Also causes low suction pressure High sub cooling low delta T across air coil Adjust TXV to obtain 8 12 F 3 6 C superheat Adjust the TXV all the way in and out a few times to loosen it Re place TXV if this does not work Replace filter drier Remove 1 2lb of refrigerant at a time and verify that the discharge pressure reduces Faulty reversing valve 2 solenoid coil Verify solenoid by removing it from the shaft while the unit is running There should be a loud whoosh sound when it is removed Replace solenoid if faulty Faulty reversing valve 2 Low or no Outdoor liquid flow A click can be heard when the coil is energized but the unit will not switch to water heating mode Delta T across the Outdoor Loop ports should be between 5 7 F 3 4 or compare pressure drop to the tables for the unit Replace reversing valve Determine the cause of the flow restriction and correct it Verify pumps are working and sized correctly for ground loop systems Verify well pump and water valve is working for ground water sys tems Entering liquid tempera ture too cold Dirty or fouled coaxial heat exchanger typically for ground water unlikely for ground loop Measure the entering liquid temper ature Most likely caused by under sized ground loop Disconnect the water lines and check the
128. through the system during any soldering procedures to prevent soot buildup inside the pipes Maritime Geothermal Ltd recommends re placing the liquid line filter drier anytime the refrigeration system has been exposed to the atmosphere VACUUM AND CHARGING PROCEDURE STEP 1 After completion of repairs and nitrogen pressure testing the refrigeration circuit is ready for vacuuming STEP 2 Release the refrigerant circuit pressure and connect the vacuum pump to the charging manifold Start the vacuum pump and open the charging manifold valves Vacuum until the vacuum gauge remains at less than 500 microns for at least 1 minute with the vacuum pump valve closed STEP 3 Close the charging manifold valves then shut off and disconnect the vacuum pump Place a refrigerant tank with the proper refrigerant on a scale and connect it to the charging manifold Purge the hose to the tank label on the unit or the Refrigerant Charge Chart in the MODEL SPECIFIC INFORMATION section for the STEP 4 Weigh in the appropriate amount of refrigerant through the low pressure suction service port Refer to the proper charge amount STEP 5 the unit will not accept the entire charge the remainder can be added through the low pressure service port after the unit has been restarted REPLACMENT PROCEDURE FOR A COMPRESSOR BURN OUT STEP 1 Pump down the unit as per the Pump Down Procedure above Discard the refrigerant according to local codes STEP 2 Replace the c
129. tion or component of any system that is not supplied by MG regardless of the cause of the failure of such portion or component Products on which the unit identification tags or labels have been removed or defaced Products on which payment to MG or to the owner s seller or installing contractor is in default Products subjected to improper or inadequate installation maintenance repair wiring or voltage conditions Products subjected to accident misuse negligence abuse fire flood lightning unauthorized alteration misapplication contaminated or corrosive liquid or air supply operation at abnormal air or liquid temperatures or flow rates or opening of the refrigerant circuit by unqualified personnel 2 Mold fungus or bacteria damage Corrosion or abrasion of the product 0 Products supplied by others 1 Products which have been operated in a manner contrary to MG s printed instructions 2 Products which have insufficient performance as a result of improper system design or improper application installation or use of MG s products 3 Electricity or fuel or any increases or unrealized savings in same for any reason whatsoever cept for the limited labour allowance coverage set forth above MG is not responsible for The costs of fluids refrigerant or system components supplied by others or associated labour to repair or replace the same which is incurred as a result of a defective part covered by
130. to 100 of the heating design load for maximum long term efficiency with minimal supplementary heat The unit should be in stalled as per CSA 448 2 02 For ground loop applications the ground exchanger should be designed using suitable software with a multi year analysis There are many factors to consider when sizing the heat pump Some of these factors include the number of levels the size of the windows the orientation of the home attached gar age bonus rooms walk in basement coldest outdoor tempera ture etc The heat loss program will take all of these factors into consideration in its calculations An undersized installation will not be as efficient as it will require excessive relatively ex pensive supplemental heat to maintain a comfortable tempera ture in the home and the cost savings of having a geothermal heat pump are greatly reduced Once the total heat loss has been calculated the unit can be sized using the performance tables from the specifications 001223MAN 04 Page document in conjunction with the minimum expected entering liquid temperature of the ground loop well water temperature for ground water system The heat pump output must be able to match the total heat loss at the selected entering water tempera ture in order to provide a comfortable environment with minimal auxiliary heat DUCT SYSTEMS GENERAL Ductwork layout for a heat pump will differ from traditional hot air furnace design in the n
131. trol connections to the thermostat and plenum heater if installed are properly connected and all control signals are off so that the unit will not start up when the power is turned on 5 Ensure all access panels except the lower one that provides access to the electrical box are in place 001223MAN 04 Page 28 01 JAN 2014 UNIT STARTUP AIR The unit is now ready to be started The steps below outline the procedure for starting the unit and verifying proper operation of the unit It is recommended that safety glasses be worn during the following procedures Preparation 1 Remove the caps from the service ports and connect a refrigeration manifold set to the unit 2 Turn the power on to the heat pump and set the thermostat to OFF Set up the thermostat as per the instructions provided with it so that it will function properly with the heat pump system set for heat pump not for heating and cooling The O signal should be set to active in cooling mode 3 Measure the following voltages on the compressor contactor and record them on the startup sheet L1 L2 L2 L3 L1 L3 Air Heating Mode 1 Set the aquastat so that both Stage 1 and Stage 1 are off 2 Set the thermostat to heating mode and adjust the setpoint to activate Stage 1 and Stage 2 The fan should slowly ramp up to speed after the time delay of the thermostat expires if applicable and the compressor will start allow 30 60 seconds for the water valve to open for ground water sy
132. uastat Signal Description UU 7 Table 3 Typical Aquastat Settings 7 Table 4 TF Control System Truth Table Air Priority Page 8 Table 5 TF Control System Truth Table Hydronic Priority Page 8 Table 6 Airflow SClCCUONS En ns Page 10 Table 7 Control Board Fault Codes 11 Table 8 Heat Pump Size vs Heated Area for Ground Loop Systems Page 14 Table 9 Heat Pump Size vs Heated Area for Ground Water Systems Page 14 Table 10 Heat Pump Size vs Hot Air Grills Page 15 Table 11 Plenum Heater Sizing U Page 15 Table 12 DUCE SIZING GUIDES c Page 17 Table 13 Required Flow and Air Tank 00 22 Table 14 Antifreeze Percentages by
133. umber of leads and size of main trunks required Air temperature leaving the heat pump is normally 95 105 F 35 40 much cooler than that of a conventional warm air furnace To compensate for this larger volumes of lower temperature air must be moved and consequently duct sizing must be able to accommodate the greater air flow without creating a high static pressure or high velocity at the floor diffusers A duct system capable of supplying the required air flow is of utmost importance Maritime Geothermal Ltd recommends that the static pressure be kept below 0 2 inches of water total In some instances the number of floor diffusers will actually double when compared to the number that would be used for a hot air oil fired furnace Refer to TABLE 12 at the end of this section Generally allow 100 cfm for each floor grill All leads to the grills should be 6 in diameter 28sq in each The main hot air trunks should be at least 75 of the square surface area of leads being fed at any given point 4 Return air grills should have a minimum of the same total square surface area as the total of the supply grills 5 The square surface area of the return trunks should equal the square surface area of the grills being handled at any given point along the trunk Ohm is VERY IMPORTANT that all turns in both the supply trunks and the return trunks be made with TURNING RADII Air act like a fluid and just like water pr
134. values when compressor is started Reversing valve is the same temper ature on both ends of body com mon suction line is warm compres sor is running hot Verify superheat It should be be tween 8 12 F 3 6 C Superheat will be low if TXV is open too far Adjusting the TXV does not affect the superheat or the suction pres sure Low super heat and discharge pressure Adjust the TXV all the way in and out a few times to loosen it Replace TXV if this does not work Replace solenoid if faulty Replace NO valve Try tapping the valve and switch ing from air heat to water heat a few times Replace the check valve if the problem persists Locate the leak and repair it Spray nine a sniffer and dye are common methods of locating a leak Replace compressor Replace reversing valve Adjust to obtain 8 12 F 3 6 C superheat Adjust the TXV all the way in and out a few times to loosen it Replace TXV if this does not work Leaking check valve Located beside reversing valve 2 3 4 pipe and check valve going into air coil is hot Unit works properly in air heating mode Replace check valve Compressor See Low Suction frosting up Pressure in this section TXV frosting up Random high pressure trip does not occur while on site TXV stuck almost closed or partially blocked by for eign object Faulty compressor contac Intermittent Indoor circula tor Adjustin
135. valve has uniform temper ature common suction line is warm compressor is running hot Reversing valve has uniform temper ature common suction line is warm compressor is running hot Does not work in air heat or water heat but does work in air cool Recommended Action Adjust TXV to obtain 8 12 F 3 6 C superheat Adjust the TXV all the way in and out a few times to loosen it Replace TXV if this does not work Replace reversing valve Replace reversing valve See Low Suction Pressure in this section TXV stuck almost closed or partially blocked by for eign object Faulty compressor contac tor Intermittent fan Adjusting the TXV does not affect the superheat or the suction pres sure Points pitted or burned Contactor sometimes sticks causing the com pressor to run without the fan trip ping the high pressure control See Fan Troubleshooting section Attempt to adjust the all the way out and all the way in a few times to loosen it Replace TXV if this does not work Replace contactor Correct the problem AIR OPERATION TROUBLESHOOTING COOLING MODE Faut Possible Cause Heating instead of cooling High Discharge pressure 001223MAN 04 Thermostat not set up properly Faulty reversing valve 1 solenoid coil Verify that there is 24VAC across O B W1 and C of the terminal strip when calling for cooling Verify solenoid by removing it from the shaft
136. while the unit is running There should be a loud whoosh sound when it is removed Correct thermostat setup Change to a different thermostat Replace solenoid if faulty Faulty reversing valve 1 Low or no Outdoor liquid flow A click can be heard when the coil is energized but the unit continues to heat instead of cool Delta T across the Outdoor Loop ports should be between 8 12F 4 7C or compare pressure drop to the tables for the unit Replace reversing valve Determine the cause of the flow restriction and correct it Verify pumps are working for ground loop systems Verify well pump and water valve is working for ground water systems Entering liquid tempera ture too warm Most likely caused by undersized ground loop Page 38 Verify the ground loop sizing In crease the size of the ground loop if undersized 01 JAN 2014 AIR OPERATION TROUBLESHOOTING COOLING MODE Possible Cause High Discharge pressure continued Dirty or fouled coaxial heat exchanger typically for ground water unlikely for ground loop Unit is overcharged Only possible if unit has been opened in the field and incorrectly charged High Suction Pressure may appear to not be pumping TXV adjusted too far open Verification Disconnect the water lines and check the inside of the pipes for scale deposits High sub cooling low delta T across water coil Verify superheat It
137. y This unit functions this way be cause either the air temperature has dropped significantly in order to reach Stage 3 or the thermostat has been set to Emer gency Mode The fan can operate in recirculation mode G only if there is not a hydronic Stage 1 Y1A signal present regardless of priority selection 001223MAN 04 Thermostat An X in both Stage 2 and Stage 3 indicates that the compressor and plenum heat are active This is emergency heat situation Only the plenum heater is active An X in both Stage 2 and Stage 3 indicates that the compressor and plenum heat are active This is emergency heat situation Only the plenum heater is active 001223MAN 04 Page 8 01 JAN 2014 DIAGRAM TF CONTROL SYSTEM FLOW CHART AIR PRIORITY Thermostat Thermostat Thermostat Aquastat Aquastat STAGE 1 STAGE 2 STAGE 1 STAGE 2 Y2 Y1A Y2A Thermostat Thermostat Thermostat Thermostat Aquastat Aquastat STAGE 1 STAGE 2 STAGE 3 STAGE 1 STAGE 2 Y1A Y2A FAN AIR MODE AIR MODE PLENUM HYDRONIC MODE HYDRONIC MODE RECIRCULATE STAGE 1 STAGE 2 HEATER STAGE 1 STAGE 2 01 JAN 2014 Page 9 001223MAN 04 FAN MOTOR The unit is equipped with a direct drive ECM fan motor for maximum efficiency The motor features a soft start which fur ther improves efficiency by eliminating inrush current and pro vides a smooth quiet ramp up to speed The motor will main tain

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