Installation, Start-Up, and Operating Instructions
Contents
1. black high blue jumper ted low To change the speed of the blower motor BM remove fan motor speed lead from the blower relay BR and replace with the lead for the desired blower motor speed The motor speed lead is attached to terminal BM For low and medium speeds black must be connected to the jumper wire Insulate removed lead end to avoid contact with chassis parts To select high speed on 460 v GE motors separate the black female quick connect QC from the jumper lead male quick connect QC and connect the black lead to the BR Insulate the jumper to avoid contact with any chassis parts COOLING SEQUENCE OF OPERATION With the room thermostat SYSTEM switch in the COOL position and the FAN switch in the AUTO position the cooling sequence of operation is as follows When the room temperature rises to a point that is slightly above the cooling control setting of the thermostat the thermostat completes the circuit between thermostat terminal R to terminals Y and G These completed circuits through the thermostat connect contactor coil C through unit wire Y and blower relay coil TDR through unit wire G across the 24 v secondary of transformer TRAN The normally open contacts of energized contactor C close and complete the circuit through compressor motor COMP to con denser outdoor fan motor OFM Both motors start instantly The set of normally open contacts of energized relay TDR close and c2. HEATING amp COOLING 50GL Single Package Electric Cooling Units with Puron R 410A Refrigerant Visit ww w carrier com Installation Start Up and Operating Instructions Sizes 024 060 NOTE Read the entire instruction manual before starting the installation Index Page SAFETY 8 8 1 RULES FOR SAFE INSTALLATION AND OPERATION 4 GENERAL 4 RECEIVING AND 4 10 Step 1 Check Equipment IDENTIFY UNIT INSPECT SHIPMENT 5 ueteri ertr denti Step 2 Provide Unit Support ROOF SLAB vs GROUND nerit knot aeo occ te Do LO EU Step 3 Field Fabricate 4 Step 4 Provide Clearances w Step 5 Rig and Place INSPECTION etre eive eso Pe INSTALLATION esses Step 6 Connect Condensate Drain Step 7 Install Duct Connections CONFIGURING UNITS FOR DOWNFLOW VERTICAL DISCHARGE endete rote gorii titel a to Step 8 Install Electrical Connections HIGH VOLTAGE CONNECTIONS STANDARD CONNECTION cessere SPECIAL
3. 2026 1958 196 1822 1744 1678 1535 1377 was wo 90 94 eo e 79 7e 750 m meque Air delivery values are based on operating voltage of 230 v or 460 wet coil without filter or electric heater Deduct filter and electric heater pressure drops to obtain static pressure available for ducting NOTES 1 Do not operate the unit at a cooling airflow that is less than 350 cfm for each 12 000 Btuh of rated cooling capacity Evaporator coil frosting may occur at airflows below this point 2 Dashes indicate portions of table that are beyond the blower motor capacity or are not recommended A WARNING The ability to properly perform maintenance on this equip ment requires certain expertise mechanical skills tools and equipment If you do not possess these do not attempt to perform any maintenance on this equipment other than those procedures recommended in the User s Manual FAILURE TO HEED THIS WARNING COULD RESULT IN SERI OUS INJURY OR DEATH AND POSSIBLE DAMAGE TO THIS EQUIPMENT 16 A WARNING Failure to follow these warnings could result in serious injury or death 1 Turn off electrical power to the unit before performing any maintenance or service on the unit Use extreme caution when removing panels and parts As with any mechanical equipment personal injury can result from sharp edges etc
4. below room temperature IMPORTANT Three phase scroll compressor units 50GL030 060 are direction oriented These units must be checked to ensure proper compressor 3 phase power lead orientation If not corrected within 5 min the internal protector will shut off the compressor Any two of the 3 phase power leads to the unit must be reversed to correct rotation When turning backwards scroll compressors emit elevated noise levels and the difference between compressor suction and discharge pressures may be dramatically lower than normal CHECKING AND ADJUSTING REFRIGERANT CHARGE The refrigerant system is fully charged with R 410A refriger ant tested and factory sealed NOTE Adjustment of the refrigerant charge is not required uniess the unit is suspected of not having the proper R 410A charge The charging label and the tables shown refer to system temperatures and pressures CS FIELD MAXIMUM WIPE m SIZE 2 285 m SuPPL 1 POWER To HIE i MAX MUM WIRE SIZE 2 AWG USED WITH ACCESSORY ELECT HEAT OPTION ONLY USED WITH P HEATER OPTIONS W137 BLES 15 KW 0308 036 B SU 20 KW 036 PRIMARY 15 amp 20 KW 042 050 oat MAXIMUM WIRE 3 i T SIZE 2 0 AWG 20 KW SHOWN SEE ELECTRIC 1 i W SCHEMATIC FOR VARETEONS AAA AA A I AAA TRANI Ty d GRN EL SRY EL IP 1 SECONDARY C Wl BRN GEN YEL i WIS GPN Y
5. 1 7 4 10 16 2 27 i i SUCTION LINE TEMPERATURE DEG 1 MM C99080 Fig 19 Cooling Charging Chart 5061 030 Units 096 60 Hz CHARGING CHART OUTDOOR T USING RANT TEMP 042 60 Hz CHARGING CHART i FOR Use WITH UNITS Pajo REFRIGE FOR USE WITH UNITS USING REFRIGERANT i 1241 1802 1241 i i i 1172 170 H um 3 s2 tg mo e 00 4 119 IM 1a 9 1034 150 ae amp T 95 x Q 2 8 2t m le E E 2 g la E 1 y 55 16 2 a la f x Ei 96 z 130 i2 Q ss 5 1a ig 3 27 120 45 1 i ow 3 2 El 19 E 2 758 110 ET n i 300 7 400 E 700 00 0 640 i i i 20 0 500 600 700 609 T SUCTION LINE TEMPERATURE 1 4 SUCTION LINE TEMPERATURE DEG F M 4 7 a 4 10 16 23 27 T Hi pa 27 IM TEMP
6. Defective run start capacitor overload start relay One leg of 3 phase power dead Scroll compressor is rotating in the wrong direc tion Refrigerant overcharge or undercharge Defective compressor Insufficient line voltage Blocked condenser Defective run start capacitor overload or start relay Defective thermostat Faulty condenser fan motor or capacitor Restriction in refrigerant system Dirty air filter Unit undersized for load Thermostat set too low Low refrigerant charge Leaking valves in compressor Air in system Condenser coil dirty or restricted Dirty air filter Dirty condenser coil Refrigerant overcharged Air in system Condenser air restricted or air short cycling Low refrigerant charge Restriction in liquid tube High heat load Refrigerant overcharged Dirty air f ter Low refrigerant charge Metering device or low side restricted insufficient evaporator airflow Temperature too low in conditioned area Outdoor ambient below 40 F Fieid installed filter drier restricted 22 REMEDY Call power company Replace fuse or reset circuit breaker Replace component Determine cause and correct Check wiring diagram and rewire correctly Lower thermostat setting below room tempera ture Check wiring and repair or replace Determine cause Replace compressor Determine cause and replace Replace fuse or reset circuit breaker Determine cause Correct the direction of rotation by reversing
7. NOMINAL CAPACITY fon Poe ae 5 OPERATING WEIGHT Ib 22 1 29 a 36 399 COMPRESSOR Scroll REFRIGERANT R 410A ose w REFRIGERANT METERING DEVICE Accurater Piston Orifice ID in 07 9o o5 00 073 086 CONDENSER COIL 1 17 1 17 2 17 2 17 2 17 2 17 Rows Fins in 10 9 12 7 9 1 12 3 123 16 4 Face Area sq ft 6 CONDENSER FAN Nominat Cfm Ei s Diameter in Motor Hp Rpm 1 8 825 1 4 1100 EVAPORATOR 3 15 3 15 3 15 3 15 4 15 4 15 hows Fina 3 7 3 7 3 7 47 47 Face Area sq ft 4 7 Cioran Renown cea 800 1000 1200 1400 1600 1750 Size in 10x10 10x10 10x10 11x10 11 10 11 10 Motor hp 1 4 1 4 1 2 3 4 3 4 1 HIGH PRESSURE SWITCH psig eine 15 420 25 Reset Auto LOSS OF CHARGE LOW PRESSURE SWITCH Liquid Line psig 20 5 Cutout 45 10 Reset Auto RETURN AIR FILTERS in Throwaway 20 20 1 20 24 1 20 30 1 24 30 1 24 30 1 Required filter sizes shown based on the larger of the ARI Air Conditioning and Refrigeration Institute rated cooling airftow or the heating airflow velocity of 300 ft min for throwaway type or 450 ft min for high capacity type Air filter pressure drop for non standard filters must not exceed 0 08 in wg 1 MIN y TRAP 2 MIN C99013 Fig 10 Condensate Trap IMPORTANT Use flexible connectors between ductwork and unit to prevent transmission of vi
8. Never place anything combustible either or in contact with the unit CAUTION Errors made when reconnecting wires may cause improper and dangerous operation Label all wires prior to disconnec tion when servicing The minimum maintenance requirements for this equipment are as follows 1 Inspect air filter s each month Clean or replace when necessary 2 Inspect indoor coil drain pan and condensate drain each cooling season for cleanliness Clean when necessary 3 Inspect blower motor and wheel for cleanliness and check lubrication each heating and cooling season Clean when necessary 4 Check electrical connections for tightness and controls for proper operation each heating and cooling season Service when necessary AIR FILTER IMPORTANT Never operate the unit without a suitable air filter in the return air duct system Always replace the filter with the same dimensional size and type as originally installed See Tables 1 for recommended filter sizes Inspect air filter s at least once each month and replace throwaway type or clean cleanable type at least twice during each heating and cooling season or whenever the filter s becomes clogged with dust and lint EVAPORATOR BLOWER AND MOTOR NOTE All motors are prelubricated Do not attempt to lubricate these motors For longer life operating economy and continuing efficiency clean accumulated dirt and grease from the blower wheel and motor a
9. SEAL STRIP MUST BE IN PLACE BEFORE PLACING UNIT ON ROOF CURB PLACE RIGGING STRAPS IN BASEPAN SLOT BELOW HANOHOLDS BEFORE RIGGING C99015 Fig 6 Suggested Rigging EZA 71957 ree 205 5207 ME A MAXIMUM ALLOWABLE DIFFERENCE in Fig 7 Unit Leveling Tolerances c Pull strapping through tension buckle unit taut d Snap lever down to lock strap in tension buckle To release strapping squeeze safety latch lift lever and pull webbing outward 5 Tighten the tension buckle until it is taut Lifting brackets must be secure in the handholds 6 Attach field supplied clevis or hook of sufficient strength to hole in the lifting bracket See Fig 9 7 Attach the 2 safety straps directly to the clevis or hook at the 4 rigging brackets DO NOT attach the safety straps to the lifting brackets See Fig 9 HANDHOLD C99067 Fig 8 Belt Threading DETAIL A 0 250 TIGHTEN STRAPPING SECURELY WITH TENSION BUCKLE INSTALL SAFETY STRAPS TO RIGGING CLEVIS AT 4 RIGGING BRACKETS PLACE RIGGING BRACKET ASSEMBLY IN 4 HAND HOLES AND INSTALL TIE DOWN STRAP AROUND PERIMETER OF UNIT AND THROUGH SEE DETAIL A SPACE IN BRACKET ASSEMBLY C99066 Fig 9 Lifting Point 8 Position lifting point directly over the unit s center of gravity 9 Lift unit When unit is directly over the roof curb remove the 2 safety straps Lower the equipment onto the roof curb Step 6 C
10. motor wiring or air filter s If the drain tube is restricted clear it with a plumbers snake or similar probe device Ensure that the auxiliary drain port above the drain tube is also clear CONDENSER FAN 4 CAUTION Keep the condenser fan free from all obstructions to ensure proper cooling operation Never place articles on top of the unit Damage to unit may result 4 Remove 6 screws holding condenser grille and motor to top cover 5 Turn motor grille assembly upside down on top cover to expose the fan blade 6 Inspect the fan blades for cracks or bends 7 If fan needs to be removed loosen the setscrew and slide the fan off the motor shaft 8 When replacing fan blade position blade so that the hub is 1 8 in away from the motor end 1 8 in of motor shaft will be visible 9 Ensure that setscrew engages the flat area on the motor shaft when tightening 10 Replace grille ELECTRICAL CONTROLS AND WIRING Inspect and check the electrical controls and wiring annually Be sure to turn off the electrical power to the unit Remove access panel to locate all the electrical controls and wiring Check all electrical connections for tightness Tighten all screw connections If any smoky or burned connections are noticed disassemble the connection clean all the parts restrip the wire end and reassemble the connection properly and securely After inspecting the electrical controls and wiring replace the
11. 43 DIA K O POWER ENTRY 22 2 10 881 DIA HOLE CONFROL ENTRY 456 2 17 95 342 2 113 67 4 x 22 0 DP OMPRESSOR BLOWER GAS SECTION 45 8 5 amp ELECTRICAL ACCESS PANEL 11 84 112 85 12 4 on 2 851 1226 3 531 9 48 281 192 2 32 721 14 81 LEFT SIDE VIEW FRONT VIEW RIGHT SIDE VIEW Fig 2 50GL024 036 Unit Dimensions CENTER OF GRAVITY UNIT ELECTRICAL CHARACTERISTICS a au IN MM REQUE ee 2 37 02 940 5 16 0 406 4 208 230 1 60 208 230 360 i320 39 02 901 1 195149531 176 447 0 5001036 20871 60 208 230 3 60 260 360 299 1356 35 0218895 19544953 153138741 1651419 OPTIONAL 406 406 5 16011 AIR 16 01 OPENING SUPPLY REFURR DucT OPENING OPENING Y 3 481 13831 TOP VIEN REAR VIEW REQUIRED CLEARANCE FOR OPERATION AND SERVICING REQUIRED CLEARANCE TO COMBUSTIBLE MATL in mm in mm COIL ACCESS 5 2 2222222 36 00 914 0 TOP OF UNIT 14 00 355 6 deti exte Dose taro 36 00 914 0 DUCT SIDE OF UN 2 00 50 8 EXCEPT FOR NEC REQUIREMENTS SIDE OPPOSITE DUCTS 14 00 355 6 UNIT TOP 36 00 914 0 BOTTOM OF UNIT 0 50 12 7 SIDE OPPOSITE DUCTS 36 00 914 0 ELECTRIC HEAT PANE 36 00 914 4 DUCT PANEL Ae 12 00 304
12. 8 NEC REQUIRED CLEARANCES MINIMUM DISTANCES IF UNIT IS PLACED LESS THAN 12 00 304 8 FROM MILLIMETERS IN WALL SYSTEM THEN SYSTEM PERFORMANCE MAYBE COMPROMISE BETWEEN UNITS POWER ENTRY SIDE 42 00 1066 8 UNIT AND UNGROUNDED SURFACES POWER ENTRY SIDE 36 od 914 0 UNIT AND BLOCK OR CONCRETE WALLS AND OTHER GROUNDED SURFACES POWER ENTRY SIDE 42 00 1066 8 1090 6 42 94 SERVICE PORT 8317 28 6 11 131 DIA 0 POWER ENTRY 22 2 0 88 DIA HOLE COWTROL MTRY DRAIN OUTLET a 19 0 10 75 N P T 1t 68 OMPRESSOR BLOWER GAS SECTION 1 84 x 22 0 0 67 DP 329 0 amp ELECTRICAL ACCESS PANEL 12 95 on 124 226 3 142 4 1123 4 1 99 48 28 15 613 044 22 LEFT SIDE VIEW FRONT VIEW RIGHT SIDE VIEW Fig 3 50GL042 060 Unit Dimensions AT UNIT HEIGHT CENTER OF GRAVITY ELECTRICAL CHARACTERISTICS SENE i 5 ER TIT Y OTT 20 2307 90 208230390 460 560 326 148 389819902 19514953 17614475 208730 100 20830560 400 160 399 181 2298 0911 UNIT 16 6 421 6 18 0 457 2 17 6 447 0 The power supply volts phase and hertz must correspond to that specified on unit rating plate The electrical supply provided by the utility must be sufficient to handle load imposed by this unit This installation must conform with local building codes and with NEC National Electrical Code and NFPA 70 NFPA 54 ANSI Z223 1 late
13. Cw 0 e ss 1 was 4e 4 4 4 9 cm e e ev sw WE MINIM ua 680 MELIUS SECURE 75715 574 SEED HEUET CERO AGES Lats Om tee me m 99 uw ws 470 4e 4e s w s Om 1352 157 124 199 no qw oa was sw sor 4 4n 4 Gm 199 i125 1289 ni si man we d ee es ed ee s cm ms 1268 1196 ns 100 959 es 5 54 s sm 5 aa Cm 15 1510 14 5 1396 134 1288 1192 124 1007 T gt CUN UE MA UN CN 540 aa ee ree ps c 2 1894 1 5 cow owes 8 amp 7 sm se se sm 57 4 dC i59 153 1467 1x4 1904 1297 i167 a pow 880 ze eme um ce 555 ies wes 1706 1628 1577 1500 1421 1257 1298 1253 FE HE 728 194 1704 1367 ee me Cm 2190 2158 2081
14. PROCEDURES FOR 208 V OPERATION 10 CONTROL VOLTAGE CONNECTIONS TROUBLESHOOTING eats START UP 15 NOTE TO INSTALLER Before the installation READ THESE INSTRUCTIONS CAREFULLY AND COMPLETELY Also make sure the User s Manual and Replacement Guide are left with the unit after installation SAFETY CONSIDERATIONS Installation and servicing of air conditioning equipment can be hazardous due to system pressure and electrical components Only trained and qualified personnel should install repair or service air conditioning equipment Untrained personnel can perform basic maintenance functions of cleaning coils and filters All other operations should be performed by trained service personnel When working on air conditioning equipment observe precautions in the literature tags and labels attached to the unit and other safety precautions that may apply Follow all safety codes Wear safety glasses and work gloves Use quenching cloth for unbrazing operations Have fire extinguisher available for all brazing operations Consult a qualified installer or c 7 7 SS C99064 Fig 1 Model 50GL service agency for information or assistance The qualified in staller or agency must use only factory authorized kits or acces sories when modifying this product WARNING Before performing service or mainten
15. flats and not on round part of shaft 17 f Reinstall unit access panel 3 Restore electrical power to unit Start unit and check for proper blower rotation and motor speeds during heating and cooling cycles CONDENSER COIL EVAPORATOR COIL AND CONDEN SATE DRAIN PAN Inspect the condenser coil evaporator coil and condensate drain pan at least once each year The coils are easily cleaned when dry therefore inspect and clean the coils either before or after each cooling season Remove all obstructions including weeds and shrubs that interfere with the airflow through the condenser coil Straighten bent fins with a fin comb If coated with dirt or tint clean the coils with a vacuum cleaner using the soft brush attachment Be careful not to bend the fins If coated with oil or grease clean the coils with a mild detergent and water solution Rinse coils with clear water using a garden hose Be careful not to splash water on motors insulation wiring or air filter s For best results spray condenser coil fins from inside to outside the unit On units with an outer and inner condenser coil be sure to clean between the coils Be sure to flush all dirt and debris from the unit base Inspect the drain pan and condensate drain line when inspecting the coils Clean the drain pan and condensate drain by removing all foreign matter from the pan Flush the pan and drain tube with clear water Do not splash water on the insulation
16. 197197 10 4 12 0 19 7 19 7 036 208 230 3 60 187 253 122 77 0 3 6 iiao anas 31 3 36 1 43 6 49 6 E m b 7 4 28 2 28 2 35 35 3 8 5 0 18 1 20 8 28 2 31 2 35 35 208 230 1 60 187 253 7 5 10 0 36 1 41 7 50 3 57 2 60 60 4 1130050 542 625 728 833 80 90 15 0 20 0 72 2 83 3 95 4 109 3 100 110 F J 22 2 22 2 30 30 8 3850 10 4 12 0 222 022 30 30 042 208 230 3 60 187 253 88 0 75100 208 241 312 352 35 40 2 113150 31 3 36 1 442 502 45 60 15 0 20 0 41 6 48 0 7 1 65 1 60 70 15 15 460 3 60 414 39 0 2 0 20 30 35 F J 31 3 31 3 40 40 3 8 5 0 1817208 313 313 40 40 208 230 1 60 187 253 7 5100 361 417 503 572 60 60 1123150 542 625 728 833 80 90 15 0 20 0 72 2 83 3 95 4 109 3 100 110 of fi 24 1 24 1 3 8 5 0 104520 241 7221 208 230 3 60 187 253 147 7510 0 208 241 312 352 11350 31 3 36 1 442 502 15 0 20 0 41 7 48 1 57 1 65 1 60 70 m 4 42 3 42 3 50 50 3 8 5 0 18 1 20 8 422423 50 50 208 230 1 60 187 253 27 6 62 7 5100 36 1 41 7 529 598 60 60 1013 5 542 625 75 4859 80 90 150 200 72 2 83 3 98 0 111 9 z 100 125 4 EA 30 4 30 4 3 8 5 0 104120 30 4 30 4 060 208 230 3 60 187 137 0 62 75100 20 8241 338 378 113445 0 313 361 46 8 52 9 150 200 41 6 48 0 597 677 Heater capacity KW based on heater voltage of 208v 240v amp 480v If power distribution volta
17. ERATURE SUCTION LINE TEMPERATURE DEG C EEEE EUN C99081 C99082 Fig 20 Cooling Charging Chart 5061036 Units Fig 21 Cooling Charging Chart 5061042 Units i ox 4048 60 Hz CHARGING CHART Tomo P 4060 60 Hz CHARGING CHART FOR USE WITH UNITS USING 84104 REFRIGERANT 1 Td FOR USE WITH UNITS USING P4104 REFRIGERANT Pa h iai ri 1 1241 ES 52 1172 1172 52 d 4 2 5 4 5 9 ou 5 io 2 ts 3 18 1 Es iu s pers ox 2 a a ig 8 9 5E 1 LS Ew e 5 NE 4 E 45 7 t i 15 8 5 w i i i ta i i 756 758 i 2 4 fe 900 Ti 00 69 4 i SUCTION LINE TEMPERATURE DEG F SUCTION LINE TEMPERATURE DEG F MSS 7 qoe rur T T ses T quem Y E T T 7 10 16 21 27 7 4 10 16 21 27 SUCTION LINE TEMPERATURE DEG C SUCTION LINE TEMPERATURE DEG n DE NEWER PTS 2 Lais 99084 C99083 Fig 22 Cooling Charging Chart 50GL048 Units 18 Fig 23 Cooling Charging Chart 5001 060 Units cycles or if a suspected malfunction has occurred check each electrical component with the proper electrical instrumentation Refer to the unit wiring label when making these checkouts NOTE Refer to the heating and or cooling sequence o
18. FED TOP 2 AMD OnHECT BLU WIS Fig 16 208 230 3 60 Wiring Diagram 13 F INAL WIPES TCR 1 3 FAN SEQUENCE MOTOE 9 T T 30 G ENERGIZED 2 HIGH FRESSUPE SWITCH NDGOE METOE Fi LE TAs FELA HP AT ISS ARE REPLACED LEGREZ C WIFE OF SURBASES FOR FIELU INSTALLATION WIRE FEUM IFM WEE FROM IFM boi la wWi aw r PED 5 1 S IMUM WIEE SIZE 2 sw 8141 YEL BRN WHT oR YEL caret Lj L 8RN or me 8155 BLK B is SEE ELECTRIC HEAT SCHEMAT PRIMAC 469 2 GRN YEL r Web GRN TEL AA NAR AA RU I OM One CPN TEL GRN EL i 4li BEN TRANI 5 gt 49 sECOMDARY lt 2 NE ub u127 BRN PED OL Wi23 URN wi GEN BLU Jd gt LPS d 1 oS WO BRN ow a ee HRI 5 KW WISS SEN Wlh3 PNK ve 1652 VIO W156 GEA ETT v i dh W70 HR1 28 3 15 726159 BRN 2 10 7 04k C HRI 2 3 4 t20 FW i ACCESSORY ELECTEIC HEA1 7 W 53 BPN C MM N 127 BPN LEGEND UNET PPANGEMENT FAN eee eRe ete
19. FL Wi 2 BRN r W121 RED 4 W123 DEN Wht BRN W16 GRN re Spee BEN W113 YEL W72 WHT W143 PNK i 2 1 ki HRI 28 3 15 Fn t3 W139 VEG W142 HE1 2 32 4 20 Kw 5 J W130 ee ACCESSORY ELELTRIC HEAT COMMON W127 BRN 24V SPLICE BOX L E 5 No FIELD SPLICE C CONTACTOR C IGEME D TERMENAL MARFED WAP ACL TOR ae oer UNIT COMPONENT ARRANGEMENT 7 TERMINAL QUNMAEFED RONE COMPRESSOR MOTOR TOR 21 9 FaN SEQUENCE 0910006 FAN E amp SECTION 0 SPLICE EJ F M gt SPLICE MARKED FU FACTORY WIRING GNO LO CONTEG FING lt P COMPRESSOR INDOOR FAN CONTROL BGs amp PEA E AS v3 SECTION SECTIO 23 23 ub t OF GET HRTF non e ne IFM SINGLE FT TUN w IO CL OMEN iF HTERNAL F EO E CTI POTENTIAL ONL LPS PPESS ELECT MEAT HOT o urn ut SB T nt TH TEAN cT Mote Ay ERE OF bulis FUR CHE Te St nr 1 MIZ Ei ACEC WITH i GB NEC 175 ALENT OPLIVL SEE PAGES F R THERMOTZTAT ANC 24 POKER USE 75 Di SUPPER 1 4 FOR HIG IFM Q Sart 042 050 WIFE 3 AND Fig 15 208 230 1 60 Wiring Diag
20. ON BENT 6 550 5 9 83 121 67 3 831 eves COIL REAR VIEW TOP VIEW REQ D CLEARANCES FOR OPERATION AND SERVICING in mm REQ D CLEARANCES TO COMBUSTIBLE MATL in mm Evaporator coil access 36 914 Ten of Unio ere es ade e DOE 14 355 6 Power entry side except for NEC requirements 36 914 Duct side of unit 22 2 ln 2 50 8 Unito ode S eb E de dns 48 1219 Side opposite 14 355 6 Side opposite 5 36 914 Bottom Of unit 2 4 40 0 50 12 7 12 304 8 Flue panels uv euo a ee 36 914 4 Minimum distances If unit is placed less than 12 in 304 8 mm from wall NEC REQ D CLEARANCES mm system then the system performance may be compromised Between units power entry side units power entry side 42 1066 8 Unit and ungrounded surfaces power entry side 36 914 LEGEND Unit and block or concrete walls and other grounded CG Center of Gravity surfaces control box side 42 1066 8 COND Condenser EVAP Evaporator NEC National Electrical Code REQ D Required Note Dimensions are in in mm 798 5 1193 9 31 441 FIELD ENTRY SERVICE PORTS 23 0 0 911 13 0 0 151 28 6 1
21. S FIELD SPLICE C CONTAC TOR TOR 21 33 SEQUENCE JSEC TION is TERMINAL MARKED CAPACITOR PRA TERMINAL UNMARKED LOMP COMPRESSOR 2 Tee SPLICE EQUIF EOU FPMENT c 2 Ts TRE 7 77 2 SPLICE MARKED END GROLIND EMER GL ZED De EPISCO f WIE LNG HFS HIGH FRESSURE ial TH FIELD CONTROL WIRING HR HEATER PELAT 7 MUT FIRED WIRING IFM NDOnE FAN MUT F AIVESSBRY OF P INFERNAL PRO Fue WIR Itl LPS LOW PRESSURE LET HERI 0 INDICATE COMMON QUIDOGR FAN i F TEHT AL ONLY QUADRUPLE Dat o RP RRR SENT THERMOSTAT Wife Ir TIME DELAY F TH THERMOSTAT 537 TRANS TRANSFORMER SFE bok ATER NOTES tm LIP ANC OF THE ORIGINAL WIFES FURNISHED ART lt E LACED rue ter 1T MUGT BE REPLACED WITH 90 DEGREE 4 FE OF E 11 S EQUIVALENT 4 SEE PRICE PAGES FOR THERMOSTAT AND SUPBASE Tj saw cower ENTRY 3 U3E 75 DEGREE COPPER CONDUCTORS FUR FIELD 55TALLA 10N Sanaa oad 4 FOR HIGH SPEED IFM DISCONNECT PED ofa nas rain WIRE FROM TOF 3 AND CONNECT BLK WIPE FROM IF FOR MEDIUM SP ED DISCONNECT FED WIFE FROM TDR 3 AMD CONNECT BLU WIRE FROM IFM Fig 17 460 3 60 Wiring Diagram 14 IMPORTANT When evaluating the refrigerant charge an indi cated adjustment to the specified factory charge must always b
22. access panel Start the unit and observe at least one complete heating cycle and one complete cooling cycle to ensure proper operation If discrepancies are observed in either or both operating SUCTION LINE PRESSURE KH OPASCALS 1241 1172 5 DRM 9 M 024 60 H2 CHARGING CHART FOA USE WITH UNITS USING 84104 REFRIGERANT SUCTION LINE PRESSURE PSIG 4 10 SUCTION LINE TEMPERATURE DEG C99079 Fig 18 Cooling Charging Chart 50GL024 Units 030 60 Hz CHARGING CHART OUTDOOR FOR USE WITH UNITS USING RAY0A REFRIGERANT ELLA Ilis uvis H ts t E a T 15 1 2 105 EM x LE ig ss 5 P H 7 a lw a 55 iS I z 5 Js 8 io i5 i i i 2 i D 500 50 0 900 SUCTION LINE TEMPERATURE DEG EE meas
23. an operating range between 550 and 625 psi differential pressure The Copeland scroll compressor uses Mobil 3MA POE oil This is the only oil allowed for oil recharge REFRIGERANT SYSTEM REFRIGERANT CAUTION This system uses Puron amp R 410A refrigerant which has higher operating pressures than R 22 and other refrigerants No other refrigerant may be used in this system Gage set hoses and recovery system must be designed to handle Puron If you are unsure consuit the equipment manufacturer Failure to use Puron compatible servicing equipment or replacement components may result in property damage or injury COMPRESSOR OIL The compressor in this system uses a polyolester POE oil Mobil 3MA POE This oil is extremely hygroscopic meaning it absorbs water readily POE oils can absorb 15 times as much water as other oils designed for HCFC and CFC refrigerants Take all necessary precautions to avoid exposure of the oil to the atmosphere SERVICING SYSTEMS ON ROOFS WITH SYNTHETIC MA TERIALS POE polyolester compressor lubricants are known to cause long term damage to some synthetic roofing materials Exposure even if immediately cleaned up may cause embrittle ment leading to cracking to occur in one year or more When performing any service that may risk exposure of compressor oil to the roof take appropriate precautions to protect roofing Proce dures which risk oil leakage include but are not limited to compre
24. ance operations on system tum off power to unit Turn off accessory heater power switch if applicable Electrical shock can cause serious injury or death CAUTION R 410A systems operate at higher pressures than standard R 22 systems Do not use R 22 service equipment or components on Puron R 410A equipment Ensure service equipment is rated for Puron R 410A RULES FOR SAFE INSTALLATION AND OPERATION Recognize safety information This is the safety alert symbol A When you see this symbol in instructions or manuals be alert to the potential for personal injury Understand the signa words DANGER WARNING CAUTION IMPORTANT and NOTE These words are used with the safety alert symbol DANGER identifies the most serious hazards which will result in severe injury or death WARNING signifies a hazard which could result in serious injury or death CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage NOTE and IMPORTANT are used to highlight suggestions which will result in enhanced installation reliability or operation Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Bookj 1 4 PC 101 Catalog No 565 013 1b 1 los Printed in U S A Form 50GL 1SI Pg 1 6 00 Replaces New SUPPLY RETURN DucT DUCT OPENING OPENING COND COIL N
25. arked 200 This retaps transformer to primary voltage of 208 vac Electrical shock could cause serious injury or death ena Stent L o POWER SEE UNIT WIRING LABEL SUPPLY FIELD SUPPLIED GND FUSED DISCONNECT CONTROL BOX YEL THERMOSTAT GRN G LOW VOLTAGE TYPICAL POWER LEADS REDIR p SEE UNIT WIRING LABEL BRN C SPLICE BOX LEGEND Field Control Voltage Wiring Field High Voltage Wiring NOTE Use blue wire for 3 phase units only C99010 Fig 13 High and Control Voltage Connections 10 EXAMPLE Supply voltage is 460 3 60 AB 452 v ONE de BC 464 v AC 455 v 452 464 455 3 Average Voltage 1371 3 457 Determine maximum deviation from average voltage 457 452 5 464 457 7 457 455 2 Maximum deviation is 7 Determine percent of voltage imbalance 7 457 1 53 This amount of phase imbalance is satisfactory as it is below the maximum allowable 2 it Voltage Imbalance 100 x IMPORTANT If the supply voltage phase imbalance is more than 2 contact your local electric utility company immediately CONTROL VOLTAGE CONNECTIONS NOTE Do not use any type of power stealing thermostat Unit control problems may result Use no 18 American Wire Gage AWG color coded insulated 35 C minimum wires to make the control voltage connections between the thermostat and the unit If the thermostat is located more than 100 ft
26. bration Use suitable gaskets to ensure weathertight and airtight seal When electric heat is installed use fire proof canvas or similar heat resistant material connector between ductwork and unit discharge connection If flexible duct is used insert a sheet metal sleeve inside duct Heat resistant duct connector or sheet metal sleeve must extend 24 in from the unit connections flanges into the ductwork Table 2 Minimum Airflow for Safe Electric Heater Operation Cfm SIZE c 59 so 100 120 34x 169 299 CONFIGURING UNITS FOR DOWNFLOW VERTICAL DIS CHARGE A WARNING Before performing service or maintenance operations on the system turn off main power to unit or electrical shock could result 1 Open all electrical disconnects before starting any service work 2 Remove side duct covers to access bottom return and supply knock out covers See Fig 12 3 To remove supply and return duct covers break front and right side connecting tabs with a screwdriver and a hammer Push cover down to break rear and left side tabs 4 If unit ductwork is to be attached to vertical opening flanges on the unit basepan jackstand applications only do so at this time Collect ALL screws that were removed Do not leave screws on rooftop as permanent damage to the roof may occur 5 t is recommended that the basepan insulation around the perimeter of the vertical return air opening be s
27. denser air recirculation To check switch 19 1 Turn off al power to unit 2 Disconnect leads on switch 3 Apply ohmeter leads across switch You should have conti nuity on a good switch COPELAND SCROLL COMPRESSOR PURON REFRIGER ANT The compressor used in this product is specifically designed to operate with Puron R 410A refrigerant and cannot be interchanged The compressor is an electrical as well as mechanical device Exercise extreme caution when working near compressors Power should be shut off if possible for most troubleshooting tech niques Refrigerants present additional safety hazards WARNING Wear safety glasses and gloves when handling refrigerants Keep torches and other ignition sources away from retriger ants and oils Failure to follow this warning can cause a fire serious injury or death The scroll compressor pumps refrigerant throughout the system by the interaction of a stationary and an orbiting scroll The scroll compressor has no dynamic suction or discharge valves and it is more tolerant of stresses caused by debris liquid slugging and flooded starts The compressor is equipped with an anti rotational device and an internal pressure relief port The anti rotational device prevents the scroll from turning backwards and replaces the need for a cycle protector The pressure relief port is a safety device designed to protect against extreme high pressure the relief port has
28. dequately insulate and weatherproof all ductwork located outdoors Insulate ducts passing through unconditioned space and use vapor barrier in accordance with latest issue of Sheet Metal and Air Conditioning Contractors National Association SMACNA and Air Conditioning Contractors of America ACCA minimum installation standards for heating and air conditioning systems Secure all ducts to building structure 13 Flash weatherproof and vibration isolate all openings in building structure in accordance with local codes and good building practices g g 2 at SUPPLY RETURN DUCT DUCT OPENING OPENING C99011 Fig 11 Supply and Return Duct Opening C99012 Fig 12 Vertical Duct Cover Removed Step 8 Install Electrical Connections WARNING The unit cabinet must have an uninterrupted unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur This ground may consist of an electrical wire connected to the unit ground lug in the control compartment or conduit approved for electrical ground when installed in accordance with NEC National Electrical Code ANSI NFPA latest edition in Canada Canadian Electrical Code CSA Canadian Standards Associa tion C22 1 and local electrical codes Failure to adhere to this warning could result in personal injury or death CAUTION Failure to
29. e vices wired into control circuit low voltage They shut off compressor if abnormally high or low pressures are present in the refrigeration circuit These pressure switches are specifically designed to operate with Puron R 410A systems R 22 pressure switches must not be used as replacements for the Puron R 410A air conditioner LOSS OF CHARGE LOW PRESSURE SWITCH AIR CONDI TIONER ONLY This switch is located on the liquid line and protects against low suction pressures caused by such events as loss of charge low airflow across indoor coil dirty filters etc It opens on a pressure drop at about 20 psig If system pressure is above this switch should be closed To check switch 1 Turn off all power to unit 2 Disconnect leads on switch 3 Apply ohmeter leads across switch You should have conti nuity on a good switch NOTE Because these switches are attached to refrigeration system under pressure it is not advisable to remove this device for troubleshooting unless you are reasonably certain that a problem exists If switch must be removed remove and recover all system charge so that pressure gages read 0 psi Never open system without breaking vacuum with dry nitrogen HIGH PRESSURE SWITCH The high pressure switch is lo cated in the discharge line and protects against excessive con denser coil pressure It opens at 610 psig High pressure may be caused by a dirty condenser coil faited fan motor or con
30. e very minimal If a substantial adjustment is indicated an abnormal condition exists somewhere in the cooling system such as insuf ficient airflow across either coil or both coils Refrigerant charge The amount of refrigerant charge is listed on the unit nameplate Refer to the Refrigeration Service Techniques Manual Refriger ants section Unit panels must be in place when unit is operating during charging procedures No charge Use standard evacuating techniques After evacuating system weigh in the specified amount of refrigerant refer to system data plate Low charge cooling Measure outdoor ambient using Cooling Charging Charts Figs 18 23 Vary refrigerant until the conditions of the chart are met Note that charging charts are different from type normally used Charts are based on charging the units to correct superheat for the various operating conditions Accurate pressure gage and tempera ture sensing devices are required Connect the pressure gage to the service port on the suction line Mount the temperature sensing device on the suction line and insulate it so that the outdoor ambient does not effect the reading Indoor air CFM must be within the normal operating range of the unit To use cooling charging charts Take the outdoor ambient temperature and read the suction pressure gage Refer to the chart to determine what the suction temperature should be NOTE If the problem causing the inaccurate reading
31. ecured to the basepan with aluminum tape Applicable local codes may require aluminum tape to prevent exposed fiberglass 6 Cover both horizontal duct openings with the duct covers shipped on the unit from the factory Ensure opening is air and watertight 7 After completing unit conversion perform all safety checks and power up unit NOTE The design and installation of the duct system must be in accordance with the standards of the NFPA for installation of nonresidence type air conditioning and ventilating systems NFPA 90A or residence type NFPA 90B and or local codes and ordinances Adhere to the following criteria when selecting sizing and installing the duct system 8 Select and size ductwork supply air registers and return air grilles according to American Society of Heating Refrigera tion and Air Conditioning Engineers ASHRAE recommen dations 9 Use flexible transition between rigid ductwork and unit to prevent transmission of vibration The transition may be screwed or bolted to duct flanges Use suitable gaskets to ensure weathertight and airtight seal 10 AH units must have field supplied filters or accessory filter rack installed in the return air side of the unit Recommended sizes for filters are shown in Table 1 11 Size all ductwork for maximum required airflow either heating or cooling for unit being installed Avoid abrupt duct size increases or decreases or performance may be affected i2 A
32. f operation in this publication as an aid in determining proper control operation REFRIGERANT CIRCUIT Inspect all refrigerant tubing con nections and the unit base for oil accumulations annually Detect ing oil generally indicates a refrigerant leak WARNING System under pressure Relieve pressure and recover all refrigerant before system repair or final unit disposal to avoid serious injury or death Use all service ports and open all flow control devices including solenoid valves If oil is detected or if low cooling performance is suspected leak test all refrigerant tubing using an electronic leak detector halide torch or liquid soap solution If a refrigerant leak is detected refer to Check for Refrigerant Leaks section If no refrigerant leaks are found and low cooling performance is suspected refer to Checking and Adjusting Refrigerant Charge section EVAPORATOR AIRFLOW The heating and or cooling air flow does not require checking unless improper performance is suspected If a problem exists be sure that all supply and return air grilles are open and free from obstructions and that the air filter is clean When necessary refer to Indoor Airflow and Airflow Adjustments section to check the system airflow METERING DEVICE ACCURATOR PISTON This me tering device is a fixed orifice and is contained in the brass hex body in the liquid line PRESSURE SWITCHES Pressure switches are protective d
33. follow these precautions could result in damage to the unit being installed 1 Make all electrical connections in accordance with NEC ANSI NFPA latest edition and local electrical codes gov erning such wiring In Canada all electrical connections must be in accordance with CSA standard C22 1 Canadian Electrical Code Part 1 and applicable local codes Refer to unit wiring diagram Use only copper conductor for connections between field supplied electrical disconnect switch and unit DO NOT USE ALUMINUM WIRE Be sure that high voltage power to unit is within operating voltage range indicated on unit rating plate Do not damage internal components when drilling through any panel to mount electrical hardware conduit etc On 3 phase units ensure phases are balanced within 2 Consult local power company for correction of improper voltage and or phase imbalance HIGH VOLTAGE CONNECTIONS The unit must have a separate electrical service with a field supplied water proof disconnect switch mounted at or within sight from the unit Refer to the unit rating plate for maximum fuse circuit breaker size and minimum circuit amps ampacity for wire sizing See Table 3 for electrical data The field supplied disconnect switch box may be mounted on the unit over the high voltage inlet hole when the standard power and low voltage entry points are used See Fig 2 and 3 for acceptable location See unit wiring label and Fig 13 f
34. from the unit as measured along the control voltage wires use no 16 AWG color coded insulated 35 C minimum wires STANDARD CONNECTION Remove knockout hole located in the electric heat panel adjacent to the service access panel See Fig 2 and 3 Remove the rubber grommet from the installer s packet included with unit and install grommet in the knockout opening Provide a drip loop before running wire through panel Run the low voltage leads from the thermostat through the inlet hole and into unit low voltage splice box Locate five 18 gage wires leaving control box These low voltage connection leads can be identified by the colors red green yellow brown and white See Fig 10 Ensure the leads are long enough to be routed into the low voltage splice box located below right side of control box Stripped yellow wire is located in connection box Route leads through hole in bottom of control box and make low voltage connections See Fig 13 Secure all cut wires so that they do not interfere with operation of unit TRANSFORMER PROTECTION The transformer is of the energy limiting type It is set to withstand a 30 sec overload or shorted secondary condition PRE START UP WARNING Failure to observe the following warnings could result in serious injury or death 1 Follow recognized safety practices and wear protective goggles when checking or servicing refrigerant system Do not operate compressor
35. ge to unit varies from rated heater voltage heater KW will vary accordingly LEGEND FLA Full Load Amps LRA Locked Rotor Amps C US MCA Minimum Circuit Amps MOCP Maximum Overcurrent Protection RLA Rated Load Amps NOTES 1 In compliance with NEC National Electrical Code requirements for multimotor and combination load equipment refer to NEC Articles 430 and 440 the overcurrent protective device for the unit shall be Power Supply fuse The CGA Canadian Gas Association units may be fuse or circuit breaker 2 Minimum wire size is based on 60 C copper wire If other than 60 C wire is used or if length exceeds wire length in table determine size from NEC 3 Unbalanced 3 Phase Supply Voltage Never operate a motor where a phase imbalance in supply volt age is greater than 2 Use the following formula to determine the percentage of voltage imbalance Voltage imbalance 100x max voltage deviation from average voltage average voltage 4 Connect field L1 to black wire on connection 11 of the compressor contactor 5 Connect field wire L2 to yellow wire on connection 13 of the compressor contactor 6 Connect field wire L3 to Blue wire from compressor SPECIAL PROCEDURES FOR 208 V OPERATION A WARNING Make sure that the power supply to the unit is switched OFF before making any wiring changes With disconnect switch open move yellow wire from transformer 3 16 in terminal marked 230 to terminal m
36. hang must not exceed 48 in Do not place the unit where water ice or snow from an overhang or roof will damage or flood the unit Do not install the unit on carpeting tile or other combustible materials Step 5 Rig and Place Unit Rigging and handling of this equipment can be hazardous for many reasons due to the installation location roofs elevated structures etc Only trained qualified crane operators and ground support staff should handle and instail this equipment When working with this equipment observe precautions in the literature on tags stickers and labels attached to the equipment and any other safety precautions that might apply Follow all applicable safety codes Wear safety shoes and work gloves INSPECTION Prior to initial use and at monthly intervals all rigging brackets and straps should be visually inspected for any damage evidence of wear structural deformation or cracks Particular attention should be paid to excessive wear at hoist hooking points and load support areas Brackets or straps showing any kind of wear in these areas must not be used and should be discarded INSTALLATION 1 Remove unit from shipping carton Leave top shipping skid on the unit as a spreader bar to prevent the rigging straps from damaging the unit If the wood skid is not available use a spreader bar of sufficient length to protect unit from damage 2 Position the lifting bracket assembly around the base of
37. n For cylinders equipped with a dip tube charge Puron units with cylinder in upright position and a commercial metering device in manifold hose Charge refrigerant into suction line AIR CONDITIONER WITH PURON R 410A QUICK REFERENCE GUIDE Puron refrigerant operates at 5096 7096 higher pressures than R 22 Be sure that servicing equipment and replacement components are designed to operate with Puron Puron refrigerant cylinders are rose colored Puron refrigerant cylinders manufactured prior to March 1 1999 have a dip tube that allows liquid to flow out of cylinder in upright position Cylinders manufactured March 1 1999 and later DO NOT have a dip tube and MUST be positioned upside down to allow liquid to flow Recovery cylinder service pressure rating must be 400 psig DOT 4BA400 or DOT BW400 Puron systems should be charged with liquid refrigerant Use a commercial type metering device in the manifold hose Manifold sets should be 750 psig high side and 200 psig low side with 520 psig low side retard Use hoses with 750 psig service pressure rating Leak detectors should be designed to detect HFC refrigerant Puron as with other HFCs is only compatible with POE oils Vacuum pumps will not remove moisture from oil Only use factory specified liquid line filter driers with rated working pressures no less than 600 psig Do not install a suction line filter drier in liquid line POE oils absorb moisture rapidly Do not expose oil t
38. ng cylinder or accurate scale Refer to unit rating plate for required charge START UP COOLING SECTION AND MAKE ADJUST MENTS CAUTION Complete the required procedures given in the Pre Start Up section before starting the unit Do not jumper any safety devices when operating the unit Do not operate the compres sor when the outdoor temperature is below 40 F unless accessory low ambient kit is installed Do not rapid cycle the compressor Allow 5 min between cycles to prevent compressor damage CHECKING COOLING CONTROL OPERATION Start and check the unit for proper cooling control operation as follows l Place room thermostat SYSTEM switch in OFF position Observe that blower motor starts when FAN switch is placed in ON position and shuts down when FAN switch is placed in AUTO position 2 Place SYSTEM switch in COOL position and FAN switch in AUTO position Set cooling control below room temperature Observe that compressor condenser fan and evaporator blower motors start Observe that cooling cycle shuts down when control setting is satisfied The evaporator fan will continue to run for 30 sec 3 When using an auto changeover room thermostat place both SYSTEM and FAN switches in AUTO positions Observe that unit operates in heating mode when temperature control is set to for heating above room temperature and operates in cooling mode when temperature control is set to call for cooling
39. nnually A WARNING Disconnect and tag electrical power to the unit before cleaning the blower motor and wheel Failure to adhere to this waming could cause serious injury or death To clean the blower motor and wheel 1 Remove and disassemble blower assembly as follows a Remove unit access panel b Disconnect motor lead from blower relay BR Disconnect yellow lead from terminal L2 of the contactor c On all units remove blower assembly from unit Remove Screws securing blower to blower partition and slide assembly out Be careful not to tear insulation in blower compartment d Ensure proper reassembly by marking blower wheel and motor in relation to blower housing before disassembly e Loosen setscrew s that secures wheel to motor shaft remove screws that secure motor mount brackets to hous ing and slide motor and motor mount out of housing 2 Remove and clean blower wheel as follows a Ensure proper reassembly by marking wheel orientation b Lift wheel from housing When handling and or cleaning blower wheel be sure not to disturb balance weights clips on blower wheel vanes c Remove caked on dirt from wheel and housing with a brush Remove lint and or dirt accumulations from wheel and housing with vacuum cleaner using soft brush attach ment Remove grease and oil with mild solvent d Reassemble wheel into housing e Reassemble motor into housing Be sure setscrews are tightened on motor shaft
40. o atmosphere POE oils may cause damage to certain plastics and roofing materials Wrap all filter driers and service valves with wet cloth when brazing A Puron liquid line filter drier is required on every unit Do not use an R 22 TXV Never open system to atmosphere while it is under a vacuum When system must be opened for service break vacuum with dry nitrogen and replace filter driers Always replace filter drier after opening system for service Do not vent Puron into the atmosphere Observe all warnings cautions and bold text Do not leave Puron suction line driers in place for more than 72 hrs 21 SYMPTOM Compressor and condenser fan will not start Compressor will not start but condenser fan runs Three phase scroll compressor 50GL030 060 makes excessive noise and there may be a low pressure differential Compressor cycles other than normally sat isfying thermostat Compressor operates continuously Excessive head pressure Head pressure too low Excessive suction pressure Suction pressure too low Table 5 Troubleshooting Cooling Power failure Fuse blown or circuit breaker tripped Defective thermostat contactor transformer con trol relay high pressure or loss of charge swtich insufficient line voltage Incorrect or faulty wiring Thermostat setting too high Faulty wiring or loose connections in compressor circuit Compressor motor bumed out seized or internal overload open
41. oil generally indicates a refrigerant leak Leak test all refrigerant tubing connections using electronic leak detector halide torch or liquid soap solu tion If a refrigerant leak is detected see Check for Refrigerant Leaks section under Start Up c Inspect all field and factory wiring connections Be sure that connections are completed and tight d Inspect coil fins If damaged during shipping and handling carefully straighten fins with a fin comb Verify the following conditions a Make sure that condenser fan blade is correctly di in fan orifice Leading edge of condenser fan blade shoul be 1 2 in maximum from fan orifice See Fig 14 b Make sure that air filter s is in place c Make sure that condensate drain trap is filled with water to ensure proper drainage d Make sure that all tools and miscellaneous loose parts have been removed START UP CHECK FOR REFRIGERANT LEAKS Proceed as follows to locate and repair a refrigerant leak and to charge the unit H MOTOR FAN GRILLE 1 8 MAX BETWEEN MOTOR AND FAN HUB Fig 14 Fan Blade Clearance l Locate leak and make sure that refrigerant system pressure has been relieved and reclaimed from both high and low pressure ports MOTOR SHAFT C99009 2 Repair leak following accepted practices NOTE Replace filter drier whenever the system has been opened for repair 3 Charge unit with R 410A refrigerant using a volumetric chargi
42. omplete the circuit through evaporator blower indoor fan motor IFM NOTE Once the compressor has started and then has stopped it should not be started again until 5 min have elapsed The cooling cycle remains until the room temperature drops to point that is slightly below the cooling control setting of the room thermostat At this point the thermostat breaks the circuit between thermostat terminal R to terminals Y and G These open circuits deenergize contactor coil C and relay coil TDR The condenser and compressor motors stop After a 30 sec delay the blower motor stops The unit is in a standby condition waiting for the next call for cooling from the room thermostat MAINTENANCE To ensure continuing high performance and to minimize the possibility of premature equipment failure periodic maintenance must be performed on this equipment This cooling unit should be inspected at least once each year by a qualified service person To troubleshoot heating or cooling of units refer to tables at the back of the book NOTE TO EQUIPMENT OWNER Consult your local dealer about the availability of a maintenance contract Table 4 Wet Coil Air Delivery Deduct 10 for 208v Horizontal and Downflow Discharge Unit 50GL024 060 230 AND 460 VOLT 2 Extemal Static Pressure wg ue Morsa omr o2 es 06 o os 10 Qo e peque oer po pe ee See
43. onnect Condensate Drain NOTE When installing condensate drain connection be sure to comply with local codes and restrictions Model 50GL disposes of condensate water through a 3 4 in NPT fitting which exits through the base on the evaporator coil access side See Fig 2 and 3 for location Condensate water can be drained directly onto the roof in rooftop installations where permitted or onto a gravel apron in ground level installations Install a field supplied condensate trap at end of condensate connection to ensure proper drainage Make sure that the outlet of the trap is at least 1 in lower than the drainpan condensate connection to prevent the pan from overflowing See Fig 10 When using a gravel apron make sure it slopes away from the unit Connect a drain tube using a minimum of 3 4 in PVC or 3 4 in copper pipe all field supplied at the outlet end of the 2 in trap Do not undersize the tube Pitch the drain tube downward at a slope of at least one in for every 10 ft of horizontal run Be sure to check the drain tube for leaks Prime trap at the beginning of the cooling season start up Step 7 1nstall Duct Connections The unit has duct flanges on the supply and return air openings on the side and bottom of the unit For downshot applications the ductwork can be connected to the roof curb See Fig 2 and 3 for connection sizes and locations Table 1 Physical Data Unit 50GL NT SE Ls 9
44. or provide any electric power to unit unless compressor terminal cover is in place and secured 3 Do not remove compressor terminal cover until all electri cal sources are disconnected 4 Relieve and recover all refrigerant from both high and low pressure sides of system before touching or disturbing anything inside terminal box if refrigerant leak is suspected around compressor terminals 5 Never attempt to repair soldered connection while refrig erant system is under pressure 6 Do not use torch to remove any component System contains oil and refrigerant under pressure To remove a component wear protective goggles and proceed as fol lows a Shut off electrical power to unit b Relieve and reclaim all refrigerant from system using both high and low pressure ports c Cut component connecting tubing with tubing cutter and remove component from unit d Carefully unsweat remaining tubing stubs when neces sary Oil can ignite when exposed to torch flame Proceed as follows to inspect and prepare the unit for initial startup 1 Remove access panel 2 Read and follow instructions on all WARNING CAUTION and INFORMATION labels attached to or shipped with unit 3 Make the following inspections a Inspect for shipping and handling damages such as broken lines loose parts disconnected wires etc b Inspect for oil at refrigerant tubing connections and on unit base Detecting
45. or reference when making high voltage connections Proceed as follows to complete the high voltage connections to the unit Single phase units 1 Run the high voltage Ll L2 and ground leads into the control box 2 Connect ground lead to chassis ground connection 3 Connect L1 to pressure lug connection 11 of the compressor contactor 4 Connect L2 to pressure lug connection 23 of the compressor contactor Three phase units 1 Run the high voltage L1 L2 L3 and ground leads into the control box 2 Connect ground lead to chassis ground connection 3 Locate the black and yellow wires connected to the lines side of the contactor Table 3 Electrical Data VOLTAGE COMPRESSOR ELECTRIC HEAT POWER SUPPLY SIZE V PH HZ Mex RtA FLA FLA WGA 7h9 7 25 25 208 230 1 60 3 8 5 0 18 1 20 8 25 1 28 5 25 30 7 50 0 36 1 41 7 47 6 54 6 50 60 4 21 3 21 3 25 25 208 230 1 60 3 8 5 0 18 1 20 8 25 2 28 7 25 30 36 7 5 10 0 36 1 41 7 47 8 54 7 50 60 14 9 14 9 20 20 E zonzon 107 63 0 2 1 3 8 5 0 10 4 12 0 15 7 17 7 20 20 7 5 10 0 20 8 24 1 28 7 32 7 30 35 02 gt m Ws 23 7 23 7 30 30 3 8 5 0 18 1 20 8 27 1 30 5 30 30 208 230 1 60 36 7500 36 1 41 7 496 566 50 60 2 113150 542 62 5 722826 80 90 7
46. oval Forward claim papers directly to transportation company Manufacturer is not responsible for any damage incurred in transit Check all items against shipping list Immediately notify the nearest Carrier Air Conditioning office if any item is missing To prevent loss or damage leave all parts in original packages until installation Step 2 Provide Unit Support ROOF CURB Install accessory roof curb in accordance with instructions shipped with curb See Fig 4 for roof curb dimen sions Install insulation cant strips roofing and flashing Duct work must be attached to curb IMPORTANT The gasketing of the unit to the roof curb is critical for a watertight seal Install gasketing material supplied with the roof curb Improperly applied gasketing can also result in air leaks and poor unit performance Curb should be level to within 1 4 in See Fig 6 This is necessary for unit drain to function properly Refer to accessory roof curb installation instructions for additional information as required SLAB MOUNT Place the unit on a solid level concrete pad that is a minimum of 4 in thick with 2 in above grade The slab should extend 2 in on sides of the unit Do not secure the unit to the slab except when required by local codes GROUND LEVEL If iocal codes permit the unit can be placed directly on the ground Prepare a level gravel foundation for proper drainage Step 3 Field Fabricate Ductwork Secure all duc
47. r air filter is clean and in place ___ Verify that unit installation is level Check fan wheel and propeller for location in housing and setscrew tightness START UP Supply Voltage 11 12 L2 L3 L3 L1 Compressor Amps L1 L2 L3 Indoor Evaporator Fan Amps TEMPERATURE Outdoor Condenser Air Temperature DB Return Air Temperature DB WB Cooling Supply Air DB WB PRESSURES Refrigerant Suction psig Suction Line Temp Refrigerant Discharge psig Discharge Tempt ___ Verify refrigerant charge using charging tables Verify that 3 phase scroll compressor 50GL030 060 is rotating in correct direction Measured at suction inlet to compressor t Measured at liquid line leaving condenser 23 Copyright 2000 CARRIER Corp 7310 W Morris St Indianapolis IN 46231 509115 Ea E ET 222 222 IEE ITTY Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Book i k PC 101 Catalog No 565 013 Printed in U S A Form 50GL 1SI Pg 24 6 00 Replaces New al a
48. ram 12 AYIMUM WIRE USED WITH ACCESSORY ELECT HEAT OPTION ONLY USED WITH HEATEP 0 5 20 KW MAXIMUM WIFE SIZE 2 9 AWG 20 KW SHOWN 5 SCHEMATIC FOP 208 230 3 30 GRN YEL W26 GEN WH W127 BFN SEE 2 UN ZOMM N J MPONE tT Fi Er ed W11 fel tel LTI MER B 10 BEN WTI WHT 4183 SNK HR HRI amp HR2 5 ki i13 4 Tx BEM 4158 BRN 4 W162 vIO 164 GFA HR3 2 amp oe SEW 7 THR IK e BRN HET 2 9 8 4 29 _ W159 BRN W155 BEN CONTACTOP AFR CAPACITOR SECTION COMPRESSOR SECTION GUTOR COMPRESSUP EDU PMENT FUSE GROUND gt e SFLICE SPLILE FACTOR FIELD oT SP E 2 2 MAREE D d IRIS TONTROL BOx ARES HEATEP BEL m SINGLE FT E GUNEL i Lot FoR ELECT HEAT OTE f LIA Cae Le t THE EM LIME D EQUIP on OHNE CY E FI G WITH ga PER NE J 5 FOR THERMOSTAT E 24v POWER d CONDUC TORS 89 zj 4 5 FM DISCONNECT Feria TDR 3 At CONNECT BLE 506 042 50 i SPEED UT
49. s is a refrigerant leak refer to Check for Refrigerant Leaks section INDOOR AIRFLOW AND AIRFLOW ADJUSTMENTS nw iade For cooling operation the recommended airflow is 350 to 450 cfm for each 12 000 Btuh of rated cooling capacity Table 4 shows cooling airflows at various external static pressures Refer to these tables to determine the airflow for the system being installed NOTE Be sure that all supply and return air grilles are open free from obstructions and adjusted properly A WARNING Disconnect electrical power to the unit before changing blower speed Electrical shock can cause serious injury or death Airflow can be changed by changing the lead connections of the blower motor All SOGL units are factory wired for low speed and may need to be wired for medium or high speed in the field FOR 208 230 V The motor leads are color coded as follows 3 SPEED 2 SPEED black high speed black high speed blue medium speed red low speed To change the speed of the blower motor BM remove the fan motor speed leg lead from the blower relay BR This wire is attached to terminal BM for single phase and 3 phase units To change the speed remove and replace with lead for desired blower motor speed Insulate the removed lead to avoid contact with chassis parts FOR 460 V GE MOTORS The motor leads are color coded as follows 3 SPEED black z high violet jumper orange medium
50. ssor replacement repairing refrigerant leaks replacing refrigerant components such as filter drier pressure switch me tering device coil accumulator or reversing valve SYNTHETIC ROOF PRECAUTIONARY PROCEDURE 1 Cover extended roof working area with an impermeable polyethylene plastic drip cloth or tarp Cover an approximate 10 x 10 ft area 2 Cover area in front of the unit service panel with a terry cloth shop towel to absorb lubricant spills and prevent run offs and protect drop cloth from tears caused by tools or components 3 Place terry cloth shop towel inside unit immediately under component s to be serviced and prevent lubricant run offs through the louvered openings in the base pan 4 Perform required service 5 Remove and dispose of any oil contaminated material per local codes LIQUID LINE FILTER DRIER The filter drier is specifically designed to operate with Puron Use only factory authorized 20 components Filter drier must be replaced whenever the refrigerant system is opened When removing a filter drier use a tubing cutter to cut the drier from the system Do not unsweat a filter drier from the system Heat from unsweating will release moisture and contaminants from drier into system PURON R 410A REFRIGERANT CHARGING Refer to unit information plate and charging chart Some R 410A refrigerant cylinders contain a dip tube to allow liquid refrigerant to flow from cylinder in upright positio
51. st revision and NFGC National Fuel Gas Code Refer to provincial and local plumbing or waste water codes and other applicable local codes Approved for outdoor installation on wood flooring or on class A B or C roof covering materials These instructions cover minimum requirements and conform to existing national standards and safety codes In some instances these instructions exceed certain local codes and ordinances especially those that may not have kept up with changing residen tial construction practices We require these instructions as a minimum for a safe installation GENERAL The SOGL units are fully self contained and de signed for outdoor installation See Fig 1 See Fig 2 and 3 for unit dimensions All unit sizes have discharge openings for both horizontal and downflow configurations and are factory shipped with all duct openings covered Units may be installed either on a rooftop ground level cement slab or directly on the ground if local codes permit See Fig 4 for roof curb dimensions RECEIVING AND INSTALLATION Step 1 Check Equipment IDENTIFY UNIT The unit model number and serial number are stamped on unit identification plate Check this information against shipping papers and job data INSPECT SHIPMENT Inspect for shipping damage while unit is still on shipping pallet If unit appears to be damaged or is torn loose from its anchorage have it examined by transportation inspectors before rem
52. the unit Be sure the strap does not twist 3 Place each of the 4 metal lifting brackets into the handholds in the composite pan 4 Thread lifting bracket strapping around bottom perimeter of unit as follows a Open lever of tension buckle ratchet type b Feed strapping through tension buckle See Fig 8 SUPPORT B SUPPORT A 2 2 END VIEW 99320 SIDE PANEL 0 75 BASE PAN 40 BOTTOM SUPPLY SUPPORT RIB S SEAL STRIP FACTORY SUPPLIED COUNTER FLASHING NAILER FIELD SUPPLIED ROOFING FELT FIELD SUPPLIED CANT STRIP irae FIELD SUPPLIED FIELD SUPPLIED ROOFING MATERIAL FIELD SUPPLIED A99340 D CPRFCURBOO6A00 8 203 11 27 32 301 30 5 8 7781 28 3 4 730 ROOF CPRFCURBO07A00 14 356 11 27 32 301 30 5 8 778 28 3 4 730 m CPRFCURBOO8A00 8 203 15 27 32 402 42 1 8 1070 40 1 4 1022 CPRFCURBOOSAO0 14 356 t5 27 32 402 42 1 8 1070 40 14 1022 NOTES Roof curb must be set up for unit being installed Seal strip must be applied as required to unit being installed Dimensions are in millimeters Roof curb is made of 16 gage steel Table lists only the dimensions per ODS Catalog Ordering Number that have changed Attach ductwork to curb flanges of duct rest on curb Insulated panels 1 thick fiberglass 1 ib density Fig 4 Roof Curb Dimensions 5 C99014 96 42 DUCTS
53. ts to roof curb and building structure on vertical discharge units Do not connect ductwork to unit For horizontal applications unit is provided with flanges on the horizontal openings All ductwork should be secured to the flanges Insulate and weatherproof all external ductwork joints and roof openings with counter flashing and mastic in accordance with applicable codes Ducts passing through an unconditioned space must be insulated and covered with a vapor barrier If a plenum return is used on a vertical unit the return should be ducted through the roof deck to comply with applicable fire codes A minimum clearance is not required around ductwork Cabinet return air static shall not exceed 25 in wg Step 4 Provide Clearances The required minimum operating and service clearances are shown in Fig 2 and 3 Adequate ventilation and condenser air must be provided A CAUTION Do not restrict condenser airflow An air restriction at either the outdoor air inlet or the fan discharge can be detrimental to compressor life The condenser fan draws air through the condenser coil and discharges it through the top fan grill Be sure that the fan discharge does not recirculate to the condenser coil Do not locate the unit in either a comer or under an overhead obstruction The minimum clearance under a partial overhang such as a normal house overhang is 36 in above the unit top The maximum horizontal extension of a partial over
54. two of the 3 phase power leads to the unit Shut down unit to allow pressures to equalize Recover refrigerant evacuate system and re charge to capacities shown on nameplate Replace and determine cause Determine cause and correct Determine cause and correct Determine cause and replace Replace thermostat Replace Locate restriction and remove Replace filter Decrease load or increase unit size Reset thermostat Locate leak repair and recharge Replace compressor Recover refrigerant evacuate system and re charge Clean coil or remove restriction Replace filter Clean coil Recover excess refrigerant Recover refrigerant evacuate system and re charge Determine cause and correct Check for leaks repair and recharge Remove restriction Check for source and eliminate Recover excess refrigerant Replace filter Check for leaks repair and recharge Remove source of restriction Increase air quantity Check filter replace if necessary Reset thermostat Install low ambient kit Replace START UP CHECKLIST REMOVE AND STORE IN JOB FILE I PRELIMINARY INFORMATION Model Noise 5 inh he ede ve arco ern ae egestas epa Serial No II PRE START UP Verify that all packing materials have been removed from unit ___ Verify that condensate connection is installed per installation instructions ___ Check all electrical connections and terminals for tightness Check that indoor evaporato
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