warning - Nordyne
Contents
1.2. DT4BF 024KA MSH4BF 024KA FT4BF 024KA PSH4BF 024KA 43 43 45 45 30 1 2 30 3 4 31 1 4 31 1 4 30 1 2 30 3 4 31 1 4 31 1 4 DTABF 036KA MSH4BF 036KA FT4BF 036KA PSH4BF 036KA 43 43 45 45 30 1 2 30 3 4 31 1 4 31 1 4 30 1 2 30 3 4 31 1 4 31 1 4 DTABF 048KA MSH4BF 048KA FT4BF 048KA PSH4BF 048KA 43 43 45 45 30 1 2 30 3 4 31 1 4 31 1 4 30 1 2 30 3 4 31 1 4 31 1 4 DT4BF 060KA MSH4BF 060KA FT4BF 060KA PSH4BF 060KA 43 43 45 45 30 1 2 30 3 4 31 1 4 31 1 4 30 1 2 30 3 4 31 1 4 31 1 4 Figure 6 Unit Dimensions COOLING CHARGING CHARTS refrigerant when above curve Co D A 5 D 5 Add refrigerant when bel 70 75 80 85 90 95 100 105 110 115 Liquid Temperature F Figure 7 Charging Chart for 2 Ton Units Remove refrigerant when above curv A e HE 4 50 4 Liquid Pressure
3. 104 SHOA 0G zey suiejs s uo 5 JON 2 5 1eddoo asn suonoeuuoo Ajddns 104 2 BuldIAJas 25 L SALON JOJO ue4 pue 1soJjeg duing 15 6 yids for 3 Premium Ultra Premium Models 036KA PSH4BF 036KA iagram FT4BF Figure 16 Wiring D 20 COMFORT ALERT TROUBLESHOOTING Status LED Status LED Description Status LED Troubleshooting Information Module has power Supply voltage is present at module terminals Compressor protector is open Check for high head pressure Check compressor supply voltage Outdoor unit power disconnect is open Compressor circuit breaker or fuse s is open Broken wire or connector is not making contact Low pressure switch open if present in system Compressor contactor has failed open Thermostat demand signal Y is present but compressor is not running TRIP Red LED Low refrigerant charge Evaporator blower is not running Check blower relay coil and contacts Check blower motor capacitor Check blower motor for failure or blockage Check evaporator blower wiring and connectors Check indoor blower control board Check thermostat wiring for open circuit Evaporator coil is frozen
4. 0021112 IN3931 HOSN3S ane BursieAeH SAY YAMS eunsseJd UBIH SdH MOT anv J09 piouejog 959 eseoxuelo HOOD 100 10398002 99 1 OL Movia YOLOW NVJ uooaino 1S0H43G 1S0HJ3G 3ONVHO STONIS Izin 1 ama en HD Nauos HOLIOVdVO way 79 HOLOVINOO HOSSSHd WOO Len uper d 1 MOTHA i nozo syy 2 Bep 501 10 sjojonpuoo 10 417 OGL 4 ep xne sed N pue 10 0 SHOA OSL yey suiajs s uo JON ue sep jueurenbiun 29 3 2 99S Z 556 2 0 2 pz 011290102 9 s10jonpuoo 1eddoo asn Ajddns 10472 5 aed Bunea ees pue
5. 11 Anti Short Cycle Timer 11 Realno Modan ssassn 11 Cooling 11 Optional 2 44 4 00000 11 Component FUNCIONS 11 Component Functions 11 Replacement Parts 11 Unit Dimensions nnne 12 Figure 6 Unit Dimensions 12 Cooling Charging 13 Figure 7 Cooling Chart for 2 Ton Units 13 Figure 8 Cooling Chart for Ton Units 13 Figure 9 Cooling Chart for 4 Ton Units 14 Figure 10 Cooling Chart for 5 Ton Units 14 Heating Charging 15 Figure 11 Heating 15 Wiring Diagrams eer 16 Figure 12 Standard Models 2 Ton 16 Figure 13 Standard Models 3 Ton 17 Figure 14 Standard Models 4 amp 5 18 Figure 15 Premium Ultra Models 2 4 5 Ton 19 Figure 16 Premium Ultra Models 3 Ton 20 Comfort Alert Troubleshooting Charts
6. s10jonpuoo 104 s p ze ojdui3 2 061 yey suiejs s uo a qeiins JON 2 s1ojonpuoo esn suonoeuuoo Ajddns 104 2 jueJnoo 71 1 SALON paeds pue 1soJ4jeg 5 yids abels iagram for 3 Standard Models DT4BF 036KA ET4BF 036KA JT4BF 036KA MSH4BF 036KA ing D Ir igure 13 17 0170 0210114 VZLOLEZ 51 SAY youmg eunsseid UBIH SdH piouejog 959 eseoxuelo HOO 201024000 99 YOLOW MOTT3A ZH 09 5 6 80 HOSN3S HOSN3S ONIHIM 01315 ION3931 Qquvoa 1S0843G 3LIHM NNOH8 ams ovig 3ONVHO JVISOWH3HI OL HOLOVLNOO 2 802 syy jeuondo pue
7. 21 Table 4 LED Diagnostics 21 Table 5 Module Wiring Troubleshooting 23 IMPORTANT SAFETY INFORMATION INSTALLER Please read all instructions before servicing this equipment Pay attention to all safety warnings and any other special notes highlighted in the manual Safety markings are used frequently throughout this manual to designate a degree or level of seriousness and should not be ignored WARNING indicates a potentially hazardous situation that if not avoided could result in personal injury or death CAUTION indicates a potentially hazardous situation that if not avoided may result in minor or moderate injury or property damage A WARNING Shut off all electrical power to the unit before performing any maintenance or service on the system Failure to comply may result in personal injury or death A WARNING Unless noted otherwise in these instructions only factory authorized parts or accessory kits may be used with this product Improper installation service adjustment or maintenance may cause explosion fire electrical shock or other hazardous conditions which may result in personal injury or property damage A WARNING Split System Heat Pumps leave the factory with a nitrogen holding charge Follow all charging instructions for maximum unit performance and efficiency Some local codes require licensed installation service personnel to service t
8. 10 OA 0 snid J9 pueuJre o2euJnj BAS Z Sse 9 eAQp 28A pz 01129 025 79 xne sed 1 N eyejd ees uonoojojd pue 0 901 20 5 s10jonpuoo 104 t sep juawanbiun 2 72 punojB SHOA 081 yey suiejs s ejqeins JON 2 uanaJe sJojonpuoo 1eddoo esn suonoeuuoo jddns 104 2 jueJnoo 5 L 12euuoosiq 71 SALON JOJO pue 1s04jeg uonoes 15 6 1195 INVHSVIG Figure 14 Wiring Diagram for 4 amp 5 Standard Models 4 Models 048KA 060KA DT4BF 048KA ET4BF 048KA JT4BF 048KA MSHABF 5 Ton Models 060KA ET4BF 060KA JT4BF 060KA MSH4BF DT4BF 18 6080 OWA 21 gt 01002 MOT 6 52 4 1H31V suni HOLOV LNOO 8 5214 LHAT quan NR Z 5814 1H3 IV uni juo uan LINDUIO LHYVLS 9 epoo yse
9. Check for low suction pressure Check for excessively low thermostat setting Check evaporator airflow coil blockages or return airfilter Check ductwork or registers for blockage Faulty metering device Check TXV bulb installation size location and contact Check if TXV fixed orifice is stuck closed or defective e Condenser coil is dirty Liquid line restriction filter drier blocked if present in system Thermostat is malfunctioning Solenoid plug not connected Y2 not wired at Comfort Alert Check thermostat sub base or wiring for short circuit Check thermostat installation location level Comfort Alert failure ALERT Long Run Time Compressor Flash Code 1 is running extremely long run Yellow LED cycles High head pressure Check high pressure switch if present in system Check if system is overcharged with refrigerant Check for non condensable in system Discharge or suction Condenser coil poor air circulation dirty blocked damaged Condenser fan is not running Check fan capacitor Check fan wiring and connectors Check fan motor for failure or blockage Return air duct has substantial leakage compressor overloaded If low pressure switch present in system check Flash Code 1 information System Pressure Trip ALERT Flash Code 2 Yellow LED pressure out of limits Table 4 LED Diagnostics 21 COMFORT ALERT TROUBLESH
10. applicable local codes and the instructions provided with the equipment Grounding A WARNING The unit cabinet must have an uninterrupted or unbroken electrical ground to minimize personal injury if an electrical fault should occur Do not use gas piping as an electrical ground This unit must be electrically grounded in accordance with local codes or in the absence of local codes with the National Electrical Code ANSI NFPA 70 or the CSA C22 1 Electrical Code Use the grounding lug provided in the control box for grounding the unit Thermostat Connections Thermostat connections should be made in accordance with the instructions supplied with the thermostat and the indoor equipment The outdoor unit is designed to operate from a 24 VAC Class II control circuit The control circuit wiring must comply with the current provisions of the NEC ANSI NFPA 70 and with applicable local codes having jurisdiction The low voltage wires must be properly connected to the units low voltage terminal block Figure 4 Recommended wire gauge and wire lengths for typical thermostat connections are listed in Table 2 The thermostat should be mounted about 5 feet above the floor on an inside wall DO NOT install the thermostat on an outside wall or any other location where its operation may be adversely affected by radiant heat from fireplaces sunlight or lighting fixtures and convective heat from warm air registers or ele
11. psig Cc e Add refrigerant when below curve m 70 75 80 85 90 95 100 105 110 115 120 125 Liquid Temperature F Figure 8 Charging Chart for 3 Ton Units COOLING CHARGING CHARTS CONTINUED refrigerant when above curve e D D 3 e refrigerant when bel 70 75 80 85 90 95 100 105 110 115 120 Liquid Temperature F Figure 9 Charging Chart for 4 Ton Units 125 Remove refrigerant when above curve A i Liquid Pressure psig C2 N i Add refrigerant when below curve Liquid Temperature F Figure 10 Charging Chart for 5 Ton Units 70 75 80 85 90 95 100 105 110 115 120 125 HEATING CHARGING CHART Remove refrigerant when above curve x 3 e 3 itg Add refrigerant when below curve 50 55 60 65 70 75 80 85 90 Liquid Temperature F Figure 11 Heating Charging Chart WIRING DIAGRAMS 01 0 ASVLIOA
12. ALERT Flash Code 8 displayed incorrectly Verify 24VAC is present across amp when thermostat demand Welded Contactor signal is present If not R and C are reversed wired Verify voltage at contactor coil falls below 0 5VAC when off Review Thermostat Demand Wiring page 10 for amp wiring Table 5 Module Wiring Troubleshooting 23 INSTALLER PLEASE LEAVE THESE INSTALLATION INSTRUCTIONS WITH THE HOMEOWNER We Encourage Professionalism 5 4 3 ASE CERTIFIED 4 Unitary Small HP 210 240 ENERGY STAR Liste o Througl ician ir ien the Certification by NORDYNE COMPLETE COMFORT GENUINE VALUE Specifications amp illustrations subject to change without notice or incurring obligations O Fallon MO Printed in U S A 09 10 088680 708868 Replaces 708868
13. Continuously The continuous indoor blower operation is typically used to circulate the indoor airto equalize a temperature unbalance due to a sun load cooking or fireplace operation Set the thermostat fan mode to ON Figure 1 The indoor blower starts immediately and will run continually until the fan mode is reset to AUTO The continuous indoor blower operation can be obtained with the thermostat system mode set in any position including OFF Shutting the Heat Pump Off Change the thermostat s system mode to OFF and the fan mode to AUTO See Figure 1 NOTE The system will not operate regardless of the temperature selector setting Temperature Selector Figure 1 Digital Thermostat INSTALLER INFORMATION ONLY Important Safety Information Pressures Within the System Labels Tags and Precautions Brazing Heat Pump Installation eere General Information sse Before You Install this Locating the Heat Packaging Gro tid Eevel Connecting Refrigerant Tubing between the Indoor amp Outdoor Electrical Wiring eere
14. P6 connector on the board This 2 stage unit will defrost in second stage regardless of the stage called for by the thermostat NOTE All units are shipped from the factory with the default termination temperature set at 70 F Defrost Test Procedure 1 Terminals R C must have 18 30VAC present between them in order for defrost sequences to be initiated 2 With heat mode thermostat demand Y connected to R short and hold the TEST pins together This will energize reversing valve to initiate a forced defrost NOTE This will bypass the ASCD and allow the high stage compressor to come on immediately if the REMOVE FOR NO DELAY jumper at P6 is removed If the REMOVE FOR NO DELAY jumper at P6 is installed the compressor will energize immediately following a 30 second delay 3 Remove the short on the TEST pins f the Coil temperature is above the Terminate Temperature selection setting the defrost cycle will be terminated reversing valve will de energized f the coil temperature is below the Terminate Temperature election setting the defrost cycle will continue for 14 minutes or until the coil temperature rises above the Terminate Temperature selection setting NOTE Short the TEST pins for 1 second or more to force the control out of defrost and back to heating mode reversing valve de energized Compressor will turn on immediately if the REMOVE FOR NO DELAY jumper is e Ifthe REMOVE FOR NO DELAY jumper
15. be routed directly from the indoor unit or thermostat Ifthe constant 24 VAC wire is not presentin the outdoor unit use one of the spare wires in the thermostat cable to bring power to the module Connect the other end of the spare wire to R at the indoor unit or thermostat Thermostat Demand Wiring The Comfort Alert module requires a thermostat demand signal to operate properly The thermostat demand signal input labeled Y on the module should always be connected to the compressor contactor coil NOTE When the coil is energized the demand signal input is 24 VAC When the coil is not energized the demand signal input should be less than 0 5 VAC NOTES Factory installed modules have different thermostat demand signal wiring Always follow manufacturer wiring instructions when replacing the module After the thermostat demand signal is connected verify that 24 VAC across Y amp C when demand is present Interpreting the Diagnostic LED s When an abnormal system condition occurs the Comfort Alert module displays the appropriate ALERT and or TRIP LED will flash a number of times consecutively pause and then repeat the process To identify a Flash Code number count the number of consecutive flashes Each time the module powers up the last ALERT Flash Code that occurred prior to shut down is displayed for one minute The module will continue to display the LED until the condition returns to normal or if 2
16. develop a coating of snow and ice on the heat transfer coil This is normal and the unit will defrost itself This unit features Adaptive Demand Defrost that monitors ambient and coil temperatures to regulate the defrost function accordingly At the beginning of the defrost cycle both the outdoor condenser fan and compressor will turn off After approximately 30 seconds the compressor will turn on and begin to heat the outdoor coil causing the ice and snow to melt NOTE While the ice and snow is melting some steam may rise from the outdoor unit as the warm coil causes the melting frost to evaporate When defrost is completed the outdoor fan motor will start and the compressor will turn off again In approximately 30 seconds the compressor will start up again and continue normal operation Operating the Heat Pump for Automatic Cooling amp Heating 1 Set the thermostat system switch to AUTO and the thermostat fan switch to AUTO See Figure 1 NOTE Thermostats will vary Some models will not include the AUTO mode and others will have the AUTO in place of the HEAT and COOL and some will include all three 2 Set the thermostat temperature to the desired heating and cooling temperature level s The outdoor unit and the indoor blower will then cycle on and off in either the heating or cooling mode of operation as required to automatically maintain the indoor temperature within the desired limits Operating the Indoor Blower
17. is installed the compressor will energize immediately following a 30 second delay NOTE If the Y2 thermostat input is energized 2 stage system the second stage will turn on If the above steps will not initiate a defrost replace the defrost board Anti Short Cycle Timer Test The 3 minute time delay feature can be bypassed by shorting the TEST pins together Heating Mode When the TEST pins are shorted together for more than 1 second the control will switch between defrost mode and heating mode as described in the Defrost Test Procedure section Cooling Mode When the TEST pins are shorted together for more than 1 second the Anti Short Cycle Timer will be bypassed Optional Equipment A functional checkout should be performed in accordance with the checkout procedures supplied with the equipment COMPONENT FUNCTIONS Comfort Alert Diagnostics The Comfort Alert diagnostics module troubleshoots heat pump and air conditioning system failures and accurately detects the cause of electrical and system related failures without any sensors A flashing LED indicator communicates the ALERT code to quickly direct the technician to the root cause of a problem Low Pressure Switch A low pressure switch is factory installed and located internally on the suction line of the outdoor unit The switch is designed to protect the compressor from a loss of charge by interrupting the thermostat inputs to the unit If the suction
18. location for mounting the outdoor unit See Figure 6 page 12 for unit dimensions Overhead obstructions poorly ventilated areas and areas subject to accumulation of debris should be avoided Sufficient clearance for unobstructed airflow through the outdoor coil must be maintained in order to achieve rated performance See Figure 2 for minimum clearances to obstructions e Consideration should be given to availability of electric power service access noise and shade Packaging Removal To prevent damage to the tubing connections carefully remove the carton and user s manual from the equipment Discard the shipping carton Ground Level Ground level installations must be located according to local building codes or ordinances and these requirements Clearances must be in accordance with those shown in Figure 2 A suitable mounting pad Figure 3 must be provided and separate from the building foundation The pad must be level and strong enough to support the weight of the unit The slab height must be a minimum of 2 5 cm above grade and with adequate drainage DO NOT OBSTRUCT TOP OF UNIT 18 18 Figure 3 Ground Level Installation Connecting Refrigerant Tubing Between the Indoor amp Outdoor Unit A CAUTION This system uses R 410A refrigerant with POE oil When servicing cover or seal openings to minimize the exposure of the refrigerant system to air
19. pressure falls below 5 psig the switch will open and the outdoor unit The switch will close again whenthe suction pressure increases above 20 psig NOTE When the switch opens and then closes there is a 3 minute short cycling delay before the outdoor unit will energize Under normal conditions the switch is closed High Pressure Switch A high pressure switch is factory installed and located internally on the compressor discharge line of the outdoor unit If the discharge pressure rises above 650 psig the switch will open and de energize the outdoor unit The switch will close again after the discharge pressure decreases to 460 psig NOTE When the switch opens and then closes there will be a 3 minute short cycling delay before the outdoor unit will energize Under normal conditions the switch is closed REPLACEMENT PARTS Replacement parts are available through all Nordyne distributors Please have the complete model and serial number of the unit when ordering replacement parts Electrical Capacitors Temperature Limit Switches Compressors Thermostats Contactors Time Delay Relays Pressure Switches Transformers Relays Motors Blower Motor Fan Motor Components Blower Assembly Cabinet Panels Expansion Valves Fan Grille Filter Driers UNIT DIMENSIONS DO NOT OBSTRUCT TOP OF UNIT Allow adequate clearance for airflow
20. require a relay Optional Equipment Optional equipment requiring connection to the power or control circuits must be wired in strict accordance with current provisions of the NEC ANSI NFPA 70 with applicable local codes having jurisdiction and the installation instructions provided with the equipment Optional Equipment low ambient control hard start kits etc should be installed in strict accordance with the manufacturers installation instructions Transformer Upgrade Kit If this 2 stage heat pump is installed in conjunction with a gas furnace and fossil fuel kit the furnace transformer MUST be upgraded to one with a 60 VA rating or using the transformer upgrade kit 904077 To upgrade the transformer Remove the existing transformer and install the new 60 VA transformer Remove the 3 amp fuse on the furnace control board and install the 5 amp fuse provided NOTE The new transformer be larger than the existing transformer that is mounted in the furnace If this happens mount the 60 VA transformer using one of the mounting holes in the furnace panel On the other side either drill a 0 149 hole in the panel and use the existing fastener or use a Self drilling fastener to secure the other side of the transformer START UP amp ADJUSTMENTS Pre Start Check List X Verify the indoor unit is level and allows proper condensate drainage Verify the outdoor coil and top of the unit are free from obstru
21. service provided by the utility is sufficient to handle the additional load imposed by this equipment Refer to the unit wiring label for proper voltage wiring X Verify factory wiring is in accordance with the unit wiring diagram or Figures 12 16 pages 16 20 Check for loose connections Line Voltage A wiring diagram is located on the inside cover of the electrical box of the outdoor unit The installer should become familiar with the wiring diagram before making any electrical connections to the outdoor unit An electrical disconnect must be located within sight of and readily accessible to the unit This switch shall be capable of electrically de energizing the outdoor unit Line voltage to the unit should be supplied from dedicated branch circuit containing the correct fuse or circuit breaker for the unit Incoming field wiring and minimum size of electrical conductors and circuit protection must be in compliance with information listed on the outdoor unit data label Any other wiring methods must be acceptable to authority having jurisdiction The outdoor unit requires both power and control circuit electrical connections Refer to the wiring diagram schematic for identification and location of outdoor unit field wiring interfaces or see Figures 12 16 pages 16 20 Make all electrical connections in accordance with all applicable codes and ordinances e Overcurrent protection must be provided at the
22. should be functionally checked to verify system operation and compatibility with the heat pump Refer to the installation instructions for this equipment and perform a functional checkout in accordance with the manufacturer s instructions Adjustment of Refrigerant Charge N CAUTION Split system equipment contains liquid and gaseous refrigerant under pressure Adjustment of refrigerant charge should only be attempted by qualified trained personnel thoroughly familiar with the equipment Under no circumstances should the homeowner attemptto install and or servicethis equipment Failure to comply with this warning could result inequipment damage personal injury or death NOTES The unit must be charged while both first and second stages are operating Toachieve rated capacity and efficiency the compressor must be exposed to refrigerant for at least 24 hours prior to running and then must be run for a minimum of 12 hours The Refrigerant Charging Charts Figures 7 11 pages 13 15 are applicable to listed assemblies of equipment and at listed airflows for the indoor coil Assemblies of indoor coils and outdoor units not listed are not recommended To properly charge these units 1 Read all Installation Instructions first 2 Complete any brazing operations e g Split system line sets 3 Leak check and evacuate the whole system using proper methods 4 Purge the nitrogen holding charge 5 Evacuate the uni
23. 10476 Jle 12euuoosiQ 1 SALON ZH 09 0 2 804 1010 N UK 254 pue 15 uonoes 100pino H 15 yids 1 INVH9VIG iagram for 2 Ton Standard Models DT4BF 024KA ET4BF 024KA JT4BF 024KA MSH4BF 024KA D iring igure 12 16 6021 YOLOW NV HOSSdHdWOO JONVHO ZH 09 eseud 062 802 TWNIWH3L ONIYIM ae HOSN3S anv WOO Movia 7 UOSN3S 1S0uJ3d 700 ad bad Ip E T EN 4 109 H ama wOTBA JVLSOWH3HL OL a t O Mov18 HOLOVLNOO 802 i Su jeuondo pue 10 8 eJ 051 snid Bag Z ssejo eAQp 9e pz JOBUUOD 9 suone jejsui xne sed juajAuoo N eyejd 295 pue 404 1AIND sunajonpuoo2 2 GOL 10
24. 4 VAC power is removed from the module See Table 4 page 21 for flash code identification or Table 5 page 23 for module wiring troubleshooting LED Description POWER LED Green indicates voltage is present at the power connection of the module ALERT LED Yellow communicates an abnormal system condition through a unique flash code NOTE The ALERT LED will flash consecutively pause and then repeat the process The number of consecutive flashes referred to as the Flash Code correlates to a particular abnormal condition Detailed descriptions of these ALERT Flash Codes are listed in Table 4 TRIP LED indicates a demand signal is received from the thermostat but current to the compressor is not detected by the module The TRIP LED typically indicates if the compressor protector is open or the compressor has no power The scroll compressors R run C common and S start wires are routed through the holes in the Comfort Alert module marked R C and S NOTE The common wire does not need to be routed through the module for it to operate Outdoor Fan Motor If the unit utilizes a 2 speed condenser fan motor this motor will operate on low speed when in low cooling and on high speed when in high cooling A relay within the control area switches the fan motor from low to high speed using the call for high cooling as the trigger Other models that utilize BLDC fixed torque variable speed fan motors will not
25. 8KA 4 Ton Models Figure 15 Wiring Diagram for 2 4 amp 5 Ton Premium Ultra Premium Models FT4BF 024KA PSHABF 024KA 2 Ton Models 060KA PSHABF 060KA 6080 0196014 Aejay Aejay 100pino H4O eAjeA SAY eunsseJd YBIH SdH YOUMS eJnssaJg piouejog JosseJdui02 959 JojeoH eseoxueJl HOOD 00 101963002 90 YOLOW YOOdLNO AV T3H OWA 21 gt 39V E10A 6 9p05 user LUA TV MOJA suni skeme 1055970300 HOLOVINOO 8 USEI TV MONA WEIS ur Ajuo NANY Nado Z 2000 45814 16971 MOIRA uni ur Ajuo jueuno LINDHID 18VLS N3do 9 user LUA TV MOJA S P09 1H3 TV OlI9A YOLOY 0351201 USeIJ LH JTY OII9A Ayeug Ajuo s 5 1LHOHS 9p02 user 13 1V MONA 10sseJduioo 10 jo einssejd uogons 10 dIULIYNSSAYd WALSAS use J 1 ejofo unu Ajeuienxe si 10 JWILNNY 9002 used 1447 MOII9A jou si 10sse1duioo ay jnq juese d si YL Jemod 4H3MOd 9910 uonduoseg 437 SNIS 1 1 sme
26. HONOYHL SIHL 31n0H 5 147V 1 5 S IHL Na 31n0H MOTTA ZH 09 ajbuls 0 2 80 YOLOVLNOOD 1H31V 1HOJINOO NI 9NIN3dO H IHL 1 JOJO W33 pue 1s04jeg uonoes 100pino 1293H 5 yds 1H3 V 1HOJINOO JVISOWH3HI OL LJW 1HOJWOO e OGL snid ap suonejjejsur xne sed N ue sap jueuienbiun z ojdw3 2 jueJnoo 5 HOLON AOEc 80c syy jeuondo pue 043UO9 10 5 19 pueuJre o2euJnj 39S Z sse o eAQp 2e tz JOBUUOD 79 ejejd ees uonoejoJd 1 pue 104 2 SOL 10 5 s1ojonpuoo 1047 091 ey suiejs s JON 2 s1039npuoo 1eddoo esn Ajddns 104 2 je 129 251 0 71 58 0 INVH9VIG S9NISIA 048 PSHABF 04
27. OOTING CONTINUED Status LED Status LED Description Status LED Troubleshooting Information ALERT Thermostat demand signal is intermittent Flash Code 3 Short Cycling Low line voltage contact utility if voltage at disconnect is low Yellow LED is running only briefly Excessive liquid refrigerant in compressor Compressor bearings are seized Run capacitor has failed Low line voltage contact utitlity if voltage at disconnect is low Check wiring connections Excessive liquid refrigerant in compressor Compressor bearings are seized Measure compressor oil level ALERT Flash Code 4 Locked Rotor Yellow LED Outdoor unit power disconnect is open Compressor circuit breaker fuse s is open Compressor contactor has failed open Check compressor contactor wiring and connectors Check for compressor contactor failure burned pitted or open ALERT Check wiring and connectors between supply and compressor Flash Code 5 Open Circuit Check for low pilot voltage at compressor contactor coil Yellow LED High pressure switch is open and requires manual reset Open circuit in compressor supply wiring or connections Unusually long compressor protector reset time due to extreme ambient temperature Compressor windings are damaged Check compressor motor winding resistance Run capacitor has failed Open circuit in compressor
28. OUTDOOR SPLIT SYSTEM HEAT PUMP USER S INFORMATION INSTALLATION INSTRUCTIONS TWO STAGE R 410A 16 SEER MODELS ABOUT THE HEAT PUMP Your heat pump is a unique all weather comfort control appliance that will heat and cool your home year round and provide energy saving comfort It s an unknown fact that heat is always in the air even when the outside temperature is below freezing The heat pump uses this basic law of physics to provide energy saving heat during the winter months For example If the outdoor temperature is 47 F 8 C your heat pump can deliver approximately 3 5 units of heat energy per each unit of electrical energy used as compared to a maximum of only 1 unit of heat energy produced with conventional heating systems In colder temperatures the heat pump performs like an air conditioner run in reverse Available heat energy outside the home is absorbed by the refrigerant and exhausted inside the home This efficient process means you only pay for moving the heat from the outdoors to the indoor area You do not pay to generate the heat as with more traditional furnace designs During summer the heat pump reverses the flow of the heat absorbing refrigerant to become an energy efficient central air conditioner Excess heat energy inside the home is absorbed by the refrigerant and exhausted outside the home HEAT PUMP MAINTENANCE N CAUTION Shut off all electrical power to the unit before performing any mai
29. Pre Electrical Voltage Fo f ETE Thermostat Outdoor Unit Control Circuit Wiring s ucc Comfort Alert Diagnostics Module 24VAC Power 2 2 Thermostat Demand Wiring Interpreting the Diagnostic LED s LED DeSCFIDEHORI icc inner Outdoor Fan MOto asasena eri Optional Equipment Transformer Upgrade Startup 4 Adjustments esses Pre Start Checklist iiine Startup Procedures Air Circulation Indoor Blower System System Adjustment of Refrigerant 9 Charging an R 410A System in AC Mode at Outdoor Temperatures above 55 10 Charging an R 410A Unit in Heat Mode 10 Short Cycle Protection 10 Defrost Cycle 10 Defrost Test
30. branch circuit distribution panel and sized as shown on the unit rating label and according to applicable local codes See the unit rating plate for minimum circuit ampacity and maximum overcurrent protection limits Provide power supply for the unit in accordance with the unit wiring diagram and the unit rating plate Connect the line voltage leads to the terminals on the contactor inside the control compartment e Use only copper wire for the line voltage power supply to this unit as listed in Table 1 page 6 Use proper code agency listed conduit and a conduit connector for connecting the supply wires to the unit Use of rain tight conduit is recommended 208 230 Volt units are shipped from the factory wired for 230 volt operation For 208V operation remove the lead from the transformer terminal marked 240V and connect it to the terminal marked 208V Thermostat NOTE Jumper RW2C E 2 Wiw3 W1 amp W2 together OC gt for shorter staging time N NS CO a 5 CD CD Air Handler Heat Pump OD Section Figure 4 Typical 2 Stage Heat Pump w Optional Outdoor Thermostat and Variable Speed Air Handler e Optional equipment requiring connection to the power or control circuits must be wired in strict accordance of the NEC ANSI NFPA 70
31. ctions and debris and all equipment access control panels are in place Verify air filters are cleaned and properly installed Verify duct work is sealed to prevent air leakage Verify line voltage power leads are securely connected and the unit is properly grounded Verify low voltage wires are securely connected to the correct leads on the low voltage terminal strip Verify power supply branch circuit overcurrent protection is sized properly Verify the thermostat is wired correctly zs Start Up Procedures The thermostat s function mode should be set to OFF and the fan mode should be set to AUTO Close all electrical disconnects to energize the system Air Circulation Indoor Blower N CAUTION These units have a crankcase heater factory installed Wait 24 hours prior to startup to allow for heating ofthe compressor crankcase Failure to comply may result in damage and could cause premature failure of the system 1 Set the thermostat system mode on OFF and the fan mode to ON 2 Verify the blower runs continuously Check the air delivery at the supply registers and adjust register openings for balanced air distribution If insufficient air is detected examine ductwork for leaks or obstructions 3 Set the thermostat fan mode to AUTO and verify the blower stops running System Cooling 1 Set the thermostat s system mode to COOL and the fan mode to AUTO Gradually lower the thermostat tempera
32. ctrical appliances Refer to the thermostat manufacturer s instruction sheet for detailed mounting and installation information Comfort Alert Diagnostics Module Select Models Only The Comfort Alert Diagnostics Module Figure 5 page 8 is a breakthrough innovation for troubleshooting heat pump and air conditioning system failures The module installs easily in the electrical box of the outdoor unit near the compressor contactor By monitoring and analyzing data from the Copeland scroll compressor and thethermostat demand the module can accurately detect the cause of electrical and system related failures without any sensors A flashing LED indicator communicates the ALERT code and a diagnostic key is also imprinted on the side of the module to quickly direct the technician to the root cause of a problem NOTE This module does not provide safety protection The Comfort Alert Diagnostics POWER LED Green AT RAY Diagnostics Key SS D L 7 7 X M ALERT LED Yellow Figure 5 Comfort Alert Diagnostics Module Module is a monitoring device and cannot control or shut down other devices 24 VAC Power Wiring The Comfort Alert module requires a constant nominal 24 VAC power supply The module cannot be powered by the C terminal on a defrost board or other control board without experiencing nuisance alerts NOTE The wiring to the module s R amp C terminals must
33. eset the fan and compressor in the outdoor unit may not start immediately A protective timer circuit holds the compressor and the outdoor fan off for approximately three minutes following a previous operation or the interruption of the main electrical power Heating Operation Only 1 Set the thermostat s system mode to HEAT or AUTO and change the fan mode to AUTO See Figure 1 2 Setthe temperature selector to the desired temperature level The compressor outdoor fan and blower motor will cycle on and off to maintain the indoor temperature at the desired heating level NOTE If the temperature level is re adjusted or the system mode is reset the fan and compressor in the outdoor unit may not start immediately A protective timer circuit holds the compressor and the outdoor fan off for approximately three minutes following a previous operation or the interruption of the main electrical power Emergency Heat Some thermostats may include a system mode called EM HT or AUX HT etc This is a back up heating mode that should only be used if a problem is suspected With the mode set to EM HT etc the compressor and outdoor fan will be locked off and supplemental heat electric resistance heating will be used as a source of heat Sustained use of electric resistance heat in place of the heat pump will result in an increase in electric utility costs Defrost Operation During cold weather heating operation the outdoor unit will
34. his type of equipment Refrigerant charging must be done by qualified personnel familiar with safe and environmentally responsible refrigerant handling procedures Under no circumstances should the owner attempt to install and or service this equipment Failure to comply with this warning could result in property damage personal injury or death A CAUTION This unit uses refrigerant R 410A DO NOT use any other refrigerant in this unit Use of another refrigerant will damage the unit WARNING The information listed below must be followed during the installation service and operation of this unit Unqualified individuals should not attempt to interpret these instructions or install this equipment Failure to follow safety recommendations could result in possible damage to the equipment serious personal injury or death The installer must comply with all local codes and regulations which govern the installation of this type of equipment Local codes and regulations take precedence over any recommendations contained in these instructions Consult local building codes and the National Electrical Code ANSI CI for special installation requirements All electrical wiring must be completed in accordance with local state and national codes and regulations and with the National Electric Code ANSI NFPA 70 or in Canada the Canadian Electric Code Part 1 CSA C 22 1 This equipment contains liquid and gaseous refrigerant u
35. ifference between the indoor and outdoor sections should not exceed 20 ft To maintain the unit s warranty it is required that a filter drier be installed when the system is open to the atmosphere This includes but is not limited to replacing the evaporator and or condenser of a system The filter drier must be installed in strict accordance with the manufacturers installation instructions Optional equipment such as liquid line solenoid valves low ambient etc should be installed in strict accordance with the manufacturer s installation instructions ELECTRICAL WIRING WARNING To avoid risk of electrical shock personal injury or death disconnectall electrical power to the unit before performing any maintenance or service The unit may have more than one electrical supply Label all wires prior to disconnection when servicing the unit Wiring errors can cause improper and dangerous operation All electrical connections must be in compliance with all applicable local codes and ordinances and with the current revision of the National Electric Code 70 For Canadian installations the electrical connections and grounding shall comply with the current Canadian Electrical Code CSA C22 1 and or local codes Pre Electrical Checklist V Verify that the voltage frequency and phase of the supply source match the specifications on the unit rating plate See Table page Verify that the
36. is OSN3S GO 1SOH33G anv aLIHM NMOH8 CA 4 3n18 1n02M zm 39NVHO AVLSOWHSHL OL ama F5 anl HOSS3HdWOO JINON 1431Y LHO4W09 9 IHL H NOHYHL 3HIM SIHL 31104 1 5 YOLOVLNOD MOTIAA JINON 18877 1 5 dalda HOSN3S ON3931 HOSN3S anv anv 5 02 JONVvHO JINON 1H3 1v 1HOJINOO NI 9NIN3dO 5 IHL 3HIM SIHL 3104 ZH 09 eseud ajbuls HOLlOvdvO 0 2 80 31naOwW 1ud1v 1HOJIACO NI 9NIN3dO d HL HONOYHL SIHL 31108 9119 e 061 suonej eisui xne sed 1 N 2 sap 1ueuienbiun 2 2 ueno Syy jeuondo pue 10 5 Z SSe 9 eAQp 9e pz 0 12901 02 79 ejejd ees uonoejoud pue 104 2 GOL 40 5 5
37. l LAITY N3dO S ysel LHATV YOLOY 33201 45914 1 Ajuo 10SS 1AW09 ONITDAD 1HOHS 902 USEIH LHII MOII9A JosseJduioo 10 spw jo ensseJd 10 eDreuosig IYNSSIYd WALSAS 2 Luv uns Buruuni si 5 ysel 1H371V you si 1055 ay si jeuDis Jamod sey H3 MOd U39019 1311 51815 H9IH ONIHIM 981 0996011 YOSN3S HOSN3S Plougjos eA eA SAY YOUMS YBIH SdH YOUMS M07 Sd piouejos Josseidwoy 959 HOO 00 1010200 99 anv HOSN3S W ET HOSN3S W quvoa 1s0ud3a 1 pejoeuuoo 1 SI ZA GIUM pue Sjepoul uoi 2 eui ui pejoeuuoo JOU SI LA 41M 9U JLON 1no2M NI ZM YOLOW 19 5 Models 1431Y NI 9SNIN3dO 9 JHL
38. le s amp terminals Green LED intermittent module powers Determine if 4 terminals are wired in reverse up only when compressor runs Verify modules and terminals have a constant source Verify terminal is connected to 24VAC at contactor coil Trip LED is on but system and Verify voltage at contactor coil falls below 0 5VAC when off compressor check OK Verify 24VAC is present across Y amp when thermostat demand signal is present If not R amp C are reversed wired TRIP LED Rn LED tasting Verify and terminals are supplied with 19 28VAC together ALERT Flash CODE 3 displayed Verify terminal is connected to 24VAC at contactor coil incorrectly Compressor short cycling Verify voltage at contactor coil falls below 0 5VAC when off Verify the compressor run and start wires are routed through the module s current sensing holes Verify the Y terminal is connected to 24VAC at contactor coil Verify voltage at contactor coil falls below 0 5VAC when off ALERT Flash Code 5 6 or 7 displayed incorrectly Open Circuit Open Start Circuit or Open Run Circuit ALERT Flash Code 6 Open Start Circuit displayed for Code 7 Open Run Circuit or vice versa Verify the compressor run and start wires are routed through the correct module sensing holes Determine if module s terminal is connected Verify Y terminal is connected to 24VAC at contactor coil
39. lying the heat pump Resetting circuit breakers or other switches Adjusting or calibrating of thermostat IMPORTANT Please read this information thoroughly and become familiar with the capabilities and use of your appliance before attempting to operate or maintain this unit Keep this literature where you have easy access to it in the future If a problem occurs check the instructions and follow recommendations given If these suggestions don t eliminate the problem call your servicing contractor The Installation Instructions are primarily intended to assist qualified individuals experienced in the proper installation of this appliance Some local codes require licensed installation service personnel for this type of equipment Please read all instructions carefully before starting the installation DO DESTROY PLEASE READ CAREFULLY amp KEEP IN A SAFE PLACE FOR FUTURE REFERENCE USER S INFORMATION OPERATING INSTRUCTIONS Please refer to the thermostat manufacturer s User manual for detailed programming instructions Cooling Operation Only 1 Set the thermostat s system mode to COOL or AUTO and change the fan mode to AUTO See Figure 1 2 Setthe temperature selector to the desired temperature level The outdoor fan compressor and blower motor will all cycle on and off to maintain the indoor temperature at the desired cooling level NOTE If the temperature level is re adjusted or the system mode is r
40. nder high pressure DO NOT USE ANY PORTION OF THE CHARGE FOR PURGING OR LEAK TESTING Installation or servicing should only be performed by qualified trained personnel thoroughly familiar with this type equipment e Fully annealed refrigerant grade copper tubing should be used when installing the system Refrigerant suction line tubing should be fully insulated Installation of equipment may require brazing operations Installer must comply with safety codes and wear appropriate safety equipment safety glasses work gloves fire extinguisher etc when performing brazing operations This unit is designed for outdoor installations only and should be located as descibed on page 6 Follow all precautions in the literature on tags and on labels provided with the equipment Read and thoroughly understand the instructions provided with the equipment prior to performing the installation and operational checkout of the equipment HEAT PUMP INSTALLATION General Information The JT4BF series Heat Pump is designed only for outdoor rooftop or ground level installations This unit has been tested for capacity and efficiency in accordance with A H R I Standards and will provide many years of safe and dependable comfort providing it is properly installed and maintained Abuse improper use and or improper maintenance can shorten the life of the appliance and create unsafe hazards To achieve optimum performance and minimize equipmen
41. ntenance Failure to comply may result in personal injury or death Proper maintenance is most important to achieve the best performance from the appliance and should be performed by a qualified service technician at least once a year Read the maintenance items below and follow the instructions for years of safe trouble free operation Regular Cleaning N WARNING Do not place combustible material on or against the unit cabinet Do not place combustible materials including gasoline and any other flammable vapors and liquids in the vicinity of the unit Clean or replace the indoor air filter at the start of each heating and cooling season and when an accumulation of dust and dirt is visible on the air filter Remove any leaves and grass clippings from around the coil of the outdoor unit being careful not to damage the aluminum fins Check and remove any obstructions such as twigs sticks etc WARRANTY INFORMATION A warranty certificate with full details is included with the heat pump Carefully review these responsibilities with your dealer or service company The manufacturer will not be responsible for any costs found necessary to correct problems due to improper setup improper installation adjustments improper operating procedure on the part of the user etc Some specific examples of service calls which are not included in the limited warranty are Correcting wiring problems in the electrical circuit supp
42. perature Other features of the of the demand defrost board include 4 Field selectable defrost termination temperatures 50 F 80 F coil temperature Field selectable compressor delay feature High pressure and low pressure switches Sensing of second stage compressor demand Test speed up capability Anti short cycle timer 3 minutes for compressor protection On board diagnostics with flashing LED for quicker troubleshooting See Table 3 Control is uncalibrated when power is applied Calibration occurs after a defrost cycle The control initiates this sacrificial defrost after 34 minutes of accumulated compressor run time in heating with coil temperature below 35 F The defrost cycle terminates if coil sensor reaches selected termination temperature or after 14 minutes defrost DIAGNOSTIC DESCRIPTION Control Fault No Power Normal Operation On o Table 3 Control Diagnostic Defrost function is disabled if temperature is above 35 F If Ambient sensor is detected as open or shorted demand defrost will not operate and control will revert to time temperature defrost operation If the outdoor coil sensor is detected as open or shorted the control will not perform demand or time temperature defrost operation NOTE When the defrost cycle initiates there will be a 30 second compressor delay going into and out of the defrost cycle This delay may be removed by removing
43. start wiring or connections Open Start Circuit Check wiring and connectors between supply and the Current only in run circuit compressor S terminal Compressor start winding is damaged Check compressor motor winding resistance ALERT Flash Code 6 Yellow LED Open circuit in compressor run wiring or connections ALERT Check wiring and connectors between supply and the Open run circuit Flash Code 7 Currant only in compressor R terminal Yellow LED y Compressor run winding is damaged Check compressor motor winding resistance ALERT Flash Code 8 Yellow LED ALERT L w Voltage e Control circuit transformer is overloaded Flash Code 9 9 Low line voltage contact utility if voltage at disconnect is low Yellow LED COMPO EGU Check wiring connections Flash code number corresponds to a number of LED flashes followed by a pause and then repeated Trip and alert LED s flashing at same time means control circuit voltage is too low for operation Table 4 LED Diagnostics Continued Welded Contactor Compressor contactor has failed closed Compressor always runs Thermostat demand signal not connected to module 22 COMFORT ALERT TROUBLESHOOTING CONTINUED Miswired Module Indication Recommended Troubleshooting Action Green LED is not on module does not Determine if both amp module terminals are connected power up Verify voltage is present at modu
44. t failure it is recommended that periodic maintenance be performed on this unit The ability to properly perform maintenance on this equipment requires certain mechanical skills and tools Before You Install this Unit X The cooling load of the area to be conditioned must be calculated and a system of the proper capacity selected It is recommended that the area to be conditioned be completely insulated and vapor sealed Check the electrical supply and verify the power supply is adequate for unit operation The system must be wired and provided with circuit protection in accordance with local building codes If there is any question concerning the power supply contact the local power company V The indoor section air handler furnace etc should be installed before routing the refrigerant tubing Refer to the indoor unit s installation instructions for installation details All units are securely packed at the time of shipment and upon arrival should be carefully inspected for damage prior to installing the equipment at the job site Verify coil fins are straight If necessary comb fins to remove flattened or bent fins Claims for damage apparent or concealed should be filed immediately with the carrier X Please consult your dealer for maintenance information and availability of maintenance contracts Please read all instructions before installing the unit Locating the Heat Pump e Survey the job site to determine the best
45. t to 350 500 microns 6 Allow the unit to remain under vacuum for at least 30 min 7 Weigh In the proper amount of new or reclaimed R 410A refrigerant Refer to Table 2 or the units rating label to determine the correct amount of charge Refrigerant charging charts are applicable only to matched assemblies of NORDYNE equipment and listed airflows for the indoor coil Refer to Figures 7 10 pages 13 14 and Table 2 for correct system charge e JT5BD outdoor units with indoor coils not listed not recommended Deviations from rated airflows or non listed combinations may require modification to the expansion device and refrigerant charging procedures for proper and efficient system operation The refrigerant charge can be checked and adjusted through the service ports provided external to the outdoor unit Use only gage line sets which have a Schrader depression device present to actuate the valve SYSTEM CHARGE R 410A OZ 10 Table 2 Split System Heat Pump Charge Charging an R 410A system in AC mode at outdoor temperatures above 55 F 1 With the system operating at steady state measure the liquid refrigerant pressure in psig at the outdoor unit service valve 2 Measure the liquid refrigerant temperature in Fahrenheit at the service valve 3 Determine the required liquid refrigerant pressure Refer to Table 2 for correct system charge f the pressure measured in Step 1 is greater
46. than the required liquid refrigerant pressure determined in Step 3 then there is too much charge in the system Remove refrigerant and repeat Steps 1 through 3 until the system is correctly charged e f the pressure measured in Step 1 is less than the required liquid refrigerant pressure determined in Step 3 there is too little charge in the system Add refrigerant and repeat Steps 1 through 3 until the System is correctly charged Short Cycle Protection Charging an R 410A Unit in Heating Mode 1 Evacuate the refrigerant system 2 Weigh inthe proper charge per Table 2 using the Heating Charging Chart Figure 11 page 15 as a guide Unit charge MUST be verified in cooling season 3 Verify the unit is operating properly Short Cycle Protection 1 With the system operating in COOLING mode record the setpoint temperature setting of the thermostat 2 Gradually raise the setpoint temperature until the outdoor unit and indoor blower de energize 3 Immediately lower the setpoint temperature of the thermostat to its original setting and verify that the indoor blower is energized and that the outdoor unit remains de energized 4 After approximately 3 minutes verify that the outdoor unit energizes and the temperature of the air supplied to the facility is cooler than ambient temperature Defrost Cycle Control The defrost cycle is controlled by an Adaptive Demand Defrost algorithm that monitors coil temperature and ambient tem
47. to prevent accumulation of moisture and other contaminants After outdoor and indoor unit placement has been determined route refrigerant tubing between the equipmentin accordance with sound installation practices When connecting refrigerant linesets together it is recommended that dry nitrogen be flowing through the joints during brazing to prevent internal oxidation and scaling Refrigerant tubing should be routed in a manner that minimizes the length of tubing and the number of bends in the tubing If precise forming of refrigerant lines is required a copper tubing bender is recommended Avoid sharp bends and contact of the refrigerant lines with metal surfaces Refrigerant tubing should be supported in a manner that the tubing will not vibrate or abrade during system operation Tubing should be kept clean of foreign debris during installation Every effort should be made by the installer to ensure that the field installed refrigerant containing components of the system have been installed in accordance with these instructions and sound installation practices to insure reliable system operation and longevity The maximum recommended interconnecting refrigerant line lengths is 75 ft and the vertical COPPER WIRE SIZE AWG 1 Voltage Drop Supply Wire Length Feet Supply Circuit Ampacity Wire Size based on N E C for 60 type copper conductors Table 1 Copper Wire Size elevation d
48. ture setpoint below room temperature and verify the outdoor unit and indoor blower energize 2 Verify blower wheel is spinning in direction indicated by arrow Feel the air being circulated by the indoor blower and verify that it is cooler than ambient temperature Listen for any unusual noises If unusual sounds occur determine the source of the noise and correct as necessary 3 Verify HI and LO refrigerant pressures 4 Allow the system to operate for several minutes and then set the temperature selector above room temperature Verify the fan and compressor cycle off with the thermostat NOTE The blower should also stop unless fan mode is set to the ON position System Heating optional 1 If heating equipment furnace air handler is provided with the system lower the thermostat setpoint temperature to the lowest temperature setting and change the thermostat s system mode to HEAT 2 Gradually increasethe thermostat s setpointtemperature to the maximum setting 3 Verify the optional heating equipment furnace electric heat and indoor blower energize Feel the air being circulated by the indoor blower and verify that it is warmer than ambient temperature Listen for any unusual noises If unusual sounds occur determine the source of the noise and correct as necessary NOTE Other sources for heating electric furnace fossil fuel furnace air handler with electric heat options etc that interface with the heat pump
Download Pdf Manuals
Related Search