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ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
IMPORTANT - This Document is customer property and is to remain with this unit. Please return to service informa-
tion pack upon completion of work.
These instructions do not cover all variations in systems or provide for every possible contingency to be met in connection with
the installation. Should further information be desired or should particular problems arise which are not covered sufficiently for the
purchaser's purposes, the matter should be referred to your installing dealer or local distributor.
Note: The manufacturer recommends installing only approved matched indoor and outdoor systems. All of the manufacture's split
systems are A.H.R.I. rated only with TXV/EEV indoor systems. Some of the benefits of installing approved matched indoor and
outdoor split systems are maximum efficiency, optimum performance and the best overall system reliability.
Table of Contents
Section 1. Safety ..................................................................................... 2
Section 2. Unit Location Considerations.............................................. 4
Section 3. Unit Preparation .................................................................... 5
Section 4. Setting the Unit ..................................................................... 5
Section 5. Refrigerant Line Considerations ......................................... 6
Section 6. Refrigerant Line Routing ..................................................... 7
Section 7. Refrigerant Line Brazing ...................................................... 8
Section 8. Refrigerant Line Leak Check ............................................... 9
Section 9. Evacuation ............................................................................. 9
Section 10. Service Valves ..................................................................... 9
Section 11. Electrical - Low Voltage ................................................... 10
Section 12. Electrical - High Voltage .................................................. 13
Section 13. Start Up .............................................................................. 13
Section 14. System Charge Adjustment ............................................. 13
Section 15. Checkout Procedures ....................................................... 18
Section 16. Defrost Control ................................................................. 19
Section 17. Troubleshooting ................................................................ 22
Section 18. Wiring Diagrams ............................................................... 24
Section 19. Pressure Curves ............................................................... 28
Section 20. Refrigerant Circuit (only for reference)........................... 32
Installation and Operation Manual
Heat Pumps
A4HP5
88-A4HP5001-1D-EN
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Summary of Contents for Trane A4HP5
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Page 1: Table Of Contents
88-A4HP5001-1D-EN Installation and Operation Manual Heat Pumps A4HP5 ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES IMPORTANT – This Document is customer property and is to remain with this unit. Please return to service informa- tion pack upon completion of work. -
Page 2: Section 1. Safety
Section 1. Safety WARNING WARNING LIVE ELECTRICAL COMPONENTS! This information is intended for use by individuals During installation, testing, servicing, and trouble- possessing adequate backgrounds of electrical and shooting of this product, it may be necessary to work mechanical experience. Any attempt to repair a central with live electrical components. - Page 3 CAUTION WARNING HOT SURFACE! Warning! May cause minor to severe burning. Failure to follow This product can expose you to chemicals including this Caution could result in property damage or per- lead which are known to the State of California to sonal injury.
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Page 4: Section 2. Unit Location Considerations
Section 2. Unit Location Considerations 2.1 Unit Dimensions and Weight Table 2.1 Unit Dimensions and Weight Models H x W x D (in) Weight* (lb) A4HP5018D 32.6 X 29.8 X 29.8 A4HP5024D 32.6 X 29.8 X 29.8 A4HP5030D 28.6 X 29.8 X 29.8 A4HP5036D 36.6 X 34.3 X 34.3 A4HP5042D... -
Page 5: Section 3. Unit Preparation
2.4 Suggested Locations for Best Reliability Ensure the top discharge area is unrestricted for at Avoid Install least five (5) feet above the unit. Near Bedrooms Three (3) feet clearance must be provided in front of the control box (access panels) and any other side requiring service. -
Page 6: Section 5. Refrigerant Line Considerations
Section 5. Refrigerant Line Considerations 5.1 Refrigerant Line and Service Valve Connection Sizes Table 5.1 Line Sizes Service Valve Connection Sizes Vapor Liquid Vapor Line Liquid Line Model Line Line Connection Connection A4HP5018D A4HP5024D A4HP5030D A4HP5036D A4HP5042D A4HP5048D A4HP5060D 5.2 Factory Charge The outdoor condensing units are factory charged with the system charge required for the outdoor condensing unit, ten (10) feet of tested connecting line, and the smallest rated indoor evaporative coil match. -
Page 7: Section 6. Refrigerant Line Routing
5.5 Reuse Existing Refrigerant Lines CAUTION If using existing refrigerant lines make certain that all joints are brazed, not soldered. For retrofit applications, where the existing indoor evaporator coil and/or refrigerant lines will be used, the following precautions should be taken: •... -
Page 8: Section 7. Refrigerant Line Brazing
Wall Sealant Insulation Ductwork Vapor Line Isolator Line Set DO NOT hang line sets from ductwork Isolation Through Wall Section 7. Refrigerant Line Brazing 7.1 Braze The Refrigerant Lines STEP 1 - Remove caps or plugs. Use a deburing tool to debur the pipe ends. Clean both internal and external surfaces of the tubing using an emery cloth. -
Page 9: Section 8. Refrigerant Line Leak Check
Section 8. Refrigerant Line Leak Check 8.1 Check For Leaks STEP 1 - Pressurize the refrigerant lines and evaporator coil to 150 PSIG using dry nitrogen. STEP 2 - Check for leaks by using a soapy solution or bubbles at each brazed location. Remove nitrogren pressure and repair any leaks before continuing. -
Page 10: Section 11. Electrical - Low Voltage
Section 11. Electrical - Low Voltage 11.1 Low Voltage Maximum Wire Length Table 11.1 Table 11.1 defines the maximum total length of low voltage wiring from the outdoor unit, to the 24 VOLTS indoor unit, and to the thermostat. WIRE SIZE MAX. - Page 11 2 Stage HP Thermostat AUX 1 AUX 1 AUX 1 AUX 2 AUX 2 INDOOR UNIT OUTDOOR UNIT AUX 2 24VAC HOT COMMON Y1/YIo COOLING Y/Y2 HEATING 11.3 Defrost Control Defrost controls have a selectable termination Defrost Board Detail temperature. As shipped, defrost will terminate at 47°F.
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Page 12: Section 12. Electrical - High Voltage
Section 12. Electrical - High Voltage 12.1 High Voltage Power Supply WARNING LIVE ELECTRICAL COMPONENTS! During installation, testing, servicing, and troubleshooting of this product, it may be nec- essary to work with live electrical components. Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury. - Page 13 14.2 Subcooling Charging in Cooling (Above 55º F Outdoor Temp.) STEP 1 - Use the refrigerant line total length and lift measurements from Section 5.3. Total Line Length = __________ Ft. Vertical Change (Lift) = __________ Ft. LIFT Note: Use this method when matched with a TXV or EEV indoor unit.
- Page 14 STEP 3 - Stabilize the system by operating for a minimum of 20 minutes. At startup, or whenever charge is removed or added, the system must be operated for a minimum of 20 minutes to stabilize before accurate measurements can be made. STEP 4 - Measure the liquid line temperature and pressure at the outdoor unit’s service valve.
- Page 15 (Example only) TAM4A0A36S31 TAM4A0A36S31 Cooling Heating INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, INDOOR ENTERING DRY BULB CURVES TOP TO BOTTOM 80, 70, AND 60 67, 63 AND 59 DEG F. DEG F. OUTDOOR TEMPERATURE (Degree F) INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM INDOOR ENTERING DRY BULB CURVESTOP TO BOTTOM 80, 70, AND 71, 67, 63 AND 59 DEG F.
- Page 16 14.3 Subcooling Charging Below 55º F Outdoor Temp. (In Heating Only) The Subcooling Charging method in cooling is not recommended below 55º F outdoor temperature. The only recommended method of charging at outdoor temperatures below 55º F is weighing in the charge in heating mode.
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Page 17: Section 15. Checkout Procedures
Section 15. Checkout Procedures and Troubleshooting 15.1 Operational And Checkout Procedures Final phases of this installation are the unit Operational and Checkout Procedures. To obtain proper performance, all units must be operated and charge adjustments made. Important: Perform a final unit inspection to be sure that factory tubing has not shifted during shipment. Adjust tubing if necessary so tubes do not rub against each other when the unit runs. -
Page 18: Section 16. Defrost Control
Section 16. Defrost Control Defrost Control The demand defrost control measures heat pump out- door ambient temperature with a sensor located outside the outdoor coil. A second sensor located on the outdoor coil is used to measure the coil temperature. The dif- ference between the ambient and the colder coil tem- perature is the difference or delta-T measurement. - Page 19 Table 1. Defrost Control Thermistor Table Table 2. DEMAND DEFROST QUICK SPECS THERMISTOR DEFROST ENABLED: TEMP °F TEMP °C RESISTANCE Volts DC 52 °F 52 °F Y = ON COIL TEM- (OHMS) PERATURE -15.00 -26.11 135976 2.50 DEFROST PERMIT: Y 32 °F 32 °F = ON COIL TEMPERA-...
- Page 20 c. Ambient sensor failure will initiate an Adaptive DEFROST Timed Limp Mode. This will be accompanied FAULT FAULT CONTROL DESCRIPTION by a 1 flash. The DFC will initiate defrost after CODES BEHAVIOR 60 minutes of accumulated heating runtime and force a defrost, which will terminate on Hard Lock Out (can coil temp.
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Page 21: Section 17. Troubleshooting
Section 17. Troubleshooting Compressor fails to start Contactor check Is contactor engergized? Go To: Compressor won’t run (contacts closed) Wait 3 minutes and check contactor Check for 24 volts AC coil again across contactor coil Is voltage If applicable, is TDR present at input voltage Replace contactor... - Page 22 Compressor won’t run Contactor is closed Check for high voltage to contactor Check for open IOL Is high voltage present (Internal Overload) at T1 and T2 ? Check resistance of C to S and C to R Does the Check power resistance check Allow compressor supply from...
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Page 23: Section 18. Wiring Diagrams
Section 18. Wiring Diagrams 88-A4HP5001-1D-EN 23 D... - Page 24 88-A4HP5001-1D-EN...
- Page 25 88-A4HP5001-1D-EN 25 D...
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Page 27: Section 19. Pressure Curves
Section 19. Pressure Curves COOLING PERFORMANCE CAN BE CHECKED WHEN THE OUTDOOR TEMP IS ABOVE 65 DEG F. TO CHECK COOLING PERFORMANCE, SELECT THE PROPER INDOOR CFM, ALLOW PRESSURES TO STABILIZE. MEASURE INDOOR WET BULB TEMPERATURE, OUTDOOR TEMPERATURE, DISCHARGE AND SUCTION PRESSURES. ON THE PLOTS LOCATE OUTDOOR TEMPERATURE (1); LOCATE INDOOR WET BULB (2);... - Page 28 PRESSURE CURVES FOR A4HP5024D1 TAM9A0B30V31 TAM9A0B30V31 Cooling @ 900 SCFM Heating @ 850 SCFM INDOOR ENTERING INDOOR ENTERING WET BULB CURVES DRY BULB CURVES TOP TO BOTTOM TOP TO BOTTOM 80, 70, 71, 67, 63 AND 59 DEG F. AND 60 DEG F. OUTDOOR TEMPERATURE (Degree F) INDOOR ENTERING INDOOR ENTERING...
- Page 29 PRESSURE CURVES FOR A4HP5036D1 TEM4A0C36S41+TDR TEM4A0C36S41+TDR Cooling @ 1300 SCFM Heating @ 1300 SCFM INDOOR ENTERING INDOOR ENTERING WET BULB CURVES DRY BULB CURVES TOP TO BOTTOM TOP TO BOTTOM 71, 67, 63 AND 59 DEG F. 80, 70, AND 60 DEG F. OUTDOOR TEMPERATURE (Degree F) INDOOR ENTERING INDOOR ENTERING...
- Page 30 PRESSURE CURVES FOR A4HP5048N1 TEM6A0D48H41 TEM6A0D48H41 Cooling @ 1400 SCFM Heating @ 1450 SCFM INDOOR ENTERING INDOOR ENTERING WET BULB CURVES DRY BULB CURVES TOP TO BOTTOM TOP TO BOTTOM 71, 67, 63 AND 59 DEG F. 80, 70, AND 60 DEG F. OUTDOOR TEMPERATURE (Degree F) INDOOR ENTERING INDOOR ENTERING...
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Page 31: Section 20. Refrigerant Circuit (Only For Reference)
Section 20. Refrigerant Circuit (only for reference) Heating Refrigeration Cycle Cooling Refrigeration Cycle Printed from D158861 88-A4HP5001-1D-EN 31 D... - Page 32 About Trane and American Standard Heating and Air Conditioning Trane and American Standard create comfortable, energy efficient indoor environments for residential applications. For more information, please visit www.trane.com or www.americanstandardair.com The AHRI Certified mark indicates company participation in the AHRI Certification program. For verification of individual certified products, go to ahridirectory.org.
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