Table of Contents
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Installer's Guide
Heat Pumps
Models
A4HP6018A1000B
A4HP6024A1000B
A4HP6030A1000B
A4HP6036A1000B
A4HP6042A1000B
A4HP6048A1000B
A4HP6060A1000B
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating,
and air-conditioning equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or
altered equipment by an unqualified person could result in death or serious injury. When working on the equipment, observe all pre-
cautions in the literature and on the tags, stickers, and labels that are attached to the equipment.
February 2021
Note: "Graphics in this document are for representation only.
SAFETY WARNING
88-A4HP6001-1D-EN
Actual model may differ in appearance."
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Table of Contents
Related Manuals for Ameristar A4HP6018A1000B
Summary of Contents for Ameristar A4HP6018A1000B
- Page 1 Installer’s Guide Heat Pumps Models A4HP6018A1000B A4HP6024A1000B A4HP6030A1000B A4HP6036A1000B A4HP6042A1000B A4HP6048A1000B A4HP6060A1000B Note: “Graphics in this document are for representation only. Actual model may differ in appearance.” SAFETY WARNING Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training.
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Page 2: Section 1. Safety
Section 1. Safety IMPORTANT — This Document is customer property WARNING and is to remain with this unit. Please return to service information pack upon completion of work. Extreme caution should be exercised when opening the Liquid Line Service Valve. Turn counterclockwise WARNING until the valve stem just touches the rolled edge. -
Page 3: Table Of Contents
Table of Contents Section 1. Safety ................................2 Section 2. Unit Location Considerations ........................4 Section 3. Unit Preparation............................7 Section 4. Setting the Unit ............................7 Section 5. Refrigerant Line Considerations ....................... 8 Section 6. Refrigerant Line Routing ........................... 9 Section 7. -
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) A4HP6018A 28.6 X 25.6 X 25.6 A4HP6024A 28.6 X 29.8 X 29.8 A4HP6030A 36.6 X 34.3 X 34.3 A4HP6036A 36.6 X 34.3 X 34.3 A4HP6042A... - Page 5 2.3 Refrigerant Piping Limits 1. The maximum TOTAL length of refrigerant lines from outdoor to indoor unit should NOT exceed 150 feet (including lift). 2. The maximum vertical change should not exceed 50 feet. Standard Line Set 150’ Max TOTAL Line Length 3.
- Page 6 2.4 Suggested Locations for Best Reliability Ensure the top discharge area is unrestricted for Avoid Install at 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.
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Page 7: Section 3. Unit Preparation
Section 3. Unit Preparation 3.1 Prepare The Unit For Installation STEP 1 - Check for damage and report prompt- ly to the carrier any damage found to the unit. Section 4. Setting the Unit 4.1 Pad Installation When installing the unit on a support pad, such as a concrete slab, consider the following: •... -
Page 8: 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 A4HP6018A A4HP6024A A4HP6030A A4HP6036A A4HP6042A A4HP6048A A4HP6060A 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 9: 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 10: Section 7. Refrigerant Line Brazing
8 Feet Maximum Wall Isolator Line Set 8 Feet Maximum Side View Secure Vapor Line using isolators every 8 ft. Secure Liquid Line directly to Vapor Line using tape, wire, or other appropriate method every 8 ft. Isolation In Wall Spaces Wall Sealant Ductwork... - Page 11 STEP 2 - Remove the pressure tap cap and valve cores from both service valves. STEP 3 - Purge the refrigerant lines and indoor coil with dry nitrogen. STEP 4 - Wrap a wet rag around the valve body to avoid heat damage and continue the dry nitro- gen purge.
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Page 12: Section 8. Refrigerant Line Leak Check
STEP 5 - Replace the pressure tap valve cores after the service valves have cooled. Section 8. Refrigerant Line Leak Check 8.1 Check For Leaks STEP 1 - Pressurize the refrigerant lines and 150 PSIG evaporator coil to 150 PSIG using dry nitrogen. STEP 2 - Check for leaks by using a soapy solu- tion or bubbles at each brazed location. -
Page 13: Section 9. Evacuation
Section 9. Evacuation 9.1 Evacuate the Refrigerant Lines and Indoor Coil Important: Do not open the service valves until the refrigerant lines and indoor coil leak check and evacuation are complete. 0350 Microns STEP 1 - Evacuate until the micron gauge reads no higher than 350 microns, then close off the valve to the vacuum pump. -
Page 14: Section 11. Electrical - Low Voltage
10.1 Open the Liquid Service Valve WARNING Extreme caution should be exercised when opening the Liquid Line Service Valve. Turn counterclockwise until the valve stem just touches the rolled edge. No torque is required. Unit Side 3/16” Hex Wrench Failure to follow this warning will result in abrupt of Service release of system charge and may result in Valve... - Page 15 11.2 Low Voltage Hook-up Diagrams AC SYSTEMS HEAT PUMP SYSTEMS Outdoor Outdoor Thermostat Air Handler Thermostat Air Handler Unit Unit 24 VAC HOT 24 VAC HOT 24 VAC 24 VAC Common Common Blue Blue COOL/HEAT COOLING 1st STAGE HEATING HEAT 2nd STAGE White White...
- Page 16 11.3 Defrost Control Defrost controls have a selectable termination tem- perature. As shipped, defrost will terminate at 47°F. Defrost Board Detail For a higher termination temperature, cut Jumper J2 to achieve 70°F. See Service Facts shipped in the outdoor unit for more information. Pin Identification on J5 (See Illustration) 1.
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Page 17: 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 18: Section 13. Start Up
Section 13. Start Up 13.1 System Start Up STEP 1 - Ensure Sections 7 through 12 have been completed. STEP 2 - Set System Thermostat to OFF. DONE CANCEL STEP 3 - Turn on disconnect(s) to apply power to the indoor and outdoor units. STEP 4 - Wait one (1) hour before starting the unit if compressor crankcase heater acces- sory is used and the Outdoor Ambient is below... -
Page 19: Section 14. System Charge Adjustment (Systems Can Be Rated With Txv, Eev Or Piston)
Section 14. System Charge Adjustment (Systems can be rated with TXV, EEV or Piston) NOTE: For systems using a indoor piston metering device, refer to the Superheat charging method and chart. For systems using a TXV or EEV indoor metering device, refer to Subcool charging method and charts. 14.1 Temperature Measurements STEP 1 - Check the outdoor temperatures. - Page 20 STEP 2 - Determine the final subcooling value using total Line Length and Lift measured in STEP 1 and the charts below. 1 1/2 Ton Heat Pump 2 Ton Heat Pump SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) Add 1°...
- Page 21 STEP 4 - Measure the liquid line temperature and pressure at the outdoor unit’s service valve. Measured Liquid Line Temp = __________ º F Liquid Gage Pressure = __________ PSIG Final Subcooling Value = __________ º F 107 °F STEP 5 - Use the final subcooling value, refriger- Table 14.2 ant temperature and pressure from STEP 4, to R-410A REFRIGERANT CHARGING CHART...
- Page 22 STEP 6 - Adjust refrigerant level to attain proper gage pressure. Add refrigerant if the Liquid Gage Pressure is lower than the chart value. 1. Connect gages to refrigerant bottle and unit as illustrated. 2. Purge all hoses. 3. Open bottle. 4.
- Page 23 Fixed Orifice Superheat Charging Table Indoor Wet Bulb Temp (F) Outdoor Bulb Temp. Using a digital psychrometer, measure the return air wet-bulb temperature at the unit just before the coil. Also measure the outdoor dry-bulb tem- perature. Use these temperatures to locate the target superheat on the charging table. Do not attempt to charge the system if these conditions fall outside of this charging table.
- Page 24 STEP 9 - Record System Information for refer- ence. Record system pressures and temperatures after charging is complete. Measured Suction Line Temp = __________ º F Outdoor model number = _________________ Liquid Gage Pressure = __________ PSIG Measured Outdoor Ambient = __________ º F Suction Gage Pressure = __________ PSIG Measured Indoor Ambient = __________ º...
- Page 25 STEP 2 - Stabilize the system by operating for a minimum of 20 minutes. 20 MIN. At startup, or whenever charge is removed or added, the system must be operated for a mini- mum of 20 minutes to stabilize before accurate measurements can be made.
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Page 26: Section 15. Checkout Procedures And Troubleshooting
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 27 15.2 Troubleshooting SYSTEM FAULTS REFRIGERANT CIRCUIT Head Pressure Too High Head Pressure Too Low Suction Pressure Too High Suction Pressure Too Low Liquid Refrig. Floodback (TXV/EEV) Liquid Refrig. Floodback (Cap. Tube) I.D. Coil Frosting Compressor Runs Inadequate or No Cooling/Htg ELECTRICAL Compressor &...
- Page 28 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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