Loading...
BLD2024-0249_Manufacturer_Specifications_and_Installation_Instructions_2.23.2024_3.48.32_PM_4080351Amwe-40 S7iWdardo HEATING & AIR CONDITIONING Installer's Guide Split System Heat Pumps 4A6H5018N1000A 4A6H5024N1000A 4A6H5030N1000A 4A6H5036N1000A 4A6H5042N1000A 4A6H5048N1000A 4A6H5060N1000A 4A6H5018H1000A 4A6H5019H1000A 4A6H5024H1000A 4A6H5030H1000A 4A6H5036H1000A 4A6H5042H1000A 4A6H5048H1000A 4A6H5060H1000A Note: "Graphics in this document are for representation only. Actual model may differ in appearance." 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. July 2022 11-BC26D1-11 C-EN Section 1. Safety IMPORTANT —This Document is customer property and is to remain with this unit. Please return to service information pack upon completion of work. This information is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience. Any attempt to repair a central air conditioning product may result in personal injury and/or property damage. The manufacture or seller cannot be responsible for the interpretation of this information, nor can it assume any liability in connec- tion with its use. These units use R-410A refrigerant which operates at 50 to 70% higher pressures than R-22. Use only R-410A approved service equipment. Refrigerant cylinders are painted a "Rose" color to indicate the type of refrigerant and may contain a "dip" tube to allow for charging of liquid refrigerant into the sys- tem. All R-410A systems use a POE oil that readily absorbs moisture from the atmosphere. To limit this "hygroscopic" action, the system should remain sealed whenever possible. If a system has been open to the atmosphere for more than 4 hours, the compressor oil must be replaced. Never break a vacuum with air and always change the driers when opening the system for component replacement. For specific handling concerns with R-410A and POE oil reference Retrofit Bulletins SS-APG006-EN and APP-APG011-EN or APP-APG012-EN. UNIT CONTAINS R-410A REFRIGERANT! R-410A operating pressures exceed the limit of R-22. Proper service equipment is required. Failure to use proper service tools may result in equipment damage or personal injury. SERVICE USE ONLY R-410A REFRIGERANT AND AP- PROVED POE COMPRESSOR OIL. 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. Failure to follow this warning will result in abrupt release of system charge and may result in personal injury and /or property damage. LIVE ELECTRICAL COMPONENTS! During installation, testing, servicing, and trouble- shooting of this product, it may be necessary 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. If using existing refrigerant lines make certain that all joints are brazed, not soldered. Scroll compressor dome temperatures may be hot. Do not touch the top of compressor; it may cause minor to severe burning. 11-BC26D1-11 C-EN Section 2. Unit Location Considerations 2.1 Unit Dimensions and Weight Table 2.1 Unit Dimensions and Weight Models H x D x W (in) Weight' (lb) 4A6H5018N 33 x 30 x 33 174 4A6H5024N 33 x 30 x 33 174 4A6H5030N 29 x 26 x 29 163 4A6H5036N 37 x 34 x 37 199 4A6H5042N 45 x 34 x 37 227 4A6H5048N 45 x 34 x 37 250 4A6H5060N 45 x 34 x 37 251 4A6H5018H 29 x 26 x 29 141 4A6H5019H 40 x 30 x 33 174 4A6H5024H 33 x 30 x 33 174 4A6H5030H 29 x 34 x 37 216 4A6H5036H 37 x 34 x 37 199 4A6H5042H 45 x 34 x 37 227 4A6H5048H 45 x 34 x 37 250 4A6H5060H 45 x 34 x 37 278 Weight values are estimated uncrated. When mounting the outdoor unit on a roof, be sure the roof will support the unit's weight. Properly selected isolation is recommended to alleviate sound or vibration transmission to the building structure. 2.2 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. 3. Service valve connection diameters are shown in Table 5.1. Note: For other line lengths, Refer to Refriger- ant Piping Application Guide, SS-APGO06-EN or Refrigerant Piping Software Program, 32- 3312-03 (or latest revision). Standard Line Set 150' Max TOTAL Line Length 11-BC261311-11 C-EN 3 2.3 Suggested Locations for Best Reliability Ensure the top discharge area is unrestricted for at least five (5) feet above the unit. Three (3) feet clearance must be provided in front of the control box (access panels) and any other side requiring service. It is not recommended to install in a location where noise may distract the building occu- pants. Some examples of these types of loca- tions are sleeping quarters and by windows of a living area. Please discuss location with the building owner prior to installation. Avoid locations such as near windows where condensation and freezing defrost vapor can annoy a customer. Position the outdoor unit a minimum of 12" from any wall or surrounding shrubbery to ensure adequate airflow. Outdoor unit location must be far enough away from any structure to prevent excess roof runoff water or icicles from falling directly on the unit. 2.4 Cold Climate Considerations NOTE: It is recommended that these precau- tions be taken for units being installed in areas where snow accumulation and prolonged below freezing temperatures occur. Units should be elevated 3-12 inches above the pad or rooftop, depending on local weather. This additional height will allow drainage of snow and ice melted during defrost cycle prior to its refreezing. Ensure that drain holes in unit base pan are not obstructed preventing draining of defrost water. • If possible, avoid locations that are likely to accumulate snow drifts. If not possible, a snow drift barrier should be installed around the unit to prevent a build-up of snow on the sides of the unit. Avoid Install Near Bedrooms Min 5Unrestricted Min 3' Min. 12' to — lam— Unrestricted' Shrubbery u_ ><- Access Panel AM1n4gmtufrrnrv,+iuµvrviw - �PMI1Mr'�IfN�.nIeII�11rM�nIItWw14P�Po'�nm wu'+�lnullaN Min. 12" ➢DID1➢11➢11ID1 f➢fOffD[U[Uf ➢➢➢g1➢33 f[➢EIRINIC 11DDD1D1ID1ID1 f[UffD@f[➢f[Uf DDDDDDE] ME[RE1D1 DD�DDDDDD u1m1D1HE NBarner IDID11D11D11D11 [QQ[Q[[Qf�QQ➢ll➢D➢D➢D➢D llUllQllQDDK ➢➢ID1333 fN�[IKINf Snow Legs 11DDD1➢11D➢D1 ff➢ff➢f➢f➢[ff➢f o 3-12" Elevation n Pad 4 11-BC26D1-11 C-EN 2.5 Coastal Considerations If installed within one mile of salt water, including seacoasts and inland waterways, models without factory sup- plied Seacoast Salt Shields require the addition of BAYSEAC001 (Seacoast Kit) at installation time. 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. STEP 2 - To remove the unit from the pallet, remove tabs by cutting with a sharp tool. 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: • The pad should be at least 1" larger than the unit on all sides. • The pad must be separate from any structure. • The pad must be level. • The pad should be high enough above grade to allow for drainage. • The pad location must comply with National, State, and Local codes. REJSA TASH 11-BC26D1-11 C-EN 5 Section 5. Refrigerant Line Considerations 5.1 Refrigerant Line and Service Valve Connection Sizes Table 5.1 Line Sizes Service Valve Connection Sizes Model Vapor Line Liquid Line Vapor Line Connection Liquid Line Connection 4A6H5018N 3/4 3/8 3/4 3/8 4A6H5024N 3/4 3/8 3/4 3/8 4A6H5030N 3/4 3/8 3/4 3/8 4A6H5036N 7/8 3/8 7/8 3/8 4A6H5042N 7/8 3/8 7/8 3/8 4A6H5048N 7/8 3/8 7/8 3/8 4A6H5060N 1-1/8 3/8 7/8 3/8 4A6H5018H 3/4 3/8 3/4 3/8 4A6H5019H 3/4 3/8 3/4 3/8 4A6H5024H 3/4 3/8 3/4 3/8 4A6H5030H 3/4 3/8 3/4 3/8 4A6H5036H 7/8 3/8 3/4 3/8 4A6H5042H 7/8 3/8 7/8 3/8 4A6H5048H 7/8 3/8 7/8 3/8 4A6H5060H 1-1/8 3/8 7/8 3/8 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. Always verify proper system charge via subcooling (TXWEEV) or superheat (fixed orifice) per the unit nameplate. 5.3 Required Refrigerant Line Length Determine required line length and lift. You will need this later in STEP 2 of Section 14. Total Line Length = Ft. Total Vertical Change (lift) = Ft. 5.4 Refrigerant Line Insulation Important: The Vapor Line must always be insulated. DO NOT allow the Liquid Line and Vapor Line to come in direct (metal to metal) contact. Liquid Line Vapor Line Insulation 11-BC26D1-11 C-EN 5.5 Reuse Existing Refrigerant Lines i 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: • Ensure that the indoor evaporator coil and refrigerant lines are the correct size. • Ensure that the refrigerant lines are free of leaks, acid, and oil. Important: For more information see publica- tion number SS-APG006-EN. Section 6. Refrigerant Line Routing 6.1 Precautions Important: Take precautions to prevent noise Comply with National, State, and Local Codes when within the building structure due to vibration isolating line sets from joists, rafters, walls, or other transmission from the refrigerant lines. structural elements. For Example: • When the refrigerant lines have to be fastened to floor joists or other framing in a structure, use isolation type hangers. • Isolation hangers should also be used when refrigerant lines are run in stud spaces or enclosed ceilings. • Where the refrigerant lines run through a wall or sill, they should be insulated and isolated. • Isolate the lines from all ductwork. • Minimize the number of 902 turns. 8 Feet Maximum Joist/Rafter 0 0 / 0 0 Isolator 0 0 0 0 0 0 0 0 0 0 0 O=01 0 Side View 8 Feet Maximum Line Set Secure Vapor line from joists using isolators every 8 ft. Secure Liquid Line directly to Vapor line using tape, wire, or other appro- priate method every 8 ft. Isolation From Joist/Rafter 11-BC26D1-11 C-EN 7 8 Feet Maximum Wall 0 0 0 0 0 0 0 0 Isolator 0 0 0 0 0 0 0 0 O o 1 0 I Line Set Side View 8 Feet Maximum 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 lation vapor Line Isolation Through Wall Section 7. Refrigerant Line Brazing 7.1 Braze The Refrigerant Lines STEP 1 - Remove caps or plugs. Use a debur- ing tool to debur the pipe ends. Clean both internal and external surfaces of the tubing using an emery cloth. DO NOT hang line sets from ductwork 8 11-BC26D1-11 C-EN 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. Braze the refrigerant lines to the service valves. For units shipped with a field -installed external drier, check liquid line filter drier's directional flow arrow to confirm correct direction of refrigeration flow (away from outdoor unit and toward evapo- rator coil) as illustrated. Braze the filter drier to the Liquid Line. Continue the dry nitrogen purge. Do not remove the wet rag until all brazing is completed. Important: Remove the wet rag before stopping the dry nitrogen purge. Note: Install drier in Liquid Line. NOTE: Precautions should be taken to avoid heat damage to basepan during brazing. It is recommended to keep the flame directly off of the basepan. o 3-4"from valve e �e e e, 11-BC26D1-11 C-EN 9 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 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. Remove nitrogren pressure and repair any leaks before continuing. 150 PSIG 10 11-BC26D1-11 C-EN 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. STEP 1 - Evacuate until the micron gauge reads no higher than 350 microns, then close off the valve to the vacuum pump. STEP 2 - Observe the micron gauge. Evacuation is complete if the micron gauge does not rise above 500 microns in one (1) minute. Once evacuation is complete blank off the vacuum pump and micron gauge, and close the valves on the manifold gauge set. Section 10. Service Valves 10.1 Open the Gas Service Valve Important: Leak check and evacuation must be completed before opening the service valves. NOTE: Do not vent refrigerant gases into the atmosphere. STEP 1 - Remove valve stem cap. STEP 2 - Using an adjustable wrench, turn valve stem 1/4 turn counterclockwise to the fully open position. STEP 3 - Replace the valve stem cap to prevent leaks. Tighten finger tight plus an additional 1/6 turn. 0350 Microns 0 ON OFF 1 MIN. 1/4 TURN ONLY CAP COUNTERCLOCKWISE FOR FULL OPEN POSITION VALVE STEM UNIT SIDE OF VALVE PRESSURE TAP PORT / GAS LINE CONNECTION 11-BC26D1-11 C-EN 11 10.1 Open the Liquid Service Valve 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. Failure to follow this warning will result in abrupt release of system charge and may result in personal injury and /or property damage. Important: Leak check and evacuation must be completed before opening the service valves. STEP 1 - Remove service valve cap. STEP 2 - Fully insert 3/16" hex wrench into the stem and back out counterclockwise until valve stem just touches the rolled edge (approximately five (5) turns.) STEP 3 - Replace the valve cap to prevent leaks. Tighten finger tight plus an additional 1/6 turn. Section 11. Electrical - Low Voltage 11.1 Low Voltage Maximum Wire Length Table 11.1 defines the maximum total length of low voltage wiring from the outdoor unit, to the indoor unit, and to the thermostat. Capes 9 Unit Side of Service Valve /3/16" Hex Wrench Rolled Edge to Il /Captivate Stem Table 11.1 Hex Headed Valve System 24 VOLTS WIRE SIZE MAX. WIRE LENGTH 18 AWG 150 Ft. 16 AWG 225 Ft. 14 AWG 300 Ft. 12 11-BC26D1-11 C-EN 11.2 Low Voltage Hook-up Diagrams With TEM 3, 4, 6, 8 Thermostat Air Handler Outdoor IUnit l 24 VAC HOT FAN -——-❑ 24 VAC Common 6/C — — — —� — Blue — — I � I �� SOV StSTAGET I i T -——- Y* -——— Y❑ HEATING 2nd STAGE �A� V V — — — — W 1 i white HEATGENCY— — Pink — X2 Black With TAM 4,5,7,9 Thermostat Air Handler Outdoor Unit 24 VAC HOT KI FAN KI - 24 VAC B/l. Common o� SOv COOL/HEAT 1st STAGE YI 9 MEN �E-. I -——- BIBe -——- i W1 --- w2 Pink Black • Units with pigtails require wirenuts for connections. • In AC systems for multiple stages of electric heat, jumper W1 and W2 together if comfort control has only one stage of heat. * Y2 for TEM6 2 Stage HP Thermostat AUX 1 AUX 1 AUX 1 AUX 2 AUX 2 AUX 2 INDOOR UNIT 24VAC HOT RC O---* COMMON RH BIC BIC • SOV 0 p0 • COOLING Y1 Y11Ylo • Y2 YIY2 FAN BK BK HEATING W1 W2 � ----• W1 ODT ODT ODT IRS RS1 RS1 OUTDOOR UNIT 0 0 11-BC26D1-11 C-EN 13 11.3 Defrost Control Defrost controls have a selectable termination tem- perature. As shipped, defrost will terminate at 47°F. 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. TEST —COMMON (Shorting to FRC_DFT causes the control to initiate Forced Defrost. Leaving this pin open results in the normal mode of operation.) 2. FRC_DFT = Forced Defrost (Short TEST_ COMMON to this pin for two (2) seconds to initiate a forced defrost. Remove the short after defrost initiates.) Defrost Control Checkout Normal operation requires: • Status LED on board flashing 1 time/second in standby or 2 times/second with a call for heating or cooling. Defrost Board Detail 7�l D5 i oa rk — Ll = o15 J3 C ' C C23L J1 1., o14R C O LJ„ U� T, p69 E R8 R3L uu C 33R55 J8 LJ • .R48 rn R3W C 120 O c6 -„, IIII011111111 R19n I mz, • uR5 Ul u L—J p] ' r� • �3, C �u� Ae.1111111111111C� �ugu �9e 21 1 �czsI • Ali[ ] .-_R65 N e�rue _2J e • �11 12UD22 ••�"•w`-."y-, - anxrte R67 _ R33 U C30 C9 �-�R _ u I -II Ir]C2] U3 n p�9 R72 Cnf n u • U=I p1 j' Tu61 R92 R]6=R21724 • r 7p]1i p8l rp [8] R79 L p2J R C3 O r L J8 [ ]R62 j ` A �C29 A L11 COIL T ° J2 o >PR2 e Rp: Q`L • ° rERnSSWT gig COIL T AMB T � 24V AC between R & B • 24V AC between Y, YO & B with unit operating • Defrost initiation when FRC_DFT pin is shorted to TEST —COMMON pin. J5 Test Pins If a defrost control problem is suspected, refer to the service information in control box. 14 11-BC26D1-11 C-EN Section 12. Electrical - High Voltage 12.1 High Voltage Power Supply 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 precau- tions when exposed to live electrical compo- nents could result in death or serious injury. The high voltage power supply must agree with the equipment nameplate. Power wiring must comply with national, state, and local codes. Follow instructions on unit wiring diagram located on the inside of the control box cover and in the Service Facts document included with the unit. 12.2 High Voltage Disconnect Switch Install a separate disconnect switch at the outdoor unit. For high voltage connections, flexible electri- cal conduit is recommended whenever vibra- tion transmission may create a noise problem within the structure. 12.3 High Voltage Ground Ground the outdoor unit per national, state, and local code requirements. 11-BC26D1-11 C-EN 15 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. 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 709F. 60 MIN. STEP 5 - Set system thermostat to ON. 16 11-BC26D1-11 C-EN Section 14. System Charge Adjustment 14.1 Temperature Measurements STEP 1 - Check the outdoor temperatures. Subcooling (in cooling mode) is the only recom- See Section 14.2 for mended method of charging above 552 F ambi- Outdoor ent outdoor temperature. See Section 14.2. Temperatures Above 552 F For outdoor temperatures below 552 F, see Sec- tion 14.3. See Section 14.3 for Note: It is important to return in the spring or Outdoor summer to accurately charge the system in the Temperatures cooling mode when outdoor ambient tempera- Below 55° F ture is above 552 F. For best results the indoor temperature should be kept between 70° F to 8W F. 14.2 Subcooling Charging in Cooling (Above 551 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. X 120° F 55° F X Outdoor Temp 1 X 550 F Outdoor Temp 2 iX— Indoor Temp 11-BC26D1-11 C-EN 17 STEP 2 - Determine the final subcooling value using total Line Length and Lift measured in STEP 1 and the charts below. For 018N - 060N Models: 1 1/2 Ton Heat Pump SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) 60 Add 3' w 50 Add 2' IZ 40 Add 1c of Subcooling w 30 z 25 z 20 ag 15 Use Design Subcool Value w V' 10 w � 10 20 25 30 40 60 TOTAL REFRIGERANT LINE LENGTH (FEET) 2 1/2 Ton Heat Pump SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) w 60 Add 4- LL 50 Add 3- 40 Add 2' of Subcooling w 30 Add 1' of Subcooling z 25 z 20 ¢15 Use Design Subcool Value w ALI c7 10 w01 oC 10 20 25 30 40 60 TOTAL REFRIGERANT LINE LENGTH (FEET) 3 1/2 Ton Heat Pump SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) w 60 Add 6- LL 50 Add 5' tZ 40 Add 3' of Subcooling w 30 Add 2- of Subcooling z 25 Add 1 o of Subcooling Z 20 ag 15 cw'3 10 Use Design Subcool Value w 10 20 25 30 40 60 TOTAL REFRIGERANT LINE LENGTH (FEET) 5 Ton Heat Pump SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) r' 60 Add 6' w 50 tZ 40 Add 5o of Subcooling w 30 Add 4- of Subcooling z 25 Z 20 Add 2' of Subcooling 'odd 3' of Subcooling ag 15 w 52 110 Design Add 1' of Subcooling w � 10 20 25 30 40 60 TOTAL REFRIGERANT LINE LENGTH (FEET) 2 Ton Heat Pump SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) Iff60 Add 4- w 50 F Add - tZ 40 Add 1- of Subcooling w 30 z 25 ¢z 20 aC 15 Use Design Subcool Value w c7 10 w 10 20 25 30 40 60 TOTAL REFRIGERANT LINE LENGTH (FEET) 3 Ton Heat Pump SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) B0 1 Add 5- 50 Add - tZ 40 Add 3' of Subcooling z 25 Add 1' of Subcooling Add 2' z 20 15 Use Design Subcool Value S2 10 w 0 10 20 25 30 40 60 TOTAL REFRIGERANT LINE LENGTH (FEET) 4 Ton Heat Pump Design Subcooling Value = ° F (from nameplate or Service Facts) Subcooling Correction = ° F Final Subcooling Value = ° F 18 11-BC26D1-11 C-EN For 018H - 060H Models: 1 1/2 Ton Heat Pump _ SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) 50 Add 1° 4° 40 Add 1 ° Add 2° w Z 30 ' 1° 25 < Use Design Subcooling 1° 0< 15 Add 1° � 10 LL w 20 30 40 50 60 70 80 90 100 110 120 130 140 150 LU TOTAL REFRIGERANT LINE LENGTH (FT) - [ includes lift] 2 1/2 Ton Heat Pump SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) 50 1° Add 2° Zi 40 Add 1 ° z 30 Add 1 ° J z 25 rUse Design Subcooling < 15 1° 0 10 LL 0 w 20 30 40 50 60 70 80 90 100 110 120 130 140 150 TOTAL REFRIGERANT LINE LENGTH (FT) - [ includes lift ] 3 1/2 Ton Heat Pump SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) F LL F 50 Add 4° LL Lu 40 Add 1 ° z 30 Add 1 ° Add 2° J z 25 Use Design Subcooling qa 15 Add 1° � 10 LL 0 Ir w 20 30 40 50 60 70 80 90 100 110 120 130 140 150 TOTAL REFRIGERANT LINE LENGTH (FT) - [ includes lift ] 5 Ton Heat Pump SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) F LL, __ o00000000000000000000000000000000000000000�0�0000000000000000000000000000000000000o�o��vo 2 Ton Heat Pump _ SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) 50 i 1° Add 2° ZI 40 i Add 1 ° z 30 Add 1 ° J z 25 , Use Design Subcooling < 15 2 10 LL 0 w 20 30 40 50 60 70 80 90 100 110 120 130 140 150 TOTAL REFRIGERANT LINE LENGTH (FT) - [ includes lift ] 3 Ton Heat Pump L CHARGING CHART CORRECTION. OR LINE LENGTH AN .01000011 i.� AN .................... ',� E 50 4° ZI 40 Add 10 Add 20 z 30 Add 1' J z 25 Use Design Subcooling 15 1° LU 10 LL 0 Ir w 20 30 40 50 60 70 80 90 100 110 120 130 140 150 TOTAL REFRIGERANT LINE LENGTH (FT) - [ includes lift ] 4 Ton Heat Pump SUBCOOL CHARGING CHART CORRECTIONS TABLE (FOR LINE LENGTH AND RISE) F LL 50 1° All 4° LL z 30 1 ° Add 1 ° Add 2° J z 25 Use Design Subcooling g 15 Add 1° LU 10 LL 0 of w 20 30 40 50 60 70 80 90 100 110 120 130 140 150 W TOTAL REFRIGERANT LINE LENGTH (FT) - [ includes lift ] Design Subcooling Value = 9 F (from nameplate or Service Facts) Subcooling Correction = ° F �\\, Final Subcooling Value = 0 F fl 20 130 140 150. (FT) -[includes lift] 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 mini- mum of 20 minutes to stabilize before accurate measurements can be made. 20 MIN. 11-BC26D1-11 C-EN 19 STEP 4 - Measure the liquid line temperature and pressure at the outdoor unit's service valve. Measured Liquid Line Temp = ° F Liquid Gage Pressure = PSIG Final Subcooling Value = ° F STEP 5 - Use the final subcooling vale ant temperature and pressure from S- determine the proper liquid gage pres Table 14.2. Example: Assume a 122 F Final Su value and liquid temp of 902 F. 1. Locate 12° F Final Subcooling in 2. Locate the Liquid Temperarature the left column. 3. The Liquid Gage Pressure shout, proximately 327 PSIG. (This is the the intersection of the Final Subcoc and the Liquid Temperature row. 20 11-BC26D1-11 C-EN 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. Stop adding refrigerant when liquid line temperature and Liquid Gage Pressure matches the charging chart Final Subcooling value. Recover refrigerant if the Liquid Gage Pres- sure is higher than the chart value. STEP 7 - Stabilize the system. 1. Wait 20 minutes for the system condi- tion to stabilize between adjustments. Note: When the Liquid Line Temperature and Gage Pressure approximately match the chart, the system is properly charged. 2. Remove gages. 3. Replace service port caps to prevent leaks. Tighten finger tight plus an ad- ditional 1/6 turn. STEP 8 - Verify typical performance. Refer to System Pressure Curves in the Service Facts to verify typical performance. �F2 0 MIN. (Example only - see Service Facts) ._ raiana�amnanm•�P ®I®II®I®IIII!ail II€€III€€II€ ®I il rr®rr M®m®.. ® ____.. iii=-- - 11-BC26D1-11 C-EN 21 STEP 9 - Record System Information for refer- ence. Record system pressures and temperatures after charging is complete. Outdoor model number = Measured Suction Line Temp = Measured Outdoor Ambient = ° F Liquid Gage Pressure = Measured Indoor Ambient = ° F Suction Gage Pressure = Measured Liquid Line Temp = ° F 14.3 Subcooling Charging Below 55° F Outdoor Temp. (In Heating Only) The Subcooling Charging method in cooling is not recommended below 552 F outdoor tem- perature. The only recommended method of charging at outdoor temperatures below 552 F is weighing in the charge in heating mode. STEP 1 - Determine additional charge. Note: The nameplate charge value represents the amount of refrigerant shipped in the outdoor unit and is compatible with 10 feet of AHRI rated refrigerant lines and the smallest AHRI rated coil. Using the method below, find the charge associ- ated with the additional length of tubing above 10 ft. and record it below. Calculating Charge Using the Weigh -In Method STEP 1 - Measure in feet the distance between the outdoor unit and the indoor unit. (Include the entire length of the line from the service valve to the IDU.) Subtract 10 ft from this entire length and record on line 1. STEP 2 - Enter the charge multiplier (0.6 oz/ft). Each linear foot of interconnecting tubing requires the addi- tion of 0.6 oz of refrigerant. STEP 3 - Multiply the total length of refrigerant tubing (Line 1) times the value on Step 2. Record the result on Line 3 of the Worksheet. STEP 4 - This is the amount of refrigerant to weigh-in prior to opening the service valves. °F PSIG PSIG Weigh -In Method can be used for the initial installation, or anytime a system charge is being replaced. Weigh -In Method can also be used when power is not available to the equipment site or operating conditions (indoor/outdoor temperatures) are not in range to verify with the subcooling charging method. 1. Total Line length (ft) —10 ft 2. Charge multiplier 3. Step 1 x Step 2 4. Refrigerant (oz) x 0.6 oz 22 11-BC26D1-11 C-EN STEP 2 - 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 mini- mum of 20 minutes to stabilize before accurate measurements can be made. STEP 3 - Check the liquid line temperature and liquid gage pressure to obtain a minimum of 102 subcooling in heating mode. Measured Liquid Line Temp = ° F Liquid Gage Pressure = PSIG STEP 4 - Add charge if a minimum of 102 sub - cooling is not obtained with the namplate charge plus additional charge previously added. STEP 5 - Return to site for adjustment. Important: Return in the spring or summer to accurately charge the system in the cooling mode with outdoor ambient above 551 F. 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 nec- essary so tubes do not rub against each other when the unit runs. Also be sure that wiring connections are tight and properly secured. CHECKOUTPROCEDURE After installation has been completed, it is recommended that the entire system be checked against the following list: 1. Leak check refrigerant lines ...................................... 2. Properly insulate suction lines and fittings ................. 3. Properly secure and isolate all refrigerant lines......... 4. Seal passages through masonry. If mortar is used, prevent mortar from coming into direct contact with copper tubing ........................ 5. Verify that all electrical connections are tight ............. 6. Observe outdoor fan during on cycle for clearance and smooth operation ................................................ [ ] 7. Be sure that indoor coil drain line drains freely. Pour water [ ] into drain pan................................................................ [ ] [ ] 8. Be sure that supply registers and return grilles are open and unobstructed.......................................................... [ l 9. Be sure that a return air filter is installed ...................... [ ] [ ] 10. Be sure that the correct airflow setting is used. [ ] (Indoor blower motor) ................................................... [ ] 11. Operate complete system in each mode to [ ] ensure safe operation ................................................... [ ] 11-BC26D1-11 C-EN 23 15.2 Troubleshooting SYSTEM FAULTS .• , CIRCUIT Head Pressure Too High Head Pressure Too Low Suction Pressure Too High Suction Pressure Too Low LiquidREFRIGERANT Refrig. FloodbackI.D. ■■■■■■■■■■■■■■■�■■©©■©�■■■■■■ Coil Frosting 0■■■■■■■■■■■■■■�■■■©©■■■■■■■■■ Compressor Runs Inadequate or No „ 0■■■■■■■■■■■■■©�■©©■■■©�©©©©■■ ©■■■■■■■■■■■■■©�■■©■■■©�©©■©■■ Compressor: 0,D. FanWon't Start 0��■■■■■©�©��■■■■■■■■■■■■■■■■■ Compressor But C.D.©■�©0©©©■■■■■�■■■■■■■■■■■■■■■■ ■�©�©©©■■■■■�■■■■■■■■■■■■■■■■ C.D. 0■�■0■■©■■■■■■■■■■■■■■■■■■■■■■ Compressor0■■■�©©©■■■■■�■■■■■■■■■■■■■■■■ Compressor Cycles on IOLI.■�©�©©©■■■■■�©��©■©©■©■■©■■■■ D:• 0��■■■■■©■©■©■■■■■■■■■■■■■■■■■ •, Unit t Initiate Defrost 0■■■■■■■■■■■■■■■■■■■■■■■■■■■■■ Defrost Terminateson - 0■■■■■■■■■■■■■■■■■■■■■■■■■■■■■ C - Cooling H - Heating P - Primary Causes S - Secondary Causes * - 3 Phase Only A*61"1 " S7imdwid,, HEATING & AIR CONDITIONING About American Standard Heating and Air Conditioning American Standard has been creating comfortable and affordable living environments for more than a century. For more information, please visit www.americanstandardair.com. C UL US LISTED The AHRI Certified mark indicates company participation in the AHRI Certification program. For verification of individual certified products, go to ah ridi rectory. org. The manufacturer has a policy of continuous data improvement and it reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices. 11-BC26D1-11C-EN 05Ju12022 Supersedes 11-BC26D1-11 B-EN (May 2022) © 2022 American Standard Heating and Air Conditioning