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Everwell CAC Service Manual

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Summary of Contents for Everwell CAC

  • Page 1 FAHC Service Manual...

  • Page 2: Part 1 General Information

    Part 1 General Information 1. Indoor and Outdoor Units ..............2 2. External Appearance ................2...

  • Page 3: Indoor And Outdoor Units

    1. Indoor and Outdoor Units Series Capacity Outdoor units Indoor units 15 SEER ON/OFF 2. External Appearance Indoor Unit Outdoor Unit...

  • Page 4: Table Of Contents

    Part 2 Engineering Data 1. Specifications ..................4 2. Dimensions ..................11 3. Installation Space Requirements ............. 14 4. Piping Diagrams ................16 5. Wiring Diagrams ................17 6. Capacity Tables ................. 21 7. Accessories ..................25...
  • Page 5 Units Model Outdoor power supply V/Ph/Hz 208/230/1/60 Capacity Btu/h 17500 22000 28000 Input 1550 2000 2370 Cooling EER2 Btu/(h·W) 11.5 11.2 11.5 SEER2 (AHRI Cer琀椀fied) Btu/(h·W) 14.3 14.3 14.3 Capacity Btu/h 17500 22000 26000 Hea琀椀ng HSPF2(AHRI Cer琀椀fied) Btu/(h·W) Max. input consump琀椀on 2250 3050 3300...
  • Page 6 Model Outdoor power supply V/Ph/Hz 208/230/1/60 Capacity Btu/h 33000 40000 45000 56000 Input 2780 3400 3770 4870 Cooling EER2 Btu/(h·W) 11.5 11.5 11.5 11.5 SEER2 (AHRI Btu/(h·W) 14.3 14.3 14.3 14.3 Cer琀椀fied) Capacity Btu/h 33000 40000 44000 53000 Hea琀椀ng HSPF2(AHRI Btu/(h·W) Cer琀椀fied) Max.
  • Page 7 1.2 Indoor Units Model Power supply V/Ph/Hz 208/230/1/60 Capacity Btu/h 17500 22000 28000 Cooling SEER2 Btu/(h·W) 14.3 14.3 14.3 Indoor external sta琀椀c pressure Thro琀琀le type Orifice Orifice Orifice Number of row 3(row)×2(piece) 4(row)×2(piece) 4(row)×2(piece) Tube pitch(a) x row pitch(b) 0.83×0.53 0.83×0.53 0.83×0.53 Fin spacing...
  • Page 8 Model Power supply V/Ph/Hz 208/230/1/60 Capacity Btu/h 33000 40000 45000 55500 Cooling SEER2 Btu/(h·W) 14.3 14.3 13.8/14.3 13.8/14.3 Indoor external sta琀椀c pressure Thro琀琀le type Orifice Orifice Orifice Orifice Number of row 4(row)×2(piece) 4(row)×2(piece) 4(row)×2(piece) 5(row)×2(piece) Tube pitch(a) x row 0.83×0.53 0.83×0.53 0.83×0.53 0.83×0.53...
  • Page 9 Model FAHC18HA15 FAHC24HA15 FAHC30HA15 FAHC36HA15 Power supply V/Ph/Hz 208/230/1/60 Capacity Btu/h 17500 22000 28000 33000 Cooling SEER2 Btu/(h·W) 14.3 14.3 14.3 14.3 Indoor external sta琀椀c pressure Thro琀琀le type Orifice Orifice Orifice Orifice Number of row Tube pitch(a) x row 0.83×0.53 0.83×0.53 0.83×0.53 0.83×0.53...

  • Page 10: Dimensions

    2. Dimensions 2.1 Outdoor Units Dimensions Model name “W” mm (in.) “D” mm (in.) “H” mm (in.) 600 (23-5/8) 600 (23-5/8) 635 (25) 740 (29-1/8) 740 (29-1/8) 635 (25) 740 (29-1/8) 740 (29-1/8) 835 (32-7/8)

  • Page 11: Indoor Units

    2.2 Indoor Units Supply Air High voltage Flanges provided connection for field installation 10-1/2 Low voltage connection Gas pipe connection (Sweat) Liquid pipe connection (Sweat) Auxiliary drain connection 3/4” Female pipe thread (NPT) Primary drain connection 3/4” Female pipe thread (NPT) Upflow unit shown;...
  • Page 12 Supply Air High voltage connection Vapor line connection 1-2/25"(7/8") dia knock outs copper (Sweat) (3/4"dia pipe) Liquid line connection Low voltage connection copper (Sweat) (3/8"dia pipe) High voltage connection High voltage connection 7/8"(1-3/8") dia knock outs 7/8"(1-3/8") dia knock outs Primary drain connection 3/4”...

  • Page 13: Installation Space Requirements

    3. Installation Space Requirements 3.1 Outdoor Units 3.2 Indoor Units Regular Air Handler: Horizontal posi琀椀on: Ver琀椀cal posi琀椀on:...
  • Page 14 Front Return Air Handler:...

  • Page 15: Piping Diagrams

    4. Piping Diagrams Cooling only models: Heat pump models:...

  • Page 16: Wiring Diagrams

    5. Wiring Diagrams 5.1 Outdoor Units Cooling only models 18K-60K: Heat pump models 18K-48K:...
  • Page 17 Heat pump models 60K:...
  • Page 18 5.2 Indoor Units Regular Air Handler: 18K, 24K: 30K, 36K, 42K, 48K, 60K:...
  • Page 19 Front Return Air Handler: 18K, 24K, 30K, 36K:...

  • Page 20: Capacity Tables

    6. Capacity Tables 6.1 Cooling Capacity Tables - Ori ce C onditions: 80 °F IDB , 67 °F IWB @ 580 CFM Outdoor Total Sensible Latent Total Tem. °F. Btu/h Btu/h Btu/h Watts 20909 14491 6417 1273 20371 14511 5861 1344 19816 14496...
  • Page 21 - Ori ce Conditions: 80 °F IDB , 67 °F IWB @ 1150CFM Outdoor Total Sensible Latent Total Tem. °F. Btu/h Btu/h Btu/h Watts 37813 26847 10966 2262 36925 26734 10191 2379 35982 26699 9283 2500 35023 26617 8406 2624 34059 26566 7493...
  • Page 22 - Ori ce Conditions: 80 °F IDB , 67 °F IWB @ Outdoor 1570CFM Total Sensible Latent Total Tem. °F. Btu/h Btu/h Btu/h Watts 63127 40907 22221 3906 61698 40782 20915 4114 59352 40656 18696 4335 58246 40655 17590 4561 57175 40594 16581...
  • Page 23 - Ori ce Conditions: 80 °F IDB , 67 °F IWB @ 805CFM Outdoor Total Sensible Latent Total Tem. °F. Btu/h Btu/h Btu/h Watts 27084 18742 8342 1636 26359 18557 7802 1720 25649 18442 7207 1809 24949 18337 6611 1900 24154 18336 5818...

  • Page 24: Accessories

    7. Accessories 7.1 Standard Accessories Items Quan琀椀ty Installa琀椀on manual Drain pipe Drain plug 7.2 Op琀椀onal Accessories Items Accessories Electric heater...

  • Page 25: Outdoor Unit Installation

    Part 3 Outdoor Unit Installation 1. Safety 27 2. Unit Location Considerations ............29 3. Unit Preparation ................31 4. Setting the Unit .................. 31 5. Refrigerant Line Considerations ............32 6. Refrigerant Line Routing ..............33 7. Refrigerant Line Brazing ..............34 8.

  • Page 26: Safety

    1. Safety Important - This document contains a wiring diagram and service informa琀椀on. This is customer property and is to remain with this unit. Please return to service informa琀椀on pack upon comple琀椀on of work. CAUTION This informa琀椀on is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience.
  • Page 27 WARNING SERVICE VALVES! Failure to follow this warning will result in abrupt release of system charge and may result in personal injury and/orproperty damage. Extreme cau琀椀on should be exercised when opening the Liquid Line Service valve. Turn valve stemcounterclockwise only un琀椀l the stem contacts the rolled edge. No torque is required. WARNING BRAZING REQUIRED! Failure to inspect lines or use proper service tools may result in equipment damage or personal injury.

  • Page 28: Unit Location Considerations

    2. Unit Location Considerations 2.1 Unit Dimensions and Loca琀椀on Restric琀椀ons When moun琀椀ng the outdoor unit on a roof, be sure the roof will support the unit’s weight. Properly selected isola琀椀on is recommended to prevent sound or vibra琀椀on transmission to the building structure. Ensure the top discharge area is unrestricted for at least 60 inches above the unit.

  • Page 29: Refrigerant Piping Limits

    2.2 Refrigerant Piping Limits Considering the allowable pipe length and height drop to determine the installa琀椀on posi琀椀on. Make sure the distance and height drop between indoor and outdoor unit not exceed the data in the following table. Max. length 昀琀(m) Max.

  • Page 30: Unit Preparation

    3. Unit Preparation Check for damage and report promptly to the carrier any damage found to the unit. The charge port can be used to check to be sure the refrigerant charge has been retained during shipment. 4. Setting the Unit When installing the unit on a support pad, such as a concrete slab, consider the following: The pad should be at least 1-2”...

  • Page 31: Refrigerant Line Considerations

    5. Refrigerant Line Considerations 5.1 Refrigerant Line and Service Valve Connec琀椀on Sizes Line Sizes Service Valve Connec琀椀on Sizes Suc琀椀on Line Liquid Line Model Suc琀椀on Line Liquid Line Connec琀椀on Connec琀椀on 18K/24K/30K/36K/42K 48K/60K 5.2 Refrigerant Line Length and Insula琀椀on Determine required line length. IMPORTANT: The Suc琀椀on Line must always be insulated.

  • Page 32: Refrigerant Line Routing

    6. Refrigerant Line Routing Important: Take precau琀椀ons to prevent noise within the building structure due to vibra琀椀on transmission from the refrigerant lines. Comply with Na琀椀onal, State, and Local Codes when isola琀椀ng line sets from joists, ra昀琀ers, walls, or other structural elements. For Example: When the refrigerant lines have to be fastened to floor joists or other framing in a structure, use isola琀椀on type •...

  • Page 33: Refrigerant Line Brazing

    7. Refrigerant Line Brazing Remove caps or plugs. Use a deburring tool to deburr the pipe ends. Clean both internal and external surfaces of the tubing using an emery cloth. Remove the pressure tap cap from both service valves. Purge the refrigerant lines and indoor coil with dry nitrogen. This pipe must have a thimble.
  • Page 34 Replace the pressure tap caps a昀琀er the service valves have cooled.

  • Page 35: Refrigerant Line Leakage Check

    8. Refrigerant Line Leakage Check Pressurize the refrigerant lines and evaporator coil to 150 PSIG using dry nitrogen. Check for leaks by using a soapy solu琀椀on or bubbles at each brazed loca琀椀on. 9. Vacuum Drying Elimina琀椀ng moisture in system to prevent the phenomena of ice-blockage and copper oxida琀椀on. Ice-blockage shall cause abnormal opera琀椀on of system, while copper oxide shall damage compressor.

  • Page 36: Service Valves

    10. Service Valves WARNING Extreme cau琀椀on should be exercised when opening the Liquid Line Service Valve. Turn counterclockwise un琀椀l 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.

  • Page 37: Electrical Wiring

    12. Electrical Wiring WARNING LIVE ELECTRICAL COMPONENTS! During installa琀椀on, tes琀椀ng, servicing, and troubleshoo琀椀ng of this product, it may be necessary to work with live electrical components. Failure to follow all electrical safety precau琀椀ons when exposed to live electrical components could result in death or serious injury.
  • Page 38 Part 4 Indoor Unit Installation 1. Safety ....................40 2. Applications ..................42 3. Electrical Wiring ................45 4. Airflow Performance ................. 47 5. Ductwork .................... 49 6. Refrigerant Connections ..............50 7. Air Filter (not factory-installed) ............52 8. Filter Installation Dimensions............53 9.

  • Page 39: Safety

    1. Safety Important - This is an a琀琀en琀椀on alert symbol. When you see this symbol on labels or in manuals, be alert to the poten琀椀al for personal injury. WARNING Disconnect all power to unit before installing or servicing. More than one disconnect switch may be required to de-energize the equipment.
  • Page 40 WARNING PROPOSITION 65: This appliance contains fiberglass insula琀椀on. Respirable par琀椀cles of fiberglass are known to State of California to cause cancer. All manufacturer products meet current federal OSHA Guidelines for safety. California Proposi琀椀on 65 warnings are required for certain products, which are not covered by the OSHA standards. California’s Proposi琀椀on 65 requires warnings for products sold in California that contain or produce any of over 600 listed chemicals known to the State of California to cause cancer or birth defects such as fiberglass insula琀椀on, lead in brass, and combus琀椀on products from natural gas.

  • Page 41: Applications

    2. Applications Regular Air Handler: 2.1 Ver琀椀cal Upflow Ver琀椀cal Upflow configura琀椀on is the factory set on all models. • If return air is to be ducted, install duct flush with floor. • Use fireproof resilient gasket 1/8 to 1/4 in. thick between the ducts, unit and floor. Set unit on floor over opening. IMPORTANT NOTE Torque applied to drain connec琀椀ons should not exceed 15.昀琀.lbs.
  • Page 42 2.3 Horizontal Horizontal right is the default factory configura琀椀on for the units. Conversion to Horizontal le昀琀: A ver琀椀cal upflow unit may be converted to horizontal le昀琀 by removing indoor coil assembly and reinstalling coil as shown for le昀琀 hand air supply. Rotate unit into the downflow posi琀椀on, with the coil compartment on top and the blower compartment on bo琀琀om.

  • Page 43: Frame Mount

    2.5 Frame Mount The air handler comes with 8 clearance holes (4 on each side). These holes are used to mount the air handler inside of a frame structure. When moun琀椀ng in this fashion, make sure that the wood screws are mounted from within the air handler and not from outside the unit in order to avoid damaging the coil.

  • Page 44: Electrical Wiring

    3. Electrical Wiring Field wiring must comply with the Na琀椀onal Electric Code and any applicable local ordinance. WARNING Disconnect all power to unit before installing or servicing. More than one disconnect switch may be required to de-energize the equipment. Hazardous voltage can cause severe personal injury or death. 3.1 Power Wiring It is important that proper electrical power is available for connec琀椀on to the unit model being installed.

  • Page 45: Electrical Data

    3.4 Electrical Data Circuit Maximum Series Model Voltage Speed Amps. circuit protector 3(A) 3(A) 3(A) Regular Air 6(A) Handler 6(A) 6(A) 208/230V 6(A) 3(A) 3(A) Front Return Air Handler 6(A) 6(A)

  • Page 46: Airflow Performance

    4. Airflow Performance Airflow performance data is based on cooling performance with a dry coil and no filter in place. Select performance table for appropriate unit size external sta琀椀c pressure applied to unit allows opera琀椀on within the minimum and maximum limits shown in table below for both cooling and electric heater opera琀椀on.
  • Page 47 Front Return Air Handler: External Sta琀椀c Pressure (in.w.c.) Blower Model Speeds 2-Factory Default 1005 1122 1096 1061 1036 1002 1239 1214 1182 1158 1127 1088 1051 3-Factory 1005 Default 1122 1096 1061 1036 1002 1239 1214 1182 1158 1127 1088 1051 1059 1009...

  • Page 48: Ductwork

    5. Ductwork Field ductwork must comply with the Na琀椀onal Fire Protec琀椀on Associa琀椀on NFPA 90A, NFPA 90B and any applicable local ordinance. WARNING Do not, under any circumstances, connect return ductwork to any other heat producing device such as fireplace insert, stove, etc.

  • Page 49: Refrigerant Connections

    6. Refrigerant Connections Keep the coil connec琀椀ons sealed un琀椀l refrigerant connec琀椀ons are made. See the Installa琀椀on Instruc琀椀ons for the outdoor unit for details on line sizing, tubing installa琀椀on, and charging informa琀椀on. Coil is shipped with “No charge”. Evacuate the system before charging with refrigerant. Install refrigerant tubing so that it does not block service access to the front of the unit.
  • Page 50 and line. Check to make sure drain pan is draining completely, no leaks are found in drain line fi琀�ngs, and water is draining from the termina琀椀on of the primary drain line. Front Return Air Handler The unit is supplied with primary and auxiliary condensate drains that have 3/4” NPT connec琀椀ons. Both drains must be trapped outside the unit and piped in accordance with applicable materials and building codes.

  • Page 51: Air Filter (Not Factory-Installed)

    7. Air Filter (not factory-installed) External filter or other means of filtra琀椀on is required. Units should be sized for a maximum of 300 feet/min. Air velocity or what is recommended for the type filter installed. Filter applica琀椀on and placement are cri琀椀cal to airflow, which may affect the hea琀椀ng and cooling system performance. Reduced airflow can shorten the life of the system’s major components, such as motor, limits, elements, heat relays, evaporator coil or compressor.

  • Page 52: Filter Installation Dimensions

    8. Filter Installation Dimensions Dimension data FILTER SIZE SERIES MODEL IN [mm] 18/24/30/36/42 18.1×21.4 [460×544] Regular Air Handler 48/60 20.5×23.8 [521×605] 18/24 15×19 [381×483] Front Return Air Handler 30/36 20×20 [508×508] NOTE: The thickness of the filter should be within 1"[25mm]. AIR FILTER REMOVAL / INSTALLATION Remove bolts manually, remove air filter recover;...

  • Page 53: Wiring Diagram

    9. Wiring Diagram To avoid the electrical shock, please connect the air condi琀椀oner with the ground lug. The main power plug in the air condi琀椀oner has been joined with the ground wiring, please don't change it freely. The power socket is used as the air condi琀椀oner specially. Don't pull the power wiring hard.

  • Page 54: Electrical Wiring Gauge

    10. Electrical Wiring Gauge NOTE: The cross-sec琀椀on areas of wires or lines should not be less than the corresponding ones listed in the table below; besides, if the power wires is quite long from the unit, please choose the windings with lager cross-sec琀椀on area to guarantee the normal power supply.

  • Page 55: Troubleshooting

    Part 5 Troubleshooting 1. Control logic description ..............57 2. Sensor ....................57 3. Exploded views ................. 57 4. Main PCB Ports ................. 61 5. Fault code table ................. 64 6. Troubleshooting ................65...

  • Page 56: Control Logic Description

    1. Control logic description The fixed speed system adopts the same control communica琀椀on command as that of common heat pump and air condi琀椀oning unit, it is the 24V control command. 2. Sensor T3 (Outdoor coil temperature) T4 (ambient temperature) T5 (compressor discharge temperature) 3.
  • Page 57 Heat pump outdoor unit: Part Name Quan琀椀ty Part Name Quan琀椀ty Top air outlet grille Fan capacitor Fan motor Brass binding post Axial-flow fan Ambient temperature sensor Top cover Upper side panel Right side panel 4-way valve assembly Condenser assembly Gas return pipe assembly Condenser component Lower side panel Shunt components...
  • Page 58 Regular Air Handler: Part Name Quan琀椀ty Part Name Quan琀椀ty Base pan co琀琀on s琀椀cking Connec琀椀ng plate assembly Drain pan support plate co琀琀on Evaporator water baffle 3 s琀椀cking assembly Evaporator gas collector pipe Wind wheel fixing plate assembly Le昀琀 side panel of air duct Evaporator shunt pipe assembly Right side panel of air duct Evaporator connec琀椀ng plate...
  • Page 59 Front Return Air Handler: Part Name Quan琀椀ty Part Name Quan琀椀ty Volute fixing plate co琀琀on Electric control cover co琀琀on s琀椀cking assembly s琀椀cking assembly Upper side panel co琀琀on s琀椀cking Air duct panel assembly Sealing plate co琀琀on s琀椀cking Wind wheel volute assembly Lower reinforcement plate Evaporator Lower side panel co琀琀on s琀椀cking Motor clamp...

  • Page 60: Main Pcb Ports

    4. Main PCB Ports For 18K-48K heat pump models: Content Content Power (L1) 24VAC common AC fan motor T4 temperature sensor Cranksha昀琀 hea琀椀ng belt T3 temperature sensor 4-way valve coil T5 temperature sensor Compressor High pressure switch Defrost signal Low pressure switch 24V control port...
  • Page 61 For 60K heat pump model: Content Content Power (L2) 24VAC power DC fan motor Power (L2) Temperature sensor group Cranksha昀琀 hea琀椀ng belt High pressure switch 4-way valve coil Low pressure switch Compressor 24V control port Power (L1)
  • Page 62 For indoor units: Content Content Power 24VAC power E-heater Reserved 24V control port Reserved 24VAC common ECM fan motor 24VAC common AC fan motor...

  • Page 63: Fault Code Table

    5. Fault code table Dispay Descrip琀椀on Green light flashes slowly No Fault: Normal standby Green light flashes Green light normally on Normal running Red light off Green light flashes twice every 8 seconds (T3) Temperature sensor fault Green light flashes 9 琀椀mes every 8 seconds (T4) Temperature sensor fault Green light flashes 8 琀椀mes every 8 seconds (T5) Temperature sensor fault...

  • Page 64: Troubleshooting

    6. Troubleshooting (T3) Temperature sensor fault: (T4) Temperature sensor fault:...
  • Page 65 (T5) Temperature sensor fault: Low pressure fault:...
  • Page 66 High pressure fault: (T3) High temperature protec琀椀on:...
  • Page 67 (T5) High exhaust temperature protec琀椀on: DC fan not connected fault: DC fan motor fault Error Check whether the fan motor Connect the terminal well terminal connection is loose Error Check whether outdoor unit is Remove impurities around sheltered outdoor unit Check whether there is Error Check whether wiring is correct,...

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