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INSTALLATION INSTRUCTIONS
4SHP22LX
This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in manuals, be alert to
the potential for personal injury or death.
Installation and servicing of air conditioning equipment
can be hazardous due to internal refrigerant pressure
and live electrical components. Only trained and
qualified service personnel should install or service
this equipment. Installation and service performed by
unqualified persons can result in property damage,
personal injury, or death.
ELECTRICAL SHOCK HAZARD!
Risk of electrical shock. Disconnect all
remote power supplies before installing
or servicing any portion of the system.
Failure to disconnect power supplies
can result in property damage, personal
injury, or death.
IMPORTANT
The Clean Air Act of 1990 bans the intentional venting
of refrigerant (CFCs, HCFCs and HFCs) as of July
1, 1992. Approved methods of recovery, recycling or
reclaiming must be followed. Fines and/or incarceration
may be levied for noncompliance.
Manufactured By
Allied Air Enterprises LLC
A Lennox International, Inc. Company
215 Metropolitan Drive
West Columbia, SC 29170
508311-01
This manual must be left with the homeowner for future reference.
WARNING
WARNING
Variable Capacity Heat Pump
Table of Contents
Application ...................................................................1
General ........................................................................2
Installation ...................................................................2
Refrigerant Piping ........................................................4
Electrical - Circuit Sizing and Wire Routing ...............14
Outdoor Unitary Control.............................................19
Unit Operation ...........................................................21
Start-Up .....................................................................21
Maintenance ..............................................................24
Homeowner Information ............................................24
Start-Up and Performance Checklist .........................27
Sharp metal edges can cause injury. When installing
the unit, use care to avoid sharp edges.
Application
These units are designed for use in residential and light
commercial type buildings. Units should be installed with
approved indoor matches listed in the Air-Conditioning,
Heating and Refrigeration Institute (AHRI) Directory of
Certified Products. Refer to http://www.ahridirectory.org.
*P508311-01*
Issue 2243
WARNING
(P) 508311-01
Page 1 of 27
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Summary of Contents for Allied 4SHP22LX
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Page 1: Table Of Contents
Heating and Refrigeration Institute (AHRI) Directory of reclaiming must be followed. Fines and/or incarceration Certified Products. Refer to http://www.ahridirectory.org. may be levied for noncompliance. Manufactured By *P508311-01* Allied Air Enterprises LLC A Lennox International, Inc. Company 215 Metropolitan Drive (P) 508311-01 West Columbia, SC 29170 508311-01... -
Page 2: General
Handle refrigerant with caution; refer to proper MSDS General from refrigerant supplier. Use care when lifting, avoid contact with sharp edges. Read this entire instruction manual, as well as the instructions supplied in separate equipment, before Installation starting the installation. Observe and follow all warnings, cautions, instructional labels, and tags. - Page 3 TXV. See Refrigerant Piping - Refer to Table 1 for installation clearances. Typical Existing Expansion Valve Removal Procedure for details of changing the piston or TXV. The 4SHP22LX Location Minimum Clearance models are only rated with TXV on the indoor coil.
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Page 4: Refrigerant Piping
DO LOCATE THE UNIT: • Ensure that tubing insulation is pliable and completely surrounds vapor tube. • With proper clearances on sides and top of unit It is important that no tubing be cut or seals broken until you • On a solid, level foundation or pad (unit must be level are ready to actually make connections to the evaporator to within ±... - Page 5 • Maximum linear (actual) length = 150 feet. • Maximum linear liquid lift = 60 feet. WARNING NOTE: Maximum lifts are dependent on total length, Polyvinyl ether (PVE) oils used with HFC-410A number of elbows, etc. that contribute to total pressure refrigerant absorb moisture very quickly.
- Page 6 Valve Size Connections Recommended Line Sets Tonnage * Liquid Line Suction Line Line Set Length 3/4” (19mm) 30’ (9.1m) 40’ (12.2m) 3/8” (10mm) 7/8” (22mm) 50’ (15.2m) 1-1/8” (29mm) ** Field-fabricated * Applicable to all minor revision numbers unless otherwise specified. ** Some applications may require a field-provided 1-1/8”...
- Page 7 Typical Existing Fixed Orifice Removal 1. On fully cased coils, remove the coil access and plumbing panels. Procedure Remove any shipping clamps from the liquid line and DISTRIBUTOR TUBES distributor assembly. LIQUID LINE ORIFICE HOUSING Disconnect the equalizer line from the fitting on the vapor line.
- Page 8 Flushing Line Sets If the unit will be installed in an existing system that uses an indoor unit or line sets charged with R-22 refrigerant, installer must perform the following flushing procedure. NOTE: Existing system components (including line set and indoor coil) must be an AHRI match with the unit in order to fulfill unit warranty requirements.
- Page 9 Refrigerant Piping - Install Indoor Expansion Valve This outdoor unit is designed for use in systems that include a heat pump expansion valve metering device at the indoor coil. See the Product Specifications for approved expansion valve kit match-ups and application information. The expansion valve unit can be installed internal or external to the indoor coil.
- Page 10 Refrigerant Piping - Brazing Procedures CAP AND CORE REMOVAL CUT AND DEBUR Cut ends of the refrigerant lines square (free from nicks or dents) Remove service cap and core from and debur the ends. The pipe must remain round. Do not crimp end both the vapor and liquid line service of the line.
- Page 11 WRAP SERVICE VALVES To help protect service valve seals during brazing, wrap water-saturated cloths around service valve bodies and copper tube stubs. Use additional water-saturated cloths underneath the valve body to protect the base paint. FLOW NITROGEN Flow regulated nitrogen (at 1 to 2 psig) through the refrigeration gauge set into the valve stem port connection on the liquid service valve and out of the vapor valve stem port.
- Page 12 Leak Test and Evacuation LEAK TEST HIGH MANIFOLD GAUGE SET OUTDOOR UNIT TO VAPOR SERVICE VALVE NOTE - Position canister to deliver liquid refrigerant. NITROGEN HFC-410A CONNECT GAUGE SET A - Connect the high pressure hose of an HFC-410A manifold gauge set to the vapor valve service port. NOTE - Normally, the high pressure hose is connected to the liquid line port.
- Page 13 EVACUATION HIGH CONNECT GAUGE SET NOTE - Remove cores from service valves (if not already done). A - Connect low side of manifold gauge set with 1/4 SAE in-line tee to vapor line service valve B - Connect high side of manifold gauge set to OUTDOOR MANIFOLD liquid line service valve...
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Page 14: Electrical - Circuit Sizing And Wire Routing
Wi- opening access panel. Unit may have Fi accessibility and system operation parameters. Refer to multiple power supplies. the 4SHP22LX field wiring diagram for a Comfort Sync A3 communicating thermostat. Conventional 24VAC Non-Communicating Thermostat WARNING... - Page 15 (Jumper Y1 to Y2) Thermostat (non- communicating) Control Using Suction Pressure communicating) Table 6. 4SHP22LX Thermostat Control Options Size Circuit and Install Service Disconnect Install Thermostat Switch Install room thermostat (ordered separately) on an inside wall approximately in the center of the conditioned area Refer to the unit nameplate for minimum circuit ampacity, and 5 feet (1.5m) from the floor.
- Page 16 Connect the 208/230 high voltage power supply from the installed grommet installed in electrical inlet. disconnect to the 4SHP22LX contactor as shown. Connect the ground wire from the power supply to the unit ground Conventional 24VAC Non-Communicating Thermostat lug connection.
- Page 17 PROVIDED RAST 6-PIN CONNECTOR INDOOR CONTROL Indoor Control Single Wire To C Terminal Single Wire To C Terminal Unused Wires Unused Wires Figure 9. 4SHP22LX with Comfort Sync A3 Communicating Thermostat – Field Wiring 508311-01 Issue 2243 Page 17 of 27...
- Page 18 O.D. SENSOR O.D. SENSOR OPTIONAL OPTIONAL ACC2 ACC2 ACC1 ACC1 RAST 6-PIN RAST 6-PIN CONNECTOR CONNECTOR RAST 6-PIN RAST 6-PIN CONNECTOR CONNECTOR VARIABLE CAPACITY TWO STAGE / CONVENTIONAL 24VAC VARIABLE CAPACITY TWO STAGE / CONVENTIONAL 24VAC OUTDOOR UNIT VARIABLE SPEED NON-COMMUNICATING OUTDOOR UNIT VARIABLE SPEED...
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Page 19: Outdoor Unitary Control
Pressure (LPxxx), Liquid Temp (Ltxx.x) and Subcooling Charge Mode Jumper (SCxx.x) will be scrolled on the 7-segment display. To initiate the 4SHP22LX Charge Mode function, install Example: the jumper across the two Charge Mode Pins (CHRG MODE) on the outdoor control. The Charge Mode can be... - Page 20 Charge Mode Pins after Heating Operation Mode Jumper providing a heating compressor demand to the 4SHP22LX The Heating Operation Mode Jumper is only used on without an “O” reversing valve signal to initiate the Charge applications installed with a conventional 24VAC non- Mode.
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Page 21: Unit Operation
CAUTION A3 Communicating Thermostat If unit is equipped with a crankcase heater, it should When the 4SHP22LX unit is installed with a Comfort Sync A3 Communicating Thermostat and Comfort Sync-enabled be energized 24 hours before unit start-up to prevent indoor unit, the unit capacity will be controlled in the compressor damage as a result of slugging. - Page 22 Fastener Torque IMPORTANT Valve Stems 4 in. lbs. Stem Caps 8 ft. lbs. Mineral oils are not compatible with R-410A. If oil must be added, it must be a polyolester oil. Service Port Caps 8 ft. lbs. Sheet Metal Screws 16 in.
- Page 23 To Access the Schrader Port: Remove the service port cap with an adjustable wrench. Connect gauge to the service port. When testing is completed, replace service port cap. Tighten finger tight, then an additional 1/6 turn. To Open Liquid or Suction Line Service Valve: Remove stem cap with an adjustable wrench.
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Page 24: Maintenance
Periodically, debris should be brushed from the condenser Maintenance coils. Use a soft bristle brush with light pressure only. DO NOT damage or bend condenser coil fins. Damaged or bent fins may affect unit operation. Regular Maintenance Requirements Your system should be regularly inspected by a qualified service technician. - Page 25 • Do not be alarmed if you notice frost on the outdoor coil Indicating Light in the winter months. Frost may develop on the outdoor Most heat pump thermostats have an amber light coil during the heating cycle when temperatures are which indicates when the heat pump is operating in the below 45°F.
- Page 26 Figure 16. Wiring Diagram Page 26 of 27 Issue 2243 508311-01...
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Page 27: Start-Up And Performance Checklist
Start-Up and Performance Checklist Customer: _____________________________________ Address: _______________________________________ Indoor Unit Model: _______________________________ Serial: _________________________________________ Outdoor Unit Model: ______________________________ Serial: _________________________________________ Notes: __________________________________________________________________________________________ Start-Up Checks Refrigerant Type: _____________________ Rated Load Amps: ____________________ Actual Amps: ______ Rated Volts: _______ Actual Volts: ________ Condenser Fan Full Load Amps: _________ Actual Amps: ______ Cooling Mode Suction Pressure: ____________________ Liquid Pressure: _________...
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