Haier GE NS22HM Installation Instructions Manual
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Haier GE NS22HM Installation Instructions Manual

Variable capacity heat pump
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INSTALLATION INSTRUCTIONS
NS22HM
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.
GE Appliances
A Haier Company
Appliance Park
Louisville, KY 40225
508311G01 / 31-5000754
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
Outdoor Unitary Control.............................................18
Unit Operation ...........................................................20
Start-Up .....................................................................20
Maintenance ..............................................................23
Homeowner Information ............................................23
Start-Up and Performance Checklist .........................26
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.
*P508311G01*
Issue 2250
WARNING
(P) 508311G01
Page 1 of 26

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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. GE Appliances *P508311G01* A Haier Company Appliance Park (P) 508311G01 Louisville, KY 40225 508311G01 / 31-5000754 Issue 2250...

  • 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 If conditions or local codes require the unit be attached to pad or mounting frame, tie down bolts should be used and IMPORTANT secured to unit base pan. Exhaust vents from dryers, water heaters and furnaces Elevate Unit should be directed away from the outdoor unit. Prolonged exposure to exhaust gases and the chemicals contained within them may cause condensation to form CAUTION...

  • 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...

  • Page 14: Electrical - Circuit Sizing And Wire Routing

    Electrical - Circuit Sizing and Wire Routing WARNING In the U.S.A., wiring must conform with current local codes Electrical Shock Hazard! and the current National Electric Code (NEC). In Canada, Can cause injury or death. Unit must be wiring must conform with current local codes and the properly grounded in accordance with current Canadian Electrical Code (CEC).
  • Page 15 Qty. of NS22HM Terminal Field Wiring Thermostat Type Indoor Unit Type Wires to Unit Operation Strip Connections Diagram Unit Conventional Any Furnace or Full Variable Capacity Operation 24VAC 2-Stage Air Handler (non- R, C, W1, O, Y1, Y2 Controlled by NS22HM Unitary Figure 10 Heat Pump communicating)
  • Page 16 OUTDOOR UNIT CONNECT CONDUIT TO CUTOUT AND ROUTE HIGH CONNECTS TO VOLTAGE WIRING (2) RAST 6-PIN CONNECTORS LOW VOLTAGE MAKE-UP BOX GROMMET AND CABLE TIE ROUTE CONTROL WIRING THROUGH USE WATERTIGHT GROMMET AND CONDUIT FOR HIGH SECURE WITH VOLTAGE CABLE TIE Figure 8.
  • Page 17 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 HEAT PUMP OUTDOOR UNIT VARIABLE SPEED...

  • Page 18: Outdoor Unitary Control

    Outdoor Unitary Control Jumpers and Terminals 7 SEGMENT DISPLAY CHARGE MODE JUMPER (CHRG MODE) CHARGE MODE AND OPERATION MODE JUMPER DETAIL OPERATION MODE JUMPER PUSH BUTTON RAST TERMINALS FOR THERMOSTAT WIRING CONNECTION Figure 11. 7-Segment Display and Push Button Example: Information labels concerning...
  • Page 19 Heating Operation Mode Jumper The compressor and outdoor fan motor will begin to ramp up and reach 100% design capacity within 3 minutes. They The Heating Operation Mode Jumper is only used on will continue to operate at 100% design capacity for the applications installed with a conventional 24VAC heat duration of charge mode.

  • Page 20: Unit Operation

    Unit Operation Start-Up NS22HM Unit Operation with a Conventional CAUTION 24VAC 2-Stage Heat Pump Thermostat If unit is equipped with a crankcase heater, it should When the NS22HM unit is installed with a conventional 24VAC 2-stage thermostat, a Y1 first stage heating or be energized 24 hours before unit start-up to prevent cooling demand will initiate heating or cooling operation compressor damage as a result of slugging.
  • Page 21 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 22 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.

  • Page 23: 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 24 • 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 25 Figure 15. Wiring Diagram 508311G01 / 31-5000754 Issue 2250 Page 25 of 26...

  • Page 26: 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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