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INSTALLATION INSTRUCTIONS
NS18AT
THIS MANUAL MUST BE LEFT WITH THE
HOMEOWNER FOR FUTURE REFERENCE
General
This NS18AT outdoor air conditioner with all-aluminum coil
is designed for use with HFC-410A refrigerant only. This
unit must be installed with an approved indoor air handler
or coil.
These instructions are intended as a general guide and do
not supersede local codes in any way. Consult authorities
having jurisdiction before installation.
STEP 1 – SETTING THE UNIT – Clearances
See
NOTES
NOTICE: Specific applications may require adjustment of the listed installation clearances to provide protection for
the unit from physical damage or to avoid conditions which limit operating efficiency. (Example: Clearances may
have to be increased to prevent snow or ice from falling on the top of the unit. Additional clearances may also be
required to prevent air recirculation when the unit is installed under a deck or in another tight space.)
GE Appliances
A Haier Company
Appliance Park
Louisville, KY 40225
508277-01G / 31-5000716
See NOTES
See
NOTES
CONTROL
See NOTES
BOX
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, personal
injury or loss of life. Installation and service must be
performed by a licensed professional HVAC installer or
equivalent, or service agency.
As with any mechanical equipment, contact with sharp
sheet metal edges can result in personal injury. Take
care while handling this equipment and wear gloves and
protective clothing.
IMPORTANT: Special procedures are required for
cleaning the all-aluminum coil in this unit. See page 16 in
this instruction for information.
NOTES -
Service clearance of 30 in. (762 mm) must be maintained on one of
the sides adjacent to the control box.
Clearance to one of the other three sides must be 36 in. (914 mm).
Clearance to one of the remaining two sides may be 12 in. (305
mm) and the final side may be 6 in. (152 mm).
A clearance of 24 in. (610 mm) must be maintained between two units.
48 in. (1219 mm) clearance required on top of unit.
FIGURE 1
*P508277-01G*
Issue 2227
Split Air Conditioning
2 Stage System
WARNING
CAUTION
(P) 508277-01G
Page 1 of 17
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Related Manuals for Haier GE NS18A24TA4
Summary of Contents for Haier GE NS18A24TA4
- Page 1 Additional clearances may also be required to prevent air recirculation when the unit is installed under a deck or in another tight space.) FIGURE 1 *P508277-01G* GE Appliances A Haier Company Appliance Park Louisville, KY 40225 (P) 508277-01G 508277-01G / 31-5000716...
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Page 2: Slab Mounting
IMPORTANT UNIT DIMENSIONS - INCHES (MM) Exhaust vents from dryers, water heaters and furnaces should be directed away from the outdoor unit. Prolonged exposure to exhaust gases and the chemicals contained within them may cause condensation to form on the steel cabinet and other metal components of the outdoor unit. - Page 3 IMPORTANT WARNING If this unit is being matched with an approved line set Fire, Explosion and Personal Safety hazard. or indoor unit coil that was previously charged with Failure to follow this warning could result in mineral oil, or if it is being matched with a coil which damage, personal injury or death.
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Page 4: Installation
LINE SET IMPORTANT — Refrigerant lines must not contact structure. INSTALLATION REFRIGERANT LINE SET — INSTALLING Line Set Isolation - The following illustrations are VERTICAL RUNS (NEW CONSTRUCTION SHOWN) examples of proper refrigerant line set isolation: NOTE - Insulate liquid line when it is routed through areas where the surrounding ambient temperature could become higher than the REFRIGERANT LINE SET —... - Page 5 STEP 2 – REFRIGERANT PIPING – Removing Existing Indoor Metering Device TYPICAL EXISTING FIXED ORIFICE TYPICAL EXISTING EXPANSION VALVE REMOVAL REMOVAL PROCEDURE PROCEDURE (UNCASED COIL SHOWN) (UNCASED COIL SHOWN) STUB END TWO-PIECE PATCH PLATE LIQUID LINE CHECK DISTRIBUTOR TUBES (UNCASED COIL ONLY) ORIFICE EXPANSION LIQUID LINE ORIFICE HOUSING...
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Page 6: Cap And Core Removal
STEP 2 – 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 7: Braze Line Set
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 8 STEP 2 – REFRIGERANT PIPING – Install Indoor Expansion Valve This outdoor unit is designed for use in systems that use either a fixed orifice (RFC) (included with outdoor unit), or expansion valve metering device (purchased separately) at the indoor coil. The expansion valve unit can be installed internal or external to the indoor coil.
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Page 9: Step 3 - Leak Test And Evacuation
STEP 3 – 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 10 STEP 3 – LEAK TEST AND EVACUATION (Continued) 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...
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Page 11: Electrostatic Discharge
STEP 4 – ELECTRICAL – Circuit Sizing and Wire Routing In the U.S.A., wiring must conform with current local codes WARNING and the current National Electric Code (NEC). In Canada, Fire Hazard. Use of aluminum wire with this product may wiring must conform with current local codes and the current Canadian Electrical Code (CEC). -
Page 12: Unit Low Voltage Connections
UNIT LOW VOLTAGE CONNECTIONS HIGH VOLTAGE FIELD WIRING FACTORY WIRING LOW VOLTAGE (24V) FIELD WIRING WIRE NUTS WIRE RUN LENGTH AWG# INSULATION TYPE LESS THAN 100' (30 METERS) TEMPERATURE RATING MORE THAN 100' (30 METERS) 35ºC MINIMUM. Run 24VAC control wires through cutout with grommet. Run 24VAC control wires through wire tie. - Page 13 K1-1 GROUND START COMPRESSOR CAPACITOR CONTACTOR COMPRESSOR CONTACTOR POTENTIAL OUTDOOR FAN RELAY (LEADED) EQUIPMENT ORANGE-RUN (OPTIONAL) GROUND BLACK-COMMON PURPLE- DUAL CAPACITOR CAPACITOR EC MOTOR CONNECTION S87 LOW (NS18A60TA4) PRESSURE COMPRESSOR SWITCH HIGH NOTE- PRESSURE FOR USE WITH COPPER CONDUCTORS SWITCH ONLY.
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Page 14: Step 5 - Unit Start-Up
Using Manifold Gauge Set STEP 5 – UNIT START-UP When checking the system charge, only use a manifold gauge set that features low loss anti-blow back fittings. IMPORTANT Manifold gauge set used with HFC-410A refrigerant If unit is equipped with a crankcase heater, it should systems must be capable of handling the higher system be energized 24 hours before unit start-up to prevent operating pressures. - Page 15 Low Pressure Switch ACCESS SERVICE PORT This unit is equipped with a low pressure switch which A service port cap protects the service port core from contamination and serves as the primary leak seal. is located on the compressor suction line. The SPST, 1 - Remove service port cap with an appropriately sized wrench.
- Page 16 3 - Inspect base pan drains for debris and clean as IMPORTANT necessary. Sprinklers and soaker hoses should not be installed 4 - Inspect the condition of refrigerant piping and where they could cause prolonged exposure to the confirm that pipes are not rubbing copper-to- outdoor unit by treated water.
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Page 17: Start Up Checks
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: Supply Air Temperature: Ambient Temperature: Return Air: Temperature:...