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508296-G01 / 31-5000753

Issue 2231

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: _________

System Refrigerant Charge (Refer to manufacturer’s information on unit or installation instructions for required subcooling 

and approach temperatures.)

Subcooling:

A - B = Subcooling

Saturated Condensing Temperature (A)

minus Outdoor Air Temperature (B)

Approach:

A - B = Approach

Liquid Line Temperature (A)

minus Outdoor Air Temperature (B)

Indoor Coil Temerpature Drop (18 to 22°F):

A - B = Coil Temp Drop

Return Air Temperature (A)

minus Supply Air Temperature (B)

Summary of Contents for GE NS23AMA

Page 1: ...ry When installing the unit use care to avoid sharp edges WARNING The Clean Air Act of 1990 bans the intentional venting of refrigerant CFCs HCFCs and HFCs as of July 1 1992 Approved methods of recove...

Page 2: ...te unit away from windows patios decks etc where unit operation sounds may disturb customer Leave some slack between structure and unit to absorb vibration Place a sound absorbing material such as Iso...

Page 3: ...CAUTION Elevate unit per local climate and code requirements to provide clearance above estimated snowfall level and ensure adequate drainage of unit Use snow stand in areas where prolonged freezing t...

Page 4: ...Piping Guidelines DO NOT LOCATE THE UNIT On brick concrete blocks or unstable surfaces Near clothes dryer exhaust vents Near sleeping area or near windows Under eaves where water snow or ice can fall...

Page 5: ...ssure in system is raised above 40 psig DO NOT REPLACE COMPRESSOR IMPORTANT The NS23AMA is a variable capacity cooling system utilizing variable speed compressor technology With the variable speed com...

Page 6: ...0 7 8 5 8 36 3 4 48 7 8 60 Table 4 Line Set Guidelines 51 to 150 Linear Feet in Length Tonnage Line SIze Total Linear Length ft 25 50 75 100 125 150 24 5 16 25 50 55 48 40 33 Max Elevation ft 3 8 25 5...

Page 7: ...NUT Figure 5 Remove Expansion Valve Uncased Coil Shown 1 On fully cased coils remove the coil access and plumbing panels 2 Remove any shipping clamps from the liquid line and distributor assembly 3 Di...

Page 8: ...ulator that can control the pressure down to 1 or 2 psig 6 9 to 13 8 kPa WARNING Refrigerant must be reclaimed in accordance with national and local codes WARNING 1 Set the recovery machine for liquid...

Page 9: ...ulb insulation is required if mounted external to the coil casing sensing bulb installation for bulb positioning STUB END TEFLON RING LIQUID LINE ASSEMBLY WITH BRASS NUT DISTRIBUTOR ASSEMBLY 3 Install...

Page 10: ...main round Do not crimp end of the line Remove service cap and core from both the vapor and liquid line service ports 1 2 LIQUID LINE SERVICE VALVE SERVICE PORT CORE SERVICE PORT CAP SERVICE PORT CORE...

Page 11: ...E VALVES POINT FLAME AWAY FROM SERVICE VALVE PREPARATION FOR NEXT STEP 7 WRAP SERVICE VALVES To help protect service valve seals during brazing wrap water saturated cloths around service valve bodies...

Page 12: ...side of the manifold gauge set in order to pressurize the line set and the indoor unit E After a few minutes open one of the service valve ports and verify that the refrigerant added to the system ea...

Page 13: ...r liquid refrigerant Open the manifold gauge valve 1 to 2 psig in order to release the vacuum in the line set and indoor unit G Perform the following Close manifold gauge valves Shut off HFC 410A cyli...

Page 14: ...oor unit Note that the published performance data is based upon the use of a two stage thermostat Refer to the NS23AMA field wiring diagram for a conventional 24VAC single stage thermostat NS23AMA Low...

Page 15: ...the floor It should not be installed on an outside wall or where it can be affected by sunlight or drafts THERMOSTAT 5 FEET 1 5M Figure 8 NOTE 24VAC Class II circuit connections are made in the contr...

Page 16: ...tion Type Less than 100 30m 18 Temperature Rating 35 C Minimum More than 100 30m 16 Table 7 Conventional 24VAC Thermostat Wiring Route High Voltage and Ground Wires Any excess high voltage field wirin...

Page 17: ...G DS W2 Y2 Y2 O D SENSOR OPTIONAL R2 FOR SINGLE STAGE OPERATION INSTALL A JUMPER BETWEEN Y1 TO Y2 ON THE OUTDOOR UNIT TERMINAL STRIP Figure 10 Conventional 24VAC Cooling Thermostat Wiring Single Stage...

Page 18: ...cooling blower demand must also be provided to initiate blower operation on the cooling speed on the indoor unit The compressor and outdoor fan motor will operate at 100 capacity To exit the charging...

Page 19: ...l will begin to ramp up the compressor capacity until maximum capacity is achieved The NS23AMA unit will cycle off once the thermostat demand is satisfied Start Up If unit is equipped with a crankcase...

Page 20: ...P ANGLE TYPE SERVICE VALVE FRONT SEATED CLOSED STEM CAP VALVE STEM SHOWN OPEN INSERT HEX WRENCH HERE ANGLE TYPE SERVICE VALVE BACK SEATED OPENED 1 Remove stem cap with an appropriately sized wrench 2...

Page 21: ...vel The system should be inspected and serviced before each cooling season by a licensed professional HVAC service technician or equivalent Homeowner Maintenance The following maintenance may be perfo...

Page 22: ...ill check the refrigerant charge per the charging sticker information on the outdoor unit 2 Verify that system total static pressure and airflow settings are within specific operating parameters 3 Ver...

Page 23: ...ENT PROTECTION SIZE REFER TO COMPRESSOR IN UNIT FOR ACTUAL TERMINAL ARRANGEMENT COMPRESSOR CONTACTOR RED L2 2 K1 1 RT13 WARNING ELECTRIC SHOCK HAZARD CAN CAUSE INJURY OR DEATH UNIT MUST BE GROUNDED IN...

Page 24: ..._____________ Actual Amps ______ Rated Volts _______ Actual Volts ________ Condenser Fan Full Load Amps _________ Actual Amps ______ Cooling Mode Suction Pressure ____________________ Liquid Pressure...

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