Instruction Manual

ManualsBrandsGoodman ManualsHeat PumpGoodman GSZB4 Split Heat Pump

Important Safety Instructions

The following symbols and labels are used throughout this

manual to indicate immediate or potential safety hazards. It is

the owner’s and installer’s responsibility to read and comply

with all safety information and instructions accompanying

these symbols. Failure to heed safety information increases

the risk of personal injury, property damage, and/or product

damage.



-

-



-







-













WARNING





































Always keep the unit upright; laying the unit on its side or top

may cause equipment damage. Shipping damage, and sub-

sequent investigation is the responsibility of the carrier. Verify

the model number, specications, electrical characteristics,

and accessories are correct prior to installation. The distributor

or manufacturer will not accept claims from dealers for trans-

portation damage or installation of incorrectly shipped units.



This product is designed and manufactured to comply with

national codes. Installation in accordance with such codes

and/or prevailing local codes/regulations is the responsibility

of the installer. The manufacturer assumes no responsibility

for equipment installed in violation of any codes or regulations.

Rated performance is achieved after 20 hours of operation.

Rated performance is delivered at the specied airow. See

outdoor unit specication sheet for split system models or

product specication sheet for packaged and light com-

mercial models. Specication sheets can be found at www.

goodmanmfg.com for Goodman

brand products or www.

amana-hac.com for Amana

brand products. Within either

website, please select the residential or commercial products

menu and then select the submenu for the type of product

to be installed, such as air conditioners or heat pumps, to

access a list of product pages that each contain links to that

model’s specication sheet.

    

-



       

     Should you

have any questions please contact the local o󰀩ce of the EPA.

If replacing a condensing unit or air handler, the system must

be manufacturer approved and Air Conditioning, Heating and

Refrigeration Institute (AHRI) matched. Installation of

unmatched systems is not allowed.

Outdoor units are approved for operation above 55°F in

cooling mode. Operation below 55°F requires the use of an

approved low ambient kit.  LAKT01 Low ambient kit

cannot be used with outdoor units containing ECM motors.

Damage to the unit caused by operating the unit in a structure

that is not complete (either as part of new construction or

renovation) is not covered by the warranty.

Summary of content (16 pages)

PAGE 1
CONDENSING UNIT HEAT PUMP INSTALLATION & SERVICE REFERENCE © 2021 Goodman Manufacturing Company, L.P. 19001 Kermier Rd., Waller, TX 77484 www.goodmanmfg.com P/N: IOG-4038 Date: June 2021 Important Safety Instructions Shipping Inspection The following symbols and labels are used throughout this manual to indicate immediate or potential safety hazards. It is the owner’s and installer’s responsibility to read and comply with all safety information and instructions accompanying these symbols.
PAGE 2
Installation Clearances NOTE: These units require special location consideration in areas of heavy snow accumulation and/or areas with prolonged continuous subfreezing temperatures. Heat pump unit bases have cutouts under the outdoor coil that permit drainage of frost accumulation. Situate the unit to permit free unobstructed drainage of the defrost water and ice.
PAGE 3
WARNING To avoid possible explosion, use only returnable (not disposable) service cylinders when removing refrigerant from a system. • Ensure the cylinder is free of damage which could lead to a leak or explosion. • Ensure the hydrostatic test date does not exceed 5 years. • Ensure the pressure rating meets or exceeds 400 lbs. When in doubt, do not use cylinder.
PAGE 4
Refrigerant Line Connections IMPORTANT WARNING To avoid overheating the service valve, TXV valve, or filter drier while brazing, wrap the component with a wet rag, or use a thermal heat trap compound. Be sure to follow the manufacturer’s instruction when using the heat trap compound. NOTE: Remove Schrader valves from service valves before brazing tubes to the valves. Use a brazing alloy of 2% minimum silver content. Do not use flux.
PAGE 5
Electrical Connections CAUTION WARNING Prolonged operation at suction pressures less than 20 psig for more than 5 seconds will result in overheating of the scrolls and permanent damage to the scroll tips, drive bearings and internal seal. HIGH VOLTAGE Disconnect all power before servicing. Multiple power sources may be present. Failure to do so may cause property damage, personal injury or death due to electric shock. Wiring must conform with NEC or CEC and all local codes.
PAGE 6
SYSTEM DIAGRAM - HEAT PUMP WITH TWO STAGE COMPRESSOR AND SINGLE STAGE ELECTRIC HEATER To correct, disconnect power and switch any two leads at the unit contactor and re-observe. High Voltage Connections ROOM THERMOSTAT HEAT PUMP C W2 O Y1 Y2 Y1 R Y2 O C W G R INDOOR UNIT E RD Route power supply and ground wires through the high voltage port and terminate in accordance with the wiring diagram provided inside the control panel cover.
PAGE 7
NOTE: These are not back-seating valves. It is not necessary to force the stem tightly against the rolled lip. NOTE: Charge should always be checked using superheat when using a piston and subcooling when using TXV equipped indoor coil to verify proper charge. Break vacuum by fully opening liquid service valve. After the refrigerant charge has bled into the system, open the suction service valve. The service valve cap is the secondary seal for the valve and must be properly tightened to prevent leaks.
PAGE 8
SATURATED LIQUID PRESSURE TEMPERATURE CHART SATURATED SUCTION PRESSURE TEMPERATURE CHART SATURATED SUCTION SUCTION PRESSURE TEMPERATURE ºF LIQUID PRESSURE SATURATED LIQUID TEMPERATURE ºF PSIG R-22 R-410A PSIG R-22 R-410A 50 26 1 200 101 70 52 28 3 210 105 73 54 29 4 220 108 76 56 31 6 225 110 78 58 32 7 235 113 80 60 34 8 245 116 83 62 35 10 255 119 85 64 37 11 265 121 88 66 38 13 275 124 90 68 40 14 285 127 92 70 41 15 295 130 95 7
PAGE 9
1. Break vacuum by fully opening liquid and suction base valves. 2. Set thermostat to call for cooling. Check indoor and outdoor fan operation and allow system to stabilize for 10 minutes for fixed orifices and 20 minutes for expansion valves. Units matched with indoor coils equipped with a nonadjustable TXV should be charged by Subcooling only. Superheat on indoor coils with adjustable TXV valves are factory set and no adjustment is normally required during startup.
PAGE 10
NOTE: DO NOT adjust the charge based exclusively on suction pressure unless for general charging in the case of a gross undercharge. 6. Add refrigerant to increase Subcooling and remove refrigerant to decrease Subcooling. Adjust Superheat: Only Applicable to Adjustable TXV. NOTE: Check the Schrader ports for leaks and tighten valve cores if necessary. Install caps finger-tight.
PAGE 11
Troubleshooting Information Power Failure Blown Fuse Unbalanced Power, 3PH Loose Connection Shorted or Broken Wires Open Fan Overload Faulty Thermostat Faulty Transformer Shorted or Open Capacitor Internal Compressor Overload Open Shorted or Grounded Compressor Compressor Stuck Faulty Compressor Contactor Faulty Fan Relay Open Control Circuit Low Voltage Faulty Evap.
PAGE 12
SPLIT SYSTEMS AIR CONDITIONING AND HEAT PUMP HOMEOWNER’S ROUTINE MAINTENANCE RECOMMENDATIONS We strongly recommend a bi-annual maintenance checkup be performed before the heating and cooling seasons begin by a qualified servicer. Replace or Clean Filter Clean Outside Coil (Qualified Servicer Only) IMPORTANT NOTE: Never operate unit without a filter installed as dust and lint will build up on internal parts resulting in loss of efficiency, equipment damage and possible fire.
PAGE 13
Start-Up Checklist Condenser / Heat Pump (including all Inverter) Model Number Serial Number ELECTRICAL (Outdoor Unit) Line Voltage (Measure L1 and L2 Voltage) Secondary Voltage (Measure Transformer Output Voltage) NOT ALL MODELS Compressor Amps Condenser Fan Amps TEMPERATURES (Indoor Unit) Return Air Temperature (Dry bulb / Wet bulb) Cooling Supply Air Temperature (Dry bulb / Wet bulb) Delta T (Difference between Supply and Return Temperatures) PRESSURES / TEMPERATURES (Outdoor Unit) Suction Circuit (Press
PAGE 14
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CUSTOMER FEEDBACK We are very interested in all product comments. Please fill out the feedback form on one of the following links: Goodman® Brand Products: (http://www.goodmanmfg.com/about/contact-us). You can also scan the QR code on the right for the product brand you purchased to be directed to the feedback page. PRODUCT REGISTRATION Thank you for your recent purchase.