Goodman CONDENSING UNIT Installation & Service Reference
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Goodman CONDENSING UNIT Installation & Service Reference

Single / three phase heat pumps
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CONDENSING UNIT
SINGLE / THREE PHASE HEAT PUMPS
INSTALLATION & SERVICE REFERENCE
NOTICE
THIS UNIT IS SHIPPED WITH A NITROGEN/HELIUM
HOLDING CHARGE ONLY. UNIT MUST BE EVACUATED
AND CHARGED PER INSTALLATION INSTRUCTIONS
WITH REFRIGERANT LISTED ON SERIAL RATING PLATE.
NOTICE
UNITS SHIPPED WITH A HOLDING CHARGE ARE
INTENDED FOR COMPONENT REPLACEMENT ONLY ON
EXISTING SYSTEMS, AND NOT INTENDED FOR USE IN
NEW SYSTEMS OR NEWLY CONSTRUCTED HOMES.
EPA REGULATIONS PROHIBIT THE SALE OR
DISTRIBUTION OF APPLIANCES PRE-CHARGED WITH
THE REFRIGERANT R-22 IF THOSE APPLIANCES ARE
MANUFACTURED AFTER JANUARY 1, 2010.
COMPONENTS OF EXISTING R-22 SYSTEMS MAY BE
REPAIRED AND/OR REPLACED.
NOTICE
UNITS MUST ONLY BE USED AS REPLACEMENT
COMPONENTS FOR PRE-2010 INSTALLED SYSTEMS.
See unit rating plate for initial charge.
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
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.
ONLY individuals meeting (at a minimum) the
requirements of an "Entry Level Technician" as
specified by the
Air-Conditioning, Heating and
Refrigeration Institute (AHRI)
information. Attempting to install or repair this unit
without such background may result in product
damage, personal injury, or death.
may use this
© 2010-2012 Goodman Manufacturing Company, L.P.
5151 San Felipe, Suite 500, Houston, TX 77056
www.goodmanmfg.com -or- www.amana-hac.com
P/N: IO-403D
Date: May 2012
CAUTION
Scroll equipped units should never be used to evacuate
the air conditioning system. Vacuums this low can cause
internal electrical arcing resulting in a damaged or failed
compressor.
Important Note to the Owner Regarding Prod-
uct Warranty
Your warranty certificate is supplied as a separate document
with the unit installed by your contractor. Read the limited
warranty certificate carefully to determine what is and is not
covered and keep the warranty certificate in a safe place. If you
are unable to locate the warranty certificate please contact
your installing contractor or contact customer service (877-
254-4729) to obtain a copy.

Shipping Inspection

Always keep the unit upright; laying the unit on its side or top
may cause equipment damage. Shipping damage, and subse-
quent investigation is the responsibility of the carrier. Verify
the model number, specifications, electrical characteristics,
and accessories are correct prior to installation. The distribu-
tor or manufacturer will not accept claims from dealers for trans-
portation damage or installation of incorrectly shipped units.
Codes & Regulations
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 equip-
ment installed in violation of any codes or regulations. Rated
performance is achieved after 72 hours of operation.
The United States Environmental Protection Agency (EPA)
has issued various regulations regarding the introduc-
tion and disposal of refrigerants. Failure to follow these
regulations may harm the environment and can lead to
the imposition of substantial fines. Should you have any
questions please contact the local office 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. NOTE: Installation of
unmatched systems is strongly discouraged.
Operating the unit in a structure that is not complete (either as
part of new construction or renovation) will void the warranty.

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  • Page 1: Shipping Inspection

    EPA. Failure to do so may cause property damage, personal injury or death. If replacing a condensing unit or air handler, the system must be manufacturer approved and Air Conditioning, Heating and Refrigeration Institute (AHRI) matched. NOTE: Installation of unmatched systems is strongly discouraged.

  • Page 2: Safe Refrigerant Handling

    Installation Clearances NOTE: These units require special location consideration in areas of heavy snow accumulation and/or areas with prolonged Special consideration must be given to location of the con- continuous subfreezing temperatures. Heat pump unit bases densing unit(s) in regard to structures, obstructions, other units, have cutouts under the outdoor coil that permit drainage of and any/all other factors that may interfere with air circulation.

  • Page 3: Burying Refrigerant Lines

    Use only refrigerant grade (dehydrated and sealed) copper tub- ing to connect the condensing unit with the indoor evaporator. After cutting the tubing, install plugs to keep refrigerant tubing clean and dry prior to and during installation. Tubing should Insulation is necessary to prevent condensation from forming always be cut square keeping ends round and free from burrs.
  • Page 4 Use a brazing alloy of 2% minimum silver content. Do not use flux. Condensing unit liquid and suction valves are closed to contain Torch heat required to braze tubes of various sizes is the charge within the unit.

  • Page 5: Electrical Connections

    Wires should be sized to limit voltage drop to 2% (max.) cally pressure will rise during this period. from the main breaker or fuse panel to the condensing unit. Consult the NEC, CEC, and all local codes to determine the correct wire gauge and length.

  • Page 6: High Voltage Connections

    Low Voltage Connections Thermostat Condensing unit control wiring requires 24 Volt minimum, 25VA with Low Voltage Wires to Heat Pump Unit service from the indoor transformer. Route control wires through the low voltage port and terminate in accordance with the wir- System Start Up ing diagram provided inside the control panel cover.
  • Page 7 Charge Verification CAUTION POSSIBLE REFRIGERANT LEAK WARNING To avoid a possible refrigerant leak, open the service valves until the top of the stem is 1/8” from the retainer. REFRIGERANT UNDER PRESSURE! • Do not overcharge system with refrigerant. • Do not operate unit in a vacuum or at negative pres- NOTICE sure.
  • Page 8 SATURATED LIQUID PRESSUR E SATU RATED SUC TION PRESSURE TEMPERATURE CHART TEMPERATURE CHART SATURATED SUCTION SATUR ATED LIQUID LIQUID PRESSURE SUCTION PR ESSURE TEMPERATURE ºF TEMPERATURE ºF PSIG R-22 PSIG R-22...

  • Page 9: Fixed Orifice

    3. Check subcooling and superheat. Systems with TXV ap- Fixed Orifice plication should have a subcooling of 7 ± 2 ºF and super- heat of 8 ± 1 ºF. CAUTION If subcooling and superheat are low, adjust TXV to To prevent personal injury, carefully connect and disconnect 7 to 9 ºF superheat, then check subcooling.

  • Page 10: Troubleshooting Information

    • ♦ Cooling or Heating Cycle (Heat Pump) Heating Cycle Only (Heat Pump) For detailed service information refer to the Remote Condensing Unit Service manual. NOTICE UNITS WITH ROTARY OR RECIPROCATING COMPRESSORS AND NON-BLEED TXV’S REQUIRE A HARD START KIT.
  • Page 11 THIS PAGE INTENTIONALLY LEFT BLANK...

  • Page 12: Split Systems

    Loss of refrigerant can cause poor Compressor operation and/or severe equipment damage. Do not use a condensing unit cover to “protect” the outdoor The compressor motor is hermetically sealed and does not unit during the winter, unless you first discuss it with your require additional oiling.

  • Page 13: Condensing Unit

    EPA. or death. If replacing a condensing unit or air handler, the system must be manufacturer approved and Air Conditioning, Heating and CAUTION Refrigeration Institute (AHRI) matched. NOTE: Installation Scroll equipped units should never be used to evacuate of unmatched systems is strongly discouraged.

  • Page 14: Installation Clearances

    Vibration absorbing pads or springs can be installed between This unit is designed for outdoor installations only. Special the condensing unit legs or frame and the roof mounting as- consideration must be given to location of the condensing sembly to reduce noise vibration.
  • Page 15 Use only refrigerant grade (dehydrated and sealed) copper tubing to connect the condensing unit with the indoor evapo- rator. After cutting the tubing, install plugs to keep refriger- ant tubing clean and dry prior to and during installation. Tub- ing should always be cut square keeping ends round and free from burrs.
  • Page 16 (1/2” per 10’ toward the condensing unit. 2. “Sweep” the refrigerant line with nitrogen or inert gas during brazing to prevent the formation of copper-ox- Filter Drier and Sight Glass ide inside the refrigerant lines.
  • Page 17 2500 2000 System Evacuation CONDENSIBLES OR SMALL 1500 Condensing unit liquid and suction valves are closed to con- LEAK PRESENT tain the charge within the unit. The unit is shipped with the 1000 valve stems closed and caps installed. NO LEAKS...
  • Page 18 Applying previous table wire sizes less than #8 AWG cannot be used for circuits which have a rating of 45A. The condensing unit rating plate lists pertinent electrical data The #8 wire is not suitable since the maximum length for necessary for proper electrical service and overcurrent pro- a 45A circuit is 68’.
  • Page 19 18 lbs for the 10 ton unit. The length of line set, indoor Condensing unit control wiring requires a five-conductor low unit airflow, condensing unit location and number of tubing voltage circuit from the room thermostat (without options). fittings will have an impact on final unit charge amount. Turn The wires should be no smaller than 18 AWG and the field the electrical power on, and let the system run.

  • Page 20: Final Charge Adjustment

    Subcooling Formula = Sat. Liquid Temp. - Liquid Line Temp. CAUTION NOTE: Check the Schrader ports for leaks and tighten valve Use refrigerant certified to AHRI standards. Use of used cores if necessary. Install caps finger-tight. refrigerant may cause compressor damage that is not covered under warranty.
  • Page 21 During defrost the following actions occur: NOTE: The compressor “run time’ is accumulative during multiple heating cycles. The timer will reset to zero only when 1. The reversing valve is energized and the heat pump the defrost sensor returns to an open condition. If the room operates in the cooling mode.
  • Page 22 TROUBLE SHOOTING ANALYSIS TABLE COMPLAINT PROBABLE CAUSE REMEDY 1. Excessive charge of refrigerant in system. 1. Purge or pump-down excessive charge. 2. Inadequate supply of air across the 2. Make certain that coil is not fouled in any way, or that 1.
  • Page 23 THIS PAGE INTENTIONALLY LEFT BLANK...
  • Page 24 NOTE: SPECIFICATIONS AND PERFORMANCE DATA LISTED HEREIN ARE SUBJECT TO CHANGE WITHOUT NOTICE Quality Makes the Difference! All of our systems are designed and manufactured with the same high quality standards regardless of size or efficiency. We have designed these units to significantly reduce the most frequent causes of product failure. They are simple to service and forgiving to operate.

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