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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.

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.

WARNING

ONLY individuals meeting the requirements of an
“Entry Level Technician”, at a minimum, as specified 
by the Air Conditioning, Heating and Refrigeration 
Institute (AHRI) may use this information.  Attempting 
to install or repair this unit without such background 
may result in product damage, personal injury, 
or death.

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.

CONDENSING AC UNIT

3-PHASE 7.5 & 10 TON AIR CONDITIONER
INSTALLATION & SERVICE REFERENCE

© 2010 Goodman Manufacturing Company, L.P.
5151 San Felipe, Suite 500, Houston, TX 77056
www.goodmanmfg.com -or- www.amana-hac.com
P/N: IO-404

Date:  November 2010

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.

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.

Refer to the unit Specification Sheet for the recommended in-
door model selection. 

NOTE:

 This unit must be used with a

purchased single stage room thermostat with 24 VAC control
circuitry.

Do not operate the unit in a structure that is not complete
(either as part of new construction or renovation). Such opera-
tion will void the warranty.

Installation Clearances

This unit is designed for outdoor installations only. Special
consideration must be given to location of the condensing unit(s)
in regard to structures, obstructions, other units, and any/all
other factors that may interfere with air circulation.  Where
possible, the top of the unit should be completely unobstructed;
however, if vertical conditions require placement beneath an
obstruction 

there should be a minimum of 60 inches be-

tween the top of the unit and the obstruction(s).  

The speci-

fied dimensions meet requirements for air circulation only.
Consult all appropriate regulatory codes prior to determining
final clearances.

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.

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.

NOTICE

NOTICE

UNITS MUST ONLY BE USED AS REPLACEMENT COMPONENTS FOR PRE-2010
INSTALLED SYSTEMS.

Summary of Contents for CONDENSING AC UNIT

Page 1: ...s no responsibility for equip ment installed in violation of any codes or regulations 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 offi...

Page 2: ...rant used Store cylinders in a cool dry place Never use a cy linder as a platform or a roller Another important consideration in selecting a location for the unit s is the angle to obstructions Either side adjacent the valves can be placed toward the structure provided the side away from the structure maintains minimum service clearance Corner installations are strongly discouraged 12 12 60 24 Thi...

Page 3: ... type hanger Keep both lines separate and always insulate the suction line Suct Liq Suct Liq Suct Liq 7 1 2 1 1 8 5 8 1 3 8 5 8 1 3 8 5 8 10 1 3 8 5 8 1 5 8 5 8 1 5 8 5 8 Cond Unit Tons REFRIGERANT LINE LENGTH ft 0 24 25 49 50 74 Line Diameter In OD Full rating line size Lines greater than 74 feet in length or vertical elevation changes more than 50 feet refer to the Remote Cooling Service Manual ...

Page 4: ...isk of fire or explosion never use oxygen high pressure air or flammable gases for leak testing of a refrigeration system WARNING To avoid possible explosion the line from the nitrogen cylinder must include a pressure regulator and a pressure relief valve The pressure relief valve must be set to open at no more than 150 psig WARNING Pressure test the system using dry nitrogen and soapy water to lo...

Page 5: ... NOTICE Units with reciprocating compressors and non bleed TXV s require a Hard Start Kit This unit is designed for three phase operation DO NOT OP ERATE ON A SINGLE PHASE POWER SUPPLY Measure the power supply to the unit The supply voltage must be in agreement with the unit rating plate power requirements RATED VOLTAGE MINIMUM SUPPLY VOLTAGE MAXIMUM SUPPLY VOLTAGE 208 230V 197 253 460V 414 506 Th...

Page 6: ...e Compressor Rotation Use care when handling scroll compressors Dome temp eratures could be hot CAUTION Three phase scrolls are power phase dependent and can com press in more than one direction Verify proper rotation for three phase compressors by ensuring the suction pressure drops and discharge pressure rises when the compressor is energized NOTE When operated in re verse a three phase scroll c...

Page 7: ...p plication should have a subcooling of 11 2 ºF and su perheat of 9 1 ºF a If subcooling and superheat are low adjust TXV to 9 1 ºF superheat then check subcooling NOTE To adjust superheat turn the valve stem clock wise to increase and counter clockwise to decrease b If subcooling is low and superheat is high add charge to raise subcooling to 11 2ºF then check superheat c If subcooling and superhe...

Page 8: ...oil Clean or replace filters 7 Flash gas in the liquid line 7 Excessive liquid line drop Check liquid line size 8 Quantity of air through evaporator not adequate 8 Increase the blower speed 1 Expansion valve stuck open 1 Correct valve action or replace the valve 2 Expansion valve bulb not in contact with 2 Fasten bulb securely to suction line suction line 3 Suction and or discharge valve leaking o...

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