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A/GPUM3 13.4 SEER2 "M" SERIES
Single Package Gas-Electric Ultra-Low Nox Heating & Cooling Unit
Affix this manual and
Users Information Manual adjacent to the unit.
NOTE: this equipment is only approved for use with
r-32 refrigerant.
ATTENTION INSTALLING PERSONNEL:
Prior to installation, thoroughly familiarize yourself with this
Installation Manual. Observe all safety warnings. During
installation or repair, caution is to be observed.
It is your responsibility to install the product safely and to
educate the customer on its safe use.
RECOGNIZE THIS SYMBOL
AS A SAFETY PRECAUTION.
These installation instructions cover the outdoor installation
of self contained package air conditioners and heating
units. See the Specification Sheets applicable to your
model for information regarding accessories.
IOG-3034A
01/2025
19001 Kermier Rd., Waller, TX 77484
www.goodmanmfg.com • www.amana-hac.com
© 2025 Daikin Comfort Technologies Manufacturing, L.P.
® is a registered trademark of Maytag Corporation or its related companies and is used under license. All rights reserved.
With R-32
Only personnel that have been trained to install, adjust,
service, maintenance or repair (hereinafter, "service")
the equipment specified in this manual should service the
equipment.
This equipment is not intended for use by persons
(including children) with reduced physical, sensory or
mental capacities, or lack of experience and knowledge,
unless they have been given supervision or instruction
concerning use of the appliance by a person responsible
for their safety.
Children should be supervised to ensure that they do not
play with the equipment.
The manufacturer will not be responsible for any injury
or property damage arising from improper supervision,
service or service procedures. If you service this unit, you
assume responsibility for any injury or property damage
which may result. In addition, in jurisdictions that require
one or more licenses to service the equipment specified in
this manual, only licensed personnel should service the
equipment. Improper supervision, installation, adjustment,
servicing, maintenance or repair of the equipment specified
in this manual, or attempting to install, adjust, service
or repair the equipment specified in this manual without
proper supervision or training may result in product
damage, property damage, personal injury or death.
Do not bypass safety devices.
*NOTE: Please contact your distributor or our website
for the applicable Specification Sheets referred to in this
manual.
This Forced Air Central Unit Design Complies With
Requirements Embodied In The American National
Standard / National Standard of Canada Shown Below.
ANSI Z21.47•CSA-2.3 Central Furnaces.
WARNING
WARNING
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Related Manuals for Maytag Amana A/GPUM3 M Series
Summary of Contents for Maytag Amana A/GPUM3 M Series
- Page 1 19001 Kermier Rd., Waller, TX 77484 www.goodmanmfg.com • www.amana-hac.com © 2025 Daikin Comfort Technologies Manufacturing, L.P. IOG-3034A 01/2025 ® is a registered trademark of Maytag Corporation or its related companies and is used under license. All rights reserved.
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Page 2: Table Of Contents
TABLE OF CONTENTS SAFETY INSTRUCTIONS ............3 EEM Motors ..............21 To the Installer ............... 3 Limit Check ............... 21 Safety Considerations ........... 3 Unit Shut Down ..............22 HIGH ALTITUDE ............... 5 Cooling Startup .............. 22 Replace ID Plug ............... 5 Compression Protection Devices ........ -
Page 3: Safety Instructions
SAFETY INSTRUCTIONS To The Installer Before installing this unit, please read this manual to familiarize yourself on the specific items which must be adhered to, including maximum external static pressure to unit, air temperature rise, minimum or maximum CFM and motor speed connections. -
Page 4: Fire Or Explosion Hazard
WARNING FIRE OR EXPLOSION HAZARD Failure to follow the safety warnings exactly could result in serious injury, death or property damage. Never test for gas leaks with an open flame. Use a commercially available soap solution made specifically for the detection of leaks to check all connections. A fire or CARBON MONOXIDE POISONING HAZARD explosion may result causing property damage, personal injury Special Warning for Installa on of Furnace or Air Handling Units in... -
Page 5: High Altitude
Replacing ID Plug WARNING To replace ID plug: 1. Turn OFF power to unit. Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer. The appliance shall be stored in a room without continuously WARNING operating ignition sources (for example: Open flames, an operating gas appliance or an operating electric heater.) -
Page 6: Replacement Parts
REPLACEMENT PARTS Qualification of Workers Personnel must be certified to service, work, and/or repair units with FLAMMABLE REFRIGERANTS. A certificate Ordering Parts should document the When reporting shortages or damages, or ordering repair competence and qualification achieved through training that parts, give the complete unit model and serial numbers as included the substance of the following: stamped on the unit’s nameplate. -
Page 7: Accessory Installation
THE FOLLOWING INSTRUCTIONS ARE MANDATORY FOR A2L SYSTEMS AND SUPERSEDE OTHER INSTRUCTIONS WARNING ONLY BRAZING TECHNIQUES AND APPROVED MECHANICAL JOINTS SHOULD BE USED TO CONNECT REFRIGERANT TUBING CONNECTIONS. NON-APPROVED MECHANICAL CONNECTORS AND OTHER METHODS ARE NOT PERMITTED IN THIS SYSTEM CONTAINING A2L REFRIGERANT. APPROVED MECHANICAL JOINTS WILL BE DETAILED IN THE PRODUCT'S SPECIFICATION SHEETS. - Page 8 ALTITUDE ADJUSTMENT FACTOR TO CALCULATE MINIMUM ROOM AREA The Indoor equipment mitigation requirements are calculated at sea level. For higher altitudes adjust the minimum room area specified o n or near the Serial Plate by the corresponding altitude adjustment factor shown below.
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Page 9: Detection Of Flammable Refrigerants
NOTE: When inspecting the unit for transportation damage, remove all packaging materials. Recycle WARNING or dispose of the packaging material according to local codes. Do not operate the compressor(s) without the terminal plug fully engaged or the terminal cover properly installed. Get away if unusual sounds are heard from within the Detection of Flammable Refrigerants compressor. -
Page 10: Unit Location
The appliance shall be installed, operated and AVERTISSEMENT stored in a room with a floor area not less than the minimum room area. RISQUE D’INTOXICATION AU MONOXYDE DE CARBONE Si les étapes décrites ci-dessous ne sont pas suivies pour chacun des appareils raccordés au système de ventilation au moment de sa mise en marche, cela peut entraîner une intoxication au monoxyde de carbone ou la mort. -
Page 11: Ground Level Installations Only
Ground Level Installations Only: When the unit is installed on the ground adjacent to the building, a level concrete (or equal) base is recommended. Prepare a base that is 3” larger than the package unit footprint and a minimum of 3” thick. •... -
Page 12: Rigging Details
To assist in determining rigging requirements, unit weights and center of gravity are shown as follows: Model Roof Curb A/GPUM3(24-60)***31** D14CRBPGCHMA RIGGING DETAILS WARNING To prevent property damage, the unit should remain in an upright position during all rigging and moving operations. To facilitate lifting and moving when a crane is used, place the unit in an adequate cable sling. -
Page 13: Piping
• Rigid metallic pipe and fittings CAUTION • Semirigid metallic tubing and metallic fittings (Aluminum alloy tubing must not be used in exterior locations) To prevent unreliable operation or equipment damage, the inlet gas supply pressure must be as specified on the unit •... -
Page 14: Electrical Wiring
There will be air in the gas supply line after testing for leaks Refer to the unit wiring diagram for electrical connections. on a new installation. Therefore, the air must be bled from When installed, the unit must be electrically grounded in the line by loosening the ground joint union until pure gas accordance with local codes or in the absence of local is expelled. -
Page 15: Circulating Air And Filters
The unit transformer is factory connected for 240V NOTE: Single phase models require installation of operation. If the unit is to operate on 208V, reconnect horizontal duct kit #20464501NGK (medium chassis) and #20464502NGK (large chassis). See “Unit the transformer primary lead as shown on the unit wiring diagram. -
Page 16: Venting
Filters installed external to the unit should be sized in accordance with their manufacturer recommendations. A throwaway filter must be sized for a maximum face velocity of 300 feet per minute. Filter Installation IMPORTANT NOTE: When installing a filter, the air flow arrows on the filter must point toward the circulator blower. -
Page 17: Cooling
6. Integrated control module monitors flame presence. 6. The indoor blower continues to run at low cool speed Gas valve will remain open only if the flame is for approximately 60 seconds after the thermostat is detected. satisfied. This allows additional cooling from the indoor 7. -
Page 18: Gas Supply Pressure Measurement
The line pressure supplied to the gas valve must be within the Inlet Gas Supply Pressure range specified. The supply pressure can be measured at the gas valve inlet pressure tap or at a hose fitting installed in the gas piping drip leg. Secondary The supply pressure must be measured with the unit OFF. -
Page 19: Gas Manifold Pressure Measurement And Adjustment
. Mode White-Rodgers Model 36J22 Connected to Manometer INLET GAS SUPPLY PRESSURE 10.0 Na tura l Ga s Mi n. 5.0" W.C., Ma x. 10.0" W.C. 7. Turn OFF all electrical power and gas supply to the Mode system. 8. Remove the manometer hose from the hose barb fitting or inlet pressure Tap. -
Page 20: Gas Btu Input Check
8. Measure the gas manifold pressure with burners firing. Example: Natural gas with a heating value of 1000 Adjust manifold pressure using the following Manifold BTU per cubic foot and 36 seconds per cubic foot as Gas Pressure table. determined by Step 2, then: Input = 1000 x 3600 / 36 = 100,000 BTU per Hour. -
Page 21: External Static Pressure Check
NOTE: Blower speed MUST be set to give the Blower Speed Adjustments correct air temperature rise through the unit as WARNING marked on the rating plate. To avoid personal injury or death due to electric shock, External Static Pressure Check remove electrical power from the unit before changing The total external static pressure must be checked on this speed taps on the blower motors. -
Page 22: Unit Shutdown
Unit Shutdown RDS Operation 1. Set the thermostat to lowest setting. The mitigation system is controlled by a refrigerant 2. Turn off the electrical power supply to the unit. sensor(s), which is secured to a designated location(s) for 3. Remove the heat exchanger door on the side of the active monitoring. -
Page 23: Charging Procedures
To obtain the degrees temperature of superheat, subtract a. If subcooling and superheat are low, adjust TXV 50.0 from 59.0°F. The difference is 9° Superheat. The 9° superheat, then check subcooling. NOTE: To adjust superheat, turn the valve stem Superheat would fall in the ± range of allowable superheat. clockwise to increase and counterclockwise to SUPERHEAT = SUCTION LINE TEMP - SAT. -
Page 24: Troubleshooting
Fault Recall When transferring refrigerant into cylinders, ensure The ignition control is equipped with a momentary push- that only appropriate refrigerant recovery cylinders are button switch that can be used to display on the diagnostic employed. Ensure that the correct number of cylinders for LED the last five faults detected by the control. -
Page 25: Pressure Sensor
The diagnostic fault code is 1 flash for a lockout due Flame Detected with Gas Valve Closed to failed ignition attempts. The integrated control will If flame is detected with the gas valve de-energized, the automatically reset after one hour, or it can be reset by combustion and air circulator blowers are energized. -
Page 26: High Pressure Switch/Low Pressure Switch
NOTE: Some electronic thermostats also have a REFRIGERANT SENSORS for REFRIGERANT built-in compressor short cycle timer that may be DETECTION SYSTEMS shall only be replaced with longer than the three minute delay given above. sensors specified by the manufacturer. If REFRIGERANT If you are using an electronic thermostat and the SENSOR requires replacement, please replace with compressor has not started after three minutes,... -
Page 27: Clean Outside Coil (Qualified Servicer Only)
Clean Outside Coil (Qualified Servicer Only) Burners The coil with the outside air flowing over it should be inspected annually and cleaned as frequently as necessary to keep the finned areas free of lint, hair and debris. Clean Indoor Coil (Qualified Servicer Only) Before cleaning the indoor coil, A2L sensor must be removed from the unit to avoid damage and contamination. -
Page 28: Accessories And Functional Parts
ACCESSORIES AND FUNCTIONAL PARTS Sheet Metal Accessories Additional accessories can be purchased to fit specific application needs. Parts and instructions are available from your distributor. FUNCTIONAL PARTS Auxiliary Limit Switch Gas Orifice Blower Housing Gas Valve Blower/Collector Box Gasket Gas Manifold Blower Wheel Heat Exchanger Burner Box... -
Page 29: Appendix
APPENDIX Diagnostic Chart THE STATUS LIGHT ON THE FURNACE CONTROL MAY BE USED AS A GUIDE TO TROUBLESHOOTING THIS APPLIANCE. SOME MORE USEFUL STATUS LIGHT CODES ARE BELOW: MINIMUM MINIMUM MINIMUM DESCRIPTION COLOR LOCKOUT DESCRIPTION COLOR LOCKOUT DESCRIPTION COLOR LOCKOUT ACTIVITY ACTIVITY ACTIVITY... -
Page 30: Unit Dimensions
APPENDIX Unit Dimensions Unit Dimensions (Inches) Model Chassis Size Height A/GPUM324***31** 34 1/2 Medium A/GPUM330***31** 34 1/2 Medium A/GPUM336***31** 34 1/2 Medium A/GPUM342***31** 42 1/2 Large A/GPUM348***31** 42 1/2 Large A/GPUM360***31** 42 1/2 Large Duct Openings Model Supply Return A/GPUM324***31** A/GPUM330***31** A/GPUM336***31** A/GPUM342***31**... -
Page 31: Wiring Diagram
WIRING DIAGRAM A/GPUM3 [24/30/36/42/48]***31 HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. ALARM PLM1 NOTUSED LINE EEV/10V_IN VOLTAGE EEV/10V_OUT 208-230V/1PH/60Hz t = 180s CTM/OD_OUT... - Page 32 WIRING DIAGRAM A/GPUM360***31 HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. t = 180s LINE VOLTAGE 208-230V/1PH/60Hz ALARM PLM1 NOT USED EEV/10V_IN EEV/10V_OUT...
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Page 33: Blower Performance Data
BLOWER PERFORMANCE DATA A/GPUM32404031- Rise Range: 25°-55° CURRENT T1 FAN ONLY SPEED T2 HEATING SPEED T3 HEATING SPEED T4 COOLING SPEED T5 COOLING SPEED E.S.P. WATTS RISE WATTS RISE WATTS RISE WATTS WATTS 1080 1119 1032 1110 1083 1052 1017 A/GPUM33006031- Rise Range: 30°-60°... - Page 34 BLOWER PERFORMANCE DATA A/GPUM36008031 - Rise Range: 30° - 60° CURRENT T1 FAN ONLY SPEED T2 HEATING SPEED T3 LOW STAGE T4 HIGH STAGE T5 COOLING SPEED E.S.P. WATTS WATTS RISE WATTS WATTS WATTS 1156 1283 1416 2047 2107 1077 1224 1354 1992...
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Page 35: Homeowner's Routine Maintenance Recommendations
HOMEOWNER’S ROUTINE MAINTENANCE RECOMMENDATIONS PACKAGE UNITS - Dual Fuel & Gas HOMEOWNER’S Routine Maintenance Recommendations We strongly recommend a bi-annual maintenance checkup be performed by a qualified service agency before the heating and cooling seasons begin Condenser, Evaporator and Induced Draft Motors WARNING The bearings on the air circulating blower motor, condenser motor and the Induced Draft fan motor are permanently... - Page 36 Before Calling Your Servicer • Check the thermostat to confirm that it is properly set. by objects (rugs, curtains or furniture). • Check the disconnect switch near the unit to confirm • Check for obstructions on the unit. Confirm that it has that it is closed.
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Page 37: Startup Checklist
STARTUP CHECKLIST Residential Package - (Indoor Section) Model Number Serial Number ELECTRICAL Line Voltage (Measure L1 and L2 Voltage) L1 - L2 Secondary Voltage (Measure Transformer Output Voltage) R - C ELECTRICAL Blower Amps Heat Strip 1 - Amps Heat Strip 2 - Amps BLOWER EXTERNAL STATIC PRESSURE Return Air Static Pressure IN. - Page 38 THIS PAGE LEFT INTENTIONALLY BLANK.
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Page 40: Customer Feedback
Our continuing commitment to quality products may mean a change in specifications without notice. 19001 Kermier Rd, Waller, TX 77484 www.goodmanmfg.com • www.amana-hac.com © 2025 Daikin Comfort Technologies Manufacturing, L.P. ® is a registered trademark of Maytag Corporation or its related companies and is used under license. All rights reserved.
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