Goodman GMPN120 User Manual

INSTALLATION & OPERATING
INSTRUCTIONS
for GMPN
CONDENSING GAS FURNACE
(CATEGORY IV)
(U.S. PAT. # 5,437,263)
EPA POLLUTION PREVENTER
E FF|CII_NCY
RATING
CERT_FIEO
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IF THIS FURNACE IS INSTALLED IN AN ENCLOSED AREA, SUCH AS A GARAGE OR
UTILITY ROOM, EITHER ALONE OR WITH ANY OTHER CARBON MONOXIDE PRODUCING
DEVICE (i.e. ATUOMOBLIE, SPACE HEATER, WATER HEATER, ETC.) INSURE THAT THE
ENCLOSED AREA IS PROPERLY VENTILATED.
WARNING
CARBON MONOXIDE (REFERRED TO AS CO) CAN CAUSE SERIOUS PERSONAL INJURY I
OR DEATH. I
WARN ING I
THIS FURNACE IS DESIGN CERTIFIED FOR INSTALLATION IN BUILDINGS CONSTRUCTED I
ON SITE ONLY. I
Goodman Manufacturing Company, L.P.
IO-151D 1501 Seamist, Houston, Texas 77008 12/01
REPLACEMENT PARTS

Goodman GMPN120 Specifications

General

Model	GMPN120
Type	Gas Furnace
Heating Capacity	120, 000 BTU
AFUE Rating	80%
Fuel Type	Natural Gas
Installation Type	Upflow/Horizontal
Stages	Single Stage
Blower Motor Type	PSC
Gas Valve Type	Single Stage
Ignition Type	Hot Surface Ignition
Heat Exchanger Material	Aluminized Steel
Warranty	10 Years Limited

Summary

Furnace Installation and Operation

Replacement Parts Information

Details on how to obtain replacement parts and contact information.

General Installation Guidelines

National and Local Codes

Requirements for installation in accordance with USA and Canadian codes.

Location and Clearances

Clearance Requirements

Specific minimum clearance dimensions for servicing and fire safety.

Venting System Installation

Vent Length Limitations

Table of maximum vent lengths based on model, diameter, and elbows.

Condensate and Freezing Protection

Venting Protection

Methods to protect vent pipes and drain assemblies from freezing.

Vent Termination and Support

Vent Termination Safety

Specific safety criteria for vent terminal placement.

Gas Piping and Condensate

Gas Piping Capacity

Guidance on sizing gas pipes and their capacity for the furnace.

Gas Piping Capacity Table

Circulating Air Supply

Requirements for the furnace's circulating and return air system.

Air Supply and Ductwork

Return Air Restrictions

Prohibited locations for return air intake to prevent contamination.

Electrical and Control Wiring

Gas Supply Grounding Warning

Critical warning against using the gas supply pipe for grounding.

Furnace Rating and Altitude

Heat Anticipator Setting

Method for setting the thermostat's heat anticipator.

Timing the Gas Meter

Meter Time Data

Table of meter times for various input rates and heat values.

Burner Adjustment and Safety Checks

Safety Control Procedures

General procedures for checking safety controls at start-up.

Safety Switch Operations

Blower Door Interlock

Function and testing of the switch ensuring the blower door is secure.

Air Filters and Temperature Rise

Filter Size Requirements

Table of minimum filter sizes based on furnace input BTUH.

Motor Maintenance and Sequence

Furnace Sequence of Operation

Step-by-step process of the furnace's heating and cooling cycles.

Appliance Removal and Cooling Mode

Removing Existing Appliance

Steps for removing an existing appliance before installing the new furnace.

Heat Exchanger Servicing

Wiring Errors Caution

Warning about potential hazards from incorrect wiring.

Combustion Air and Blower Delay

Combustion Air Sources

Recommended and restricted sources for combustion air.

Electronic Air Cleaner and Humidifier

Humidifier Control Wiring

Instructions for connecting a humidistat to the furnace control.

Drain Connection Diagrams

Horizontal Drain Configurations

Diagrams illustrating horizontal left and right side drain setups.

Lighting and Operating Procedures

Gas Leak Detection Safety

Critical safety procedures for detecting and responding to gas leaks.

Wiring Diagram and Codes

Wiring Diagram Notes

Important notes and warnings related to the wiring diagram and installation.