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Goodman GMS95 User Manual

Goodman GMS95
37 pages
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Goodman Manufacturing Company, L.P.
2550 North Loop West, Suite 400, Houston, TX 77092
www.goodmanmfg.com
© 2005-2006 Goodman Manufacturing Company, L.P.IO-277C 07/06
INSTALLATION INSTRUCTIONS
GMS95
G
AS
-F
IRED
W
ARM
A
IR
F
URNACE
*NOTE: Please contact your distributor or our
website for the applicable product data book
referred to in this manual.
ATTENTION INSTALLING PERSONNEL
As a professional installer you have an obligation to know the product better than the customer. This includes all safety
precautions and related items.
Prior to actual installation, thoroughly familiarize yourself with this Instruction Manual. Pay special attention to all safety
warnings. Often during installation or repair it is possible to place yourself in a position which is more hazardous than
when the unit is in operation.
Remember, it is your responsibility to install the product safely and to know it well enough to be able to instruct a customer
in its safe use.
Safety is a matter of common sense...a matter of thinking before acting. Most dealers have a list of specific good safety
practices...follow them.
The precautions listed in this Installation Manual are intended as supplemental to existing practices. However, if there is
a direct conflict between existing practices and the content of this manual, the precautions listed here take precedence.
(Type FSP CATEGORY IV Direct or Non Direct Vent Air Furnace)
RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.
Installer: Affix all manuals adjacent to the unit.
These furnaces comply with requirements
embodied in the American National Stan-
dard / National Standard of Canada ANSI
Z21.47·CSA-2.3 Gas Fired Central Fur-
naces.
C
US
®

Table of Contents

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Goodman GMS95 Specifications

General IconGeneral
ModelGMS95
StagesTwo-Stage
Heating Capacity40, 000-120, 000 BTU/h
Fuel TypeNatural Gas/Propane
Warranty10-Year Parts Limited Warranty

Summary

Attention Installing Personnel

General Safety Precautions for Installers

Emphasizes installer's responsibility for safety and product knowledge, including warnings and precautions.

Important Safety Warnings

Fire and Explosion Hazards

Details risks of flammable vapors, gas leaks, and proper response procedures.

Carbon Monoxide Poisoning Hazard

Highlights risks of CO poisoning and necessary ventilation for enclosed areas.

Component Identification

Safety and Product Application

General Safety Guidelines

Covers essential warnings for installation, service, and operation, including electrical safety.

Location Requirements and Considerations

Combustion and Ventilation Air Requirements

General Air Supply Needs

Explains the critical need for adequate air for combustion and ventilation to prevent CO hazards.

Gas Type and Altitude Adjustments

Propane Gas and High Altitude Installations

Details required kits and considerations for propane fuel and high altitude operation.

Vent/Flue Pipe Materials and Terminations

Vent/Flue Termination Location Restrictions

Defines required clearances and locations for vent and air intake terminations.

Condensate Drain Lines and Trap

Electrical Connections

Wiring Harness and Junction Box Relocation

Describes the furnace wiring harness and how to relocate the junction box.

115 Volt Line Connections

Covers power supply requirements, grounding, and circuit protection.

Thermostat and Accessory Wiring

Gas Supply and Piping Requirements

High Altitude Derate and Propane Conversion

Addresses adjustments for altitude and conversion to propane gas.

Circulating Air and Filters

Startup Procedure and Adjustment

Furnace Startup and Shutdown

Outlines the steps for safely starting and stopping the furnace operation.

Gas Supply Pressure Measurement

Details how to measure and verify the incoming gas supply pressure.

Gas Input Rate, Temperature Rise, and Blower Speeds

Temperature Rise and Blower Speed Adjustment

Covers adjusting airflow for correct temperature rise and blower speed selection.

Normal Sequence of Operation

Operational Checks and Safety Circuits

Safety Circuit Description

Explains the function of various safety controls like limits and pressure switches.

Troubleshooting and Diagnostics

Electrostatic Discharge (ESD) Precautions

Reiterates ESD precautions for servicing electronic components.

Maintenance Procedures

Final Installation Checks

GMS95 Wiring Diagram

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