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Goodman GMH95 User Manual

Goodman GMH95
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INSTALLATION INSTRUCTIONS
GMH95/GCH95/GME95/GCH9
G
AS
-F
IRED
W
ARM
A
IR
F
URNACE
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
®
NOTE: Please contact your distributor or our website
for the applicable Specification Sheet referred to in this manual.
Goodman Manufacturing Company, L.P.
5151 San Felipe, Suite 500, Houston, TX 77056
www.goodmanmfg.com
© 2006-2011 Goodman Manufacturing Company, L.P.
IO-299O
12/11

Table of Contents

Other manuals for Goodman GMH95

Questions and Answers:

Goodman GMH95 Specifications

General IconGeneral
AFUE Rating95%
TypeGas
ConfigurationUpflow/Horizontal
StagesTwo-Stage
Heat Exchanger MaterialStainless Steel
Heating Capacity40, 000 to 120, 000 BTU/h
Fuel TypeNatural gas
Blower Motor TypeMulti-Speed
Blower MotorMulti-Speed ECM
WarrantyLimited lifetime heat exchanger warranty, 10-year parts warranty

Summary

ATTENTION INSTALLING PERSONNEL

II. SAFETY

IV. LOCATION REQUIREMENTS & CONSIDERATIONS

CLEARANCES AND ACCESSIBILITY

Specifies minimum clearances required around the furnace for safety and service.

V. COMBUSTION & VENTILATION AIR REQUIREMENTS

VIII. PROPANE GAS/HIGH ALTITUDE INSTALLATIONS

IX. VENT/FLUE PIPE & COMBUSTION AIR PIPE

PROPER VENT/FLUE AND COMBUSTION AIR PIPING PRACTICES

Best practices for safe and efficient vent/flue and combustion air piping installation.

TERMINATION LOCATIONS

Restrictions and guidelines for proper placement of vent/flue and intake terminations.

NON-DIRECT VENT (SINGLE PIPE) PIPING

Specific installation details for single-pipe venting configurations.

DIRECT VENT (DUAL PIPE) PIPING

Specific installation details for dual-pipe venting configurations.

X. CONDENSATE DRAIN LINES & DRAIN TRAP

STANDARD DRAIN HOSE CONNECTIONS

How to connect drain hoses for standard upright furnace installations.

XI. ELECTRICAL CONNECTIONS

115 VOLT LINE CONNECTIONS

Guidelines for correctly connecting the main 115V AC power supply.

XII. GAS SUPPLY AND PIPING

GAS PIPING CONNECTIONS

Procedures for safely connecting the gas piping to the furnace.

GAS SUPPLY PRESSURE MEASUREMENT

Method for measuring the inlet gas supply pressure accurately.

GAS MANIFOLD PRESSURE MEASUREMENT AND ADJUSTMENT

How to measure and adjust manifold pressure for optimal burner operation.

XIII. CIRCULATING AIR & FILTERS

XIV. STARTUP PROCEDURE & ADJUSTMENT

XV. NORMAL SEQUENCE OF OPERATION

HEATING MODE

The step-by-step process of the furnace operating in heating mode.

XVI. OPERATIONAL CHECKS

XVII. SAFETY CIRCUIT DESCRIPTION

XVIII. TROUBLESHOOTING

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS

Essential precautions to protect electronic components from static discharge.

XIX. MAINTENANCE

ANNUAL INSPECTION

Recommended annual checks for all furnace components and systems.

FILTERS

Importance of filters and their maintenance requirements for unit performance.

XX. BEFORE LEAVING AN INSTALLATION

WIRING DIAGRAM

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