Goodman GMN SERIES, Installation & Operating Instructions Manual

ACCESSIBILITY CLEARANCE, WHERE GREATER, SHOULD TAKE PRECEDENCE OVER MINIMUM FIRE PROTEC-
TION CLEARANCE.

A gas-fired furnace for installation in a residential garage must be installed so that the burner(s) and the ignition source are
located not less than 18" above the floor and is located or protected to avoid physical damage by vehicles.

An upflow gas-fired furnace must not be installed directly on carpeting, tile or other combustible material other than wood
flooring.

WARNING:

COMBUSTIBLE MATERIAL MUST NOT BE PLACED ON OR AGAINST THE FURNACE JACKET.
THE AREA AROUND THE FURNACE MUST BE KEPT CLEAR AND FREE OF ALL COMBUSTIBLE
MATERIAL INCLUDING GASOLINE AND OTHER FLAMMABLE VAPORS AND LIQUIDS. THE USER
SHOULD BE CAUTIONED THAT THE FURNACE AREA MUST NOT BE USED AS A BROOM CLOSET
OR FOR ANY OTHER STORAGE PURPOSE.

UPFLOW FURNACES ONLY

WARNING:

IMPORTANT NOTICE. A SOLID METAL BASE PLATE IS SUPPLIED WITH THIS FURNACE AND MUST
BE IN PLACE WHEN THE FURNACE IS INSTALLED WITH SIDE AIR RETURN DUCTS. FAILURE TO
LEAVE THIS BASE PLATE INSTALLED COULD CAUSE PRODUCTS OF COMBUSTION TO BE
CIRCULATED INTO LIVING SPACE AND CREATE POTENTIALLY HAZARDOUS CONDITIONS,
INCLUDING CARBON MONOXIDE POISONING. REFER TO SECTION ON “CIRCULATING AIR
SUPPLY” FOR RETURN AIR DUCTWORK INSTRUCTIONS.

DOWNFLOW FURNACES ONLY

Downflow furnaces are not certified for use on combustible flooring unless a special combustible floor base is installed. See
table below for details:

      Furnace Width

Special Base Part Number

                                                    14"

SBM-14

                                                 17 1/2"

SBM-17

                                                    21"

SBM-21

                                                 24 1/2"

SBM-24

Before proceeding with the remaining installation, check the following:

1.) Correct clearances from combustible material
2.) Adequate accessibility for servicing
3.) Flooring is not carpet, tile or any other combustible material (except wood)
4.) In a garage, the furnace has been adequately elevated
5.) Furnace area is free of flammable materials and vapors such as gasoline
6.) The metal base plate used on upflow furnaces with side air returns is in position.
7.) A special base has been installed on downflow furnaces if they are installed on combustible flooring.

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