Lennox GHR32 User Manual



E2001 Lennox Industries Inc.

Dallas, Texas, USA

504,392M
7/2001
Supersedes 504,117M

GHR32

SERIES

GAS FURNACE

If the information in this manual is not
followed exactly, a fire or explosion
may result causing property damage,
personal injury or loss of life.

Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.

Installation and service must be perĆ
formed by a qualified installer, service
agency or the gas supplier.

07/01

*2P0701*

Litho U.S.A.

WARNING

WHAT TO DO IF YOU SMELL GAS:

D Do not try to light any appliance.
D Extinguish any open flames.
D Do not touch any electrical switch; do not

use any phone in your building.

D Immediately call your gas supplier from a

neighbor's phone. Follow the gas suppliĆ
er's instructions.

D If you cannot reach your gas supplier, call

the fire department.

504,392M

Page 1

*P504392M*

GHR32 Parts Identification (Downflow Application Shown)

CABINET

BLOWER MOTOR

2-STAGE CONTROL

BOARD

CONTROL BOX

COMBUSTION AIR PROVING

(PRESSURE) SWITCH

DuralokPlus

HEAT EXCHANGER

ASSEMBLY

TM

TOP CAP

BLOWER ACCESS

DOOR

DOOR INTERLOCK

SWITCH

COMBUSTION AIR

BLOWER

GAS

VALV E

EXHAUST PIPE

CONNECTION

CONDENSATE TRAP

CONNECTION

BURNER BOX

WARNING

Product contains fiberglass wool.

Disturbing the insulation in this product during
installation, maintenance, or repair will expose you
to fiberglass wool dust. Breathing this may cause
lung cancer. (Fiberglass wool is known to the State
of California to cause cancer.)

Fiberglass wool may also cause respiratory, skin,
and eye irritation.

To reduce exposure to this substance or for further
information, consult material safety data sheets
available from address shown below, or contact your
supervisor.

Lennox Industries Inc.

P.O. Box 799900
Dallas, TX 75379-9900

BURNERS

Figure 1

1 - Keep the furnace area clear and free of combustible

2 - DO NOT obstruct the air inlet. Unit must receive an unĆ

3 - DO NOT store chlorine or fluorine products near unit

4 - DO NOT draw the return air from a room where

FRESH AIR INTAKE

CONNECTION

HEATING ACCESS

PANEL

FLAME SIGHT

GLASS

Important Directions

material, gasoline, and other flammable vapors and
liquids. If installed in an insulated area, furnace must
be kept free of insulating material. Insulating material
may be combustible.

obstructed flow of combustion and ventilating air.

or introduce these products into the combustion air.
These products can cause furnace corrosion.

another gas appliance (ie., a water heater) is
installed. Even though this furnace draws its combusĆ

tion air from outside of the structure, other gas apĆ
pliances that share a utility room may not. When return

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