Lennox G21Q, G21 V User Manual

PRODUCT LITERATURE

1996 Lennox Industries Inc.
Dallas, Texas

503,072M
8/99
Supersedes 6/96



G21Q & V

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, serĆ
vice agency or the gas supplier.

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.

E1994 Lennox Industries Inc.

G21 (Q & V) Series Parts Arrangement

LIMIT

CONTROL

DIFFERENTIAL

PRESSURE

SWITCH

AIR INTAKE

CONNECTION

AIR VALVE

AND

AIR HOUSING

LOW VOLTAGE

TERMINAL

STRIP

BLOWER

G21Q SERIES

BLOWER MOTOR

DOOR

INTERLOCK SWITCH

GAS VALVE

EXPANSION

TANK

CONTROL

BOX

G21V SERIES

BLOWER MOTOR

FIGURE 1

For Your Safety, Read Before Lighting

WARNING

Do not use this furnace if any part has been underĆ
water. Immediately call a qualified service techniĆ
cian to inspect the furnace and to replace any part
of the control system and any gas control which
has been under water.

WARNING

If overheating occurs or if gas supply fails to shut
off, shut off the manual gas valve to the appliance
before shutting off electrical supply.

CAUTION

Before attempting to perform any service or mainteĆ
nance, turn the electrical power to unit OFF at disĆ
connect switch.

WARNING

Do not set the thermostat below 60_F (16_C) when
it is in heating mode. Setting the thermostat below
60_F (16_C) reduces the number of heating cycles.
Damage to the unit may occur that is not covered by
the warranty.

BEFORE LIGHTING smell all around the appliance
area for gas. Be sure to smell next to the floor beĆ
cause some gas is heavier than air and will settle on
the floor.

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