1998 Lennox Industries Inc.
Dallas, Texas, USA
Armstrong #38152A054
503,969M
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WHAT TO DO IF YOU SMELL GAS:
- Do not try to light any appliance.
- Extinguish any open flames.
- Do not touch any electrical switch; do not
use any phone in your building.
- Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions.
Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other ap-
pliance.
Installation and service must be
performed by a qualified installer,
service agency or the gas supplier.
- If you cannot reach your gas supplier, call
the fire department.
3 - Turn off all electrical power to unit.
Heating Start-Up
4 - This unit is equipped with an ignition device which au-
tomatically lights the pilot. Donot try to light the pilot by
hand.
FOR YOUR SAFETY READ BEFORE LIGHTING
BEFORE LIGHTING, smell all around the appliance area
for gas. Be sure to smell next to the floor because some gas
is heavier than air and will settle on the floor.
5 - Remove burner compartment access panel.
6 - Honeywell VR8205 Gas Valve - Turn knob on gas
valve clockwise
to OFF. Refer to figure 3.
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Robertshaw7200Gas Valve- Depress leverongas
control and move to OFF and release. Do not force.
Refer to figure 4.
Electric shock hazard. Can cause injury
or death. Do not use this furnace if any
part has been under water. Immediately
call a qualified service technician to in-
spect the furnace and to replace any part
of the control system and any gas control
which has been under water.
HONEYWELL VR8205 SERIES GAS VALVE
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Danger of explosion. Can cause injury or
product or property damage. 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.
GAS VALVE SHOWN IN OFF POSITION
ROBERTSHAW 7200 GAS VALVE
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Danger of explosion and fire. Can cause
injury or product or property damage. You
must follow these instructions exactly.
GAS VALVE
SELECTOR ARM
IN OFF
POSITION
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Electric shock hazard. Can cause injury or
death. Before attempting to perform any
service or maintenance, turn the electrical
power to unit OFF at disconnect switch(es).
Unit may have multiple power supplies.
To place the unit into heating operation:
This unit does not have a pilot. It is equipped with an
ignition system which automatically lights the burner.
Do not try to light by hand.
7 - Wait fifteen (15) minutes to clear out any gas. If you
then smell gas, STOP! Immediately call your gas
supplier from a neighbor’s phone. Follow the gas
supplier’s instructions. If you do not smell gas go to
next step.
Gas Valve Operation (Figures
)
1 - STOP! Read the safety information at the beginning of
this section.
8 - Honeywell VR8205 Gas Valve - Turn knob on gas
2 - Set thermostat to lowest setting. See figure 2.
valve counterclockwise
to ON.
Robertshaw 7200 Gas Valve - Depress lever on gas
THERMOSTATS
control and move to ON and release.
9 - Replace the access panel.
10- Turn on all electrical power to unit.
11- Set thermostat to desired setting.
12- If the appliance still will not operate, follow the instruc-
tions “To Turn Off Gas To Unit” and call your service
technician or gas supplier.
To Turn Off Gas To Unit
NOTE - Care should be used when cleaning the coil so that
the coil fins are not damaged.
1 - Set thermostat to lowest setting.
Do not permit overhangingstructures or shrubs to block the
hot condenser air discharge.
2 - Turn off all electrical power to unit if service is to beper-
formed.
Heating System Inspection
3 - Remove burner compartment access panel.
The owner is responsible for ensuring that a qualified ser-
vice technician inspects the entire heating portion of the
unit annually. This inspection should include the burner, the
heat exchanger, and flue for any corrosion or soot accu-
mulation. If any corrosion or soot accumulation is found,
the burner, the heat exchangers, and the flue may have to
be cleaned. The technician should also check the burner
and controls for proper operation.
4 - Honeywell VR8205 Gas Valves - Turn knob on gas valve
clockwise
to OFF. Do not force.
Robertshaw 7200 Gas Valve - Push in gas control le-
ver, move to OFF, and release.
5 - Replace access panel.
Filters
Filters are not supplied. Inspect the filters once a month
and replace or clean them as necessary. DO NOT replace
a permanent-type filter with a disposable filter.
Vent Outlet
Visually inspect vent outlet periodically to prevent excessive
buildup of soot and dirt. If necessary, clean the vent outlet to
maintain unobstructed discharge of the flue products.
Unit is equippedwith an internal filter clip which is located in
indoor coil compartment attached to side of the unit drain
pan.
Burner Flame
The burner flame is not adjustable; however, the flame
should be inspected at the beginning of each heating sea-
son and burners should be cleaned, if necessary. Burner
flame should be blue when burning natural gas.
GCS26 UNIT MODEL
-024, -030, -036
-042
FILTER SIZE
24 in. X 25 in.
28 in. X 25 in.
30 in. X 30 in.
Venting System Inspection
Annually (before heating season) inspect furnace venting
system, vent cap, heat exchanger and burners for corro-
sion, deterioration, or deposits of debris. Remove any ob-
structions.
-048, -060
Maintenance
Normal Maintenance
Contact your Lennox dealer for a periodic unit inspection
by a qualified service technician.
Periodic inspection and maintenance normally consists of
changing or cleaning filters and (under some conditions)
cleaning the main burners.
Rollout Safety Switch
Your gas/electric unit is equipped with a roll-out safety
switch which shuts off the gas supply to the furnace in case
the heat exchanger becomes blocked. If the heating section
of the unit fails to operate due to the functioning of this safety
switch, DO NOT attempt to place the unit into operation.
Contact a qualified service technician.
WARNING
Disconnect power before servicing unit.
WARNING
Call your service technician if unit is inoperative. Before
calling, always check the following to be sure service is re-
quired.
Improper installation, adjustment, alteration, service
or maintenance can causeproperty damage, person-
al injury or loss of life. Installation and service must
be performed by a qualified installer, service agency
or the gas supplier.
1 - Check that electrical disconnect switches are ON.
2 - Check room thermostat for proper setting.
3 - Replace any blown fuses or reset circuit breakers.
4 - Gas valve should be ON.
Motors
Indoor, outdoor fan and vent motors are permanently
lubricated and require no maintenance.
5 - Air filter should not be plugged limiting air flow.
6 - Is gas turned on at meter?
Outdoor Coil
Dirt and debris should not be allowed to accumulate on the
outdoor coil surface or other parts in the air circuit. Clean the
coild when necessary. Use a brush, vacuum cleaner attach-
ment, or other suitable means. If water is used to clean the
coil, be sure the power to unit is shut off prior to cleaning.
7 - Is manual main shut-off valve open?
To keep your Lennox gas heating system in peak operating
condition year after year, contact your independent Lennox
dealer about a planned service program.
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