PRODUCT LITERATURE
¤
1996 Lennox Industries Inc.
Dallas, Texas
503,073M
9/98
Supersedes 6/96
£
GSR21Q & 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 death.
Do not store or use gasoline or other
flammable vapors and liquids in the
vicinityofthis or anyother appliance.
Installation and service must be performed by a qualified installer, service agency or the gas supplier.
Litho U.S.A.
:$51,1*
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.
- If you cannot reach your gas supplier, call
the fire department.
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*65 4 9 6(5,(6 3$576 $55$1*(0(17
(Horizontal Application Shown)
ELECTRONIC
IGNITION
SPARK
PLUG
FLAME
SENSOR
FLAPPER
HEAT
EXCHANGER
AIR
VALVE
PRESSURE
SWITCH
PURGE
BLOWER
FIGURE 1
BLOWER
EXHAUST
CONNECTION
VARIABLE SPEED BLOWER MO-
TOR
USED ON GSR21V UNITS ONLY
FILTER
CONTROL
BOX
INTAKE
CONNECTION
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WARNING
Do not use this furnace if any part has been underwater. Immediately call a qualified service technician 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
Beforeattemptingtoperform any serviceormaintenance, turn the electrical power to unit OFF at disconnect switch.
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.
WARNING
Do not set thermostat below 60ºF(16ºC) in heating
mode. Settingthermostat below 60º (16ºC) reduces
the number of heating cycles. Damage to the unit
may occur that is not covered by the warranty.
Useonlyyourhandtopushinormovethegas control
lever or switch. Never use tools. If the lever or switch
willnotpushinormovebyhand,donottrytorepairit,
callaqualifiedservicetechnician.Forceorattempted
repair may result in a fire or explosion.
,03257$17 ',5(&7,216
1- Keep thefurnace area clear and freeof combustible
material, gasoline, and other flammable vapors and
liquids. If installedin aninsulated area,furnace must
bekeptfreeof insulatingmaterial.Insulatingmaterial
may be combustible.
2- DONOTobst ruc tairf lowtouni t.Unitmustrec eive
an unobs truc ted flow ofcombust ion and v entilating air. D o not obstruct termi nation ends of exhaust and intake pipes.
3- DO NOT store chlorineor fluorineproducts near unit
or introduce these products into the combustion air.
These products can cause furnace corrosion.
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4- DO NOT draw the return air from a room where
another gas appliance (ie., a water heater) is
installed. Even though this furnace draws its com-
bustion air from outside of the structure, other gas
appliances that share a utility room may not. When
return air is drawnfrom a room, a negative pressure
is createdin theroom.If agas applianceis operating
in a room with negative pressure, the flue products
can be pulled back down the vent pipe and into the
room. This reverse flow of the flue gas may result in
incomplete combustion and the formation of carbon
monoxide gas. This toxic gas might then be distributed through the house by the furnace duct system.
Your furnace isagas appliance. Itis criticalthat the gas
suppliedtotheunit be completely burnedtoavoidtheproduction of carbon monoxide gas. Complete combustion
of thegas requires, but is not limited to, correct gas pressure and gas flow rate, adequate combustion, air, and
proper venting.
81,7 23(5$7,21
This appliance does not have a pilot. It is equipped
with an ignition system which automatically lights
the burner. Do not try to light by hand.
A-Gas Valve Operation
WARNING
Ifyou donot followthese instructionsexactly,afire
or explosion may result causing property damage,
personal injury or loss of life.
Gas Valve Operation for Robertshaw and White
Rodgers Valves (Figures 2 and 5)
ROBERTSHAW 7200 GAS VALVE
GAS VALVE
SELECTOR ARM
IN OFF
POSITION
WARNING
Carbon monoxide gas is invisible, odorless, and
toxic.
Exposure to this gas can cause personal injury and even
deathtoall occupants,includingpets. Anyitemthat is powered by or gives off heat from a combustion process (includinglawnmowers, automobiles,andfireplaces)hasthe
potential to produce carbon monoxide gas. Because of
this, Lennox recommendsthe use of a carbon monox-
ide detector in your home, even if you do not own gas
appliances. Reliable detectors are available at reason-
ableretailprices.Contact yourindependentLennoxdealer
for more details about this investment in your safety.
Yourfurnace is designedtomeet standardssetby nationalagencies,and tooperatesafelywhen properlyinstalled
and maintained.However,the unit’s performance can be
greatly impactedby the individual installation and theoperating environment. It is your responsibility to ensure
that this appliance is maintained. Proper maintenance is
criticalforyour safetyandthesatisfactory operationofthe
product. Lennox strongly recommends annual in-
spection and maintenance of this appliance. Contact
your independent Lennox dealer for an inspection by a
qualified service technician.
WHITE RODGERS
36E GAS VALVE
GAS VALVE
SHOWN
IN OFF
POSITION
FIGURE 2
1- Set thermostat to lowest setting. See figure 3.
2- Turn off all electrical power to furnace. See figure 4.
3- This appliance Is equipped with an ignition device
which automatically lights the burner. Do
light the burner by hand.
4- Remove unit access panel.
5- OnRoberts haw7200 gasvalve,depres s leveron
gas control and move to
WhiteRodgers 36Egas valves,move switchto
Do not force.
6- Wait five (5) minutes to clear out any gas. Smell for
gas, including near the floor. If you then smell gas,
STOP! Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s instruc-
tions. If you do not smell gas go to next step.
OFF
and release. For
not
try to
OFF
.
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THERMOSTATS
GAS PIPING
DOWNFLOW APPLICATION
MANUAL MAIN
SHUT--OFF VALVE
GROUND JOINT
UNION
GAS VALVE
FIGURE 3
7- On Robertshaw 7200 gas valve, depress lever on
gas control and move to ON and release. For White
Rodgers 36E gas valves, move switch to ON.
8- Replace unit access panel.
9- Turn on all electrical power to unit.
10- Set thermostat to desired setting. See figure 3.
11- If the furnace will not operate, follow the instructions
“ToTurnOffGasToUnit”andcallyour servicetechni-
cian or gas supplier.
B-To Turn Off Gas To Unit
1- Set thermostat to lowest setting. See figure 3.
2- Turn off all electrical power to unit if service is to be
performed. See figure 4.
3- Remove heat section access panel.
4- On Robertshaw 7200 gas valve, depress lever on
gas controland moveto OFFand release. For White
Rodgers 36E gas valves, move switch to OFF.
5- Replace unit access panel.
FOR UNIT TO
OPERATE DISCONNECT
SWITCH MUST
BE IN “ON” POSITION
TYPICAL
FUSE/DISCONNECT
SWITCH BOX MOUNTED
ON FURNACE
FIGURE 4
GAS CONNECTOR*
GAS PIPING
HORIZONTAL APPLICATION
UNIT
REAR PANEL
*Gas connector may be
used for Canadian
installationifacceptable
bylocalauthorityhaving
jurisdiction.
GAS
CONNECTOR*
GROUND
JOINT UNION
GAS VALVE
MANUAL MAIN
SHUT--OFF VALVE
FIGURE 5
6(59,&,1* ),/7(5
Inspect and clean air filters each month. Filters must
be cleaned when dirty to assure proper furnace operation and maintain efficiency.
A-Cleaning Reusable Foam Filter
1- Turn off electrical power to furnace.
2- Remove blower access panel. W a it for blower to stop.
3- Remove filter by sliding up and out of channel.
4- Wash filter with water and a mild detergent. For in-
creased efficiency, filter media should be sprayed
with Filter Handicoater when dry. Filter Handicoater
is RP products No. 418 and is available as Lennox
part No. P-8-5069. If replacement filters is needed,
use Lennox part no. P-8-7831 for 20” x 25” (508 x
635mm) filter.
5- Reinstall filter. Slide filter into top channel and drop
into lower channel.
IMPORTANT-Do not replace foam reusable filters
with throw-away type filters.
6- Replace blower access panel.
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Motors are pre-lubricated for extended bearing life;
no further lubrication is required.
6(59,&(
At the beginning of each heating season, the system
should be checked as follows:
1- Examine the termination ends of the intake and ex-
haust lines for obstructions or blockages.
2- Check the intake and exhaust lines for holes, sag-
ging or broken isolation hangers. If a sag is found in
either line, raise the line and support it with an isola-
tion hanger. Replace any damaged isolation hang-
ers.
3- The return air duct connection should be sealed to
the furnace casing and terminate outside thespace
containing the furnace.
4- Check the physical support of the furnace. It should
besoundwithoutsagging,cracks, gaps, etc.,around
thebase soas toprovide asealbetween thesupport
and the base.
5- Check that there is no obvious signs of deterioration
of the furnace.
6- Inspect and clean condensate drain system forfree
flow of condensate.
IMPORTANT-Ifa changeinthesoundlevel oftheunit
is detected or there is evidence of condensate leakage around the unit, contact your Lennox service
technician.
6(59,&( 5(0,1'(5
CallyourLennoxservicetechnicianiftheunitisinoperative. Before calling, always check the following to
be sure service is required:
1- Be sure electrical switches are ON.
2- Check the room thermostat for proper setting.
3- Replace any blown fuses or reset circuit breakers.
4- Make sure gas valve is on.
5- Blower access panel is in place.
6- Air filter must be clean.
6$)(7< 35(&$87,216
If you discover any of the following, shut down your
unit, and contact an independent Lennox dealer for
an inspection by a qualified technician.
-
If you repeatedly hear any new or unfamiliar sounds
while your unit is operating, there may be a problem.
For example, poorly performing burners can produce
unfamiliar noises.
-
If yousmell anyunusual odors,your unit may be operating improperly. For example, units can give offunfamiliar odors if components are required to operate in
abnormal conditions.
-
Look for visible signs of a malfunctioning unit. Examples include unusual amounts of condensate on windows inside your house, visibly burnt components or
unusual dirt or rust accumulations on the vent pipe or
in the unit.
-
If youexperience headache, nausea, fatigue, or dizziness, the cause could be exposure to carbon monoxidegas. This isoften misdiagnosedas theflu because
symptoms are similar. If you suffer from flu-like symptoms that are exaggerated at home, but seem to subside while you are away from the house, exposure to
carbon monoxide could be the cause.
Your vigilance may pay offin early detectionof a problem
before either personal injury or property damage occurs.
Donothesitatetocontactaqualifiedservicetechnicianas
an investment in your well being.
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Y o ushould expect a service technicianto check the following
items during an annualinspection. Power to the unit must be
shut off for the service technician’s safety.
Fresh air grilles and louvers (on the unit and in the room
where the furnace is installed) - Must be open and unobstructed t o provide combustion air.
Burners- Must beinspectedfor rust,dirt, or signs of water .
V ent pipe - Must be inspected for dirt, signs of water, dam-
aged or sagging unsupported pipe, or disconnected joints.
Unit appearance - Must be inspected for rust, dirt, signs of
water , burnt or damaged wires, or components.
Blower access door - Must be properly in place and provide
a sealbetween thereturn air and the roomwhere thefurnace
is installed.
Return air duct - Must be properly attached and provide an
airtight seal to the unit.
Operating performance -Unit must be observed during operation to monitor proper performance of the unit and the
vent system.
Combustion gases - Flue products must be analyzed and
compared to the unit specifications.
Problems detected during the inspection may make it necessary to temporarily shut down the furnace until the i tems can
be repaired or replaced.
Pay attention to your furnace. Situations can arise between annual furnace inspections that may result in unsafe
operation. For instance, items innocently stored next to the
furnace may obstruct the combustion air supply . This could
cause incomplete combustion and the production of carbon
monoxide gas.
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£
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