Louisville Tin and Stove Furnace CF354C R User Manual

                
                
                
                
                
                
                
                
COUNTERFLOW  
WALL FURNACE  
INSTALLATION AND  
OPERATING INSTRUCTIONS  
P/N 78111  
REV. 05/03  
R
R
MODEL NUMBERS  
24 VOLT SYSTEM NATURAL GAS CF353C-R CF503C-R CF653C-R  
WITH LOW-BTU  
PILOT  
L.P. GAS  
CF354C-R CF504R  
CF654C-R  
CF557C-R  
CF558C-R  
24 VOLT SYSTEM  
WITH INTERMITTENT  
IGNITION (I.I.D.)  
NATURAL GAS  
L.P. GAS  
CF357C-R  
CF358C-R  
WARNING: 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.  
WHAT TO DO IF YOU SMELL GAS:  
Ø Do not try to light any appliance.  
Ø Do not touch any electrical switch; do not use any phone in  
your building.  
This appliance is equipped  
with a blocked flue switch  
designed to protect against  
improper venting of  
Ø Immediately call your gas supplier from a neighbor’s phone.  
Follow the gas supplier’s instructions.  
Ø If you cannot reach your gas supplier, call the fire department.  
combustion products.  
-
INSTALLATION AND SERVICE MUST BE PERFORMED  
BY A QUALIFIED INSTALLER, SERVICE AGENCY OR  
THE GAS SUPPLIER.  
THIS UNIT IS NOT TO  
BE INSTALLED IN  
MOBILE HOMES.  
WARNING: Operation of this furnace when not connected to a properly installed and main-  
tained venting system can result in Carbon Monoxide (C.O.) poisoning and possible death. For  
your safety, this furnace and the venting system should be inspected at least annually by a quali-  
fied service person.  
The coating selected to provide longer life to the heat exchanger may smoke slightly upon initial firing. Please  
provide adequate ventilation if this occurs.  
This unit is not approved for installation in mobile homes, greenhouses, or environments involving dusty, wet, corrosive,  
or explosive conditions. Such conditions will invalidate the warranty and may create unsafe conditions.  
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SAFETY RULES  
1.  
Improper installation, adjustment, alteration, service or maintenance can cause property damage, bodily injury or death. If you  
do not understand these instructions or your local codes, call local authorities, a qualified installer, service agency, gas supplier,  
or the manufacturer.  
2.  
3.  
Do not install this fan type wall furnace in a recreational vehicle trailer or mobile home.  
Do not operate this fan type wall furnace unless it is connected to a properly installed and maintained vent system. Do not  
exhaust flue gases into the room, wall or attic space for any reason.  
4.  
Locate the thermostat in a room or space that cannot be separated by a door or other means from the room or space in which the  
front outlet grill is installed.  
5.  
6.  
Adequate air for combustion and venting must be provided.  
If rising water may enter the wall furnace, turn off the gas immediately and disconnect the electric service. Do not use the wall  
furnace if any part has been under water. Immediately call a qualified service technician to inspect the wall furnace and to replace  
any part of the control system or any gas control which has been under water.  
7.  
8.  
9.  
10.  
Have your fan type wall furnace and vent system inspected at least annually by a qualified service agency.  
Before cleaning or servicing the wall furnace, turn off the gas and allow it to cool. This will prevent burns.  
Due to high temperatures, the furnace should be located out of traffic and away from furniture and draperies.  
Children and adults should be alerted to the hazards of high surface temperatures and should stay away to avoid burns or  
clothing ignition.  
11.  
12.  
13.  
14.  
Young children should be carefully supervised when they are in the same room as the furnace.  
Clothing or other flammable material should not be placed on or near the furnace.  
Any safety screen guard or gill removed for servicing must be replaced prior to operating the furnace.  
Locate the blocked flue switch and the auxiliary limit switch and push in the reset button. This will reset the switch in case it  
accidentally opened during shipping.  
READ CAREFULLY BEFORE INSTALLING UNIT  
These installation instructions are a general guide, and do not supersede applicable local codes and ordinances. Before planning or  
making the installation, be sure it complies with all phases of the local heating code. Or, in the absence of local codes, the latest edition of  
the National Fuel Gas Code, ANSI.Z223.1. In Canada, see latest edition of CAN1-B149.  
The appliance, when installed must be electrically grounded in accordance with local codes or, in the absence of local codes, the latest  
edition of the National Electrical Code, ANSI/NFPA No. 70. In Canada, see latest edition of CSA C22.1.  
The ANSI standards are available from the American Gas Association, 1515 Wilson Blvd., Arlington, Virginia 22209.  
The NFPA standards are available from the National Fire Protection Association, Batterymarch Park, Quincy, MA. 02269. Canadian  
standards are available from International Approval Services, 178 Rexdale Blvd., Etobicoke, Ontario, Canada M9W 1R3.  
VENTING  
This appliance must be properly connected to a venting system. Consult local ordinances governing venting. Install only UL listed type  
BW 4” oval gas vent. When the vent enters the attic, a listed type B-1 round flue pipe may be used. See Figure 1, Page 4.  
Vent pipe must connect to the wall furnace or header plate with a “B” vent base plate and terminate with a cap at a point at least 12 ft. above  
the bottom of the wall furnace and two feet above any obstacle within a 10 foot radius and at least 3 foot above the roof.  
Provisions must be made for adequate combustion and ventilation air. This appliance must not be connected to a chimney flue serving a  
separate solid fuel burning appliance.  
All type “B” vents shall extend in a generally vertical direction with offsets not exceeding 45 degrees, except that a vent system having not  
more than one 60 degree offset may be allowed.  
Any angle greater than 45 degrees from the vertical is considered horizontal. The total horizontal run of a vent plus the horizontal vent  
connector shall be not greater than 75 percent of the vertical height of the vent. Any offsets used should be as far above the drafthood as  
possible to allow a venting action to begin before any restriction is encountered.  
Page 3  
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VENTING - CONTINUED  
More  
than 10’  
10’ or  
Less  
Height above any  
roof surface  
within 10’  
10’  
horizontally  
Ridge  
2’ Min.  
2’ Min.  
Ridge  
3’ Min.  
3’ Min.  
Chimney  
Chimney  
FIGURE A  
This appliance is equipped with a blocked flue switch.  
Listed  
Vent Top  
2’ Min.  
3’  
WARNING: Do not bypass the blocked flue switch. To  
do so could expose the consumer to property damage,  
personal injury or possible death.  
Storm Collar  
Roof  
Flashing  
Oval to round  
adapter  
This switch, when activated, will interrupt the electrical circuit between  
the transformer and the gas valve causing the main burner flame to  
extinguish. The main burner will not re-light until the blocked flue switch  
has been manually reset. To reset the switch, after locating it between  
the bottom of the fan shroud and the top of the draft diverter, simply  
push the red button on top of the switch. If the homeowner experiences  
this problem, then the vent system must be checked and corrected.  
NOTE: An existing vent that has worked for years may not be adequate  
for today’s appliances because of higher efficiency requirements that  
result in lower stack temperatures.  
Listed “BW”  
Vent Pipe  
12’  
Min.  
Base Plate  
Ceiling  
Plate  
Spacer  
Lances  
Header  
Plate  
2x4 Wall  
Stud  
WARNING: Operation of this wall furnace when not connected to a  
properly installed and maintained venting system or tampering with  
the blocked flue switch can result in Carbon Monoxide (CO)  
poisoning and possible death.  
(SEELISTOFPOSSIBLECAUSESANDCORRECTIONSONPAGE19).  
FIG. 1 - VENT INSTALLATION  
All type “B” vents shall extend in a generally vertical  
direction with offsets not exceeding 45 degrees, except  
that a vent system having not more than one 60 degree  
offset may be allowed.  
Red  
Button  
Red  
Button  
Any angle greater than 45 degrees from the vertical is  
considered horizontal. The total horizontal run of a vent  
plus the horizontal vent connector shall be not greater  
than 75 percent of the vertical height of the vent.  
Blocked  
Flue  
Switch  
Blocked  
Flue  
Switch  
Any offsets used should be as far above the drafthood as  
possible to allow a venting action to begin before any  
restriction is encountered.  
Draft Diverter  
Relief Opening  
Draft Diverter  
Relief Opening  
“CF35” Series Counterflow  
Page 4  
“CF50/55/65” Series Counterflow  
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COMBUSTIONANDVENTILATIONAIR  
ALL COMBUSTION AIR FROM ADJACENT INDOOR  
SPACES THROUGH INDOOR COMBUSTION AIR  
OPENINGS  
F
I
G
U
R
E
When installed, this gas appliance must be provided with fresh  
air for combustion, ventilation, and dilution of hot flue gases.  
The minimum required volume of the area where the appliance is  
installed should be 50 cubic feet per 1,000 btu/hr.  
UL Listed Vent Cap  
UL Listed Gas Vent  
If installed in an area of the home that is considered an unconfined  
space, the natural infiltration of air around windows and doors  
will be adequate. If the area is considered a confined space (less  
than 50 cubic feet per 1,000 btu), fresh air can be supplied by  
providing two permanent openings into adjoining rooms. Each  
opening shall have a minimum free area of one square inch per  
1,000 btu per hour of the total input rating of all gas appliances in  
the confined space, but not less than 100 square inches. One of  
the openings shall be within 12 inches of the ceiling and one  
within 12 inches of the floor. See Figure A.  
Opening  
Opening  
A
ALL COMBUSTION AIR FROM OUTDOORS, INLET  
AIR FROM VENTILATED CRAWL SPACE AND  
F
I
G
U
R
E
If the home is of unusually tight construction (new and remodeled  
homes), free air must be supplied through opening(s) to the  
outdoors. This can be accomplished by providing 2 permanent  
openings, one commencing within 12 inches of the ceiling and  
one within 12 inches of the floor. These openings shall  
communicate directly with the outdoors, or spaces that  
communicate freely with the outdoors, such as a ventilated attic  
and crawl space through galvanized or equivalent corrosion-  
resistant ducts. Exception: unobstructed stud and joist spaces  
are acceptable ducts provided that not more than one fire block  
is removed. Special provisions must be taken to insure that  
these stud and joist spaces cannot be blocked with insulation or  
other objects. Each of these openings using vertical ducts shall  
have a minimum free area of one square inch per 4,000 btu/hr of  
total input rating of all gas appliances. See Figure B and C. If  
horizontal ducts are used, the minimum free area shall be one  
square inch per 2,000 btu/hr of total input rating of all gas  
appliances.  
OUTLET AIR TO VENTILATED ATTIC  
UL Listed Vent Cap  
UL Listed Gas Vent  
Ventilation Louvers (each  
end of attic)  
Outlet Air  
Inlet Air  
B
Ventilation Louvers for unheated crawl space  
ALL COMBUSTION AIR FROM OUTDOORS  
THROUGH VENTILATED ATTIC  
UL Listed Vent Cap  
F
I
G
U
R
E
UL Listed Gas Vent  
Ventilation Louvers (each  
end of attic)  
Fresh make-up air can also be provided through a duct to one  
permanent opening commencing within 12 inches of the ceiling.  
The minimum free area of this opening shall be one square inch  
per 3,000 btu/hr of the total input rating of all gas appliances but  
not less than the sum of the areas of all vent connectors in the  
space. See Figure D.  
Inlet  
Grille  
Outlet Air  
Inlet Air Duct (ends 1 ft.  
[300mm] above floor)  
Inlet  
Grille  
When calculating the amount of fresh air needed you must include  
make-up air requirements for the operation of exhaust fans, kitchen  
ventilation systems, clothes dryers, and fireplaces.  
C
ALL COMBUSTION AIR FROM OUTDOORS  
Additional information can be found in the latest edition of ANSI  
Z223.1 (National Fuel Gas Code).  
THROUGHSINGLECOMBUSTIONAIROPENING  
F
I
UL Listed Vent Cap  
UL Listed Gas Vent  
G
U
R
E
Opening  
Alternate Opening  
Location  
D
Page 5  
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USING ADJACENT STUD SPACE FOR ALL  
COMBUSTION AIR FROM OUTSIDE  
LOCATION AND SPECIAL PRECAUTIONS  
The wall furnace should be located near the center of  
the house for best heat distribution.  
HOLESCONNECTINGTO  
VENTILATED ATTIC  
CEILING  
PLATE  
If the area where the appliance is to be installed contains  
carpeting, tile or combustible materials, other than wood  
flooring, the appliance shall be installed on a metal plate,  
wood panel or other non-combustible materials. The use  
of ceramic or quarry tile is acceptable and will provide a  
surface that is easily cleaned. This material is to extend  
the full width and depth of the appliance. If side or rear  
warm air outlets are being installed, see figure 14 – 18,  
See page 16 and 17.  
AIR  
GRILLE  
FLOOR  
PLATE  
HOLESCONNECTINGTOVENTILATED  
CRAWL SPACE  
BASED ON 4,000 BTU OF TOTAL INPUT RATING  
OF ALL GAS APPLIANCES, THE HEATER ONLY  
REQUIRES A MINIMUM FREE AREA OF:  
4” Minimum  
SQUARE  
IN.  
6.25  
HOLE  
SIZE =  
1”  
1.5”  
2”  
2.5”  
3”  
SQUARE  
IN.  
.785  
1.76  
3.14  
4.90  
7.065  
BTU  
25,000  
35,000  
50,000  
55,000  
65,000  
8.75  
12.50  
13.75  
16.25  
ROUGH-IN INSTRUCTIONS  
4” Minimum  
In selecting a location for installation, it is necessary to  
provide adequate accessibility clearances for servicing  
and proper operation.  
FIGURE 2  
Minimum clearance from cabinet to combustible  
construction:  
115 V.A.C.  
Line  
In  
Side Wall  
Floor  
Ceiling  
-
-
-
4”  
0”  
4”  
B-W Vent  
Pipe  
2x4  
Stud  
See Figure 2. The unit may be recessed and rest  
directly against side studs and the inside surface of the  
rear wall.  
Header Plate  
Wire Nut (not provided)  
ELECTRICAL ROUGH-IN  
Rough in 115 v. wiring, terminating inside the junction  
box located on top of header plate for recessed, or in  
a receptacle box (not provided) for flush mount.  
Consult local codes or ordinances. See Figure 3.  
Switch Box Cover Plate  
MODEL NUMBER  
CF353C, CF354C  
CF503C, CF504C  
CF653C, CF654C  
AMPS  
1.95  
2.25  
2.25  
FIGURE 3  
CF357C  
CF358C  
CF557C  
CF558C  
2.2  
2.25  
2.5  
2.55  
Page 6  
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GAS ROUGH-IN  
Check local codes for requirements as to the size and type of  
gas line required. See Figure 5 for location of gas inlet holes  
in furnace cabinet.  
Compounds used on threaded joints of gas pipe should be  
resistant to the action of liquefied petroleum gases. The gas  
line joints must be checked for leaks. This should be done  
with a soap solution – watching for bubbles on all  
connections. NEVER USE AN EXPOSED FLAME TO  
CHECK FOR LEAKS.  
A manual valve equipped with a 1/8” NPT plugged tapping  
accessible for test gauge connection should be installed  
immediately upstream of the gas supply connection to the  
appliance. Some codes and ordinances require that the  
manual valve be located outside the appliance. See Figure  
4.  
Gas  
Supply  
Line  
Drip  
Leg  
Manual  
cut off  
valve  
1/8 N.P.T.  
Pressure Tap  
The appliance and its individual shut off valve must be  
disconnected from the gas supply piping system during any  
pressure testing of that system at test pressures in excess of  
½ psig.  
FIGURE 4  
The appliance must be isolated from the gas supply piping  
system by closing its individual manual shut off valve during  
any pressure testing of the gas supply piping system at test  
pressures equal to or less than ½ pig.  
1-1/2” Dia.  
5”  
Knockout  
It is required by the National Fuel Gas Code that a drip line  
be installed near the gas inlet. This should consist of a vertical  
length of pipe tee connected into the gas line that is capped  
on the bottom in which condensation and foreign particles  
may collect.  
4”1-1/2” Dia.  
Gas Inlet  
Hole  
8”  
2”  
FIGURE 5  
Page 7  
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INSTALLATION / WHEN RECESSED  
(UP TO 9-1/4”)  
INSTALLATION  
WHEN INSTALLED FLUSH TO WALL  
STEP 1.Cut out floor plate between 2x4 studs, so heater  
will set flat on floor.  
STEP 1.After locating furnace, cut 3-1/2”x12” rectangular hole  
in ceiling between ceiling joists. Make sure gasket is in  
position on the top of the furnace casing around the  
flue vent opening. Remove vent collar from top of header  
plate and place over flue extension and fasten to  
matching holes in casing top, using screws from header  
plate. Install B vent type base plate (not supplied) to  
top of vent collar. Install ceiling plate spacer to back  
wall, centered between studs. Install B type vent to top  
of furnace, terminating at least 12’ above the floor and  
at least 2’ above the roof line.  
STEP 2.Fasten furnace to wall. To secure top of furnace to wall,  
loosen top screws on back casing and raise tabs up.  
Tighten screws. Screw through hole in top of tabs into  
anchors (not provided). Secure bottom using two holes  
provided in bottom of casing. (Optional) Cover exposed  
vent with a vent enclosure kit, Part Number 16VE-A or  
36VE-A (not included).  
STEP 3.Make electrical connection of 115 V. wiring into  
receptacle box (not provided) mounted on a wall. Plug  
power cord from top of heater into receptacle. Connect  
thermostat wire with thermostat wires extending from  
top of heater. According to installation instructions with  
thermostat, do not run wires in same stud space with  
vent system. Thermostat should be a minimum of 4’  
from heater and 5’ from floor.  
STEP 2.Make electrical connection of 115 V. wiring into  
junction box provided on top of header plate.  
STEP 3.Attach the base plate (purchased with the vent pipe)  
to the header plate using two No. 8 sheet-metal  
screws through the pre-punched holes. See Figure  
B.  
STEP 4.Square up and nail header plate in place between  
2x4 studs placed on 16” centers (14-3/8” between  
studs). For distances from top of header plate to  
floor, see Figure 6.  
STEP 5.Remove double ceiling plate between studs. Install  
one ceiling plate spacer across the cut out in ceiling  
plate. Install vent pipe into position, be sure to  
lock bottom of vent pipe into the base plate. Nail  
second ceiling plate spacer in place. See Figure  
B.  
STEP 6.If the vent continues through additional stories  
within the 2x4-stud space, then fire stop spacers  
must be installed at the second and subsequent  
ceiling levels. See Figure C.  
STEP 7.To place furnace into position, grasp furnace and  
lift so furnace flue vent and header plate vent  
opening engage. Plug power cord from top of  
heater into receptacle on bottom of the header plate,  
see Figure 3. Run thermostat wire through a drilled  
hole into an adjacent stud space. Do not route it  
behind the header plate. To do so may cause the  
thermostat wiring to chaff resulting in the  
appliance operating continually. Connect  
thermostat wire with thermostat wires extending  
from top of heater. Lift furnace upward and swing  
bottom into wall, see Figure 7. Secure furnace in  
place using 2 holes provided in bottom of casing.  
STEP 8.Make gas connection using connector the same size  
as gas connection of furnace. CHECK ALL  
CONNECTIONS FOR GAS LEAKS WITH  
LEAK DETECTOR SOLUTION. DO NOT USE  
OPEN FLAME.  
STEP 4.Make gas connection using connector the same size as  
gas connection of furnace.  
CHECK ALL  
CONNECTIONS FOR GAS LEAKS WITH LEAK  
DETECTOR SOLUTION. DO NOT USE OPEN  
FLAME.  
STEP 5.Replace and fasten all front panels.  
B-W Vent  
Header  
Plate  
STEP 9.Replace and fasten front panels to furnace.  
35,000 - 80-3/16”  
50,000 - 82-7/8”  
55,000 - 88-7/8”  
65,000 - 88-7/8”  
NOTE: FOR PROPER COMBUSTION, MAKE  
SURE UNITS ARE LEVEL FRONT TO BACK  
AND SIDE TO SIDE.  
FIGURE 6  
FIGURE 7  
Page 8  
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Installation of B-W Gas Vent  
for one-story buildings or for  
first floor of multi-story  
buildings.  
Firestop spacers supplied  
by manufacturer of B-W  
Gas Vent  
Installation of B-W Gas Vent  
for each subsequent ceiling or  
floor level of multistory buildings.  
Ceiling plate spacers to center  
B-W Gas Vent in stud space -  
nail securely at both ends.  
Plate cut away  
to provide passage  
of B-W Gas Vent  
Plate cut away for full  
width of stud space to  
provide ventilation.  
Studs on  
16 inch centers  
Sheet metal screw base  
plate to header  
Use manufacturer’s method of  
fastening pipe to base plate.  
Header plate of vented wall furnace  
(also acts as firestop)  
Nail firestop spacer securely  
FIGURE B  
FIGURE C  
NATURAL GAS  
CONTROLS  
SPECIFIC ELEVATIONS  
All controls are pre-assembled at the factory. The normal  
manifold pressure should be 3.5” w.c. for Natural Gas and  
10” w.c. for L.P. Gas. The maximum inlet pressure in the  
gas supply pipe should never exceed 7.0” w.c. for Natural  
Gas or 14” w.c. for L.P. Gas. The minimum inlet pressure  
in the gas supply pipe should never be lower than 4.5”  
w.c. for Natural Gas or 11” w.c. for L.P. Gas.  
Model  
No.  
0 to  
2,000 -  
4,000’  
36  
4,000 -  
6,000’  
37  
6,000 -  
8,000’  
38  
8,000 -  
10,000’  
41  
2,000’  
CF353C 34  
CF357C 34  
CF503C 3.4mm  
CF557C 29  
CF653C 26  
36  
37  
38  
41  
35  
32  
30  
31  
31  
32  
30  
30  
31  
27  
28  
29  
ORDER KIT #49840 2287-1 HIGH ALTITUDE KIT  
Pilot Adj.  
Screw  
Pilot Adj.  
Screw  
L.P. GAS  
SPECIFIC ELEVATIONS  
Model  
No.  
0 to  
2,000 -  
4,000’  
52  
4,000 -  
6,000’  
52  
6,000 -  
8,000’  
53  
8,000 -  
10,000’  
2,000’  
CF354C 50  
CF358C 50  
CF504C 45  
CF558C 2.15mm  
CF654C 42  
54  
52  
52  
53  
54  
50  
49  
47  
47  
48  
49  
ROBERTSHAW  
7200IPER-SO4  
ROBERTSHAW  
7200ER-SO4  
45  
47  
48  
43  
44  
45  
ORDER KIT #49840 2287-1 HIGH ALTITUDE KIT  
I.I.D. PILOT  
FIGURE 10-B  
STANDING PILOT  
FIGURE 10-A  
The appliance is orificed at the factory for elevations up  
to 2,000 feet. If installed above 2,000 feet, the BTU input  
must be reduced 4% per 1,000 feet. See the following  
orifice chart for the proper orifice for a specific elevation.  
3/8” TO 1/2”  
3/8” TO  
1/2”  
PILOT ADJUSTMENT  
Locate the pilot adjustment screw on the valve. The pilot  
flame should surround at least the top 3/8” of the powerpile  
(pilot generator) or flame sensor (see Figure 8). The pilot  
is unregulated so it will be operating at inlet line pressure  
(maximum 7” w.c. for Natural Gas and 11” w.c. for  
Propane Gas). To decrease the pilot flame, turn the screw  
clockwise (approximately six full turns to bottom of pilot  
light channel) until you produce sufficient flame at the  
minimum noise level.  
STANDING PILOT  
FIGURE8-A  
I.I.D. PILOT  
FIGURE8-B  
PILOT FLAME ADJUSTMENT  
PILOT FLAME SHOULD ENVELOP 3/8 TO ½ INCH  
OF THE TIP OF THE GENERATOR.  
Page 9  
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CF353C, CF354C, CF503C, CF504C, CF653C, CF654C - -  
STANDING PILOT  
FOR YOUR SAFETY READ BEFORE LIGHTING  
WARNING: If you do not follow these instructions exactly, a fire or explosion may result  
causing property damage, personal injury or loss of life.  
If you cannot reach your gas supplier, call the fire  
department.  
A. This appliance has a pilot, which must be lighted by  
hand. When lighting the pilot, follow these instruc-  
tions exactly.  
C. Use only your hand to push in or turn the gas control  
knob. Never use tools. If the knob will not push in or  
turn by hand, don’t try to repair it, call a qualified  
service technician. Force or attempted repair may result  
in a fire or explosion.  
B. 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.  
WHAT TO DO IF YOU SMELL GAS:  
D. Do not use this appliance if any part has been under  
water. Immediately call a qualified service technician to  
inspect the appliance and to replace any part of the  
control system and any gas control which has been  
under water.  
Do not try to light any appliance.  
Do not touch any electric 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.  
LIGHTING INSTRUCTIONS  
1. STOP! Read the information on the safety label.  
2. Set thermostat to lowest setting.  
3. Turn off all electric power to the appliance.  
4. Remove cabinet door.  
5. Push in gas control lever slightly and slide right to  
“OFF”.  
PILOTBURNER  
The pilot is located  
on the side of the  
burner  
MAX. (HIGH)  
PRESSURE REGULATOR  
Gas Control  
Lever  
8. Slide gas control lever left  
to “SET” and hold.  
NOTE: Lever  
cannot be  
moved to  
“OFF” unless  
it is pushed  
in slightly.  
Do not force.  
Immediately begin a series of pushing and releasing  
the red piezo ignitor button, while observing the pilot.  
Continue to spark until pilot is lit. Continue to hold  
the gas control lever to “SET” for about one (1)  
minute after the pilot is lit. Release the gas control  
lever and it will return to “PILOT”. Pilot should  
remain lit. If pilot goes out, repeat steps 5 thru 8.  
If gas control lever does not return to “PILOT” when  
released, STOP and immediately call your service  
technician or gas supplier.  
STEP PRESSURE REGULATOR  
If the pilot will not stay lit after several tries, slide the  
gas control lever to “OFF” and call your service  
technician or gas supplier.  
6. Wait five (5) minutes to clear out any gas. Then smell  
for gas, including near the floor. If you smell gas,  
STOP! Follow “B” in the information on the safety  
label. If you don’t smell gas, go to the next step.  
7. Locate red piezo ignitor button. Locate pilot. (Follow  
metal pilot tube from gas control).  
9. Slide gas control lever left  
10. Replace cabinet.  
11. Turn on all electric to the appliance.  
12. Set thermostat to desired setting.  
to “ON”.  
TO TURN OFF GAS TO APPLIANCE  
4. Push in gas control lever slightly and slide right  
to “OFF”. Do not force.  
5. Replace cabinet door.  
1. Turn thermostat to lowest setting.  
2. Turn off all electric power to the appliance if service is  
to be performed.  
3. Remove cabinet door.  
Page 10  
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CF357C, CF358C, CF557C, CF558C - I.I.D. PILOT  
FOR YOUR SAFETY READ BEFORE LIGHTING  
WARNING: If you do not follow these instructions exactly, a fire or explosion may result  
causing property damage, personal injury or loss of life.  
A. This appliance is equipped with an ignition device  
which automatically lights the pilot. Do not try to  
light the pilot by hand.  
If you cannot reach your gas supplier, call the fire  
department.  
B. 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.  
C. Use only your hand to push in or turn the gas control  
knob. Never use tools. If the knob will not push in or  
turn by hand, don’t try to repair it, call a qualified service  
technician. Force or attempted repair may result in a fire  
or explosion.  
WHAT TO DO IF YOU SMELL GAS:  
Do not try to light any appliance.  
Do not touch any electric 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.  
D. Do not use this appliance if any part has been under  
water. Immediately call a qualified service technician to  
inspect the appliance and to replace any part of the control  
system and any gas control which has been under water.  
LIGHTING INSTRUCTIONS  
1. STOP! Read the information on the safety label.  
2. Set the thermostat to its lowest setting.  
3. Turn off all electric power to the appliance.  
4. This appliance is equipped with an ignition device  
which automatically lights the pilot. Do not try to  
light the pilot by hand.  
5. Remove cabinet door.  
6. Push in gas control lever slightly and slide right  
to “OFF”.  
7. Wait five (5) minutes to clear out any gas. Then smell for  
gas, including near the floor. If you smell gas, STOP!  
Follow “B” in the information on the safety label. If you  
don’t smell gas, go to the next step.  
8. Slide gas control lever left  
to “ON”.  
MAXIMUM (HIGH)  
PRESSURE REGULATOR  
GASCONTROL  
LEVER  
NOTE:  
Lever  
cannot be  
moved to  
“OFF” unless  
it is  
MAXIMUM (HIGH)  
PRESSURE REGULATOR  
GAS CONTROL  
LEVER  
NOTE: Lever  
pushed in  
slightly.  
Do not  
cannot be  
moved to  
“OFF” unless  
it is  
force.  
pushed in  
slightly.  
Do not  
STEPPRESSUREREGULATOR  
9. Replace cabinet door.  
force.  
10. Turn on all electric power to the appliance.  
11. Set thermostat to desired setting.  
12. If the appliance will not operate, follow the instructions  
“TO TURN OFF GAS TO APPLIANCE” and call your  
service technician or gas supplier.  
STEP PRESSURE REGULATOR  
TO TURN OFF GAS TO APPLIANCE  
4. Push in gas control lever slightly and slide right  
“OFF”. Do not force.  
5. Replace cabinet door.  
to  
1. Turn thermostat to it’s lowest setting.  
2. Turn off all electric power to the appliance if  
service is to be performed.  
3. Remove cabinet door.  
Page 11  
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OPERATION  
PROPER BURNER FLAME  
This unit uses a “step open” valve. When heat is  
called for the gas valve opens at a reduced manifold  
(outlet) pressure to insure a safe, quiet ignition.  
After 10 – 20 seconds the valve automatically steps  
up to normal manifold outlet pressure to provide  
proper BTU input for the remainder of the heat  
cycle.  
A proper flame will have a dark blue inner mantle  
that sits right on top of the burners with a lighter  
blue outer mantle rising above the burner, (See  
Figure 11). There may be some yellow where the  
pilot flame and burner flame meet. There is no  
primary air adjustment on the burner, and proper  
flame is assured since the correct manifold pressure  
and orificing has been done at the factory. NOTE:  
It is advised that the burner flames be checked at  
least twice during the heating season for any changes  
in burner flame characteristics. The appliance area  
must be kept clear and free from combustible  
materials, gasoline, and other flammable vapors and  
liquids. This heater comes from the factory with  
the proper burner orifice for elevations up to 2,000  
feet. Heaters installed above 2,000 feet must be  
derated 4% for every 1,000 feet. For the proper  
orifice size find the Model Number and elevation  
on the orifice chart (See CONTROLS). Replace  
burner orifice.  
After the heat exchanger has warmed sufficiently,  
the fan will automatically come on to efficiently  
transfer the heat into the room. NOTE: All but the  
35,000 BTU unit (which is one speed) have an  
automatic two-speed fan. In a new installation or  
on fall start-up in a very cold room, some on-off  
cycling of the fan may occur if the heat exchanger  
cools too much. The burner, however, will continue  
to operate and the fan cycle until the thermostat is  
satisfied.  
5” to 7”  
Approx.  
1”  
FIGURE11  
Page 12  
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TERMINAL BLOCK WIRING DIAGRAM  
FAN/LIMIT SWITCH (Brown)  
FAN/LIMIT SWITCH (Brown)  
POWER CORD (Black)  
SELECTOR  
SWITCH  
(Red)  
POWER CORD (Black)  
TRANSFORMER  
(Black)  
LIMIT  
TRANSFORMER(Black)  
LIMIT  
SWITCH  
(Blue)  
SWITCH  
(Blue)  
MOTOR  
(Red)  
MOTOR (White)  
MOTOR (White)  
FAN  
SWITCH  
(Black)  
POWER  
CORD  
(Green)  
POWER  
CORD  
(Green)  
SELECTOR  
SWITCH  
(Black)  
TERMINAL BOARD  
GROUND (Green)  
TERMINAL BOARD  
GROUND (Green)  
MOTOR (Black)  
TRANSFORMER (Black)  
POWER CORD (White)  
MOTOR (Black)  
TRANSFORMER (Black)  
POWER CORD (White)  
MOTOR (Green)  
MOTOR (Green)  
P/N 91123  
P/N 91122  
CF353C, CF354C, CF357C, CF358C  
CF503C, CF504C, CF557C, CF558C, CF653C, CF654C  
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper  
and dangerous operation. Verify proper operation after servicing.  
AUXILIARY LIMIT SWITCH  
For your safety this furnace is equipped with a manual reset auxiliary limit switch. In case of failure by the  
primary limit switch, this switch will shut the valve down completely before unsafe temperatures are reached.  
After a cool down period, switch must be manually reset. If outages persist, call a qualified service person.  
MAINTENANCE INSTRUCTIONS  
1.  
Installation and repair must be done by a qualified service person. The appliance should be inspected  
before use and at least annually by a professional service person. More frequent cleaning may be  
required due to excessive lint from carpeting, bedding material, etc. It is imperative that control  
compartments, burners, pilot burners, circulating air passageways and venting systems of the appliance  
be kept clean.  
2.  
3.  
The bearings of the motor should be oiled every six months with S.A.E. 20 oil.  
The appliance area must be kept clear and free of any combustible materials, gasoline and other  
flammable vapors and liquids.  
4.  
5.  
It is essential that the flow of combustion and ventilation air not be obstructed.  
Periodic examination of the entire ventilation system as a routine part of the safety performance check  
is recommended on an annual basis.  
IMPORTANT: Keep burner and control compartment clean. Vacuum burner compartment at the start of  
the heating season or as often as needed.  
NOTE: It is advised that the burner flames be checked at least twice during the heating season for any  
changes in burner flame characteristics.  
115 VAC 60 HZ – Less than 12 Amps. If any of the original wire as supplied with this appliance must be  
replaced, it must be replaced with type thermoplastic 105-degree C wire or its equivalent.  
Page 13  
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CF353C, CF354C  
STANDING PILOT  
CF503C, 504C, 653C, 654C  
CF503C, CF504C  
CF653C, CF654C  
PICTORIAL SCHEMATIC  
CF353C, CF354C  
PICTORIAL SCHEMATIC  
POWER  
CORD  
THERMOSTAT  
POWER  
CORD  
THERMOSTAT  
WHITE  
WHITE  
BLACK  
BLACK  
RED  
BLACK  
BLACK  
MOTOR  
RED  
BROWN  
BLACK  
MOTOR  
BROWN  
BLACK  
BLUE  
TRANSFORMER  
GREEN  
TRANSFORMER  
BLUE  
BLUE  
BLACK  
BROWN  
SPILL  
SWITCH  
BROWN  
SPILL  
SWITCH  
LIMIT  
FAN  
SWITCH  
SWITCH  
LIMIT  
SWITCH  
FAN  
SWITCH  
SELECTOR  
SW. BLACK  
AUXILIARY  
LIMIT SWITCH  
AUXILIARY  
LIMIT SWITCH  
GAS VALVE  
GAS VALVE  
AMPS  
2.25  
AMPS  
1.95  
SELECTOR  
FAN  
FAN  
SWITCH  
SWITCH  
SWITCH  
MOTOR  
MOTOR  
LIMIT  
SWITCH  
LIMIT  
SWITCH  
115 V.A.C.  
TRANSFORMER  
24 V.A.C.  
115 V.A.C.  
TRANSFORMER  
24 V.A.C.  
THERMOSTAT  
THERMOSTAT  
CF503C, CF504C  
CF653C, CF654C  
LADDER  
CF353C  
CF354C  
LADDER  
SCHEMATIC  
SCHEMATIC  
AUXILIARY  
LIMIT SWITCH  
AUXILIARY  
LIMIT SWITCH  
SPILL  
SWITCH  
SPILL  
SWITCH  
GAS  
VALVE  
GAS  
VALVE  
Page 14  
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CF357C, CF358C  
I.I.D.  
CF557C, CF558C  
CF357C, CF358C  
PICTORIAL SCHEMATIC  
CF357C, CF358C  
PICTORIAL SCHEMATIC  
THERMOSTAT  
THERMOSTAT  
POWER  
CORD  
POWER  
CORD  
WHITE  
RED  
WHITE  
BLACK  
BLACK  
RED  
BLACK  
BLACK  
MOTOR  
MOTOR  
BROWN  
BLACK  
BROWN  
BLACK  
BLUE  
GREEN  
TRANSFORMER  
TRANSFORMER  
BLUE  
BLUE  
BLACK  
BROWN  
BROWN  
SPILL  
SPILL  
SWITCH  
SWITCH  
SELECTOR  
SW.BLACK  
LIMIT SWITCH  
FAN SWITCH  
FAN  
SWITCH  
LIMIT SWITCH  
AUXILIARY  
LIMIT SWITCH  
AUXILIARY  
LIMIT SWITCH  
PILOT  
PILOT  
BLACK  
TH  
PV  
Sense  
MV  
MV/PV  
TR  
GND  
IGN  
TH  
PV  
Sense  
MV  
MV/PV  
TR  
GND  
IGN  
GAS VALVE  
GAS VALVE  
P
C
M
IGNITION  
MODULE  
P
C
M
IGNITION  
MODULE  
MODELNO.  
CF557C  
AMPS  
2.5  
MODELNO.  
CF357C  
AMPS  
2.2  
CF558C  
2.55 SELECTOR  
CF358C  
2.25  
SWITCH  
FAN  
FAN SWITCH  
SWITCH  
MOTOR  
MOTOR  
LIMIT SWITCH  
LIMIT SWITCH  
115 V.A.C.  
115 V.A.C.  
TRANSFORMER  
24 V.A.C.  
TRANSFORMER  
24 V.A.C.  
THERMOSTAT  
THERMOSTAT  
CF557C  
CF558C  
LADDER  
CF357C  
CF358C  
LADDER  
SCHEMATIC  
SCHEMATIC  
AUXILIARY  
LIMIT SWITCH  
SPILL  
SWITCH  
SPILL  
SWITCH  
AUXILIARY  
LIMIT SWITCH  
IGNITION  
MODULE  
IGNITION  
MODULE  
GAS  
GAS  
VALVE  
VALVE  
Page 15  
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ROUGH-INS FOR REAR OR SIDE DISCHARGE  
Install plastergrounds as shown in Figure 12 and Figure 13.  
NOTE: When side discharge is being used, furnace should be set exactly 4” from side wall.  
Plaster  
Ground  
1/2”  
Plaster  
Ground  
14-11/16”  
REAR  
SIDE  
FIGURE 12  
FIGURE13  
OPTIONAL ACCESSORY KITS  
REAR REGISTER KIT (Flush Mount)  
(See Figure 14)  
REAR DISCHARGE KIT (Recessed)  
1.  
2.  
3.  
Use optional kit No. 407RR-A.  
1.  
2.  
3.  
Use optional kit No. 406RR-A.  
Cut openings in wall as shown in Figure 13.  
Cut out and remove embossed section on casing  
rear.  
Remove knockout from inner liner.  
Place inner boot from kit through opening,  
matching flanges of boot and knockout.  
Mark screw holes and remove boot.  
Drill holes with a 1/8” drill.  
Cut openings in drywall as shown in Figure 12.  
Position plasterground as shown in Figure 12  
(Optional).  
Cut out and remove embossed section on casing  
rear.  
4.  
5.  
4.  
5.  
6.  
7.  
Remove knockout on inner liner.  
Put heater into position.  
6.  
7.  
8.  
9.  
Place inner boot into position, mark and cut boot  
flush with wall. Place damper into cutout end of  
inner boot, mark (4) holes from damper onto inner  
boot, top and bottom, and drill (4) 1/8” hole. Place  
outer boot into position, mark and cut boot flush  
with wall.  
Attach inner boot to liner. Attach damper to inner  
boot (screws provided). Attach outer boot to casing  
back.  
Repeat steps 5 & 6 for outer boot.  
After unit has been set in wall, shove the inner  
boot through the back wall and up against the liner.  
Secure boot with screws provided. Attach damper  
to inner boot with screws provided.  
Repeat Step 9 for outer boot.  
10.  
11.  
12.  
8.  
Place grille in place and secure to wall.  
Final installation will appear as Figure 15.  
9.  
10.  
Place grill in position and secure to wall.  
Final installation will appear as Figure 14.  
(OPTIONAL KITS  
CONTINUED -  
REVERSE SIDE)  
FIGURE 15  
Page 16  
FIGURE 14  
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OPTIONAL KITS - CONTINUED  
SIDE DISCHARGE ON CASING  
SIDE DISCHARGE (With Extension Boot)  
1.  
2.  
3.  
4.  
Use optional kit No. 306SR-A.  
Cut out and remove embossed area on casing side.  
Remove knockout from inner liner.  
Place 1-1/2” boot from kit through opening, matching  
flanges of boot to knockout on inner boot.  
Mark screw holes and remove boot.  
1.  
2.  
3.  
4.  
5.  
6.  
7.  
Use optional kit No. 30SRB-A.  
Cut opening in drywall as shown in Fig. 17.  
Position plasterground as shown in Fig. 17 (optional).  
Cut out and remove embossed section on casing side.  
Remove knockout on inner liner.  
5.  
6.  
7.  
8.  
Put heater into position.  
Drill holes with a 1/8” drill.  
Place inner boot into position, mark and cut boot flush with  
wall. Place outer boot into position, mark and cut boot flush  
with wall.  
Place boot trim into position, slide inner boot through wall  
from adjacent room and attach to inner liner. Slide outer  
boot through wall from adjacent room and attach to casing  
side.  
Attach inner boot with screws provided.  
Place grille into position, drill holes into casing, and  
attach with screws provided.  
8.  
9.  
Place grille into position and secure to wall.  
18”  
Min.  
FIGURE 16  
90 Degree  
Outside Corner  
FIGURE 17  
14PEK-A PLUG EXTENSION KIT INSTRUCTIONS  
FOR NON-RECESSED INSTALLATION ONLY  
3 FT.  
SECTION  
UNITS WITH TERMINAL BOARD  
STEP 1. Turn heater off following Section 3 in “Lighting Instructions” and allow  
to cool.  
STEP 2. Turn off all electricity to heater.  
STEP 3. Remove top louver assembly, fan shroud and fan blade.  
STEP 4. Loosen two screws on romex connector.  
STEP 5. Remove junction box cover plate.  
3 FT.  
SECTION  
STEP 6. Disconnect three power cord terminals and pull power cord out of top  
of heater.  
STEP 7. Insert power cord provided in kit through romex connector and plug  
onto terminal board following wiring diagram found in lighting and  
operating instructions.  
STEP 8. Tighten two screws on romex connector.  
STEP 9. Replace junction box cover plate.  
BOTTOM SECTION  
STEP 10. Replace fan blade, fan shroud and top louver assembly.  
STEP 11. Snap 90 Degree outside corner (Ref. 1) onto 3 ft. section (Ref. 2)  
plastic raceway. Insert power cord and remove blue backing from  
adhesive strip on raceway and apply to side of heater. See Figure 18.  
STEP 12. Insert power cord into second 3 ft. section of raceway (Ref. 3) and  
remove blue backing and apply to side of heater, butting up agianst  
bottom of other section. See Fig. 18.  
STEP 13. Cut 14 inch long bottom section to required length (see chart), insert  
power cord, remove backing and apply to side of heater. See Fig. 18.  
STEP 14. Plug power cord into wall receptacle, see Fig.18.  
STEP 15. Light the heater following lighting instructions.  
FIGURE18  
MODEL  
NUMBER  
CF35  
CF50  
CF55  
Length of bottom section  
(Ref. 4) plastic raceway  
5-5/16 Inches  
8 Inches  
14 Inches  
14 Inches  
CF65  
NOTE: Above lengths terminate  
approximately 2 inches above floor.  
Page 17  
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TROUBLE SHOOTING CHART for qualified serviceman - MAIN BURNER  
SYMPTOM  
POSSIBLE CAUSES  
CORRECTIVE ACTION  
Flame too large  
1. Defective operator section of gas valve.  
2. Burner orifice too large.  
1. Replace complete valve.  
2. Check with local gas company for proper  
orifice size and replace.  
3. If installed above 2,000 ft.  
1. Noisy pilot.  
3. Refer to orifice chart on Page 9.  
1. Reduce pilot gas with adjusting screw on combination  
gas control valve.  
Noisy Flame  
2. Burr in orifice (if it whistles or resonates). 2. Remove burr or replace orifice (do not enlarge orifices).  
3. Excessive gas input.  
1. Clogged main burner ports.  
2. Clogged draft hood.  
3. Linted up mixer opening.  
1. Blocked venting.  
3. See “Flame Too Large” above.  
1. Clean main burner ports. (Do not enlarge ports).  
2. Clean draft hood.  
3. Check for dust or lint at air mixer opening.  
1. Clean flue passageways to remove blockage.  
1. Shut off gas service immediately. Check piping.  
Call gas company. See “For Your Safety”, Page 1.  
2. Clean flue.  
Yellow tip flame (some  
yellow tipping on LP  
gas is permissible  
Floating Flame  
Gas Odor  
1. Gas leak.  
2. Chimney or flue obstruction.  
3. Drafts around appliance.  
1. Pilot flame too small.  
3. Eliminate drafts.  
Delayed Ignition  
1. Check pilot orifice. Increase pilot gas flow if  
necessary by adjusting inlet pressure from gas  
source (meter if natural gas or second stage  
regulator if propane - maximum 7” w.c. for  
Natural and 11” w.c. for propane).  
2. Clean burner ports (do not enlarge ports).  
3. Check gas supply inlet pressure. Check gas outlet  
(manifold) pressure for “minimum step” pressure  
(for “step” pressure chart see “Operation”).  
4. Supply piping inadequately sized or incorrect  
inlet pressure.  
2. Burner ports clogged near pilot.  
3. Low gas pressure.  
4. Pilot decreases in size when main  
burners come on.  
5. Drafts around appliance.  
6. Bad venting.  
5. Eliminate drafts.  
6. See Venting”.  
Failure to Ignite  
1. Main gas off.  
1. Open all manual gas valves.  
2. Defective gas valve.  
1. Improper venting.  
2. Replace gas valve.  
1. See Venting”.  
Condensation of  
Water Vapor  
Burner won’t  
turn off  
1. Defective or sticking automatic valve.  
2. Excessive gas pressure (The supply gas  
pressure must not exceed 1/2 psi or  
14” w.c.  
1. Replace valve.  
2. To correct this situation contact the utility  
supplying the gas.  
Incorrect Gas Input  
Not enough heat  
1. Gas input not checked.  
2. Clogged orifice.  
1. Re-check gas input.  
2. Check orifice for clogging. If clogged, clean out  
the hole carefully with a smooth wood toothpick.  
(Do not in any way enlarge or distort it).  
1. This is especially true when a dwelling or room is  
enlarged. Have the heat loss calculated and compare  
to the appliance output (approx. 70% of input).  
Your gas company or installer can supply you with  
this information. If appliance is undersized, replace  
with correct size unit.  
1. Appliance undersized.  
2. Incorrect supply pressure.  
1. Combination control valve sticks open.  
2. Check supply pressure as outlined above.  
1. Replace combination control valve.  
Too much heat  
TROUBLE SHOOTING CHART - PILOT AND VALVE  
Burner won’t  
turn on  
1. Gas valve not turned on.  
2. No voltage to valve.  
1. Turn gas valve to “on” position”.  
2. Check for 24 Volts to Valve.  
3. Check wall thermostat.  
3. Defective thermostat.  
4. No 115 Volt Line Voltage.  
4. Jump fan switch to check for voltage (fan will  
come on).  
5. Auxiliary limit switch open.  
6. Blocked flue switch open.  
7. Gas valve defective.  
5. Push on red buton to close.  
6. Push red button in to close.  
7. Replace gas valve  
Page 18  
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TROUBLE SHOOTING CHART - PILOT AND VALVE - CONTINUED  
SYMPTOM  
Pilot won’t light,  
POSSIBLE CAUSES  
1. Air in line.  
CORRECTIVE ACTION  
1. Bleed line.  
or stay lit  
(STANDING PILOT)  
2. Defective thermocouple.  
3. Pilot flame too low.  
4. Manual reset switch not engaged.  
2. Replace thermocouple.  
3. Adjust pilot flame.  
4. Push on button.  
Pilot won’t light,  
or stay lit  
(I.I.D. PILOT)  
1. Sparker won’t work.  
2. Sparker won’t light pilot.  
1. Check wire connections.  
2.a. Pilot flame too lean.  
2.b. Turn valve to “on” position.  
2.c. Check for pilot restriction.  
3. Push on button.  
3. Manual reset switch not engaged.  
THE FOLLOWING IS A LIST OF POSSIBLE CAUSES AND CORRECTIVE ACTIONS  
FOR BLOCKED FLUE SWITCH PROBLEMS  
POSSIBLE CAUSES  
1. Blockage in vent pipe  
CORRECTIVE ACTION  
1. A) Check vent pipe for blockage, such as bird nest, wasp nest, twigs, leaves, etc.  
1. B) Check inside the bottom of the vent pipe to make sure the top of the draft  
diverter did not rip the inner liner causing it to block part of the vent opening.  
1. C) Check that no insulation from the header plate got caught on top of the draft  
diverter when the heater was inserted into the wall.  
1. D) Check that the vent cap is properly installed, not shoved too far down on the  
vent pipe.  
2. Burner is overfiring  
2. A) Check the manifold pressure.  
2. B) Check the rate, NOTE: This appliance was orificed for elevations up to 2,000  
feet. When installed at higher elevations refer to orifice chart in “Controls”  
section of instructions for proper orifice size.  
3. Improper vent system.  
A) Vent too short  
3. Correct vent system.  
A) The vent should terminate a minimum of 12 feet above the floor. See Figure 1.  
Also, the top of the vent must be at least 2 foot above any obstacle within a  
10 foot radius, including the roof. See Figure A on Page 4.  
B) Restriction in vent  
system caused by  
offsets  
B) All type “B” vents shall extend in a generally vertical direction with offsets not  
exceeding 45 degrees, except that a vent system having not more than one 60  
degree offset may be allowed.  
Any angle greater than 45 degrees from the vertical is considered horizontal.  
The total horizontal run of a vent plus the horizontal vent connector shall be  
not greater than 75 percent of the vertical height of the vent.  
C) Incorrect vent pipe  
C) Use listed BW type vent pipe. Do not use transite or any other type of ceramic  
pipe for venting. Do not use single wall pipe. When venting into a masonry  
chimney the chimney must be properly lined and sized for this gas furnace.  
The use of type B or a flexible chimney liner is recommended.  
4. Incorrect header plate  
location.  
4. Consult Figure 6 for correct header plate height.  
5. Vent pipe not down on the  
header plate securely  
5. You must use a base plate (obtained from the vent pipe manufacturer) on top of the  
header plate, or wall furnace. This will lock the vent pipe down and prevent the  
draft diverter from shoving it up.  
6. Loose connections on the  
vent safety wiring harness  
6. Check the connections on both the switch and the gas valve. Tighten if necessary.  
DO NOT BYPASS THE BLOCKED FLUE SWITCH: TO DO  
SO COULD EXPOSE THE CONSUMER TO PROPERTY DAMAGE,  
PERSONAL INJURY OR POSSIBLE DEATH.  
Page 19  
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COUNTERFLOW WALL FURNACE / STANDING PILOT  
Prices and specifications subject to  
chil
pr
33  
32b  
M
32c  
39  
3
NA
CF
CF
CF
52  
26  
1a  
34b  
32d  
15  
32  
46  
6
1c  
1d  
1b  
45  
24  
14  
2
25  
34  
7
1
5
4
10  
8
11  
1e  
27  
29  
28  
13  
12  
30  
9
31  
37  
1f  
35  
22/23  
36  
42  
16  
21  
Mr. Contractor, we only sell parts through  
our wholesalers, but the prices listed are for  
your convenience. For prompt parts service,  
contact the wholesaler from which you  
purchased your Cozy heater. NOTE: Parts &  
schematic drawings on current models are  
shown at www.cozyheaters.com.  
REV. 04/97  
18  
17  
Page 20  
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HOW TO PROPERLY ORDER PARTS: In addition to part description and part number, please give model number, serial  
number, and type of gas used. This information can be found on the rating plate that is attached to heater.  
24 VOLT SYSTEM WITH LOW-B.T.U. STANDING PILOT  
NATURAL  
L.P.  
CF353C-R  
CF354C-R  
CF503C-R  
CF504C-R  
CF653C-R  
CF654C-R  
LIST  
MODEL NUMBER  
REF.  
PART  
LIST  
PART  
LIST  
PART  
PART DESCRIPTION  
Casing Side, Right  
Casing Side, Left  
Center Back Assembly  
Top Assembly  
Upper Back Assembly  
Lower Back Assembly  
Bottom  
NUMBER  
NUMBER  
30055  
30060  
30114  
30025  
30070  
30219  
30246  
30120  
31399  
30133  
30180  
30200  
30087  
30089  
30100  
30250  
30252  
30253  
30256  
* 30079  
30033  
72107  
72090  
72091  
78006  
72182  
95271  
72108  
78101  
78010  
78065  
78067  
N/A  
78086  
78355  
78069  
40061  
30047  
*30260  
78050  
78051  
78049  
78052  
72020  
72021  
84003  
78213  
78058  
74518  
78095  
74209  
80005  
78108  
78230  
78300  
78452  
80016  
72022  
30286  
30290  
30299  
30296  
91272  
PRICE  
NUMBER  
30325  
30330  
30364  
30025  
30070  
30219  
30246  
30370  
31399  
30379  
30400  
30200  
30087  
30359  
30100  
30250  
30450  
30253  
30256  
*30079  
30033  
72107  
72090  
72091  
78006  
78160  
78163  
78111  
78101  
78010  
78065  
78067  
78066  
78086  
78355  
78069  
40061  
30047  
*30260  
78050  
78051  
78049  
78052  
72020  
72021  
84003  
78213  
78058  
74518  
78095  
74209  
80005  
78109  
78230  
78300  
78452  
80016  
72022  
30286  
30290  
30299  
30296  
91272  
PRICE  
NUMBER PRICE  
$52.10  
1
$48.40  
$49.00  
30525  
30530  
30544  
30025  
30070  
30219  
30246  
30550  
31399  
30563  
30400  
30200  
30087  
30534  
30100  
30250  
30450  
30253  
30256  
*30079  
30033  
72107  
72090  
72091  
78006  
78169  
95273  
78111  
78101  
78010  
78065  
78067  
78066  
78086  
78355  
78069  
40061  
30047  
*30260  
78050  
78051  
78049  
78052  
72020  
72021  
84003  
78213  
78058  
74518  
78095  
74209  
80005  
78109  
78230  
78300  
78452  
80016  
72022  
30286  
30290  
30299  
30296  
91272  
1a  
1b  
1c  
1d  
1e  
1f  
$48.40  
$37.10  
$13.30  
$22.30  
$30.60  
$9.80  
$73.30  
$38.60  
$210.60  
$31.30  
$21.60  
$17.60  
$24.90  
$31.60  
$3.50  
$49.00  
$34.20  
$13.30  
$22.30  
$30.60  
$9.80  
$74.00  
$38.60  
$216.10  
$42.30  
$21.60  
$17.60  
$26.70  
$31.60  
$3.50  
$52.10  
$36.80  
$13.30  
$22.30  
$30.60  
$9.80  
$80.20  
$38.60  
$216.10  
$42.30  
$21.60  
$17.60  
$28.80  
$31.60  
$3.50  
Liner Assembly  
2
3
4
5
6
7
8
9
Header Assembly Complete  
Heat Exchanger Assembly  
Draft Diverter Assembly  
Fan Shroud Assembly  
Top Louver w/Insulation  
Center Front Panel w/Insulation  
Bottom Louver Assembly w/Insulation  
Upper Front Shield  
Switch Box  
10  
11  
12  
13  
14  
15  
16  
17  
18  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
32b  
32c  
32d  
33  
34  
34b  
35  
36  
36  
37  
38  
39  
41  
42  
43  
44  
45  
46  
52  
$7.10  
$2.80  
$5.10  
$2.10  
$7.20  
$2.80  
$5.10  
$2.10  
$7.20  
$2.80  
$5.10  
$2.10  
Switch Box Cover  
Lower Front Shield  
Motor Mounting Bracket  
Junction Box Cover  
Burner  
Valve, 7200ERSO4 NATURAL GAS  
Valve, 7200ERSO4 L.P. GAS  
Manifold  
Orifice,NATURAL  
Orifice, L.P.  
Fan Motor  
$3.70  
$3.70  
$3.70  
$38.20  
$137.90  
$137.90  
$12.30  
$3.40  
$38.20  
$137.90  
$137.90  
$12.30  
$3.40  
$38.20  
$137.90  
$137.90  
$12.30  
$3.40  
$3.40  
$3.40  
$3.40  
$73.90  
$24.20  
$3.00  
$5.90  
$6.10  
N/A  
$9.30  
$20.00  
$23.50  
$2.00  
$1.90  
$1.20  
$1.20  
$1.20  
$1.20  
$4.40  
$22.70  
$22.70  
$2.30  
$4.70  
$4.70  
$1.30  
$11.40  
$1.20  
$1.20  
$9.30  
$1.50  
$5.00  
$5.40  
$5.70  
$4.70  
$15.90  
$4.70  
$2.40  
$2.80  
N/C  
$85.80  
$24.20  
$3.00  
$5.90  
$6.10  
$8.90  
$9.30  
$20.00  
$23.50  
$2.00  
$1.90  
$1.20  
$1.20  
$1.20  
$1.20  
$4.40  
$22.70  
$22.70  
$2.30  
$4.70  
$4.70  
$1.30  
$11.40  
$1.20  
$1.20  
$9.30  
$1.50  
$5.00  
$5.40  
$5.70  
$4.70  
$15.90  
$4.70  
$2.40  
$2.80  
N/C  
$85.80  
$24.20  
$3.00  
$5.90  
$6.10  
$8.90  
$9.30  
$20.00  
$23.50  
$2.00  
$1.90  
$1.20  
$1.20  
$1.20  
$1.20  
$4.40  
$22.70  
$22.70  
$2.30  
$4.70  
$4.70  
$1.30  
$11.40  
$1.20  
$1.20  
$9.30  
$1.50  
$5.00  
$5.40  
$5.70  
$4.70  
$15.90  
$4.70  
$2.40  
$2.80  
N/C  
Fan Blade  
Rubber Grommet  
Limit Switch 60T11-L180  
Fan Switch 60T12-F120  
Speed Switch 60T13-F160-30  
Auxiliary Limit Switch 60T15-L350  
Thermostat 24 Volt  
Transformer  
Flue Pipe Adapter  
Plug Bracket  
Casing Mounting Brackets  
Flue Pipe Gasket  
Draft Diverter Gasket  
Casing Top Gasket  
Element Support Gasket  
Pilot,NAT. 0.140.512  
Pilot, L.P.. 0.140.502  
Cozy Handle  
Power Cord  
Snap-in Outlet  
Thermostat Wire  
Thermocouple Q309A-2135  
Insulated Staples  
Door Catch  
Blocked Flue Switch  
Blocked Flue Switch Wire  
Terminal Board  
Pilot Tubing w/Fittings  
Piezo Sparker  
Electrode Wire  
Burner Pan Assembly  
Valve Support Bracket Assembly  
Pilot Mounting Bracket  
Burner Mounting Plate  
Lighting Instructions “CF”  
53  
56  
57  
58  
REV. 07/99  
*REQUIRES TWO.  
MARCH 2005  
Page 21  
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COUNTERFLOW WALL FURNACE / I.I.D. PILOT  
33  
Prices and specifications subject to change  
without notice. All prices are F.O.B. factory.  
32b  
32c  
39  
3
MODELS:  
52  
26  
NAT. GAS  
CF357C-R  
CF557C-R  
L.P. GAS  
CF358C-R  
CF558C-R  
1a  
34b  
32d  
15  
32  
51  
6
1c  
1d  
1b  
50  
24  
14  
2
25  
7
34  
1
5
4
10  
27  
12  
8
11  
1e  
28  
13  
30  
9
31  
37  
1f  
35  
22/  
23  
47/  
48  
49  
CONTROL  
ASSEMBLY  
16  
21  
45  
46  
Mr. Contractor, we only sell parts through our wholesalers, but  
the prices listed are for your convenience. For prompt parts  
service, contact the wholesaler from which you purchased your  
Cozy heater. NOTE: Parts & schematic drawings on current  
models are shown at www.cozyheaters.com.  
19 20  
REV. 04/97  
Page 22  
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HOW TO PROPERLY ORDER PARTS: In addition to part description and part number, please give model number, serial  
number, and type of gas used. This information can be found on the rating plate that is attached to heater.  
24 VOLT SYSTEM WITH INTERMITTENT  
NATURAL  
L.P.  
CF357C-R  
CF358C -R  
CF557C-R  
CF558C-R  
MODEL NUMBERS  
REF.  
NUMBER  
PART  
LIST  
PRICE  
$48.40  
PART  
LIST  
PRICE  
$52.10  
$52.10  
$36.80  
$13.30  
$22.30  
$30.60  
$9.80  
$80.20  
$38.60  
$217.20  
$42.30  
$21.60  
$17.60  
$28.80  
$31.60  
$3.50  
PART DESCRIPTION  
Casing Side, Right  
Casing Side, Left  
Center Back Assembly  
Top Assembly  
Upper Back Assembly  
Lower Back Assembly  
Bottom  
NUMBER  
30055  
30060  
30114  
30025  
30070  
30219  
30246  
30120  
31399  
30133  
30180  
30200  
30087  
30089  
30100  
30250  
30252  
30253  
30256  
*30079  
30033  
72107  
72092  
72093  
78006  
72182  
95271  
72108  
78101  
78010  
78065  
78067  
N/A  
78086  
78355  
78069  
40061  
30047  
*30260  
78050  
78051  
78049  
78052  
84003  
78213  
78058  
74518  
78070  
78088  
72098  
72097  
30299  
78073  
78108  
78230  
78300  
78452  
30286  
30290  
30299  
30296  
91261  
NUMBER  
30525  
30530  
30544  
30025  
30070  
30219  
30246  
30550  
31399  
30562  
30400  
30200  
30087  
30534  
30100  
30250  
30450  
30253  
30256  
*30079  
30033  
72107  
72092  
72093  
78006  
78161  
78168  
78111  
78101  
78010  
78065  
78067  
78066  
78086  
78355  
78069  
40061  
30047  
*30260  
78050  
78051  
78049  
78052  
84003  
78213  
78058  
74518  
78070  
78088  
72098  
72097  
30299  
78073  
78109  
78230  
78300  
78452  
30286  
30290  
30299  
30296  
91261  
1
1a  
1b  
1c  
1d  
1e  
1f  
2
3
4
5
$48.40  
$37.10  
$13.30  
$22.30  
$30.60  
$9.80  
$73.30  
$38.60  
$210.60  
$31.30  
$21.60  
$17.60  
$24.90  
$31.60  
$3.50  
Liner Assembly  
Header Assembly Complete  
Heat Exchanger Assembly  
Draft Diverter Assembly  
Fan Shroud Assembly  
Top Louver w/Insulation  
Center Front Panel w/Insulation  
Bottom Louver Assembly w/Insulation  
Upper Front Shield  
Switch Box  
Switch Box Cover  
Lower Front Shield  
Motor Mounting Bracket  
Junction Box Cover  
Burner  
Valve, NATURAL - I.I.D. 7200IPER  
Valve, L.P.. - I.I.D. 7200IPER  
Manifold  
Orifice, Natural  
Orifice, L.P.  
Fan Motor  
Fan Blade  
Rubber Grommet  
Limit Switch  
Fan Switch 60T12-F120  
Speed Switch F160-30  
Auxiliary Limit Switch 60TG15 350 Deg., Lower  
Thermostat  
Transformer  
Flue Pipe Adapter  
Plug Bracket  
Casing Mounting Brackets  
Flue Pipe Gasket  
Draft Diverter Gasket  
Casing Top Gasket  
Element Support Gasket  
Cozy Handle  
Power Cord  
Snap-in Outlet  
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
32b  
32c  
32d  
33  
34  
34b  
35  
37  
38  
39  
41  
45  
46  
47  
48  
49  
50  
51  
52  
53  
56  
57  
58  
$7.10  
$2.80  
$5.10  
$2.10  
$7.20  
$2.80  
$5.10  
$2.10  
$3.70  
$3.70  
$38.20  
$129.00  
$129.00  
$12.30  
$3.40  
$38.20  
$129.00  
$129.00  
$12.30  
$3.40  
$3.40  
$3.40  
$73.90  
$24.20  
$3.00  
$5.90  
$6.10  
N/A  
$9.30  
$20.00  
$23.50  
$2.00  
$1.90  
$1.20  
$1.20  
$1.20  
$1.20  
$4.40  
$2.30  
$4.70  
$85.80  
$24.20  
$3.00  
$5.90  
$6.10  
$8.90  
$9.30  
$20.00  
$23.50  
$2.00  
$1.90  
$1.20  
$1.20  
$1.20  
$1.20  
$4.40  
$2.30  
$4.70  
$4.70  
$1.30  
$4.70  
$1.30  
Thermostat Wire  
Ignition Control Box, NAT., SP715A  
Ignition Control Box, L.P., SP845  
Pilot Assembly, Electronic, NAT., 3S-24  
Pilot Assembly, Electronic, L.P.., 3S-24  
Pilot Bracket, CF-IID  
Sensor, S1  
Blocked Flue Switch  
Blocked Flue Switch Wire  
Terminal Board  
Pilot Tubing w/Fitting  
Burner Pan Assembly  
Valve Support Bracket Assembly  
Pilot Mounting Bracket  
Burner Mounting Plate  
Lighting Instructions “CF”  
$104.50  
$143.30  
$37.30  
$33.70  
$2.40  
$16.40  
$9.30  
$1.50  
$5.00  
$5.40  
$15.90  
$4.70  
$2.40  
$104.50  
$143.30  
$37.30  
$33.70  
$2.40  
$16.40  
$9.30  
$1.50  
$5.00  
$5.40  
$15.90  
$4.70  
$2.40  
$2.80  
N/C  
$2.80  
N/C  
REV. 04/97  
*REQUIRES TWO.  
MARCH 2005  
Page 23  
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VENT  
ENCLOSURE  
KIT NO. 31300-A  
TRIM KIT  
15  
1
3
2
4
14  
KIT NO.  
16VE-A  
or  
KIT NO. 406RR-A  
REAR REGISTER W/  
BOOT - FLUSH  
36VE-A  
5
16  
8
7
12  
5
16  
10  
7
8
9
12  
12  
KIT NO.  
407RR-A  
REAR REGISTER -  
RECESS  
11  
5
13  
6
KIT NO.  
306SR-A  
SIDE  
KIT NO.  
30SRB-A  
SIDE REGISTER  
W/BOOT  
For description of above  
reference numbers,  
see reverse side.  
REGISTER -  
FLUSH  
REV. 08/98  
Page 24  
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PARTS LIST FOR ACCESSORIES FOR COUNTERFLOW WALL FURNACE  
PART DESCRIPTION  
16" Vent Enclosure Side  
16" Vent Enclosure Front  
24" Vent Enclosure Side  
24" Vent Enclosure Front  
36" Vent Enclosure Side  
36" Vent Enclosure Front  
Side / Rear Register  
Side Register  
Large Outer Boot  
Large Inner Boot  
Small Outer Boot  
Small Inner Boot  
REF. NO. PART NO.  
LIST PRICE  
1
2
31360  
31355  
31367  
31366  
31385  
31380  
31630  
31525  
31580  
31560  
31720  
31710  
31615  
31595  
31510  
31310  
31320  
31675  
$8.20  
$10.30  
$12.60  
$15.40  
$15.20  
$18.90  
$18.00  
$18.00  
$23.40  
$21.30  
$9.70  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
$9.10  
Boot Trim  
Plaster Ground  
Side Boot  
Cabinet Side Trim Angle  
Cabinet Top Trim  
$15.80  
$11.60  
$9.20  
$5.30  
$4.60  
Damper Assembly  
$20.60  
REPLACEMENT WIRING - STANDING PILOT COUNTERFLOW  
MODELS CF353C-R & CF354C-R  
Black 17-1/2" Fork Term./with Stripped end Transformer (24 V. Side) to The  
Black 27" Flag Terminal/Flag Terminal Auxiliary Limit Switch to Valve  
Wiring Harness  
78200  
78205  
78250  
$1.50  
$2.00  
$23.50  
MODELS CF503C-R & CF504C-R  
Black 17-1/2" Fork Term./with stripped end  
Black 32" Flag Terminal/Flag Terminal Auxiliary Limit Switch - Valve  
Transformer (24 V.) to Therm  
78200  
78216  
78208  
78251  
$1.50  
$1.90  
$1.60  
Black 6" Flag Terminal/Flag Termial  
Wiring Harness  
Selector Switch - Fan Switch  
$23.50  
MODELS CF653C-R & CF654C-R  
Black 17-1/2" Fork Term./with stripped end Transformer (24 V.) to Therm  
Black 32" Flag Terminal/Flag Terminal Auxiliary Limit Switch - Valve  
78200  
78216  
78208  
78252  
$1.50  
$1.90  
$1.60  
Black 6" Flag Terminal/Flag Terminal  
Wiring Harness  
Selector Switch to Fan Switch  
$23.50  
REPLACEMENT WIRING - I.I.D. (INTERMITTENT IGNITION) COUNTERFLOW  
MODELS CF357C-R & CF358C-R  
Black 17-1/2" Fork Term./with stripped end  
Black 30" Flag Terminal/Straight Terminal  
Wiring Harness  
Transformer (24V. Side) to Th  
Auxiliary limit to ignition control  
78200  
78214  
78259  
$1.50  
$1.90  
$23.50  
MODELS CF557C-R & CF558C-R  
Black 17-1/2" Fork Term./with stripped end  
Black 38" Flag Terminal/Straight Terminal  
Transformer (24V.) to Thermo  
Auxiliary limit to ignition control  
78200  
78258  
78208  
78257  
$1.50  
$2.30  
$1.60  
Black 6" Flag Terminal/Flag Terminal  
Wiring Harness  
Selector Swith - Fan Switch  
$26.90  
Mr. Contractor, we only sell parts through our wholesalers, but the prices listed are for your convenience. For prompt parts service,  
contact the wholesaler from which you purchased your Cozy heater. NOTE: Parts & schematic drawings on current models are shown  
MARCH 2005  
REV. 04/97  
Page 25  
Download from Www.Somanuals.com. All Manuals Search And Download.  
IMPORTANT SAFETY BULLETIN ON YOUR GAS CONTROL AND PILOT LIGHT  
SYSTEM FOR HEATING EQUIPMENT  
WHAT YOU DON’T KNOW CAN HURT YOU.  
Your pilot light system has been designed for safe and reliable operation. Although safety mechanisms are built-in,  
the potential for hazard exists. This information is intended to help you avoid these hazards.  
YOUR GAS CONTROL AND PILOT LIGHT  
SYSTEM  
WHAT TO DO IF YOU SMELL GAS . . .  
Do not try to light any appliance.  
Do not touch any electrical switch; do not use any  
phone in your building.  
Your gas control and pilot light system has a safety  
device whose purpose is to shut-off the gas supply  
to the appliance if the pilot light goes out. If you  
have trouble lighting the pilot or keeping it lit, it  
may mean that this safety device is warning you that  
there is a problem with your system. Inspection and  
repairs or replacement must be made by a trained  
gas service technician.  
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.  
Installation and service must be performed by a qualified  
installer, service agency or the gas supplier.  
Do not store or use gasoline or other flammable vapors  
and liquids in the vicinity of this or any other appliance.  
CRITICAL SAFETY POINTS TO REMEMBER . . .  
TAMPERING IS DANGEROUS  
The pilot safety system may also not work if you do  
not follow the lighting instructions carefully or if you  
tamper with the gas control that you use to light the  
pilot. Tampering with the gas control, particularly  
with tools, can damage the safety mechanism in the  
control and can allow gas to leak. This can result in  
a fire or explosion causing property damage, personal  
injury or death.  
Your gas has been odorized so that you can smell it.  
Always smell around for gas before lighting your  
appliance.  
Sniff for L.P.-gas at floor level. LP-gas is heavier  
than air and may temporarily exist at floor level.  
IF YOU SMELL GAS, DON’T LIGHT IT  
If you smell gas, do not attempt to light the pilot. Do  
not cause a spark by turning on or off electrical  
switches or appliances or by using the phone. Turn  
off the gas to the appliances and call your gas supplier  
from another location.  
If your gas control has gotten wet as the result of  
flooding or other wetting, it must be replaced  
immediately by a trained gas service technician.  
Water can lead to damage of the internal safety  
mechanism in the gas control and can create a  
hazardous condition.  
IF YOU CAN’T LIGHT IT,  
DON’T FIGHT IT!  
THIS IS NOT AN ADVERTISEMENT  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Download from Www.Somanuals.com. All Manuals Search And Download.  

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