36C94-303
Delay-Opening Combination Gas Valve
INSTALLATION INSTRUCTIONS
FAILURETO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL
INJURY AND/OR PROPERTY DAMAGE.
DESCRIPTION
36C94-303 is a direct replacement for 36C94-302, 36E93-301, valve that controls gas flow to the pilot and main burners, a main
36E93-302, 36E93-303 and 36E93-304. The 36C94-303 com- valvethatcontrolsgasflowtothemainburner,apressureregula-
bination gas valve is designed for intermittent ignition system tor to maintain a constant outlet pressure, integral gas pressure
applications. The valve is equipped with a redundant solenoid switch and a two position on/off switch for electrical shutoff.
SPECIFICATIONS
Parts and Accessories:
Type of Gas: Natural gas
LP gas (use conversion kit)
F92-0656 - LP to Natural Gas Conversion Kit for use on
Single Stage 36C, D, E, F, G, H, J valves. Regulation range
2.5" to 5.0" W.C.
Pressure Regulator Adjustment Range:
Nat. Gas – 2.5 to 5.0" W.C.
L.P. Gas – 7.0 to 12" W.C.
F92-0659 - Natural to Regulated LP Gas conversion Kit for
use on Single Stage 36C, D, E, F, G, H, J valves. Regulation
range 7.0" to 12.0" W.C.
Pipe Size:
Inlet – 1/2" NPT
Outlet – 3/4" NPT
Capacity @ 1" pressure drop across valve:
230,000 BTU/HR of 0.64 SP GR.
1,000 BTU/CU. FT gas
Ambient Temperature: –40 to +175°F (–40 to 79°C)
Pressure Rating: 14" W.C. (1/2 PSI) max.
Electrical Rating: 24 VAC, 60 Hz, 0.6 A
PRECAUTIONS
DO NOT BEGIN INSTALLATION UNTILYOU READ THE FOLLOWING PRECAUTIONS.
If you do not follow these instructions exactly, a fire or explosion may
result causing property damage, personal injury or loss of life.
!
WARNING
1. Failure to turn off electric or main gas supply to heating system could cause personal injury and/or property
damage by shock, gas suffocation, fire, and/or explosion.
2. Do not use this control on circuits exceeding specified voltage. Higher voltage will damage the control and
may cause shock or fire hazard.
3. NEVER USE FLAME OR ANY KIND OF SPARK TO CHECK FOR GAS LEAKS–COULD CAUSE FIRE AND/OR
EXPLOSION.
4. Do not use a control set for natural gas with LP gas, or a control set for LP gas with natural gas. Personal
injury and/or property damage, gas suffocation, fire, and/or explosion may result.
PART NO. 37-7086B
Replaces 37-7086A
1024
INSTALLATION
SYSTEM WIRING
REFERTO AND FOLLOWTHE APPLIANCE MANUFACTUR-
ER'S WIRING DIAGRAM. REFER TO FIG. 3 FOR TERMINAL
IDENTIFICATION.
Pilot Gas Connection
Install fitting into pilot gas outlet (see Fig. 7), turning until finger-
tight.Insert clean, deburred tubing all the way through the fitting.
While holding the tubing securely, slowly tighten fitting until you
feel a slight "give." Tighten the fitting an additional 1-1/2 turns.
NOTE
ConversionfromNaturaltoL.P.Gas.Refertoconver-
sion kit installation instructions.
All wiring should be installed in accordance with local and na-
tional electrical codes and ordinances.
Outlet Pressure Adjustment
This control is shipped from the factory with the regulator set to
3.5" W.C. (Natural gas full flow). If required, the regulator can
be adjusted for outlet pressures normally ranging from 2.5 to
5" W.C. (natural gas) or 7.5 to 12" W.C. (L.P. gas). Do not force
the adjusting screw beyond the limits that it can easily be
adjusted.
Always check that the electrical power supply used agrees with
the voltage and frequency shown on the gas control.
ON/OFF
SWITCH
36C
C
2
MAIN
Inlet/Outlet pressure test ports are 1/8" NPT (see Fig. 7). For
testing pressure, the outlet pressure tap plug will need to be
removed and a separate hose fitting installed.After testing pres-
sure with a manometer remove hose fitting and re-install plug.
Tighten to 60 in-lb max.
1
PILOT
(REDUNDANT)
FLAME
SWITCH
4
3
PRESSURE
SWITCH
1. Attach the manometer to the outlet pressure tap of the
valve.
ELECTRICAL SCHEMATIC
36C94-303
VALVE WIRING
2. Energize system to ignite main burner.
3. Remove barbed hose fitting.
Figure 3. Valve Wiring
4. To DECREASE outlet pressure, turn the adjusting screw
5
1
4
(beneath the barbed hose fitting) counterclockwise.
1
2
To INCREASE outlet pressure, turn the adjusting screw
clockwise.
3
4
2
3
5. Replace the barbed hose fitting. Cycle the valve two or
three times to verify regulator setting.
PILOT ADJ.
36C94
Terminal Panel
36E93
Terminal Panel
Pilot Gas Adjustment
This control was factory preset and will not normally require
additional adjustment of pilot flame.
36E93-301
36E93-302
36E93-303
Description Term and Size
36C94-303
36E93-304
Old Terminals
36C94-302
New Terminals
If the pilot flame requires adjustment, remove the pilot adjusting
cover screw and gasket (see Fig. 5). To REDUCE pilot flame,
turn the pilot adjust screw (beneath the cover screw) clockwise.
To INCREASE pilot flame, turn the pilot adjust screw counter-
clockwise. Replace gasket and tighten cover screw.
Pilot
5
1
4
(Redundant) 1/4" Male Spade
Coil
Main Coil
3
1
4
1/4" Male Spade
1/4" Male Spade
with 1/4" x 3/16"
adapter installed
Pressure
Switch
2
3
Common
1/4" Male Spade
2
Figure 4.Terminal Connection Old/New
4.00 R
SWING RADIUS
BARBED HOSE FITTING
MUST BE REINSTALLED
IF REGULATOR
IS READJUSTED
PRESSURE ADJUSTING
SCREW IS BENEATH
3.89
INLET
1/8"-27 N.P.T.
PRESSURE TAP
THE BARBED
HOSE FITTING
REF.
5.09
OUTLET
PRESSURE TAP
1/8”-27 N.P.T.
INLET 1/2"-14 N.P.T.
THDS. WITH SCREEN
1.08
.89
PILOT GAS OUTLET
CONNECTION
FOR 1/4” O.D. TUBE
1.25
1/4” X 3/16”
TERMINAL
ADAPTER
.58
PILOT ADJUSTING
COVER SCREW
.88
.88
OUTLET 3/4”-14 N.P.T.
THDS. WITH SCREEN
4.00
4.53
1.44
2.87
Figure 5. Gas Valve,Top
Figure 6. Gas Valve, Side
Figure 7. Gas Valve, Outlet Side
3
LIGHTING INSTRUCTIONS
FORYOUR SAFETY READ BEFORE OPERATING
If you do not follow these instructions exactly, a fire or explosion
may result causing property damage, personal injury or loss of life.
!
WARNING
A. This appliance is equipped with an intermittent
ignition device which automatically lights the
appliance. Do not try to light the pilot by hand.
•
•
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.
B. BEFORE OPERATING 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.
•
If you cannot reach your gas supplier, call
the fire department.
C. 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.
FORYOUR SAFETY
“WHAT TO DO IFYOU SMELL GAS”
•
Do not try to light any appliance.
OPERATING INSTRUCTIONS
1. STOP! Read the safety information above on this
information above. If you don’t smell gas, go to
the next step.
page.
2. Set the thermostat to lowest setting.
8. Push On/Off switch to “ON.”
3. Turn off all electric power to the appliance.
9. Replace control access panel.
4. This appliance is equipped with an ignition device
which automatically lights the burner. Do not try
to light the burner by hand.
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.
5. Remove control access panel.
6. Push On/Off switch to "OFF."
7. Wait five (5) minutes to clear out any gas. If you
then smell gas, STOP! Follow “B” in the safety
TO TURN OFF GAS TO APPLIANCE
1. Set the thermostat to lowest setting.
3. Remove control access panel.
4. Push On/Off switch to “OFF.”
5. Replace control access panel.
2. Turn off all electric power to the appliance if service
is to be performed.
White-Rodgers is a division
of Emerson Electric Co.
The Emerson logo is a
trademark and service mark
of Emerson Electric Co.
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