White Rodgers 36C94-303 User Manual
36C94-303
WARNING
!
If you do not follow these instructions exactly, a fire or explosion
may
result causing property damage, personal injury or loss of life.
Delay-Opening Combination Gas Valve
INSTALLATION INSTRUCTIONS
FAILURE TO 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,
36E93-302, 36E93-303 and 36E93-304. The 36C94-303 combination gas valve is designed for intermittent ignition system
applications. The valve is equipped with a redundant solenoid
Type of Gas: Natural gas
LP gas (use conversion kit)
Pressure Regulator Adjustment Range:
Nat. Gas – 2.5 to 5.0" W.C.
L.P. Gas – 7.0 to 12" 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
valve that controls gas flow to the pilot and main burners, a main
valve that controls gas flow to the main burner, a pressure regulator to maintain a constant outlet pressure, integral gas pressure
switch and a two position on/off switch for electrical shutoff.
SPECIFICATIONS
Parts and Accessories:
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.
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.
PRECAUTIONS
DO NOT BEGIN INSTALLATION UNTIL YOU READ THE FOLLOWING PRECAUTIONS.
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.
www.white-rodgers.com
www.emersonclimate.com
PART NO. 37-7086B
Replaces 37-7086A
1024
PRECAUTIONS
CAUTION
!
WARNING
!
Horizontal
Drop
Piped Gas
Supply
Gas Valve
3 in.
minimum
Gas Valve
Riser
Piped Gas
Supply
3 in.
minimum
Drop
Horizontal
Riser
Gas Valve
Tubing Gas
Supply
3 in.
minimum
NOTE:
Always Include
A Drip Leg In Piping
INLET BOSS
UP OR DOWN
UPRIGHT
LEFT OR RIGHT
Upright, 90° from upright or vertical
NOTE: Control shown may not be identical
to replacement control.
1. Do not short out terminals on gas valve or primary control to test. Short or incorrect wiring can cause
equipment damage, property damage and/or personal injury.
2. This control is not intended for use in locations where it may come in direct contact with water. Suitable
protection must be provided to shield the control from exposure to water (dripping, spraying, rain, etc.).
Before beginning any modification, be sure ALL electrical disconnects are in the OFF position. TAG THE DISCONNECT SWITCHES WITH A SUITABLE WARNING LABEL. Electrical shock can cause personal injury or death.
INSTALLATION
1. Shut off power to the unit and install Lock-Out tag on all
disconnects and breakers.
2. Turn off main gas supply line valve.
3. Mark all wires going to the old valve with the terminal
description that they are attached to.
4. If replacing an existing valve, disconnect all plumbing and
electrical connections from the old control.
5. The control may be installed in any orientation except
upside down (see figure 1). The arrow on the valve indicates the direction of gas flow through the control.
6. You should use new pipe that is properly chamfered,
reamed, and free of burrs and chips. If you are using old
pipe, be sure it is clean and free of rust, scale, burrs,
chips, and old pipe joint compound.
7. Apply pipe joint compound (pipe dope) that is approved
for all gases, only to the male threads of the pipe
joints. DO NOT apply compound to the first two threads
(see figure 2 for typical piping connections).
8. Install gas valve by holding inlet boss with adjustable
wrench. Do not tighten excessively, as this may damage
the valve (Torque: 375 in-lb maximum). Do not crossthread during installation as this may damage the valve.
9. If the original gas valve has a barbed hose fitting, install
pressure tube on barbed hose fitting of the replacement
valve. Ensure that the pressure tube will not kink.
10. Do not remove barbed hose fitting from replacement valve
even if the original valve does not have it.
11. Some applications will require modification of the pilot
tube.
12. See SYSTEM WIRING when making electrical connections.
Connect wires per Fig. 3 Diagram and Fig. 4 Chart.
13. After installation is complete, check the operation of the
unit and, with main burners firing, check all joints for leaks
using a soap and water solution. Retighten all joints where
bubbles appear. DO NOT USE OPEN FLAME TO CHECK
FOR LEAKS
2
Figure 1. Mounting positions
Figure 2. Typical Gas Valve Piping
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