FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL
INJURY AND/OR PROPERTY DAMAGE.
DESCRIPTION
The 36C cycle pilot gas valves with redundant pilot solenoid main gas regulator, integral gas pressure switch and
electrical connection on the gas valve for mercury flame
sensor connection.
36C
Cycle Pilot Gas Valve
INSTALLATION INSTRUCTIONS
SPECIFICATIONS
Electrical Rating: 0.6 amps
End to End Dimensions: 3
15
/16”
Maximum Pressure Rating:
Agency: A.G.A. and C.G.A. design certified
Ambient Operating Range: –40 to +175°F (–40 to 79°C)
Outlet Pressure
1" Pressure Drop Capacity Rated Range of Regulation
BTU/HR BTU/HR
AGA STD. NAT GAS LP GAS AGA STD. NAT GAS LP GAS
Pipe Size 1000 BTU/CU. FT. 2500 BTU/CU. FT. 1000 BTU/CU. FT. 2500 BTU/CU. FT.
1/2 X 3/8 100,000 162,000 15,000-100,000 15,000-162,000
1/2 X 1/2 230,000 372,600 30,000-290,000 30,000-469,000
1/2 X 3/4 230,000 372,600 30,000-290,000 30,000-469,000
3/4 X 3/4 280,000 453,600 50,000-400,000 50,000-648,000
Model Coil Gas Pipe Opening Regulator Adjustment Convertible Kit Line Flow Bushing Pressure Side See
Number Voltage Type Size Characteristic Setting Range Nat./LP Included Interrupter Direction Kit Tap Taps Figure ➀
36C84-912 24 VAC Natural3/4 x 3/4Fast Open 3.5” 2.5”–5.0” Yes Yes No Str. Thru Yes Yes No 5
36C84-913 24 VAC Natural
36C84-916 24 VAC Natural3/4 x 3/4Fast Open 3.5” 2.5”–5.0” No No No Str. Thru Yes No No 8
36C84-921 24 VAC Natural
36C84-923 24 VAC Natural
36C84-926 24 VAC Natural3/4 x 3/4Fast Open 3.5” 2.5”–5.0” No No No Str. Thru Yes No No 4
36C84-936 24 VAC LP
36C87-944 24 VAC Natural
36C94-906 24 VAC Natural3/4 x 3/4Slow Open 3.5” 2.5”–5.0” No No No Str. Thru Yes No No 5
36C94-907 24 VAC Natural
➀ Wiring diagrams – see pages 3-6
3
/4 x 3/4Fast Open 3.5” 2.5”–5.0” Yes Yes No Str. Thru Yes Yes No 7
3
/4 x 3/4Fast Open 3.5” 2.5”–5.0” Yes Yes No Str. Thru Yes Yes No 5
3
/4 x 3/4Fast Open 3.5” 2.5”–5.0” No No No Str. Thru No Yes No 9
3
/4 x 3/4Fast Open 11.0” 7.5”–12.0” No No No Str . Thru Yes No No 4
3
/4 x 3/4Step Open 1.0 1.0”/3.5” 2.5”–5.0” No No No Str . Thru Yes No No 6
3
/4 x 3/4Slow Open 3.5” 2.5”–5.0” Yes Ye s No Str. Thru Ye s No No 4
Regulator Conversion Reducer Inlet Wiring
LP Internal
1
/2 PSI (14.0” W.C.)
www.white-rodgers.com
PART NO. 37-6517A
0618
PRECAUTIONS
DO NOT BEGIN INSTALLATION UNTIL YOU READ THE FOLLOWING PRECAUTIONS.
!
WARNING
If you do not follow these instructions exactly, a fire or explosion
may result causing property damage, personal injury or loss of life.
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.
CAUTION
!
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.).
INSTALLATION
NOTE
All piping must comply with local codes, ordinances,
and/or national fuel gas codes.
1. Turn off electrical power to the system at the fuse box
or circuit breaker. Also turn off the main gas supply.
2. If replacing an existing valve, disconnect all plumbing
and electrical connections from the old control.
3. The control may be installed in any position except
upside down (see figure 1). The arrow on the bottom
plate indicates the direction of gas flow through the valve.
4. 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.
5. Apply pipe joint compound (pipe dope) or teflon tape that
is approved for all gases, only to the male threads of
the pipe joints. DO NOT apply compound or teflon tape
to the first two threads (see figure 2 for typical piping
connections).
6. If you are using a vise or open-end wrench to hold the
valve while installing piping, do not tighten excessively,
as this may damage the valve.
7. See wiring pages 3-6 when making electrical connections. After all gas and electrical connections are
completed, turn gas on and check for gas leaks with
leak detection solution or soap suds. Bubbles forming
indicate a leak. SHUT OFF GAS AND FIX ALL
LEAKS IMMEDIATELY.
2
Upright, 90° from upright or vertical
UPRIGHT
LEFT OR RIGHT
NOTE: Control shown may not be identical
to replacement control.
Figure 1. Mounting positions
Drop
Horizontal
NOTE:
Always Include
A Drip Leg In Piping
Drop
Horizontal
3 in.
minimum
Riser
Gas Valve
Piped Gas
Supply
3 in.
minimum
Tub in g Gas
Supply
Piped Gas
Supply
Figure 2. Typical gas valve piping
INLET BOSS
UP OR DOWN
Gas Valve
Riser
minimum
Gas Valve
3 in.
INSTALLATION
PILOT GAS CONNECTION
Install fitting into pilot gas outlet (see figure 3), 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 1½
turns.
SYSTEM WIRING
REFER TO AND FOLLOW THE APPLIANCE MANUFACTURER'S WIRING DIAGRAM. USE THE TABLE ON PAGE 1
TO IDENTIFY THE PROPER TERMINAL IDENTIFICATION
FIGURE FOR THE GAS VALVE.
Wiring for 36C84-926, -936 & 36C94-907 Gas Valves
Figure 4
Pilot gas
outlet
PILOT
PRESS
TAP
Gas outlet
Figure 3
NOTE
All wiring should be installed in accordance with local and
national electrical codes and ordinances.
Always check that the electrical power supply used agrees
with the voltage and frequency shown on the gas control.
GREEN
4
WHITE
2
TAN
PRESSURE
SWITCH
TAN
REDUNDANT
COIL
TAN
RED
C
36C84 GAS VALVE
MAIN VALVE RELAY
PILOT/REDUNDANT
SOLENOID VALVE
5059
Pilot
Relight
Control
2
T1 T2
LIMIT
6
THERMOSTAT
Cycle Pilot System
- For Natural Gas -
PRESSURE
SWITCH
N.O.
24 VAC
LINE
S
3098 MERCURY
FLAME SENSOR
HOT
2
3
COLD
453
WIRING
HARNESS
Wiring Harness Available
For Natural Gas
Type Number Length
F115-0060 12 in.
F115-0061 18 in.
F115-0062 24 in.
F115-0063 30 in.
F115-0064 36 in.
Wiring Harness consists of two wires,
one tan the other black. Both leads
are terminated with 1/4 inch female
piggyback terminals
RELAY COIL
PRESSURE
SWITCH
N.O.
C
A
G
LIMIT
S
YELLOW
RESISTOR
24 VAC
45326
ORANGE
LINE
3098 MERCURY
FLAME SENSOR
HOT
2
3
COLD
13425
5022
SAFETY
TIMER
4
C
36C84 GAS VALVE
MAIN VALVE RELAY
4
WIRING
HARNESS
Wiring Harness Available
For All Gases
Type Number Length
F115-0055 12 in.
F115-0056 18 in.
F115-0057 24 in.
F115-0058 30 in.
F115-0059 36 in.
Wiring Harness consists of five wire
cable in black sheathing. One end
terminated in five-terminal connector
for mating to 5022 or 50A22. Other
end terminated with six terminal
connector to mate with gas manifold.
PILOT/REDUNDANT
SOLENOID VALVE
BLUE
WARP
SWITCH
DIODE
WARP SWITCH
HEATER
Relight
Control
THERMOSTAT
RED
5059
Pilot
TAN
SCR
T1 T2
Cycle Pilot System
- For All Gases -
3
INSTALLATION (cont'd)
Wiring for 36C84-912, -921 & 36C94-906 Gas Valves
Figure 5
Cycle pilot plug-in
PILOT
ADJ.
SLCOM.
C
LINE
5059 PILOT RELIGHT CONTROL
TO ELECTRODE
LIMIT THERMOSTAT
24 VAC
L
SILVER
6
BRASS
5
NOTE: On systems where one side of the low voltage
transformer is grounded, silver terminal (6) of the 5059
must be connected to ground side.
36C84 GAS VALVE
MAIN VALVE RELAY COIL
PILOT SOLENOID
COIL
PRESSURE
SWITCH
TAN
N.O.
REDUNDANT
MAIN
RELAY
COIL
TA N
COIL
WHITE
2
3
4
BLACK
3098 MERCURY
FLAME SENSOR
COMMON
3
42
PRESSURE
SWITCH
S
L
TAN
COMMON
HOT
COLD
TAN
Wiring for 36C87-944 Gas Valve
24 VACLINE
Through
Mounting Hole
5059 PILOT RELIGHT CONTROL
To Electrode
T2
T1
Figure 6
36C87 GAS VALVE
Main Valve Relay Coil
C
THERMOSTATLIMIT
L
Pilot Solenoid
Coil
Pressure
Switch
(N.O.)
3098 MERCURY
FLAME SENSOR
Hot
2
Cold
3
Common
4
Plug-In
4
INSTALLATION (cont'd)
Wiring for 36C84-913 Gas Valve
Figure 7
SURE-START TERMINALS
CS
PILOT/REDUNDANT
1
BLUE
36C84 GAS VALVE
MAIN VALVE RELAY
SOLENOID VALVE
PRESSURE
SWITCH
N.O.
3
RED
DIODE
3098 MERCURY
FLAME SENSOR
HOT
2
3
COLD
WIRING
HARNESS
4
TA N2YELLOW5ORANGE
4
5-WIRE
PLUG
PILOT
ADJ.
SLCOM.
Wiring for 36C84-916 Gas Valve
Figure 8
DIODE
SAFETY TIMER
WARP SWITCH
CONTACTS (N.C.)
WARP SWITCH
HEATER
50A22 RELIGHT/SAFETY TIMER
SCR
A
SPARK
CIRCUIT
C
G
FUSE RESISTOR
24 VAC
LINE
RESISTOR
FUSE OR
RESISTOR
56
THERMOSTAT
LINE
LIMIT THERMOSTAT
24 VAC
5059 PILOT RELIGHT CONTROL
TO ELECTRODE
36C84 GAS VALVE
MAIN VALVE RELAY COIL
C
PILOT SOLENOID
COIL
L
SILVER
6
BRASS
5
*PRESSURE
SWITCH
*INTERNAL PRESSURE SWITCH
N.O.
REQUIRES 5" W.C. MINIMUM
2
3
4
3094 MERCURY
FLAME SENSOR
HOT
COLD
COMMON
EQSO
RESISTOR
5
INSTALLATION (cont'd)
Wiring for 36C84-923 Gas Valve
LINE
24 VAC
5059 PILOT RELIGHT CONTROL
TO ELECTRODE
LIMIT THERMOSTAT
SILVER
6
BRASS
5
NOTE: On systems where one side of the low voltage
Figure 9
SLCOM.
36C84 GAS VALVE
MAIN VALVE RELAY COIL
C
PILOT SOLENOID
COIL
L
transformer is grounded, silver terminal (6) of the 5059
must be connected to ground side.
PRESSURE
SWITCH
N.O.
PILOT
ADJ.
2
3
4
3098 MERCURY
FLAME SENSOR
HOT
COLD
COMMON
6
INSTALLATION (cont'd)
Conversion Outlet Pressure
from Pilot Gas Regulator
Model Natural/LP Adjustment Adjustment
36C84-912 See Conversion See Fig. 10 See Fig. 10
from Natural Gas
to L.P.
36C84-913 See Conversion See Fig. 10 See Fig. 10
from Natural Gas
to L.P.
36C84-916 Not Convertable See Fig. 10 See Fig. 10
36C84-921 See Conversion See Fig. 10 See Fig. 10
from Natural Gas
to L.P.
36C84-923 Not Convertable See Fig. 10 See Fig. 10
36C84-926 Not Convertable See Fig. 10 See Fig. 10
36C84-936 Not Convertable See Fig. 10 See Fig. 10
36C87-944 Not Convertable See Fig. 10 See Fig. 10
36C94-906 See Conversion See Fig. 10 See Fig. 10
from Natural Gas
to L.P.
36C94-907 See Conversion See Fig. 10 See Fig. 10
from Natural Gas
to L.P.
CONVERSION FROM
NATURAL GAS TO L.P.
1. Remove regulator cover screw.
2. Turn regulator adjustment screw counterclockwise and
remove from valve.
3. Remove regulator spring from valve.
4. Insert proper spring Nat./L.P. into the valve.
5. Replace the regulator adjustment screw and adjust to
appliance manufacturers specifications.
6. Replace regulator cover screw.
Regulator Adjusting
Cover Screw
OUTLET PRESSURE ADJUSTMENTS
This control is shipped from the factory with the regulator set
to the outlet pressure shown in the table on page 1. Consult
the appliance rating plate to be sure that the setting matches
the appliance manufacturer's specifications. 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.
1. Attach a manometer to the outlet pressure tap of the
valve.
2. Energize system to ignite main burner.
3. Remove "Reg. Adj." cover screw.
4. To DECREASE outlet pressure, turn the adjusting
screw (beneath the cover screw) counterclockwise.
To INCREASE outlet pressure, turn the adjusting
screw clockwise.
5. Replace the cover screw. Cycle the valve two or three
times to verify regulator setting.
PILOT GAS ADJUSTMENT
This control was factory preset and will not normally require
additional adjustment of pilot flame.
If the pilot flame is low and does not engulf the bulb of the
sensor, the system will not energize the main valve.
If pilot gas pressure is too high, gas will sputter past the
ignition electrode, and may not ignite. High pilot gas pressure
may also cause the flame to lift off the burner, causing the
flame sensor bulb to sense "low" heat.
To adjust the pilot flame, remove the cover screw and gasket
(see figure 10). To REDUCE pilot flame, turn the pilot adjust
screw (beneath the cover screw) clockwise. To INCREASE
pilot flame, turn the pilot adjust screw counterclockwise.
Replace gasket and tighten cover screw.
Figure 10
Pilot Adjust
Cover Screw
7
PARTS & ACCESSORIES
Item Model
Number Number Description
F92-0656 L.P. to natural gas conversion kit
for 36C, 36D, 36E and 36F gas
valves with regulation range of 2.5
to 5” W.C.
F92-0659 Natural to regulated L.P. gas
conversion kit for 36C, 36D, 36E
and 36F gas valves with regulation
range of 7.5 to 12.0” W.C.
F92-0737 Natural to unregulated L.P. gas
conversion kit for 36C gas valves .
F92-0866 Con v ersion kit for 36C gas valv es
with regulation range of 4.2 to
11.0” W.C.
Item Model
Number Number Description
F6-1794 Bracket for Bryant pilots when
retrofitting with Cycle-Pilot
F67-0918 Resistor assembly f or use with 36C
Cycle-Pilot gas valves with pressure
switch (NATURAL GAS
APPLICATIONS ONLY) 3098
plug-in type mercury elements and
used with a 5059 pilot relite control.
F69-0727
1
/4” brass compression fitting for
pilot line connections.
F69-1988 Brass compression fitting adapter for
1
/8”pilot line connections.
7
/16”-24 thread.
F92-0514 Reducer bushings f or 36C and 36E
gas valves. Contains one
N.P.T. and one
3
8
/
x 1
”
®
.
3
4
/
/2” N.P.T.
x 1
2
”
/
”
F92-0773 Adapter brack et for remote rod
adjustment of A-cock on older 36C
type gas valves. Not for new style
knob pictured in this catalog.
F115-0059 36” replacement harness assembly
for connection of 50A22-201 to
36C84-926 in the 21D18-5 Cycle-
®
Pilot
retrofit kit or to 36C84-936 in
the 21D18-15.
F115-0064 36” replacement harness assembly
for connection of 5059-23 to
36C84-926 in the 21D18-3 Cycle-
®
Pilot
retrofit kit.
F115-0087 36” replacement harness assembly
for connection of 5059-23 to
36E86-302 in the 21D18-14 Cycle-
®
Pilot
retrofit kit.
F115-0100 Harness assembly for HSI systems
with 36E gas valves; connects the
767A ignitor with the 50E47 or the
50F47 ignition module.
White-Rodgers is a division
of Emerson Electric Co.
The Emerson logo is a
trademark and service mark
of Emerson Electric Co.
St. Louis, Missouri
www.white-rodgers.comwww.white-rodgers.com
www.white-rodgers.com
www.white-rodgers.comwww.white-rodgers.com
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