36C53
Combination Gas Valves
(24 Volt Model)
WHITE-RODGERS
INSTALLATION INSTRUCTIONS
Operator: Save these instructions for future use!
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURY
AND/OR PROPERTY DAMAGE.
DESCRIPTION
The multi-function gas controls combine into a single
ON
O F F
P I L O T
package the functions of 3-position gas cock, main gas
valve, pressure regulator and 100% shut-off automatic
pilot. The pilot gas outlet accepts a 1⁄4” pilot line connec-
tion.
This model features a slow opening main valve that
E.C.O
provides a softer ignition and E.C.O. connections.
To permit replacement of a variety of valve sizes, some
models are furnished with two reducer bushings (two 3⁄4
”
to 1⁄2”). Also included is an E.C.O. jumper wire that allows
this valve to be used on an installation without electrical
cut off device.
SPECIFICATIONS
Electrical Rating:
PIPE SIZES/CAPACITIES
Voltage: 24 Volts, (30 Volts Max.), 60 Hz.
Current Rating: 0.23 Amps
Capacity (BTU/hr) at
1” pressure drop across valve
Nat. Gas
LP Gas
Type of Gas
Pipe Size
(inches)
1⁄2” x 3⁄8”
1⁄2” x 1⁄2”
1⁄2” x 3⁄4”
3⁄4” x 3⁄4”
(1000 BTU/cu. ft., (2500 BTU/cu. ft.,
Natural Gas
64 Sp. Gr.)
1.53 Sp. Gr.)
1
Pressure Rating: ⁄2 lb. per sq. in. (14” W.C.)
100,000
230,000
230,000
280,000
162,000
372,600
372,600
453,600
Pressure Regulator Setting:
Adjustable from 2.5 to 5.0" W.C.
(Factory preset for 3.5" W.C.)
Ambient Temperature: -40° to 175°F
Thermocouple:
Upright, 90° from upright or vertical
INLET BOSS
UPRIGHT
UP OR DOWN
30 millivolt type
LEFT OR RIGHT
CONTENTS
Description ......................................................... 1
Specifications..................................................... 1
Precautions ........................................................ 2
Installation.......................................................... 2
Main Piping Connection
O F F
ON
Pilot Gas Connection
Energy Cut Off (E.C.O.) Connection
Thermocouple Connection
System Wiring
NOTE: Control shown may not be identical
to replacement control.
Adjustment ......................................................... 4
Pilot Gas Adjustment
Figure 1. Gas valve mounting positions
Pressure Regulator Adjustment
Pilot Lighting Instructions and Precautions ........ 5
WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
PART NO. 37-5825B
9797 REAVIS ROAD, ST. LOUIS, MO 63123-5398
(314) 577-1300, FAX (314) 577-1517
Replaces 37-5825A
Printed in U.S.A.
9999 HWY. 48, Markham, ONT, L3P 3J3
(905) 475-4653, FAX (905) 475-4625
0024
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INSTALLATION (cont’d)
Drop
THERMOCOUPLE CONNECTION
Horizontal
The thermocouple connection should be clean to ensure
good electrical contact.
Run the thermocouple nut into the power unit tapping as
far as possible by hand. Then use a small wrench to set
the nut with a 1⁄4 to 1⁄2 additional turn. Do not overtighten.
Gas Valve
NOTE:
Always Include
A Drip Leg In Piping
Riser
Connect leads from E.C.O. terminals to E.C.O. device on
furnace. Test E.C.O. device for continuity. If there is no
continuity, power unit will not hold in.
3 in.
minimum
Drop
If the furnace does not have an E.C.O. device, use the
jumper provided in the pack.
Tubing Gas
Supply
Gas Valve
Riser
Horizontal
SYSTEM WIRING
CAUTION
!
Gas Valve
3 in.
minimum
To prevent electrical shock and/or equipment
damage,disconnectelectricalpowertosystemat
main fuse or circuit breaker box until installation
is complete.
3 in.
minimum
Piped Gas
Supply
Piped Gas
Supply
Figure 2. Typical gas valve piping
NOTE
Allwiringshouldbeinstalledinaccordancewithlocal
and national electrical codes and ordinances.
PILOT GAS CONNECTION
Install fitting into pilot gas outlet (see fig. 2), 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.
Alwayscheckthattheelectricalpowersupplyusedagrees
with the voltage and frequency shown on the gas control.
The typical wiring diagram shows only the terminal iden-
tification and wiring hook up. Always refer to wiring
instructionsprovidedbyEquipmentManufacturerforsys-
tem hookup operation.
PRESS
Pilot Gas
PILOT
Outlet
THERMOSTAT
TAP
GAS VALVE
TERMINAL PANEL
Gas Outlet
HIGH
LIMIT
TH TH-TR TR
HOT
LINE
24 VAC
Figure 3. Gas valve side view
TRANSFORMER
Figure 4. Wiring for 36C53
ENERGY CUT OFF (E.C.O.)
CONNECTION
THERMOCOUPLE
CONNECTION
E.C.O.
DEVICE
A five-function valve uses the 2 E.C.O. terminals that are
connected to the magnetic assembly where the thermo-
couple connects to the 36C valve line interrupter. An
E.C.O. device is mounted in the furnace near the limit
control and a lead assembly is connected to the E.C.O.
terminals on the 36C valve.
LEAD
ASSEMBLY
E.C.O. TERMINALS
Figure 5. Wiring for Energy Cut-Off (E.C.O.) connection
3
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INSTALLATION (cont’d)
PILOT FLAME ADJUSTMENT
PRESSURE REGULATOR
ADJUSTMENT
If the pilot flame is low and does not engulf the bulb of the
mercury flame sensor, the system will not energize the
mainvalve.Ifpilotgaspressureistoohigh,gaswillsputter
past the ignition electrode, and may not ignite. High pilot
gas pressure may also cause the flame to lift off the
burner,causingtheflamesensorbulbtosense"low"heat.
The pressure regulator has been factory adjusted (see
control for specific setting). Although additional adjust-
ments will not normally be necessary, you may adjust the
regulator. Donotforcetheadjustingscrewbeyondthe
limits that it can easily be adjusted.
To adjust the pilot gas pressure, remove the cover screw
(see fig. 6). To REDUCE pilot pressure, turn the pilot
adjust screw (beneath the cover screw) clockwise. To
INCREASE pilot pressure, turn the pilot adjust screw
counterclockwise. Replace and tighten cover screw.
1. Energize valve to ignite main burner.
2. Remove "Reg. Adj." cover screw (see fig. 7).
3. To DECREASE outlet pressure, turn the adjusting
screw (beneath the cover screw) counterclockwise.
To INCREASE outlet pressure, turn the adjusting
screw clockwise.
4. Replacethecoverscrew. Cyclethevalvetwoorthree
times to verify regulator setting.
Pilot Adjust
Cover Screw
Gasket
REGULATOR ADJUSTING
COVER SCREW
PILOT ADJUST
COVER SCREW
ON
O F F
P I L O T
Pilot
Adjust
Screw
Figure 6. Pilot Flame Adjustment
Figure 7. Pressure regulator adjustment
4
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PILOT LIGHTING INSTRUCTIONS
AND PRECAUTIONS
FOR YOUR SAFETY READ BEFORE LIGHTING
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 has a pilot that must be lighted by hand.
When lighting the pilot, follow these instructions exactly.
•
•
Immediatelycallyougassupplierfromaneighbor's
phone. Follow the gas supplier's instructions.
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 techni-
cian. Force or attempted repair may result in a fire of
explosion.
FOR YOUR SAFETY
"WHAT TO DO IF YOU SMELL GAS"
•
•
Do not try to light any appliance.
D. Donotusethisapplianceifanyparthasbeenunderwater.
Immediately call a qualified service technician to inspect
theapplianceandtoreplaceanypartofthecontrolsystem
and any gas control that has been under water.
Do not touch any electrical switch; do not use any
phone in your building.
LIGHTING INSTRUCTIONS
1. STOP! Read the precautionary information above.
7. Find pilot - follow small metal tubes from
gas control.
2. Set the thermostat to lowest setting.
PILOT
THERMO-
3. Turn off all electrical power to the appliance.
BURNER COUPLE
8. Turn knob on gas control counterclockwise to PILOT.
4. Depress gas control knob slightly and turn clockwise to
OFF (see fig. 7). If knob is in ON, turn clockwise to PILOT,
then depress knob slightly and turn clockwise to OFF.
9. Depresscontrolknoballthewayandholdin. Immediately
light the pilot with a match. Continue to hold the control
knob down for about one (1) minute after the pilot is lit.
Release knob and it will pop back up. Pilot should remain
lit. If it goes out, repeat steps 4, 5, 8, and 9.
ON
Gas Control
O F F
P I L O T
Knob
•
If knob does not pop up when released, turn clockwise to
OFF, stop and immediately call your service technician or
gas supplier.
36C Series
•
If the pilot will not stay lit after several tries, turn the gas
controlknobtoOFFandcallyourservicetechnicianorgas
supplier.
NOTE: Knob cannot be turned from PILOT to OFF unless
knob is depressed slightly. Do not use tools or excessive
force.
10. Replace pilot access panel(s).
5. Wait fifteen (15) minutes to clear out any gas. If you then
smell gas, STOP! Follow B in the precautionary informa-
tion above. If you don't smell gas, go to next step.
11. Turn gas control knob counterclockwise to ON.
12. Turn on all electrical power to the appliance.
13. Set thermostat to desired setting.
6. Remove the pilot access panel(s) located under the gas
control unit.
TO TURN OFF GAS TO APPLIANCE
1. Set the thermostat to lowest setting.
3. Turn gas control knob clockwise to PILOT.
2. Turn off all electrical power to the appliance if service is to 4. Depress gas control knob slightly and turn clockwise to
be performed.
OFF. Do not use tools or excessive force.
Gas Cock
Knob
Indicator
Figure 8. Gas Cock Knob
5
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If you need further information about this product, please write to
White-Rodgers Division, Emerson Electric Co.
9797 Reavis Road
St. Louis, MO 63123-5398
Attention: Technical Service Department
9999 HWY. 48
Markham, ONT, L3P 3J3
Attention: Technical Service Department
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