Emerson White Rodgers 36C53 Series User manual

PIPE SIZES/CAPACITIES
Pipe Size
(inches)
Capacity (BTU/hr) at
1” pressure drop across valve
1⁄2” x 3⁄8”
1⁄2” x 1⁄2”
1⁄2” x 3⁄4”
3⁄4” x 3⁄4”
100,000
230,000
230,000
280,000
162,000
372,600
372,600
453,600
Nat. Gas
(1000 BTU/cu. ft.,
64 Sp. Gr.)
LP Gas
(2500 BTU/cu. ft.,
1.53 Sp. Gr.)
INSTALLATION INSTRUCTIONS
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL INJURY
AND/OR PROPERTY DAMAGE.
Operator: Save these instructions for future use!
DESCRIPTION
SPECIFICATIONS
36C53
Combination Gas Valves
(24 Volt Model)
CONTENTS
Description .......................................................................... 1
Specifications ...................................................................... 1
Precautions ......................................................................... 2
Installation ........................................................................... 2
Main Piping Connection
Pilot Gas Connection
Energy Cut Off (E.C.O.) Connection
Thermocouple Connection
System Wiring
Adjustment .......................................................................... 3
Pilot Gas Adjustment
Pressure Regulator Adjustment
Pilot Lighting Instructions and Precautions.......................... 4
OFF
PILOT
ON
E.C.O
The multi-function gas controls combine into a single 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 connection.
This model features a slow opening main valve that 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 instal-
lation without electrical cut off device.
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PART NO. 37-5825C
Replaces 37-5825B
1331
Electrical Rating:
Voltage: 24 Volts, (30 Volts Max.), 60 Hz.
Current Rating: 0.23 Amps
Type of Gas
Natural Gas
Pressure Rating: 1⁄2lb. per sq. in. (14” W.C.)
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: 30 millivolt type
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.
ON
OFF
Figure 1. Gas valve mounting positions
Figure 1. Gas valve mounting positions

2
CAUTION
!
PILOT GAS CONNECTION
Install fitting into pilot gas outlet (see fig. 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 1 1⁄2turns.
MAIN PIPING CONNECTIONS
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 orientation except upside
down. The arrow on the valve indicates the direction of gas flow
through the control.
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 fig. 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. If additional clearance for the gas cock knob is required when
installing the new valve in an existing system, rotate the knob to
the position between ON and OFF.Depress the knob while turning
the valve. The knob will depress only while in this position.
8. See SYSTEMWIRING when making electrical connections.After
all gas and electrical connections are completed, turn gas on and
SPECIFICATIONS
INSTALLATION
check for gas leaks with leak detection solution or soap suds.
Bubbles forming indicate a leak. SHUT OFF GAS AND FIX ALL
LEAKS IMMEDIATELY.
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
Figure 2. Typical gas valve piping
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 WIRE JUMPER on pilot systems, such as
standing pilot, proven pilot, or spark-to-pilot ignition–a
fire and/or explosion may result.
5. 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.
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 pro-
tection must be provided to shield the control from
exposure to water (dripping, spraying, rain, etc.).
WARNING
!If you do not follow these instructions exactly, a fire or explosion may
result, causing property damage, personal injury or loss of life.
Figure 2. Typical gas valve piping

3
INSTALLATION
Pilot Gas
Outlet
Gas Outlet
PRESS
TAP
PILOT
Figure 3. Gas valve side view
THERMOCOUPLE CONNECTION
The thermocouple connection should be clean to ensure good
electrical contact.
Run the thermocouple nut into the power unit tapping as far as pos-
sible by hand. Then use a small wrench to set the nut with a 1⁄4to 1⁄2
additional turn. Do not overtighten.
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.
If the furnace does not have an E.C.O. device, use the jumper pro-
vided in the pack.
SYSTEM WIRING
CAUTION
!
To prevent electrical shock and/or equipment damage,
disconnect electrical power to system at main fuse or circuit
breaker box until installation is complete.
ENERGY CUT OFF (E.C.O.) CONNECTION
A five-function valve uses the 2 E.C.O. terminals that are connected
to the magnetic assembly where the thermocouple 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.
THERMOCOUPLE
CONNECTION E.C.O.
DEVICE
LEAD
ASSEMBLY
E.C.O. TERMINALS
Figure 5. Wiring for Energy Cut-Off (E.C.O.) connection
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.
The typical wiring diagram shows only the terminal identification
and wiring hook up. Always refer to wiring instructions provided by
Equipment Manufacturer for system hookup operation.
PRESSURE REGULATOR ADJUSTMENT
The pressure regulator has been factory adjusted (see control
for specific setting). Although additional adjustments will not
normally be necessary, you may adjust the regulator. Do not
force the adjusting screw beyond the limits that it can
easily be adjusted.
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) counter-
clockwise. To IN-
CREASE outlet pres-
sure, turn the adjust-
ing screw clockwise.
4. Replace the cover
screw. Cycle the valve
two or three times to
verify regulator setting.
Pilot Adjust
Cover Screw
Gasket
Pilot
Adjust
Screw
Figure 6. Pilot Flame Adjustment
OFF
PILOT
ON
PILOT ADJUST
COVER SCREW
Figure 7. Pressure regulator adjustment
REGULATOR ADJUSTING
COVER SCREW
PILOT FLAME ADJUSTMENT
If the pilot flame is low and does not engulf the bulb of the
mercury flame 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 gas pres-
sure, 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.
ADJUSTMENT
GAS VALVE
TERMINAL PANEL
Figure 4. Wiring for 36C53
TH TH-TR TR
LINE
HIGH
LIMIT
24 VAC
HOT
TRANSFORMER
THERMOSTAT
Figure 3. Gas valve side view
Figure 4. Wiring for 36C53
Figure 5. Wiring for Energy Cur-Off (E.C.O.) connection
Figure 6. Pilot flame adjustment
Figure 7. Pressure regulator adjustment

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 has a pilot that must be lighted by hand.When lighting
the pilot, follow these instructions exactly.
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.
FOR YOUR SAFETY
"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.
• 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redepartment.
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.
D. Do not use this appliance if any part has been underwater. Immedi-
ately call a qualified service technician to inspect the appliance and
to replace any part of the control system and any gas control that
has been underwater.
LIGHTING INSTRUCTIONS
1. STOP! Read the precautionary information above.
2. Set the thermostat to lowest setting.
3. Turn off all electrical power to the appliance.
4. Depress gas control knob slightly and turn clockwise to OFF (see fig.
8). If knob is in ON, turn clockwise to PILOT, then depress knob slightly
and turn clockwise to OFF.
NOTE: Knob cannot be turned from PILOT to OFF unless knob is
depressed slightly. Do not use tools or excessive force.
5. Wait fifteen (15) minutes to clear out any gas. If you then smell gas,
STOP! Follow Bin the precautionary information above. If you don't
smell gas, go to next step.
6. Remove the pilot access panel(s) located under the gas control unit.
7. Find pilot - follow small metal tubes from gas control.
8. Turn knob on gas control counterclockwise to PILOT.
9. Depress control knob all the way and hold in. 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.
• Ifknobdoesnotpopupwhenreleased,turnclockwisetoOFF,
stop and immediately call your service technician or gas supplier.
• Ifthepilotwillnotstaylitafterseveraltries,turnthegascontrol
knob to OFF and call your service technician or gas supplier.
10. Replace pilot access panel(s).
11. Turn gas control knob counterclockwise to ON.
12. Turn on all electrical power to the appliance.
13. Set thermostat to desired setting.
TO TURN OFF GAS TO APPLIANCE
1. Set the thermostat to lowest setting.
2. Turn off all electrical power to the appliance if service is to be performed.
3. Turn gas control knob clockwise to PILOT.
4. Depress gas control knob slightly and turn clockwise to OFF. Do not
use tools or excessive force.
PILOT
BURNER
THERMO-
COUPLE
OFF
PILOT
ON
Gas Control
Knob
36C Series
PILOT LIGHTING INSTRUCTIONS AND PRECAUTIONS
Indicator Gas Cock
Knob
Figure 8. Gas Cock Knob
ON
OFF
PILOT
White-Rodgers is a business
of Emerson Electric Co.
The Emerson logo is a
trademark and service mark
of Emerson Electric Co.
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