White Rodgers 36H User Manual
36H SERIES
360˚
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
The 36H series combination gas valve is designed with redundant and main solenoid valves that control gas flow to the main
burners, a pressure regulator to maintain a constant outlet pressure, and a two position on/off switch for electrical shutoff.
Model numbers below include features as described:
Model
No.
36H22 1 Fast NO
36H23 1 Slow NO
36H32 1 Fast YES
36H33 1 Slow YES
36H54 2 Fast NO
36H55 2 Slow NO
36H64 2 Fast YES
36H65 2 Slow YES
# of
Stages
Open
Characteristics
Proven
Pilot
SPECIFICATIONS
Pressure Regulator Setting: (“ W.C.)
Two Stage
Single
Stage
Natural Gas 2.5 - 5.0 1.0 - 3.5 2.5 - 5.0 1.5
LP Gas 7.0 - 12.0 4.0 - 9.5 8.0 - 12.0 2.5
PIPE SIZES/CAPACITIES
Pipe Sizes
Available (inches)
3/4” x 3/4” NPT 300,000 486,000
1/2” x 3/4” NPT 260,000 421,000
1/2” x 1/2” NPT 170,000 275,400
Low High
Capacity (BTU/hr) at 1”
pressure drop across valve
AGA Std. Nat. Gas
(1,000 btu/cu. ft.)
Min Diff.
Low to High
LP. Gas
(2,500 btu/cu. ft.)
Type of Gas: Natural Gas
Ambient Temperature: -40° to 175°F
Pressure Rating: 14” W.C. (1⁄2 PSI) max.
Voltage: 24 VAC
Frequency: 50/60 Hz
Current: Single Stage - .410A
Two-Stage - .540A
MOUNTING POSITIONS:
Upright, or 0° to 90° from upright
UPRIGHT
LEFT or RIGHT
INLET BOSS
VERTICAL
CONTENTS
Description ................................................................. 1
Specifications ............................................................. 1
Precautions ................................................................ 2
Installation .................................................................. 3
System Wiring
Adjustment ................................................................. 4
Pressure Regulator Adjustment
Lighting Instructions .................................................... 6
www.white-rodgers.com
www.emerson.com
Figure 1. Gas valve mounting positions
PART NO. 37-6632B
Replaces 37-6632A
0927
PRECAUTIONS
WARNING
!
WARNING
!
CAUTION
!
DO NOT BEGIN INSTALLATION UNTIL YOU 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.
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.
Properly install gas piping to control.
• Do not remove protective inlet or outlet caps until
ready to connect supply pipe to gas valve.
• Use new supply pipe, properly threaded, reamed,
de-burred, and cleaned.
• Use backup wrench, applied only to provided wrench
flats on inlet boss, when tightening the supply pipe.
Do not grip bracket, solenoid or any other part of
control.
• Do not over-tighten pipe to control (50ft-lbs max.)
• Always install sediment trap in the gas supply line
to prevent contamination of gas valve.
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.
6. Do not use a gas valv e w h i c h a p p ears
to be damaged. A damaged valve may cause
personal injury and/or property damage due to shock,
gas suffocation, fire and/or explosion. Contact supplier to replace any valve that appears to have been
damaged.
7. Do not use a gas valve that has been in direct contact
with water. Water entering gas valve may result in concealed internal damage to gas valve. 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 protection must be provided to shield the
control from exposure to water (dripping, spraying,
rain, etc.).
3. Clean gas piping of contaminants, cutting fluid, or
other chemicals which might react harmfully with
the gas valve components before install.
Failure to install properly can cause gas leakage resulting in injury due to fire or explosion.
2
INSTALLATION
Piped Gas
Supply
Piped Gas
Supply
Tubing Gas
Supply
NOTE: ALWAYS INCLUDE A
DRIP LEG IN PIPING
NOTE: A MANUAL SHUTOFF VALVE
MUST BE INSTALLED WITHIN
6 FEET OF THE EQUIPMENT
Horizontal
Drop
Gas Valve
3 in.
minimum
Gas Valve
Riser
3 in.
minimum
Drop
Horizontal
Riser
Gas Valve
3 in.
minimum
Pilot Gas Outlet
Gas Outlet
NOTE
NOTE
MAIN PIPING CONNECTIONS
Re fer to wa r nin gs an d cau tion s on p age 2 before
attempting installation. 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. This valve may be installed upright, + or – 90˚ from upright,
or vertical (refer to figure 1). The arrows on the valve identification label and on the bottom plate indicate 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 fig. 3 for typical piping connections).
6. Do not tighten piping excessively, as this may damage the
valve (50ft lbs max).
7. See SYSTEM WIRING 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.
PILOT GAS CONNECTION
MODELS 36H3X AND 36H6X REQUIRE A PILOT
CONNECTION.
Loosen the pilot fitting until it is 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.
Figure 2. gas valve outlet end
All piping must comply with local codes, ordinances, and/
or national fuel gas codes.
Figure 3. typical gas valve piping
3
INSTALLATION
Redundant
Coil
(+)
(-)
SW1
SW1
SW2
P
C
Main
Coil
(+)
(-)
M
SW2
Two-Stage
Coil
(+)
(-)
RECTIFIER
Rectifier
Rectifier
HI
Two Stage Models Only
Rectifier
SW1
SW1
SW2
SW2
(+)
(-)
PM
C
HI
Main
Coil
Redundant
Coil
Two-stage
Coil
Two Stage Models Only
NOTE
NOTE
SYSTEM WIRING
REFER TO AND FOLLOW THE APPLIANCE MANUFACTURER’S WIRING DIAGRAM. REFER TO FIG. 4
FOR TERMINAL IDENTIFICATION.
WIRING DIAGRAM - HSI MODELS
36H2X & 36H5X
Figure 4. System Wiring
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.
WIRING DIAGRAM -
PILOTED MODELS
36H3X & 36H6X
ADJUSTMENT
PRESSURE REGULATOR ADJUSTMENT
These controls are shipped from the factory with the regulator
set as specified on the control label. Consult the appliance rating plate to ensure burner manifold pressure is as specified. If
another outlet pressure is required, follow these steps.
Natural Gas: Two-Stage Models - Low outlet pressure will
be factory-adjusted in the 1 to 3.5” W.C. range and high outlet
pressure will be factory-adjusted in the 2.5 to 5” range. The
valve cannot be adjusted outside this range and the high outlet
pressure setting must always be set at least 1.5” above the low
outlet pressure setting.
Single Stage Models- Outlet pressure will be factory-adjusted
in the 2.5” to 5” range. The valve cannot be adjusted outside
this range.
LP Gas: Two-Stage Models - Low outlet pressure will factoryadjusted in the 4” to 9.5” W.C. range and high outlet pressure
will be adjusted in the 8 to 12” W.C. range. The valve cannot
be adjusted outside this range and the high outlet pressure
setting must always be set at least 2.5” above the low outlet
pressure setting.
Single Stage Models - Outlet pressure will be factory-adjusted
in the 7 to 12” range. The valve cannot be adjusted outside this
range.
4
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