36H UNIVERSAL GAS VALVES
FIELD
CONVERSION INSTRUCTIONS
FAILURE TO READAND FOLLOWALL INSTRUCTIONS CAREFULLY BEFORE
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL
INJURY AND/OR PROPERTY DAMAGE.
DESCRIPTION
The36Huniversalgasvalvesaredesignedforuseonautomatic
spark ignition systems. The valves are shipped from the factory
set for natural gas non-piloted applications. See the Installation
Instructions included with the valves for proper installation.
This document shows the modifications required if the valve is
to be installed on an LP gas and/or piloted gas application.
Model
No.
No.
of Stages
Opening
Characteristics
36H32-XXX
36H33-XXX
36H64-XXX
36H65-XXX
1
1
2
2
Fast
Slow
Fast
Slow
LP GAS CONVERSION
For LP gas conversion, use the LP conversion kit supplied
separately with this control. Refer to the instructions packed
separately with LP conversion kit.
PILOTED GAS APPLICATIONS
WIRING
PILOT GAS CONNECTION
These valves are shipped with an external wire jumper installed
fornon-pilotedgasapplications.Forapplicationsrequiringpiloted
gas, such as intermittent pilot or spark-to-pilot systems, remove
the external wire jumper from the main (M) and pilot (P) valve
terminals (see figure 1).
These gas valves are shipped with the pilot outlet plugged. For
installations requiring pilot gas, remove the plug from the pilot
gas outlet (see figure 2) and use the fitting packed separately
with the valve.
Install the fitting into the pilot gas outlet, turning until finger tight.
Insert clean, de-burred ¼” O.D. tubing all the way through the
fitting. While holding the tubing securely, slowly tighten the fit-
ting until you feel a slight “give”. Tighten the fitting an additional
1-1/2 turns.
SW1
SW2
C
EXTERNAL
JUMPER
(+)
(-)
(+)
(-)
RECTIFIER
The plug should not be removed for a Direct Burner Ignition
system such as Direct Spark or Hot Surface Ignition.
RECTIFIER
SW1
SW2
P
Refer to the 36H Series Installation Instructions for pilot flame
adjustment information.
PILOT (REDUNDANT)
M
Pilot Gas
Outlet
MAIN
(+)
TWO STAGE
MODELS ONLY
(-)
RECTIFIER
2ND
STAGE
HI
Outlet
Pressure
Tap
Figure 1. Gas valve internal wiring and terminal
identification
Main Gas
Outlet
Refer to the 36H Series Installation Instructions for additional
system wiring information.
Figure 2. Gas valve outlet end
PART NO. 37-6658D
Replaces 37-6658C
0927
White-Rodgers is a division
of Emerson Electric Co.
The Emerson logo is a
trademark and a service mark
of Emerson Electric Co.
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