Printed in U.S.A. PART NO. 37-5868A
Replaces 37-5153A
9732
WHITE-RODGERS

CONTENTS

Description......................................................... 1
Specifications..................................................... 1
Precautions........................................................ 2
Installation.......................................................... 3
Main Piping Connection
Pilot Gas Connection
System Wiring
Adjustment......................................................... 4
Pilot Flame Adjustment
Pressure Regulator Adjustment
Pilot Lighting Instructions and Precautions........ 5
WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123-5398

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 36C74 Gas Valve is for use on systems providing
automatic ignition of the pilot and/or main burners and
incorporates the following features: pilot/redundant sole-
noid valve, main valve, integral pressure regulator and
male spade terminals for point-to-point wiring.
This gas valve is also equipped with a step-opening
feature to provide for quieter main burner ignition. The
valve opens partially until main burner flame is estab-
lished, then the valve opens to full operating pressure.
Electrical Rating:
24 VAC (30 Volts max. Voltage), 60 Hz.
Types of Gases: Natural or LP Gas
Pressure Rating: 14” W.C. (1⁄2 PSI)
Ambient Temperature: -40° to 175°F (-40° to 79°C)
Regulator Adjustment Range:
Natural Gas: 2.5” to 5.0” W.C. (Full flow)
LP Gas: 7.5” to 12.0” W.C. (Full flow)
(Step pressure not adjustable)

SPECIFICATIONS

INSTALLATION INSTRUCTIONS

Type 36C74

Combination Gas Valve

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. Mounting Positions
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.)
OFF
ON