36E93-304
Delay-Opening Combination Gas Valve
INSTALLATION INSTRUCTIONS
WHITE-RODGERS
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 36E93-304 combination gas valve is designed for
intermittent ignition system applications. The valve is
equipped with a redundant solenoid valve that controls
gas flow to the pilot and main burners, a main valve that
controls gas flow to the main burner, a pressure regulator
to maintain a constant outlet pressure, and a two-position
gas cock knob for manual gas shut-off.
SPECIFICATIONS
Type of Gas: Natural gas
LP gas (use conversion kit)
Pressure Regulator Setting:
Nat. Gas – 2.5 to 5.0” W.C.
LP Gas – 7.0 to 12.0” W.C.
Ambient Temperature:
-40° to 175°F
Pressure Rating: 14” W.C. (1⁄2 PSI) max.
Voltage:
24 VAC
Frequency:
50/60 Hz
PIPE SIZES/CAPACITIES
Capacity (BTU/hr) at
1” pressure drop across valve
Pipe Sizes Available
(inches)
AGA Std. Nat. Gas
LP Gas
(1,000 BTU/cu. ft.) (2,500 BTU/cu. ft.)
3
⁄
8” x 3⁄8” NPT any combination
75,000
75,000
100,000
140,000
140,000
121,500
121,500
162,000
226,800
226,800
3
⁄
8” x 3⁄4” NPT straight through
1
⁄
⁄
2” x 3⁄8” NPT any combination
2” x 1⁄2” NPT any combination
1
MOUNTING POSITIONS:
Upright, or 0° to 90° from upright
1
⁄
2” x 3⁄4” NPT straight through
INLET BOSS
UP OR DOWN
UPRIGHT
LEFT OR RIGHT
CONTENTS
360°
Description ......................................................... 1
Specifications..................................................... 1
Precautions ........................................................ 2
Installation.......................................................... 3
Pilot Gas Connection
INLET
PRESS
TAP
System Wiring
Adjustment ......................................................... 5
Manual Valve Knob
Pilot Gas Adjustment
Pressure Regulator Adjustment
Figure 1. Gas valve mounting positions
WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123-5398
PART NO. 37-5291C
Replaces 37-5291B
9615
Printed in U.S.A.
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INSTALLATION
PILOT GAS CONNECTION
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.
Thesevalvesareshippedwiththepilotoutletplugged.For
installations requiring pilot gas, remove the plug and use
the fitting packed separately with the control.
3. The control may be installed in any position, except
upsidedown. Thearrowonthebottomplateindicates
the direction of gas flow through the valve.
Install the fitting into the pilot gas tapping, turning until
finger-tight (see fig. 2). Insert clean, deburred tubing all
the way through the fitting. Hold the tubing securely in
place and slowly tighten the fitting until you feel a slight
“give”. Then tighten the fitting an additional 11⁄2 turns.
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.
SeeADJUSTMENTsection(page5)andfig.6forpilotset
up.
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 com-
pound or teflon tape to the first two threads (see fig. 3
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 exces-
sively, as this may damage the valve.
Pilot Gas
Outlet
PILOT
Regulator
Vent
7. See SYSTEM WIRING when making electrical con-
nections. After all gas and electrical connections are
completed, turn gas on and check for gas leaks with
leakdetectionsolutionorsoapsuds.Bubblesforming
indicate a leak. SHUT OFF GAS AND FIX ALL
LEAKS IMMEDIATELY.
Pressure
Tap
Main Gas
Outlet
OUT
PRESS
TAP
Figure 2
NOTE
All piping must comply with local codes, ordinances,
and/or national fuel gas codes.
NOTE: ALWAYS INCLUDE A
DRIP LEG IN PIPING
Drop
Drop
Gas Valve
Horizontal
Riser
Horizontal
Gas Valve
Gas Valve
3 in.
minimum
3 in.
minimum
3 in.
minimum
Riser
Piped Gas
Supply
Piped Gas
Supply
Tubing Gas
Supply
Figure 3. Typical gas valve piping
3
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INSTALLATION(cont’d)
SYSTEM WIRING
5
1
4
REFER TO AND FOLLOW THE APPLIANCE
MANUFACTURER’S WIRING DIAGRAM. REFER TO
FIG. 4 FOR TERMINAL IDENTIFICATION.
2
3
NOTE
All wiring should be installed in accordance with local and
national electrical codes and ordinances.
PILOT ADJ
Alwayscheckthattheelectricalpowersupplyusedagrees
with the voltage and frequency shown on the gas control.
Pressure
Switch
Rectifier
Bridge
5
1
Redundant
Main
4
2
3
Figure 4. Gas valve wiring diagram
4
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ADJUSTMENT
MANUAL VALVE KNOB
The manual valve knob is a two-position (ON-OFF) type.
To turn manual valve on, rotate knob clockwise or coun-
terclockwise to line up the word ON on the knob with the
indicator on the cover casting (see fig. 5). To turn manual
valve off, rotate knob clockwise or counterclockwise to
line up the word OFF on the knob with the indicator on the
cover casting.
PILOT ADJ
Manual valve knob
shown in OFF position
Indicator
Figure 5. Manual gas valve knob
PILOT GAS ADJUSTMENT
PRESSURE REGULATOR
ADJUSTMENT
These controls are factory preset to provide proper pilot
gas flow for most applications. If additional adjustment is
necessary, follow these steps.
These controls are shipped from the factory with the
regulator set for 3.5” W.C. (natural gas, full flow). Consult
the appliance rating plate to ensure burner manifold
pressure should be 3.5” W.C. If another outlet pressure is
required, follow these steps.
1. Turn off all electrical power to the system before
making any adjustments.
2. Remove the pilot adjust cover screw and gasket to
expose the adjusting screw (see fig. 6). Turn the
adjusting screw clockwise to reduce pilot flame, or
counterclockwise to increase pilot flame.
If a valve has been factory-adjusted for the 2.5 to 5 inches
W.C. range, itcannotbefield-adjustedoutsidethatrange.
This is also true for valves adjusted to the 7.5 to 12 inches
W.C. range for LP gas.
3. Replace the gasket and pilot adjust cover screw and
tighten securely.
1. Turn off all electrical power to the system.
4. Restore power to the system.
2. Attach a manometer to the outlet pressure tap of the
valve.
Pilot
Cover Screw
3. Turn on system power and energize valve.
4. Remove regulator cover screw and turn regulator
adjust screw clockwise to increase pressure, or
counterclockwisetodecreasepressure(seefig. 6).
Always adjust regulator to provide the correct pres-
sure according to the original equipment
manufacturer’s specifications listed on the appliance
rating plate.
Regulator
Cover Screw
Gasket
Pilot
Adjust Screw
Plastic
Adjust Screw
5. Replace regulator cover screw and tighten securely.
Regulator
Spring
Figure 6
5
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LIGHTING INSTRUCTIONS
FOR YOUR SAFETY READ BEFORE OPERATING
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 is equipped with an intermittent ignition
device which automatically lights the appliance. Do not try
to light the pilot by hand.
• If you cannot reach your gas supplier, call the fire
department.
C. Use only your hand to turn the gas control knob. Never
use tools. If the knob will not 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.
B. BEFORE OPERATING 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.
D. Do not use this appliance if any part has been under
water. Immediately call a qualified service technician to
inspect the appliance and to replace any part of the
control system and any gas control which has been
under water.
• 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.
OPERATING INSTRUCTIONS
1. STOP! Read the safety information above on this label.
2. Set the thermostat to lowest setting.
7. Wait five (5) minutes to clear out any gas. If you then
smell gas, STOP! Follow “B” in the safety information
above on this label. If you don’t smell gas, go to the
next step.
3. Turn off all electric power to the appliance.
4. This appliance is equipped with an ignition device which
automatically lights the pilot. Do not try to light the pilot
by hand.
8. Turn gas control knob counterclockwise to “ON.”
9. Replace control access panel.
10. Turn on all electric power to the appliance.
11. Set thermostat to desired setting.
5. Remove control access panel.
6. Turn gas control knob clockwise to “OFF.”
12. If the appliance will not operate, follow the instructions
“To Turn Off Gas To Appliance” and call your service
technician or gas supplier.
TO TURN OFF GAS TO APPLIANCE
1. Set the thermostat to lowest setting.
4. Turn gas control knob clockwise to “OFF.” Do not force.
2. Turn off all electric power to the appliance if service is to
be performed.
5. Replace control access panel.
3. Remove control access panel.
If you need more information about this product, you may write to us at::
WHITE-RODGERS DIVISION, Emerson Electric Co.
9797 Reavis Road
St. Louis, MO 63123-5398
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