White Rodgers 36E93-304 User Manual

36E93-304

WHITE-RODGERS

Delay-Opening Combination Gas Valve

INST ALLA TION INSTRUCTIONS

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.

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.

PIPE SIZES/CAPACITIES

Capacity (BTU/hr) at

Pipe Sizes Available

(inches)

3

⁄8” x 3⁄8” NPT any combination

3

⁄8” x 3⁄4” NPT straight through

1

⁄2” x 3⁄8” NPT any combination

1

⁄2” x 1⁄2” NPT any combination

1

⁄2” x 3⁄4” NPT straight through

1” pressure drop across valve

AGA Std. Nat. Gas

(1,000 BTU/cu. ft.)

75,000

75,000
100,000
140,000
140,000

CONTENTS

Description......................................................... 1

Specifications..................................................... 1

Precautions........................................................ 2

Installation.......................................................... 3

Pilot Gas Connection
System Wiring

Adjustment......................................................... 5

Manual Valve Knob
Pilot Gas Adjustment
Pressure Regulator Adjustment

Ambient Temperature:

-40° to 175°F

Pressure Rating: 14” W.C. (1⁄2 PSI) max.
Voltage: 24 VAC
Frequency: 50/60 Hz

LP Gas

(2,500 BTU/cu. ft.)

121,500
121,500
162,000
226,800
226,800

SPECIFICA TIONS

MOUNTING POSITIONS:

Upright, or 0° to 90° from upright

INLET BOSS

UPRIGHT LEFT OR RIGHT

INLET
PRESS
TAP

PRESS

INLET

TAP

Figure 1. Gas valve mounting positions

UP OR DOWN

360°

PILOT ADJ

WHITE-RODGERS DIVISION

EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123-5398

Printed in U.S.A.

PART NO. 37-5291C

Replaces 37-5291B

9615

PRECAUTIONS

DO NOT BEGIN INSTALLATION UNTIL YOU READ
THE FOLLOWING PRECAUTIONS.

!

WARNING

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.

!

CAUTION

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.

If you do not follow these instructions exactly, a fire or explosion may
result, causing property damage, personal injury or loss of life.

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.

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.).

2

INSTALLATION

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 position, except
upside down. The arrow on the bottom plate indicates
the 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 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 exces­sively, as this may damage the valve.

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
leak detection solution or soap suds. Bubbles forming
indicate a leak. SHUT OFF GAS AND FIX ALL

LEAKS IMMEDIATELY.

PILOT GAS CONNECTION

These valves are shipped with the pilot outlet plugged. For
installations requiring pilot gas, remove the plug and use
the fitting packed separately with the control.

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.

See ADJUSTMENT section (page 5) and fig. 6 for pilot set
up.

Pilot Gas

Outlet

Pressure

Tap

PRESS

PILOT

OUT
TAP

Figure 2

Regulator

Vent

Main Gas

Outlet

Horizontal

3 in.

minimum

All piping must comply with local codes, ordinances,
and/or national fuel gas codes.

NOTE: ALWAYS INCLUDE A
DRIP LEG IN PIPING

Drop

Gas Valve

Piped Gas

Supply

NOTE

Gas Valve

Riser

3 in.

minimum

Piped Gas

Supply

Figure 3. Typical gas valve piping

Horizontal

Riser

3 in.

minimum

Tubing Gas

Drop

Gas Valve

Supply

3

INST ALLATION (cont’d)

SYSTEM WIRING

REFER TO AND FOLLOW THE APPLIANCE
MANUFACTURER’S WIRING DIAGRAM. REFER TO
FIG. 4 FOR TERMINAL IDENTIFICATION.

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.

5
1
4

2
3

PILOT ADJ

Pressure

Rectifier

Bridge

Redundant

Switch

5
1

Main

4
2
3

Figure 4. Gas valve wiring diagram

4

ADJUSTMENT

MANUAL VALVE KNOB

The manual valve knob is a two-position (ON-OFF) type.
To turn manual valve on, rotate knob clockwise or coun­terclockwise 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

Indicator

Figure 5. Manual gas valve knob

Manual valve knob

shown in OFF position

PILOT GAS ADJUSTMENT

These controls are factory preset to provide proper pilot
gas flow for most applications. If additional adjustment is
necessary, 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.

3. Replace the gasket and pilot adjust cover screw and
tighten securely.

4. Restore power to the system.

Pilot

Cover Screw

Regulator

Cover Screw

Gasket

Plastic

Adjust Screw

Pilot

Adjust Screw

PRESSURE REGULATOR

ADJUSTMENT

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.

If a valve has been factory-adjusted for the 2.5 to 5 inches
W.C. range, it cannot be field-adjusted outside that range.
This is also true for valves adjusted to the 7.5 to 12 inches
W.C. range for LP gas.

1. Turn off all electrical power to the system.

2. Attach a manometer to the outlet pressure tap of the
valve.

3. Turn on system power and energize valve.

4. Remove regulator cover screw and turn regulator
adjust screw clockwise to increase pressure, or
counterclockwise to decrease pressure (see fig. 6).
Always adjust regulator to provide the correct pres­sure according to the original equipment
manufacturer’s specifications listed on the appliance
rating plate.

5. Replace regulator cover screw and tighten securely.

Regulator

Spring

Figure 6

5

LIGHTING INSTRUCTIONS

FOR YOUR SAFETY READ BEFORE OPERATING

!

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.

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.

If you do not follow these instructions exactly, a fire or explosion
may result causing property damage, personal injury or loss of life.

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.

OPERATING INSTRUCTIONS

1. STOP! Read the safety information above on this label.

2. Set the thermostat to lowest setting.

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.

5. Remove control access panel.

6. Turn gas control knob clockwise to “OFF.”

• 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.

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.

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.

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.

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.

2. Turn off all electric power to the appliance if service is to
be performed.

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

4. Turn gas control knob clockwise to “OFF.” Do not force.

5. Replace control access panel.