White Rodgers 25M01A-101, 25M01A-100 Installation Instructions
25M01A-100 to 25M01A-199
HSI Single Stage Combination Gas Valve
INSTALLATION 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 25M01A series valve is a combination gas pressure
regulator and dual automatic gas valve. These valves are designed for gas clothes dryers with Hot Surface Ignition (HSI)
systems. These valves are equipped with redundant and main
solenoid valves that control the gas flow to the burner, and a
direct acting pressure regulator.
SPECIFICATIONS
Type of Gas: Natural gas
LP gas (use conversion kit)
Pressure Regulator Setting:
Nat. Gas – 2.5" to 5.4" W.C.
LP Gas – 7.0 to 12.0"W.C.
Ambient Temperature: 32° to 155°F
1
Pressure Rating: 14" W.C. (
Voltage: 120 VAC
Frequency: 60 Hz
Current: .06 amps
CONTENTS
Description ........................................................ 1
Specifications .................................................... 1
Precautions ....................................................... 2
Installation ......................................................... 2
Adjustment ........................................................ 3
Pressure Regulator Adjustment
Lighting Instructions ........................................... 4
/2 PSI) max.
Mounting Positions:
Control may be mounted in the following positions: horizontal,
vertical or 90° of horizontal. NOT UPSIDE DOWN.
PIPE SIZES/CAPACITIES
Pipe Sizes
Available
(inches)
3
/8" NPT
Inlet
AGA Std. Nat. Gas
(1,000 BTU/cu. ft.)
Capacity (BTU/hr) at
1” pressure drop across valve
LP Gas
(2,500 BTU/cu. ft.)
40,000
65,000
www.white-rodgers.com
www.emersonclimate.com
PART NO. 37-6643B
Replaces 37-6643A
1207
PRECAUTIONS
G
H
F
E (not shown)
C
B
D
B
A
DO NOT BEGIN INSTALLATION UNTIL YOU READ THE
FOLLOWING PRECAUTIONS.
!
WARNING
1. Failure to turn off electric or main gas supply to
clothes dryer 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.
!
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.
INSTALLATION
1. Before attempting to service dryer, unplug power cord,
turn off main gas supply and consult dryer manufacturer's
instructions for accessing gas valve.
2. Disconnect exhaust vent duct.
3. Disconnect gas line from rear of dryer.
4. Remove access panel from dryer. On some models this
involves removing the entire front panel.
5. The gas valve/burner assembly should now be visible.
6. The burner assembly consists of (see figure 1 & 2):
a. Gas inlet pipe.
b. Brass inlet fitting with union – some models may also
have a manual shut-off valve.
c. Gas valve.
d. Mounting bracket.
e. Burner orifice.
f. Burner assembly with air shutter.
g. Igniter.
h. Radiant sensor – located on heat exchanger on
some models.
7. Disconnect the wiring harness from gas valve and igniter.
8. Remove screw(s) fastening the mounting bracket to the
bottom of dryer.
9. Burner assembly should now be free to slide out of the
front of dryer. Take care not to bump or jar igniter. It is
very fragile.
10. Remove the gas inlet pipe by unscrewing the union.
11. Remove screw(s) fastening the gas valve to the mounting
bracket and set them aside. They will be reused.
12. The gas valve should now be free to slide out of burner
and off of mounting bracket. Take care not to disturb the
air shutter.
3. NEVER USE FLAME OR ANY KIND OF SPARK TO
CHECK FOR GAS LEAKS–COULD CAUSE FIRE
AND/OR EXPLOSION.
4. 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.).
G
H
E (not shown)
C
F
B
Figure 2
Figure 1
C
A
B
D
E
2
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