White Rodgers 36C21 User Manual
36C21 Series
WHITE-RODGERS
Main Gas Valves
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
These Gas Valves control the flow of gas to the main
burner under command of a room thermostat. They are
suitable for use on all gases and may be used with all
types of gas heating equipment. They may be mounted in
any position except upside down.
NOTE
Some parts of this gas valve are also used to make more
complex combination gas controls. Disregard the notations “Pilot”, “Pilot Adj.” and “Vent ”. Although these
notations do appear on the valve, they are not functional
on model 36C21 Series controls.
Electrical Rating:
Main Valve
Model No. Voltage
36C21U
36C21
36C21A
750 MV
24 volts
120 volts
Current
.23 Amp
.035 Amp
Maximum Pressure Rating:
14" W.C. (1⁄2 lb. per sq. in.)
Ambient Temperature: -40° to 175°F
PIPE SIZES/CAPACITIES
Capacity (BTU/hr) at
1” pressure drop across valve
Nat. Gas
Pipe Size
(inches)
1
⁄2” x 3⁄8”
1
⁄2” x 1⁄2”
1
⁄2” x 3⁄4”
3
⁄4” x 3⁄4”
(1000 BTU/cu. ft.,
64 Sp. Gr.)
100,000
230,000
230,000
280,000
(2500 BTU/cu. ft.,
1.53 Sp. Gr.)
D.C.
LP Gas
162,000
372,600
372,600
453,600
SPECIFICATIONS
CAUTION
!
Do not use this valve on indoor LP gas furnaces
except with 100% shut-off system.
Mounting: Any position except upside-down
MOUNTING POSITIONS:
Upright, 90° from upright or vertical
UPRIGHT
LEFT OR RIGHT
INLET BOSS
UP OR DOWN
360°
WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123-5398
Printed in U.S.A.
PART NO. 37-4048B
Replaces 37-4048, 37-2570, 37-1972
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
Loading...