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VR8304 INTERMITTENT PILOT COMBINATION GAS CONTROL
3 69-0625—03
Choose Gas Control Location
Do not locate the gas control where it may be affected by
steam cleaning, high humidity, dripping water, corrosive
chemicals, dust or grease accumulation, or excessive heat.
To ensure proper operation, follow these guidelines.
• Locate the gas control in a well ventilated area.
• Mount the gas control high enough above the
cabinet bottom to avoid exposure to flooding or
splashing water.
• Ensure the ambient temperature does not
exceed the ambient temperature ratings for each
component.
• Cover the gas control if the appliance is cleaned
with water, steam, or chemicals or to avoid dust
and grease accumulation.
• Avoid locating the gas control where exposure to
corrosive chemical fumes or dripping water is
likely.
Locate the gas control in the appliance vestibule on the
gas manifold. In replacement applications, locate the gas
control in the same location as the old gas control.
Install Piping to the Gas Control
All piping must comply with local codes and ordinances or
with the National Fuel Gas Code (ANSIZ223.1 NFPA No.
54), whichever applies. Tubing installation must comply
with approved standards and practices.
1. Use new, properly reamed pipe free of chips. If tub-
ing is used, ensure the ends are square, deburred
and clean. All tubing bends must be smooth and
without deformation.
2. Run a pipe or tubing to the gas control. If tubing is
used, obtain a tube-to-pipe coupling to connect the
tubing to the gas control.
3. Install a sediment trap in the supply line to the gas
control. See Fig. 2.
Install the Gas Control
1. Mount the gas control 0–90 degrees in any direction
from the upright position of the gas control knob,
including vertically.
2.
Mount the gas control so that gas flow is in the direc-
tion of the arrow on the bottom of the gas control.
3. Thread the pipe the amount shown in Table 5 for
insertion into the gas control or adapter. DO NOT
THREAD THE PIPE TOO FAR. Valve distortion or
malfunction may result if the pipe is inserted too
deeply into the gas control.
4. Apply a moderate amount of good quality pipe com-
pound (DO NOT use Teflon tape) to the pipe only,
leaving two end threads bare. On LP installations,
use a compound resistant to LP gas. Refer to Fig. 3.
5. Remove the seals over the gas control inlet and
outlet if necessary.
6.
Connect the pipe to the gas control inlet and outlet.
Use a wrench on the square ends of the gas control. If
an adapter is used, place the wrench on the adapter
rather than the gas control. Refer to Figs. 4 and 5.
Table 5. NPT pipe thread length (inches)
Fig. 2. Install a sediment trap.
Fig. 3. Use a moderate amount of pipe compound.
Fig. 4. Top view of gas control.
Connect Pilot Gas Tubing
1. Cut tubing to desired length and bend as necessary
for routing to the pilot burner. Do not make sharp
bends or deform the tubing. Do not bend tubing at
gas control or pilot burner after compression fitting
has been tightened, as this may result in gas leak-
age at the connection.
2.
Square off and remove burrs from the ends of tubing.
Pipe size
Thread pipe this
amount
Maximum depth pipe
can be inserted into the
control
318 9/16 3/8
1/2 3/4 1/2
3/4 13/16 3/4
GAS
CONTROL
GAS
CONTROL
HORIZONTAL
DROP
PIPED
GAS
SUPPLY
PIPED
GAS
SUPPLY
3 IN.
(76 MM)
MINIMUM
3 IN.
(76 MM)
MINIMUM
RISER
GAS
CONTROL
TUBING
GAS
SUPPLY
HORIZONTAL
DROP
3 IN.
(76 MM)
MINIMUM
RISER
M3077A
2
1
2
2
1
2
ALL BENDS IN METALLIC TUBING SHOULD BE SMOOTH.
CAUTION: SHUT OFF THE MAIN GAS SUPPLY BEFORE REMOVING
END CAP TO PREVENT GAS FROM FILLING THE WORK AREA. TEST
FOR GAS LEAKAGE WHEN INSTALLATION IS COMPLETE.
TWO IMPERFECT
THREADS
GAS CONTROL
THREAD PIPE THE AMOUNT
SHOWN IN TABLE FOR
INSERTION INTO GAS CONTROL
APPLY A MODERATE AMOUNT OF
PIPE COMPOUND TO PIPE ONLY
(LEAVE TWO END THREADS BARE).
M3075B
PIPE
OUTLET
PRESSURE
TAP
INLET
OUTLET
WIRING
TERMINALS (3)
INLET
PRESSURE
TAP
PRESSURE REGULATOR
ADJUSTMENT
(UNDER CAP SCREW)
PILOT OUTLET
PILOT ADJUSTMENT
(UNDER CAP SCREW)
GAS CONTROL
KNOB
RED
RESET BUTTON
M1639C