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Honeywell VR8404 Manual page 3

High capacity intermittent pilot combination gas control

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Install Gas Control
1. This gas control can be mounted from 0 to 90 degrees
in any direction from the vertical position of the gas control
knobs.
2. Mount the gas control so gas flow is in the direction
of the arrows on the bottom of the controls.
3. Thread pipe for insertion into the gas control mani-
fold. Do not thread pipe too far. Manifold distortion or
malfunction can result if the pipe is inserted too deeply into
the gas control. Refer to Table 2.
4. Apply a moderate amount of good quality pipe com-
pound (do not use Teflon tape) to pipe only, leaving two
TABLE 2—NPT PIPE THREAD LENGTH IN IN.
Pipe
Thread Pipe
Maximum Depth Pipe Can
Size
This Amount
Be Inserted Into Control
3/4
13/16
1
1-1/16
Fig. 3—Top view of gas control.
INLET
GAS CONTROL KNOBS
Fig. 4—Proper use of wrench on gas control manifold.
3/4
1
INLET
PRESSURE TAPS
OFF
OFF
PILOT ADJUSTMENT (UNDER CAP SCREW)
end threads bare. On LP installations, use compound resis-
tant to LP gas. Refer to Fig. 2.
5. Remove seals over gas control inlet and outlet if
necessary.
6. Connect pipe to gas control inlet and outlet. Use a
wrench on the manifold rather than on the gas control.
Refer to Figs. 3 and 4.
Fig. 2—Use moderate amount of pipe compound.
TWO IMPERFECT
THREADS
GAS CONTROL
PIPE
THREAD PIPE THE AMOUNT
SHOWN IN TABLE FOR
INSERTION INTO GAS CONTROL
WIRING HARNESS
OUTLET
PRESSURE TAPS
ON
OUTLET
ON
PILOT OUTLET
APPLY WRENCH
TO MANIFOLD ONLY
3
APPLY A MODERATE AMOUNT OF
PIPE COMPOUND TO PIPE ONLY
(LEAVE TWO END THREADS BARE).
M8052
M9080
M9367
69-0814—1

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