Honeywell VR8305 User Manual page 4

Install Gas Control
1. This gas control can be mounted 0-90 degrees, in any
direction, including vertically, from the upright position of
the gas control knob.
2. Mount the gas control so gas flow is in the direction
of the arrow on the bottom of the control.
Fig. 4—Install sediment trap.
DROP
PIPED
HORIZONTAL
GAS
SUPPLY
GAS
CONTROL
3 IN.
(76 MM)
MINIMUM
2
DROP
HORIZONTAL
TUBING
GAS
1
SUPPLY
GAS
CONTROL
RISER
3 IN.
(76 MM)
MINIMUM
2
1 ALL BENDS IN METALLIC TUBING SHOULD BE SMOOTH.
2 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.
Fig. 6—Proper use of wrench on gas control with and without flanges
WHEN FLANGE IS NOT USED
APPLY WRENCH
FROM TOP OR
BOTTOM OF GAS
CONTROL TO
EITHER SHADED AREA
GAS
CONTROL
RISER
PIPED
GAS
SUPPLY
3 IN.
(76 MM)
MINIMUM
2
M3077
4
3. Thread pipe the amount shown in Table 4 for inser-
tion into the gas control. DO NOT THREAD PIPE TOO
FAR. Valve distortion or malfunction may result if the pipe
is inserted too deeply into the gas control.
TABLE 4—NPT PIPE THREAD LENGTH IN
INCHES.
Pipe Thread Pipe
Size This Amount
3/8 9/16
1/2 3/4
3/4 13/16
4. Apply a moderate amount of good quality pipe
compound (do not use Teflon tape) to pipe only, leaving
two end threads bare. On LP installations, use compound
resistant to LP gas. Refer to Fig. 5.
5. Remove seals over gas control inlet and outlet if
necessary.
Fig. 5—Use moderate amount of pipe compound.
TWO IMPERFECT
THREADS GAS CONTROL
PIPE
THREAD PIPE THE AMOUNT
SHOWN IN TABLE FOR
INSERTION INTO GAS CONTROL
WHEN FLANGE IS USED
APPLY WRENCH
TO FLANGE ONLY
Maximum Depth
Pipe Can Be
Inserted Into
Control
3/8
1/2
3/4
APPLY A MODERATE AMOUNT OF
PIPE COMPOUND TO PIPE ONLY
(LEAVE TWO END THREADS BARE).
M3075B
M3085A