186
GAS SUPPLY
LINE
GAS SUPPLY
LINE
MANUAL GAS
SHUT-OFF VALVE
GROUND JOINT
UNION WITH
BRASS SEAT
TO CONTROLS
PLUGGED
1/8 IN. NPT TEST
GAGE CONNECTION
SEDIMENT
TRAP
3 IN.
MIN.
Fig. 149 — Sediment Trap, Shut-Off Valve, and Union
Fig. 150 — On/Off (1-Stage) Gas Valve
a39-4403
LO
°
ON
C
°
OFF
SECOND STAGE (HI FIRE) MANIFOLD PRESSURE
ADJUSTMENT (3/32 IN. ALLEN KEY)
FIRST STAGE (LO FIRE) MANIFOLD
PRESSURE ADJUSTMENT
ELECTRICAL
CONNECTION
BLOCK
MANUAL SHUT-OFF
CONTROL KNOB
1/8 IN. NPT INLET
PRESSURE TAP
Fig. 151 — 2-Stage Gas Valve
a62-
581
Fig. 152 — Honeywell V8944 Gas Valve
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