PH
-SERIES
40
12)
Start heater and take a pressure reading. For natural gas,
manifold pressure should be 3.5 “ W.C.
on high.
For liquefied petroleum gas, manifold pressure should be
10.5” W.C.
on high.
13)
If adjustment is needed, insert a 2mm allen wrench into the adjustment tower and turn clockwise to
lower pressure and counterclockwise to increase pressure.
FINAL STEPS:
14)
Once proper pressure is confirmed, turn off the heater, remove the manometer and use a small flathead
screwdriver to turn screw inside brass fitting clockwise until tight.
DO NOT OVER TIGHTEN.
15)
Replace the black plastic cap on 16) Close the service lid and replace the self-
the adjustment tower. tapping screw that secures the service lid.
