American Standard GRWF130A94A0A Installation Manual page 24

5. Remove the right side panel by removing three
screws on the front and four screws on the back
of the right side panel. See Figure 20.
6. Locate gas valve. See Figure 21.
7. Remove Natural Gas/Liquid Propane cover loca-
ted on the gas valve using a fl at blade screwdri-
ver. See Figure 22.
8. Rotate the dial with the arrow pointing at
Natural Gas to the Liquid Propane setting. See
Figure 22.
9. Replace the Natural Gas/Liquid Propane cover.
18-CG02D1-4
24
Figure 20
Figure 21
IMPORTANT: If either the main inlet or
outlet of the gas valve is disconnected for
any reason, the fl at sealing ring gasket
located between the gas valve and the pipe
must be replaced with a new fl at sealing
ring gasket to ensure a leak-proof seal. New
gaskets are available as replacement parts.
Spares are also shipped with the boiler,
located near the gas valve. See instructions
and illustrations below for re-assembly.
When reconnecting the gas supply pipe or
gas manifold assembly to the valve, use a
new fl at sealing ring gasket between the end
of the pipe and the inlet (or outlet) of the
valve, and engage the nut with the external
threads of the valve to secure the joint. Be
sure the gasket remains in place and care-
fully tighten the nut, hand-tight.Using an
adjustable wrench, further tighten the nut
¼to ½turn (or about 2 fl ats) beyond hand-
tight. Do not over-tighten. Be sure to use
adequate opposing torque with a backing
wrench, in order to prevent displacement of
the gas valve or other piping.Check this and
all joints for leaks according to the startup
andcheckout procedures found elsewhere in
this document before returning the boiler to
service
Figure 21A