Rheem RTGH-C95XLP Use And Care Manual page 59

Leak Testing
WARNING:
Never use an open flame to test for gas leaks, because
death, personal injury, and/or property damage can result.
The water heater and its gas connections MUST be leak-
tested at normal operating pressures before the unit is
placed in operation. These tests should also include all
factory connections.
Pressure Testing the Gas Supply System
WARNING:
If inlet gas pressure is out of allowable range [4.0" w.c.
(1.0kPa) – 10.5" w.c. (2.6kPa)] for Natural Gas, or [8.0"
w.c. (2.0kPa) – 13.0" w.c. (3.2kPa)] for LP gas, a gas
pressure regulator must be installed to maintain the
allowable inlet gas pressure.
INSTALLATION INSTRUCTIONS
• Turn on the gas shut-off valve(s) to the water heater.
• Use a soapy water solution to test for leaks at all
the connections and fittings. If bubbles are seen,it
indicates a gas leak that must be corrected.
• Contact a qualified service technician.
The water heater and its manual gas shut-off valve
must be disconnected from the gas supply piping
system during any pressure testing of the system at
test pressures in excess of 1/2 psi (3.5 kPa).
The water heater must be isolated from the gas supply
piping system by closing the manual gas shut-off valve
during any pressure testing of the gas supply piping
system at test pressures equal to or less than 1/2 psi
(3.5 kPa).
59