Rheem Generator Systems Portable Generator User Manual


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20
The Gaseous Fuel System
The information below is provided to assist gaseous fuel
system technicians in planning installations. In no way
should this information be interpreted to conflict with
applicable fuel gas codes. Consult with your local fuel
supplier or Fire Marshall if questions or problems arise.
TO THE INSTALLER: Consult with the generator owner(s)
and convey any technical considerations that might
affect their installation plans before applying these
general guidelines.
The following general rules apply to gaseous fuel
system piping:
 t 5IFQJQJOHTIPVMECFPGBNBUFSJBMUIBUDPOGPSNTUP
federal and local codes, rigidly mounted and protected
against vibration.
t 1JQJOH TIPVMECFQSPUFDUFEGSPNQIZTJDBMEBNBHF
where it passes through flower beds, shrub beds, and
other cultivated areas where damage could occur.
t *OTUBMMUIFGMFYJCMFTUFFMGVFMMJOFB) (supplied) between
the generator fuel inlet port (A) and rigid piping to
prevent thermal expansion or contraction from causing
excessive stress on the piping material.
 t "VOJPOC) or flanged connection shall be provided
downstream to permit removal of controls.
 t "NBOPNFUFSQPSUTIPVMECFQSPWJEFED). When
the initial test runs are completed, the manometer
is removed and the port is plugged. The manometer
port permits temporary installation of a manometer
to ensure that the engine receives the correct fuel
pressure to operate efficiently throughout its
operating range.
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occur, piping should be protected against freezing. The
termination of hard piping should include a sediment
trap (F) where condensate is not likely to freeze.
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valve (E) shall be installed in the fuel supply line within
6 ft. (180 cm) of the generator.
t "NBOVBMGVFMTIVUPGGWBMWFMPDBUFEJOUIFJOUFSJPSPG
the building.
t 8IFSFMPDBMDPOEJUJPOTJODMVEFFBSUIRVBLF
tornado, unstable ground, or flood hazards, special
consideration shall be given to increase strength and
flexibility of piping supports and connections.
t 1JQJOH NVTUCFJGUIFDPSSFDUTJ[FUPNBJOUBJOUIF
required supply pressures and volume flow under
varying generator load conditions with all gas
appliances connected to the fuel system turned on
and operating.
 t 6TFBQJQFTFBMBOUPSKPJOUDPNQPVOEBQQSPWFEGPS
use with NG/LPG on all threaded fittings to reduce the
possibility of leakage.
t *OTUBMMFEQJQJOHNVTUCFQSPQFSMZQVSHFEBOEMFBL
tested, in accordance with applicable codes
and standards.
WARNING Propane and Natural Gas are extremely
flammable and explosive, which could cause
burns, fire or explosion resulting in death,
serious injury and/or property damage.
t LP gas is heavier than air and will settle in low areas.
t Natural gas is lighter than air and will collect in high
areas.
t The slightest spark could ignite these fuels and cause an
explosion.
t DO NOT light a cigarette or smoke.
WARNING Propane and Natural Gas are extremely
flammable and explosive, which could cause
burns, fire or explosion resulting in death,
serious injury and/or property damage.
t Before placing the generator into service, the fuel system
lines must be properly purged and leak tested.
t No leakage is permitted.
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ub beds, andub beds, and
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