Product Manual A

4. Installation7-2018
35A045R241 (Issue 13) Copyright © 2018 Cummins Inc.
No. Description No. Description
1 Shutoff Valve 3 Meter
2 Flexible Fuel Line (Attached to
Radiator Guard)
4 Secondary Regulator
FIGURE 6. TYPICAL NATURAL GAS INSTALLATION
Natural Gas Supply Line Size
The natural gas supply meter may need to be exchanged for a higher capacity
meter to supply the additional gas consumed by the generator set.
Use the total load requirement of the generator set to determine the size of
the fuel supply pipe. Use the tables and charts in the Fuel Line Selection
appendix to determine the correct pipe size.
An older site might require upgrading and repair of the gas supply system.
Schedule an upgrade or repair to minimize power and gas supply
interruptions.
Make sure the full load fuel supply pressure at the inlet to the generator fuel
shutoff valves matches the requirements in the Model Specifications section.
Propane Fuel System
Propane vapor can be used as a primary fuel source or as a backup fuel source for
the generator sets with two independent fuel sources connected to the generator
set.
WARNING
Fuel leaks can lead to explosive accumulations of gas. Propane sinks in air
and can accumulate inside housings, basements, and other below-grade
spaces. Prevent gas leaks and the accumulation of gaseous fuel in the event
of a leak.