Installation Guide

Fuel Conversion/Gas Connections
Installation Guidelines for Air-Cooled Generators 25
Figure 5-5. Typical Natural Gas Vapor Installation
Figure 5-6. Typical LP Vapor Installation
NOTE: When sizing a secondary regulator for LP or high pressure natural gas applications be sure to note the
maximum individual load capabilities which will be lower than total capacity. This could impact generator start-
ing performance if sized too small.
NOTE: It is not recommended to reduce the fuel pipe size exiting the secondary regulator unless necessary to
accommodate the ½” or ¾” flexible fuel line that is shipped with the generator. This may potentially cause
starting or performance issues.
Size gas pipe with Pipe Sizing Guide.
BTU and Pressure Decal
Check Distance with Gas Provider
Size Meter for Generator
Load Plus ALL
Appliances Loads
For Underground Installations, Verify
Piping System for Code Compliance
Flex Fuel Line
Safety Shut-off with Pressure Port
NG - BTU = Cubic feet/hour X 1000
Megajoules = Cubic meters/hour X 37.26
Size gas pipe from secondary regulator with Pipe Sizing Guide.
Check Distance with LP Provider
Fuel Tank
Flex Fuel Line
High Pressure Pipe
sized per LP Provider
Check distance with
Regulator Manufacturer
Primary Regulator Per LP Provider
Full Flow Safety Shut-off
with Pressure Port
Size tank Large Enough
to provide required BTUs
for Generator and ALL
Connected Appliance
Loads. Be sure to correct
for Weather Evaporation.
LP - BTU = Cubic feet/hour X 2500
Megajoules = Cubic meters/hour X 93.15
Secondary-vented Regulator
BTU and Pressure Decal