Install Manual
Table Of Contents
- Table of Contents
- 1. Important Safety Instructions
- 1.1 Warning, Caution, and Note Styles Used in This Manual
- 1.2 General Information
- 1.3 General Precautions
- 1.4 Generator Set Voltage Is Deadly
- 1.5 Engine Exhaust Is Deadly
- 1.6 Fuel and Fumes Are Flammable
- 1.7 Batteries Can Explode
- 1.8 Moving Parts Can Cause Severe Personal Injury or Death
- 1.9 The Hazards of Carbon Monoxide
- 2. Introduction
- 3. Pre-Installation Considerations
- 4. Installation
- 5. Startup and Configuration
- Appendix A. Fuel Line Selection
- Appendix B. Outline and System Drawings
- Appendix C. Seismic Requirements
4. Installation 2-2016
32 A045R241 (Issue 7)Copyright © 2016 Cummins Inc.
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 is set at 6 - 12 inch water column (1.5 - 3.0 kPa) for all
operating loads (no load to full load). (The maximum pressure under any
condition is 13 inch water column [3.2 kPa].) Refer to 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.
NOTICE
NFPA Standard No. 58 requires all persons handling and operating propane
to be trained in proper handling and operating procedures.
The required components in a propane vapor fuel system are as follows:
Component Description
Propane Tank Make sure to identify and utilize the correct tank size based on fuel flow
requirements and the lowest average temperature for your region. If the
tank is sized incorrectly, the generator set could run out of fuel. Refer to
the Minimum LPG Tank Size figure in the Fuel Line Selection appendix.
Shutoff Valve Useful during installation or in the event of a leak (may be required to
meet local codes).
Primary Regulator Located at the tank outlet, the primary regulator reduces the tank
pressure to the working pressure in the fuel supply line. Primary and
secondary regulators must be properly matched for a safe and functional
system. Consult with your propane supplier to ensure that the regulators
are properly sized.