Cooling And Ventilating Air; Lp Gas Fuel System - Generac Power Systems 004701-0 Owner's Manual

DANGER

Fuel lines and exhaust piping must not pen-
etrate into the vehicle living area.
2.3

COOLING AND VENTILATING AIR

It is absolutely essential that an adequate flow of
air for cooling, ventilating and engine combustion
be supplied to the generator set. Without sufficient
airflow, the engine/generator quickly overheats. Such
overheating can cause serious operating difficulties
and also may cause fire and personal injury. The
installer must make sure that sufficient air is avail-
able to the generator for cooling, ventilating and
combustion. The installer also must provide for a
path for exhausting the cooling air to the exterior of a
compartment, if so equipped.
DANGER

Never use discharged cooling air for heating or
permit such air to enter the vehicle interior. This
air contains deadly carbon monoxide gas and
other poisonous, flammable or explosive gases.
2.3.1 GENERATOR AIRFLOW
Engine operation drives cooling fans for the two-stage
cooling air system. A pressure fan draws cooling air
into the bottom right side of the generator (Figure
2.8). This airflow cools the engine/generator and elec-
tronic components. The second part of the cooling
system, a suction fan, draws air that is heated from
a hot engine into a collector compartment at the left
side of the unit. This heated air (although cooler than
exhaust muffler) is then deflected out the bottom
toward the ground.
Figure 2.8 – Airflow Through Engine/Generator
26
Section 2 – Installation
Recreational Vehicle Generator
2.3.2 TESTING THE INSTALLATION
The manufacturer recommends testing the installa-
tion to be sure adequate cooling airflow is available to
the unit before placing the unit into service. If the unit
shows signs of overheating, enlarge the air openings.
Never place a unit into service until absolutely certain
that cooling and ventilation is adequate.
Test the installation, especially if bringing in air
from below the generator set.
2.4

LP GAS FUEL SYSTEM

DANGER

LP gas is highly EXPLOSIVE. The gas is heavier
than air and tends to settle in low areas. Even
the slightest spark can ignite it and cause and
explosion. Only competent, qualified people
should be allowed to install, test, adjust or ser-
vice an LP gas fuel system. Install the optional
fuel system in compliance with applicable codes,
standards and regulations. After the installation,
do not do anything that might render the sys-
tem in noncompliance with applicable codes and
standards.
The LP powered range of generators are fitted with a
nonadjustable, factory set system. These systems are
tamper-proof to meet 1997 California Air Resources
Board requirements for engine emission.
2.4.1 PARTS NOT INCLUDED IN FUEL
SYSTEM
The propane fuel system does NOT include such
items as (a) gas tank, (b) gas piping, (c) fittings, (d)
valves, and (e) primary regulator, used to store the
gaseous fuel and deliver it to the gaseous fuel sole-
noid (Figure 2.9).
DANGER

Use only approved components in the fuel sup-
ply system. All components must be properly
installed in accordance with applicable codes.
Improper installation or use of unauthorized
components may result in fire or an explosion.
Follow approved methods to test the system for
leaks. No leakage is permitted. Do not allow fuel
vapors to enter the vehicle interior.
NOTE: