Onan DJA Series User Manual

INSTALLATION
GENERAL
Plan the installation carefully to insure maximum oper-
ating efficiency. Use this manual as a general guide.
Recommendations in this manual are based on extensive
tests under favorable operating conditions. Abide by
pertinent local codes regulating installation and opera-
tion of internal combustion engines.
LOCATION
Engine location is determined chiefly by the intended
application. Provide adequate access for service and
repair. Protect the engine from adverse weather. Con-
sider the location of related systems, such as fuel,
exhaust, and ventilation.
MOUNTING
Secure the engine to a rigid, level foundation. Founda-
tions must be sturdy enough to withstand distortion and
retain alignment with complementary equipment.
If necessary to exceed 23-degree tilt angle, consult
the factory. Compensate for any tilt when checking
crankcase oil.
VENTILATION
Ventilation is needed to cool the engine and support
combustion. Avoid recirculation of ventilating air. See
Specifications Section for air flow requirements and
vent sizes.
Locate vents so air flow from the inlet to the outlet
will pass over the.engine. The outlet should be slightly
higher than the inlet.
SINGLE THIMBLE DIAMETER 12"
LARGER OR DOUBLE
'•^VENTILATED THIMBLE
DIAMETER 6
,
• LARGER
THAN EXHAUST LINE
HOLES IN END
INNER SLEEVE
EXHAUST LINE PASSING THROUGH
|l WAU 01 PAIT IT ION
IF EXHAUST LINE MUST BE PITCHED
UPWARD CONSTRUCT A TRAP OF PIPE
FITTINGS AT POINT OF RISE
AVOID SHARP BENDS
I UP
[DRAIN CONDENSATION TRAP
PERIODICALLY
FIGURE 3. EXHAUST
Protect walls and partitions through which exhaust
pipes pass with a metal shield (Figure 3).
Install a suitable muffler preferably as close to the
engine as practicable. Pitch exhaust pipes downward,
or provide a condensation trap at point where a rise in
the exhaust system begins.
An optional air shutter may be used in the outlet duct
to control engine temperature by regulating air flow . Air
shutters also prevent back flow of cold air during
engine shutdown.
When ventiducts are used between the engine and outlet
vent, use a canvas section to restrict vibration.
EXHAUST
WARNING
I
Pipe gas outside any
Exhaust gas is poisonous.
enclosure.
Exhaust pipes must not terminate near inlet vents.
Avoid sharp bends by installing sweeping, large radius
elbows. Use flexible seamless section tubing between
the engine and any rigid pipe to restrict vibration.
Increase the exhaust pipe one size for each additional
10-foot length.
FUEL TANK AND LINES
Install the fuel tank so that the vertical distance from
bottom of the tank to the fuel pump does not exceed
six feet. Auxiliary fuel pumps are available which
provide an additional eight-foot fuel lift.
Avoid gravity feed of fuel to the engine. Provide a
siphon break if tank is above pump. When sharing a
fuel tank, do not connect to an existing line at a point
above the fuel supply level.
These diesel engines require a fuel supply line and a
separate return line. Install the fuel supply line from
tank to the 1/8-inch pipe inlet in the fuel pump. Con-
nect the fuel return line to the fitting (7/16 - 24 size)
on the injection pump (Figure 4) to the top of the fuel
supply tank. Use approved flexible, fuel lines at the
engine to absorb vibration. Be sure there are no air
leaks in the suction line.

Onan DJA Series Specifications

General

Brand	Onan
Model	DJA Series
Category	Engine
Language	English