Onan DJA Series User Manual

INSTALLATION
GENERAL
Plan the installation carefully to insure maximum operating
efficiency. Use this manual as a general guide. Recom-
mendations in this manual are based on extensive tests
under favorable operating conditions. Abide by pertinent
local codes regulating installation and operation of intemal
combustion engines.
LOCATION
Engine location is determined chiefly by the intended
appUcation. Provide adequate access for service and repair.
Protect the engine from adverse weather. Consider the.
location of related systems, such as fuel, exhaust and
ventilation.
MOUNTING
Secure the engine to a rigid, level foundation. Foundations
must be sturdy enough to withstand distortion and retain
alignment with complementary equipment.
If necessaiy to exceed 23° tilt angle, consult the factory.
Compensate for any tilt when checking crankcase oil.
VENTILATION
Ventilation is needed to cool the engine and support com-
bustion. Avoid recirculation of ventilating air. See Specifi-
cations 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.
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
shut-down.
When ventiducts are used between the engine and outlet
vent, use a canvas section to restrict vibration.
EXHAUST
Pipe exhaust gas outside any enclosure - Exhaust Gas is
Poisonous. Exhaust pipes must not terminate near inlet
vents. Avoid sharp bends by installing sweeping, large
SINGLE THIMBLE DIAMETER 12"
LARGER OR DOUBLE
VENTILATED THIMBLE
DIAMETER 6" LARGER
THAN EXHAUST LINE
HOLES IN END
INNER SLEEVE
EXHAUST LINE PASSING THROUGH
[I WALL OR PARTITION
IF EXHAUST LINE MUST BE PITCHED
UPWARD CONSTRUCT A TRAP OF PIPE
FITTINGS AT POINT OF RISE
AVOID SHARP BENDS
1
^ DRAIN CONDENSATION TRAP
PERIODICALLY
FIG. 1-1
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' length.
Protect walls and partitions through which exhaust pipes
pass with a metal shield, Fig. 1-1.
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.
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 6'.
Auxiliary fuel pumps are available which provide an addi-
tional 8' 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" pipe inlet in the fuel pump. Connect fuel retum
line to the fitting (7/16-24 size) on the injection pump (Fig.
1-2) 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