Installation - Onan DYC Series Operator's Manual And Parts Catalog

INSTALLATION
GENERAL
Installations must be considered individually. Use
these instructions as a general guide. All installations
must meet regulations of state and local building
codes, fire ordinances, etc., which may affect installa-
tion details. See Figure 6. Refer to ONAN Technical
Bulletin T-030 for further installation information.
Requirements to be considered prior to installation:
1. Level mounting surface.
2. Adequate cooling air.
3. Adequate fresh induction air.
4. Discharge of circulated air.
5. Discharge of exhaus.t gases.
6. Electrical connections.
7. Fuel installation.
8. Water supply (city water coolintj).
9. Accessibility for operation and servicing.
10. Vibration isolation.
11. Noise levels.
VENTILATION
Generator sets create considerable heat which must
be removed by proper ventilation. Outdoor in-
stallations rely on natural air circulation but indoor
installations need properly sized and positioned vents
for the required air flow. See SPECIFICATIONS for
the air required to operate with rated load under
normal conditions at 1800 r/min.
Radiator set cooling air travels from the rear of the set
and is removed by a pusher fan which blows out
through the radiator. Locate the air inlet to the rear of
the set.
Locate the cooling air outlet directly in front of the
radiator and as close as possible. The opening free
area must be at least as large as the radiator area.
Length and shape of the air outlet duct should offer
minimum restriction to air flow. Use a duct of canvas
or sheet metal between the radiatorand the airoutlet
opening. The duct prevents recirculation of heated
air.
LOCATION
Provide a location that is protected from the weather
and is dry, clean, dust free and well ventilated. If
practical, install inside a heated building for protec-
tion from extreme weather conditions.
For operation outside a building, a shelter housing
with electrically operated louvres is available as an
option. Transformers connected across the generator
output supply current to the motors.
MOUNTING
Generator, sets are mounted on a rigid skid base
which provides proper support. The engine-
generator assembly is isolated from the skid base by
rubber mounts which provide adequate vibration
isolation for normal installations. For installations
where vibration control is critical, install additional
spring-type isolators between skid base and founda-
tion.
For convenience in general servicing and changing
crankcase oil, mount set on raised pedestal at leasts-
inches (150 mm) high.
When the generator is operating, current in the
transformers actuate the motors and open the
louvres. The louvres are held open for the duration of
the set operation, then are closed by return springs
when the set is shut down.
City Water cooled sets do not use the conventional
radiator. A constantly changing waterflow cools the
engine. Sufficient air movement and fresh air must be
availableto properly cool thegenerator, disperse heat
convected off the engine and support combustion in
the engine.
Installations require an auxiliary fan (connected to
operate only when the unit is running) of sufficient
size to assure proper aircirculation and evacuation of
fumes.
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