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PAGE 16 — INDUSTRIAL GENERATOR SETS — APPLICATION & INSTALLATION MANUAL — REV. #4 (09/07/07)
INSTALLATION OVERVIEW
Cold Climates and Derating Factors
Extreme temperature and high elevation effect the efficiency
of the engine-generator set. Always take into account
derating factors of climate and elevation when sizing a
generator set.
Use Premium No.1-D Grade diesel fuel when the ambient
temperature is below freezing. Fuel heating may be required
to prevent fuel filters from clogging when temperatures fall
below the cloud point of the fuel at approximately 20°F
(-6°C) for No. 2-D and -15°F (-26°C) for No. 1-D.
Location
Location of the generator set will determine the cost
effectiveness of an installation. The generator set can be
located inside a building or outside the building with a shelter
or weather-protective housing. The location will help
determine the layout of the fuel tanks, louvers, ventilation
ducts, accessories, etc. Consider the following when
deciding where to locate the generator set:
Safety considerations
Noise. See pages 27 thru 32 for environmental
considerations.
Ambient temperature
Mounting
Fuel, exhaust, ventilation, and cooling systems
Location of the distribution switchboard and transfer
switch
Branch circuits for coolant heaters, battery charger, etc.
Security from flooding, fire, icing, and vandalism
Containment of accidentally spilled or leaked fuel or
engine fluids
Outdoor Locations
Airborne noise. Locate and/or route engine exhaust
piping away from nearby windows & doorways.
Outdoor enclosures. Give consideration to type of
outdoor housing, including weather-protective and/or
sound attenuated types.
Security. Consider use of security fences and site
barriers.
Property line distances. Ensure before proceeding with
final installation plans you are aware of your property
lines.
Engine exhaust. Engine exhaust must be routed away
from building intake vents, windows, doorways and other
openings.
Indoor Locations
Dedication of room for the generator sets only. For
emergency power systems, codes may require the
generator room be dedicated for that purpose only. Also
consider the effect of the large ventilation air flows would
have on other equipment in the same room.
Fire rating of the room construction. Most codes specify
a 1 or 2 hour rating. Check with the local fire authority
for code guidelines.
Working space. Working space around electrical
equipment is usually specified by code. There should
be at least four feet (1200 mm) of clearance around
each generator set. The generator should be accessible
for service without removing the set or any accessories.
Type of cooling system. A factory-mounted radiator is
recommended.
Ventilation. Large volumes of air flow are involved. Room
ventilation fans might be required for a heat exchanger
or remote radiator configurations.
Engine exhaust. The engine exhaust outlet should be
as high as practical on the downwind side of the building
and away from vents and building openings.
Fuel storage and piping. Codes may restrict fuel storage
inside buildings. It is important to consider a safe method
for refueling the fuel tank. Check with the local fire
authority for code guidelines.
Mounting - Ensure generator is located (mounted) over
non-combustible materials and is situated in such a
manner as to prevent combustible materials from
accumulating under the generator.