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1.2 Location Factors
Ideally, the generator set should be mounted on
concrete at ground level. For above-ground installations,
including roof installations, weight considerations are
especially important.
determine whether the structure can support the weight
of the generator set.
The location of the generator set must:
D
Support the weight of the generator set and related
equipment such as batteries, radiators, and mounting
pad(s). Keep in mind that the mounting pad weight
may exceed the weight of the generator set.
D
Meet applicable fire rating codes and standards.
D
Position the generator set over a noncombustible
surface. Do not allow accumulation of combustible
materials under the generator set.
D
Permit vibration isolation to reduce noise and prevent
damage.
D
Be clean, dry (open units), and not subject to flooding.
D
Allow ventilation with a minimum amount of ductwork.
(open units)
D
Provide clearance for cooling air flow and access for
service. See Section 1.5 for required clearances
around the generator set.
D
Allow safe expulsion of exhaust.
D
Minimize the risk of public or unauthorized access.
1.3 Mounting Surface
The manufacturer recommends a single, level concrete
mounting pad as shown in Figure 1-2. This method
provides maximum stability for the generator set;
however, draining the oil and servicing the generator set
may require raising the set from the pad.
Use an oil drain pump if clearance below the oil drain or
extension is insufficient for a pan large enough to hold all
the engine's oil.
Figure 1-3 shows typical mounting surface details for
sizing the concrete surface beyond the generator set
and allowing for clearances during generator set
service. Refer to the generator set dimension drawings
for conduit and fuel-line placement.
14
Section 1 Location and Mounting
The building engineer must
Figure 1-2 Typical Single-Pad Mounting
1
2
3
3
3
3
1. Engine end
2. Generator set
3. Extend the concrete surface a minimum of 152 mm (6 in.)
beyond the generator set
4. Battery rack
5. Allow at least 457 mm (18 in.) between the generator set
and adjacent walls or other obstructions on all sides for
ease of servicing the generator set
6. Alternator end
7. Mounting pad (concrete surface)
Figure 1-3 Mounting Surface Detail (top view)
1.4 Vibration Isolation
The generator set is equipped with neoprene vibration
isolators. Connections between the generator set or its
mounting base and any conduits, fuel lines, or exhaust
piping must include flexible sections to prevent
breakage and to isolate vibration.
TP-5700-3
4
5
6
TP-5700-3
7
TP-6609 6/08
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