Generac Power Systems PowerPact G0065201 Installation Manuallines page 17

Based on this testing and the requirements of NFPA 37,
Sec 4.1.4, the guidelines for installation of the generators
listed above are changed to 18 in (457 mm) from the
back side of the generator to a stationary wall or building.
For adequate maintenance and airflow clearance, the
area above the generator should be at least 5 ft (1.52 m)
with a minimum of 3 ft (0.91 m) at the front and ends of
the enclosure. This would include trees, shrubs and
bushes. Vegetation not in compliance with these
clearance parameters could obstruct air flow. In addition,
exhaust fumes from the generator could inhibit plant
growth. See Figure 3-1
within the Owner's Manual for details.
DANGER
Asphyxiation. Running engines produce
carbon monoxide, a colorless, odorless,
poisonous gas. Carbon monoxide, if not
avoided, will result in death or serious injury.
DANGER
Automatic start-up. Disconnect utility power and
render unit inoperable before working on unit.
Failure to do so will result in death or serious injury.
If the generator is not set to the OFF mode, it can crank
and start as soon as the battery cables are connected. If
the utility power supply is not turned off, sparking can
occur at the battery posts and cause an explosion.
Site Preparation
• Locate the mounting area as close as possible to
the transfer switch and fuel supply.
• Leave adequate room around the area for service
access (check local code), and place high enough
to keep rising water from reaching the generator.
• Choose an open space that will provide adequate
and unobstructed airflow.
•
Place the unit so air vents won't become clogged
with leaves, grass, snow or debris. Make sure
exhaust fumes will not enter the building through
eaves, windows, ventilation fans or other air
intakes (see Site Selection).
• Select the type of base, such as but not limited to
gravel or concrete, as desired or as required by
local laws or codes. Verify your local requirements
before selecting.
Material Sufficient for Level Installation
• Dig a rectangular area approximately 5 in (127
mm) deep [A] and about 6 in (152 mm) longer and
wider [B] than the footprint of the generator. Fill
Installation Guidelines for 50 Hz PowerPact™
and the installation drawing
(000103)
(000191)
Site Selection and Preparation
with 4 in (102 mm) of pea gravel [C], crushed stone
or any other non-combustible material sufficient for
level installation. Compact and level the material. A
concrete pad can be poured if desired or required.
The pad should be 4–5 in (102–127 mm) thick and
extend 6 in (152 mm) beyond the outside of the
generator in all directions.
B
A C
Figure 3-3. Compacted Gravel Pad
NOTE: If a concrete pad is required, follow all applicable
Federal, State or local codes.
Figure 3-4. Poured or Pre-formed Concrete Pad
001184
000611a
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