Product Manual

General Information
Owner’s Manual for Spark-Ignited Stationary Generators 7
Use of incorrect coolants can damage the engine cooling
system. Use demineralized water or distilled water for
best results. Hard water causes scale deposits, which
reduces cooling efficiency and raises internal tempera-
tures, possibly leading to engine damage. Use an anti-
corrosive to prevent rot in summer and anti-freeze to pre-
vent freezing in winter.
Dilute the anti-freeze based on a theoretical temperature
that is 9–18 °F (5–10 °C) below the lowest temperature
expected in the area. A ratio of 40–60% is most common
range.
NOTE: Use only Peak Fleet-Charge
®
50/50 ethylene
glycol type coolant (available from any IASD).
IMPORTANT NOTE: Do not use propylene glycol
type coolant. Using the wrong coolant, mixing differ-
ent types of coolant, or even mixing different brands
of the correct type of coolant, can produce unsatis-
factory results, possibly leading to engine damage.
Fuel Requirements
This unit may be equipped with one of the following fuel
systems:
• Natural Gas (NG) Fuel System
• Liquid Propane Vapor (LP) fuel system
Recommended fuels must have a BTU content of at least
1,000 BTUs per cubic foot (37.26 megajoules per cubic
meter) for NG, or at least 2,520 BTUs per cubic foot (93.8
megajoules per cubic meter) for LP. If converting to LP
from NG, a minimum LP tank size of 250 gal (946 L) is
recommended. See the installation manual for complete
details and procedures.
Reconfiguring the Fuel System
Some models are created fuel specific for either NG or
LP and are not fuel convertible, and others are factory-
configured for NG, but are field convertible to LP.
To reconfigure the fuel system, navigate to the appropri-
ate menu on the control pad to assign the new fuel type.
Before proceeding, be aware the fuel conversion soft-
ware is password protected.
NOTE: Generac recommends fuel conversion be done
by an IASD or a qualified, competent installation contrac-
tor or electrician who is familiar with applicable codes,
standards, and regulations.
Change Fuel Selection
NOTE: Failure to convert the software will result in
decreased performance and an increase in emissions,
which is a violation of Environmental Protection Agency
(EPA) regulations. It is the responsibility of the installer to
verify only the correct recommended fuel is supplied to
the generator fuel system. Thereafter, the owner/operator
must verify only the correct fuel is supplied.
1. Selecting the correct fuel type occurs during the
Install Wizard Process. Navigate the software
using UP arrow, DOWN arrow, ENTER, and
ESCAPE. See Figure 4-2 for more information.
Battery Requirements
Battery Charger
A 2.5 amp battery charger is integrated into the control
panel module. It operates as a “smart charger” which ver-
ifies output charging levels are safe and continuously
optimized to promote maximum battery life.
Freezing Point °F (°C) -13 (-25) -31 (-35) -58 (-50)
Coolant (% Volume) 40 50 60
Water (% Volume) 60 50 40
(000154)
WARNING
Risk of burns. Do not open coolant system
until engine has completely cooled. Doing so
could result in serious injury.
CAUTION
(000323)
Engine damage. Use approved coolant only.
Failure to do so could result in equipment damage.
Group 27R,
12 volt
4.5L Engine: For areas where tempera-
tures regularly drop below 24 °F (-4 °C).
NOTE: Battery dimensions (L x W x H) for Group 26
battery must not exceed 8-3/16 in x 6-13/16 in x 7-3/4 in
(20.8 cm x 17.3 cm x 19.7 cm).
Group 31R,
12 volt
Upgrade option for 4.5L Engine: For
areas where temperatures regularly drop
below 24 °F (-4 °C).
NOTE: Battery dimensions (L x W x H) for Group 31R
battery must not exceed 13 in x 6-13/16 in x 9-7/16 in
(33 cm x 17.3 cm x 24 cm).