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1.13 TORQUE SPECIFICATIONS
Cylinder Head ............................................15 (+ 90° + 90°) ft.lb.
Intake Manifold ................................................................13 ft.lb.
Exhaust Manifold..............................................................13 ft.lb.
1.14 ENGINE OIL RECOMMENDATIONS
The unit has been filled with 5W-20 engine oil at the
factory. Use a high-quality detergent oil classified "For
Service CC, SD, SE, SF ." Detergent oils keep the engine
cleaner and reduce carbon deposits. Use oil having the
following SAE viscosity rating, based on the ambient
temperature range anticipated before the next oil
change:
Temperature
Above 80° F (27° C)
32° to 80° F (-1° to 27° C)
Below 32° F (0° C)
Synthetic oil is highly recommended in any element
with temperatures above 90° F or below 30° F .
Any attempt to crank or start the engine before
!
it has been properly serviced with the recom-
mended oil may result in an engine failure.
1.15 COOLANT RECOMMENDATIONS
Use a mixture of half low silicate ethylene glycol base
anti-freeze and half de-ionized water. Cooling system
capacity is about 12 U.S. quarts (11.4 liters). Use only
de-ionized water and only low silicate anti-freeze. If
desired, add a high quality rust inhibitor to the rec-
ommended coolant mixture. When adding coolant,
always add the recommended 50-50 mixture.
Do not use any chromate base rust inhibitor
!
with ethylene glycol base anti-freeze or chromi-
umhydroxide ("green slime") forms and will
cause overheating. Engines that have been
operated with a chromate base rust inhibitor
must be chemically cleaned before adding eth-
ylene glycol base anti-freeze. Using any high
silicate anti-freeze boosters or additives will
also cause overheating. It is also recommend
that any soluble oil inhibitor is NOT USED for
this equipment.
1.16 BEFORE INSTALLATION
Before installing this equipment, check the ratings of
both the generator and the transfer switch. Read
"Emergency Isolation Method" and "Total Circuit
Isolation Method" in Sections 2.6 and 2.6.
8
Generac
®
Power Systems, Inc.
Section 2 — Installation
Guardian Liquid-cooled 27 kW and 30 kW Generators
Oil Grade (Recommended)
SAE 5W-20
SAE 5W-20
SAE 5W-20
NOTE:
The generator's rated wattage/amperage capacity
must be adequate to handle all electrical loads that
the unit will power. The critical (essential) loads may
need to be grouped together and wired into a sepa-
rate "emergency" distribution panel.
This generator can be installed in conjunction with
an engineered Generac "GTS" type transfer switch, if
necessary.
The standard transfer switch has no sensing or con-
trolling circuit boards. Instead, the generator control
console houses a "Printed Circuit Board Assembly",
which controls all phases of operation, including
engine start up and load transfer.
2.1
STANDBY GENERATOR
INSTALLATION
DANGER
Connecting this generator to an electrical sys-
tem normally supplied by an electric utility
shall be by means of a transfer switch, so as to
isolate the electric system from the utility distri-
bution system when the generator is operating.
Failure to isolate the electric system by these
means will result in damage to the generator
and may also result in injury or death to utility
workers due to backfeed of electrical energy.
If an open bottom is used, the engine-genera-
tor is to be installed over non-combustible
materials and should be located such that com-
bustible materials are not capable of accumu-
lating under the generator set.
Only qualified, competent installation contractors or
electricians thoroughly familiar with applicable
codes, standards and regulations should install this
standby electric power system. The installation must
comply strictly with all codes, standards and regula-
tions pertaining to the installation.
After the system has been installed, do nothing
!
that might render the installation in noncompli-
ance with such codes, standards and regula-
tions.
2.1.1 NFPA STANDARDS
The following published standards booklets pertain-
ing to standby electric systems are available form the
National
Fire
Protection
Batterymarch Park, Quincy, MA 02269:
It is essential to use the latest version of any stan-
dard to ensure correct and current information.
Association
(NFPA),
NOTE:
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