Generac Power Systems 009600-4 - Manual (Page 24)

INSTALLATION Section 6 - Installation
PRIMEPACT 66C and 66LP Recreational Vehicle Generators
Figure 5.3 - Connection for 120/240 Volts
• The AC connection system on all air-cooled
PRIMEPACT series generators uses a GROUNDED
neutral.
• A separate green ground wire is connected to the
recreational vehicle’s junction box.
• Loads connected across T1 (Red) to T2 (White), and
T3 (Black) to T2 (White), must not exceed 27.5 amps
for PrimePacl 66G, or 25.8 amps for PrimePact 66LP
with a voltage of 120V across each set of terminals.
NOTE:
Do NOT connect loads in excess of eircuit
breaker ratings.
6.1 LOCATION AND SUPPORT
• 6.1.1 GENERATOR LOCATION * •
The most desirable location for the generator set is
between the vehicle's main frame members. However,
this is seldom possible. Most units must be installed on
the side of the vehicle and are difficult to reinforce.
Many recreational vehicles have been factory equipped
with an area for the generator set. Some vehicles may
even have a generator compartment provided by the
vehicle manufacturer.
Plan the generator location based on the following:
• The generator set must be installed on a framework
that is part of the recreational vehicle, as outlined in
Section 6.1.2.
• The location must provide an access opening that is
large enough to permit generator removal (unless the
generator is to be removed from underneath the sup­
porting framework).
• The location must provide easy access to frequently
serviced components, such as filters, oil drains,
spark plugs and other common maintenance parts.
• The location must provide sufficient room to allow
minimum clearances as outlined in Section 6.2. If
sound insulation is to be used on the compartment
walls and ceiling, the minimum recommended
applies to the space between the generator and such
insulation.
• The location must provide adequate cooling and ven­
tilating airflow for the generator without a great deal
of work and expense.
• 6.1.2 GENERATOR SUPPORT __________________
The generator must be securely attached to a metal
framework that has been made part of the vehicle frame
structure by bolting or welding. The metal framework
on which the generator will rest and which will restrain
the generator set should consist of at least two horizon­
tal beams. These beams should consist of (a) 1-1/2-inch
square, 11 -gauge steel tubing OR (b) 1-1/2-inch, 11-
gauge angle iron. A typical supporting frame with hori­
zontal support tubing, is shown in Figure 6.1.
The generator can be installed so that it sits on top of
the horizontal support tubing if the vehicle design per­
mits. Another method is to suspend the generator below
the horizontal support tubing by means of suitable,
structurally sound metal framework The following gen­
eral rules apply:
• Vehicle construction MUST be capable of supporting
the weight of the generator.
• Whether the generator is mounted above the horizon­
tal support tubing or suspended below the tubing, the
supporting frame used must be structurally sound.
• If the generator cannot be bolted directly to
the supporting frame or support tubing, consider
using additional tubing, angle brackets
or other supports to give the supporting frame suffi­
cient strength.
Figure 6.1 - Typical Horizontal Support Frame
♦ 6.1.3 SUSPENDED MOUNTING _____________________
If you are going to suspend the generator below the hor­
izontal support tubing, the suspension method you use
with the vehicle frame members must (a) be able to sup­
port the weight of the generator AND (b) provide suffi­
cient restraint for the generator. One typical suspended
mounting system is shown in Figure 6.2. The location of
a
suspended mounting system must be carefully
planned, keeping the following general rules in mind:
22 Generac® Power Systems, Inc.