Section 1 - General Information; Introduction; Equipment Description; Unpacking The Box - Generac Power Systems Generator Technical Manual

1.1

INTRODUCTION

This manual has been prepared especially for the
purpose of familiarizing personnel with the design,
application, installation, and operation of the appli-
cable equipment. Read the manual carefully and
comply with all instructions. This will help to prevent
accidents or damage to equipment that might other-
wise be caused by carelessness, incorrect applica-
tion, or improper procedures.
Every effort has been expended to make sure that the
contents of this manual are both accurate and cur-
rent. The manufacturer, however, reserves the right
to change, alter or otherwise improve the product at
anytime without prior notice.
1.2

EQUIPMENT DESCRIPTION

The PowerMaster assembly is used to automatically
disconnect selected loads from the generator output
when a high demand appliance, such as a central air
conditioning system, is started, easing the burden on
the generator. The selected loads will then be auto-
matically reconnected to the generator output once
the high demand appliance is turned off. The selected
loads will only be disconnected if the transfer switch
is in the generator position when the high demand
appliance is started.
A total of up to two 240V, 30Amp loads can be con-
nected to the system, and be controlled by a total of
up to two 24Vac control signals from various high
demand appliances.
Once installation is completed, the PowerMaster
assembly will operate automatically without any need
for user intervention or routine maintenance.
1.3

UNPACKING THE BOX

Carefully unpack the box and check for any damage
that may have occurred during shipping. Check to
make certain all the following items are included:
Qty. Part No.
1 0F9110
1 0G0734
2 084464
4 027770
4 043182
4 059051
4 079679
4
Section 1 — General Information
PowerMaster Technical Manual
Description
PowerMaster assembly
Manual, installation and
operating instructions
Auxiliary contact switches
Screws for mounting the
auxiliary contact switches
Washers for mounting the
auxiliary contact switches
Lug, Ring, #8 screw, 10-
12AWG
Lug, Fast-on, 3/16 inch, 18-
22AWG
1.4

ENCLOSURE DETAILS

The enclosure is a National Electrical Manufacturer's
Association (NEMA) 1 type. NEMA 1 type enclosures
are suitable only for indoor mounting.
2.1

INTRODUCTION TO INSTALLATION

This equipment has been wired and tested at the fac-
tory.
Installing this assembly includes the following pro-
cedures:
•

Mounting the enclosure

• Connecting the source voltage(s) and load(s)
• Connecting the control circuit(s)
• Installing the Auxiliary switches to the transfer
switch
• Connecting the Auxiliary switches
• Restoring all power supplies
• Testing the PowerMaster operation
2.2 MOUNTING THE ENCLOSURE
Mounting dimensions for the enclosure are shown in
figure 1.
The enclosure should be wall mounted in an indoor
location only, preferably near the circuit breaker
load center. Mount the assembly vertically to a rigid
supporting structure. To prevent distortion, level all
mounting points. If necessary, use washers behind
the mounting holes to level the assembly.
Figure 1 — Mounting Dimensions
25.4
22
254 210
228.6
177.8