Generac Power Systems 91355 - Manual (Page 4)

GENERAL INFORMATION
PURPOSE AND SCOPE OF MANUAL
These instâllation Instructions have been prepared
especially for the purpose of familiarizing installers
and owners of the applicable equipment with the pro­
duct's installation requirements. Give serious consid­
eration to all information and instructions in the
Manual, both for safety and for continued reliable
operation of the equipment.
Because of the different recreational vehicle models
and the variations between the models, it would be
extremely difficult, if not impractical, to provide
detailed instructions on every installation possibility.
For that reason, instructions and illustrations in this
manual are general in nature. Illustrations are not
intended to serve as detailed installation blueprints. .
The installation should comply strictly with all applica­
ble codes, standards and regulations pertaining to the
installation and use of this product. If any portion of this
manual appears to be in conflict with such codes, stan­
dards or regulations, the applicable codes, standards
or régulations must take precedence over the manual.
SAFETY
Before handling, installing, operating or servicing this
equipment, be sure to read carefully the “Notice to
Installer” and “Safety Rules” at front of this manual;
Comply with all SAFETY RULES to prevent death,
personal injury or damage to equipment and/or prop­
erty. Stress safety to all installers, operators and ser­
vice technicians who work on this equipment.
STANDARDS BOOKLETS
Installation, use and servicing of this equipment
should comply strictly with published standards, as
well as the manufacturer's recommendations. The fol­
lowing standards booklets (latest révision) are avail­
able from the sources indicated;
1. NFPA Standard 501C, “Standard for Recreational
Vehicles", available from the National Fire Protection
Association, Batterymarch Park, Quincy, MA 02269.
2. NFPA 70, “NFPA Handbook of the National Electric
Code", obtained from same address as Item 1.
3. ANSI Cl-1975 and ANSI 119.2-1975, available from the
American National Standards Institute, 1430 Broadway,
New York, NY 10018.
4. ANSI A119.2/NFPA 501C, available from the
Recreational Vehicle Association, 1896 Preston White
Drive, Reston, VA 22090.
5. California Administrative Code, Title 25, available from
the State of California, Documents Section, P.O. Box
1015, North Highlands, CA 95660.
6. CSA Electrical Bulletin 946, available from the Canadian
Standards Association, Housing and Constructions
Materials Section, 178 Rexdale Boulevard, Rexdale,
Ontario, Canada, M9W1R3.
EQUIPMENT DESCRIPTION
Instructions and information in this section pertain to
Generac “NP and “Q” air-cooled generators, more
specifically as listed below. These generators are
designed specifically for installing in recreational vehi­
cles. They operate 120 volts, 1-phase, 60 Hertz, AC
electrical loads.
NOTE; All units, except the Q40G, may be recon­
nected for a dual voltage output of 120/240 volts AC.
Series Power (wattage) Max. Rated Current
at 120V
Q-40G 4200 35.0
Q-55G/LP 5500 45.8
Q-70G/LP 7000 58.3
NP-50G 5000 41.6
NP-50LP 4500 37.5
NP-66G/LP 6600 55
ENGINE GENERATOR
OPERATING SPEED
The generator’s revolving field (rotor) is driven by a 4-
cycle engine through a pulley and drive train arrange­
ment (Figure 1). The generator supplies 120/240
volts AC at 60 Hertz when the rotor is operating at
3600 rpm. The drive train arrangement allows the
engine to operaté at a lower speed than the rotor.
Engine speed is held nearly constant by a mechani­
cal, fixed speed governor as follows;
Series Q-40G........................... 2570 rpm
Series Q-55G/LP ...................... 2570 rpm
Series NP-50G/LP .................... 2570 rpm ,
Series NP-66G/LP .................... 2700 rpm
Series Q-70G/LP...................... .2570 rpm
Figure 1 — Typical Pulley and Drive Train
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