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PowerTech PTRV-17.5KT Manual

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GENERATOR ENCLOSURES
Some installations require the Genset to be mounted inside an enclosure. Enclosures are
generally constructed of heavy gauge sheet metal, and completely insulated. Enclosures are
typically installed in RV’s with large unobstructed compartments. The major advantage to
installing a Genset in an enclosure is to achieve a significant reduction in the unit’s sound level.
In order to maintain the ambient temperature within the enclosure a forced cool air
system is generally employed. Two blower fans capable of producing a minimum of 465 CFM
each should be mounted at the generator end of the enclosure. Cooling air circulates around the
generator end and engine, forcing excess heat to exit through an air duct outlet to the outside air.
Since hot air will rise the air duct outlet opening should be located near the inside top surface of
the enclosure, the opening should be approximately 25 square inches.
Openings in the base of the enclosure and compartment floor are required for the engine
exhaust pipe, oil drain hose and engine breather hose. Other holes for fuel lines, electrical leads,
remote radiator hoses, etc. are usually located in the rear wall of the enclosure. Be sure to seal
around these items to prevent fumes or vapors from entering the vehicles compartment. Two
hinged doors at the front of the enclosure enable unobstructed access to the engine and control
box for routine maintenance. A removable service panel in the rear wall of the enclosure
facilitates servicing the back side of the Genset.
The clearance between the enclosure and the vehicles compartment walls is another
consideration. Except for the rear wall of the enclosure the clearances at the top, sides and front
can be minimal. A ½” gap per side is enough clearance for easy installation or removal. At the
rear of the enclosure the compartment depth must be large enough to accommodate the two
blower fans and system connections. A minimum of 10” between the enclosure and rear
compartment wall is required for this area. Also, remember a 400 sq. inch free air opening is
required to supply the forced air cooling system. See section on “Air Requirements” for details.
Dimensions and layouts are provided for your planned installation, be sure to follow all
requirements. Power Technology’s Customer Service Department is available to answer any
questions you may have concerning your Genset and installation.
IMPORTANT: When installing a RV generator set the installation must comply with the
current Safety Standards of ANSI / RVIA EGS-1-2003, ANSI A 119.2 / NFPA 501C and
applicable articles of ANSI / NFPA 70 of the National Electrical Code. Generator set
installations must also comply with state and local requirements.
IMPORTANT: An enclosure manufactured by any person (s) other then Power Technology
must follow the requirements set forth in this manual. All specifications must be adhered to;
failure to do so may affect your Power Technology Southeast, Inc. Limited Warranty.
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