4
www.PennBarry.com
INSTALLATION
ROOF MOUNTING
The PennBarry FS is a fresh air supply fan. Accordingly, before installation, make sure that the unit is not located next to an exhaust
fan so that dirty or noxious air is not brought back inside the building. Mounting the unit on a roof necessitates prior installation of
the proper height and size roof curb. Curb must be installed securely and sealed carefully to the roof construction. Dampers, when
required, should be installed prior to mounting on the curb.
Dampers must be secured to the inside of the curb without undue twisting which may distort the damper frame. Damper frame
must be reasonably level on all sides. Check for free operation. If dampers are motor operated type, ascertain that proper voltage
is impressed on motor terminals.
POSITIONING AND RUNNING POWER LINES
Power is normally brought from within the building through proper conduit lines and placed inside one corner of the curb. It is
then fed through the clearance hole provided in the damper and, in turn, fed through the fan to the service switch, if furnished. The
number of wires, type of insulation and protection by metal rigid or flexible conduit must be suitable for motor load on line voltage
service.
Some local codes prohibit the connection of in-line, aluminum fans in kitchen hood exhaust systems. According to present NFPA96
interpretation, ANY fan used in such duct work must be made of steel, with liquid-tight welds at all seams and connections. If local
codes are in accordance with NFPA96, do not use ANY FAN that is not completely welded closed for such duty. Refer to PennBarry’s
Fumex and Dynamo products for roof and wall mounted exhausters approved for use on kitchen hood exhaust systems.
NOTE: Care should be taken to follow all local electrical safety and building codes. All electrical parts must be grounded, and grounding
conductor should be checked for continuity.
ANCHORING AND SECURING THE FAN
Units should be seated on a properly sized curb. The gap between the base of the fan and the top of the curb should be sealed with a
neoprene 1” X 1/4” gasket. The gasket should be glued or attached with a pressure-sensitive adhesive. The fan must be firmly secured
to a metal curb with stainless steel or cadmium coated self-tapping screws, 18” on center. Units installed in areas subject to high
winds or unusual field conditions may require additional fastening with guy wires. If the contractor removes the ventilator parts to
facilitate installation and electrical connections, all parts should be reassembled replacing all spacers, washers, nuts, bolts, fasteners
and components exactly as they were found prior to removal. All fasteners are to be drawn tight and secure.