Greenheck SE-1 Manual page 12

Mounting Options
Wall Housing Mounting
Wall housings are the
safest, most efficient and
sturdy platform for mounting
sidewall propeller fans and
their optional accessories.
Wall housings allow for a
wide range of mounting
arrangements to meet
specific applications. It is
constructed of galvanized
steel (painted steel optional) with heavy gauge
mounting flanges and prepunched mounting holes.
Protective guards of welded steel wire completely
protect the drive side of the wall housing. Guards are
coated with Permatector™, a thermal setting polyester
urethane. Other paint finishes are also available.
Wall housing guards that meet OSHA requirements
are also available.
The wall housing is designed to reduce installation time
and provide maximum installation flexibility. Attached
accessories such as backdraft dampers, guards
and weatherhoods may mount to either end. As a
result a wide variety of configurations are available to
accommodate the needs of the system designer.
Note: Wall collar, fan, damper and guards
ship completely factory assembled
except when ordered as a kit .
Weatherhood ships loose .
Wall housing or wall collar should be tipped slightly to
the outside for water drainage.
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Wall Collar Mounting
Wall collars offer an alternate
method for mounting sidewall
propeller fans and the optional
accessories shown here.
Standard construction is of
galvanized steel (painted
steel is optional) with heavy
gauge mounting flanges and
prepunched mounting holes.
Note: Wall collar, fan, damper and guards
ship completely factory assembled
except when ordered as a kit .
Weatherhood ships loose .
Water Ingress and Mitigation
Fans installed to supply air to a building carry the
inherent risk of supplying moisture to the building as
well. Rain, snow, driving wind, and cold temperature
frosting can all contribute to the possibility of unwanted
moisture entering the building.
The amount of water captured is dependent on air
velocity, water droplet size, length of event, wind
strength and wind direction. Because of these variables
some degree of water entrainment can occur. Caution
should be exercised when supplying air with a sidewall
propeller fan.
• Weatherhoods and louvers are recommended to
reduce the likelihood of water entering a building
through the fan opening.
• Installing the fan with a slight slope toward the outside
(1/8 inch per foot less) will minimize water ingress to
the building.
• Air velocities below 500 ft/min reduce the risk of rain
ingress; however snow can be captured at much
lower rates.
• Installation orientation consideration - mounting a fan
on west or south side of a building increases potential
for driving rain/moisture. Consider the north or east
side for supply air fan mounting.
• Consider mounting under an eave with a rain gutter if
fan will be mounted near the roofline.