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ROOF MOUNT
The unit should be supported on beams or pads that are high enough so that water on
the roof cannot rise to the bottom of the unit. If 4"x4" timers are used, be sure that they
are both long enough to support the weight and oriented so as to transfer the weight of
the unit to the roof and the underlying support structure. If attachment to the support
structure is required, the floor or back side of the unit may be field drilled for bolts or
screws. Seal all penetrations with silicone rubber or butyl rubber to avoid water and air
leaks. Place bolts or screws where they will not interfere with filter insertion or removal.
Take care to locate the duct work so that the filter and motor are easily serviced. Locate
and shim the support beams or pads so they equally support the load.
PAD MOUNT
The unit should be supported on beams or pads that are high enough that water cannot
rise to the bottom of the unit and damage the filters or the motor. If 4"x4" timbers are
used be sure that they are both long enough to support the weight and oriented so as to
transfer the weight of the unit to the pad. Take care to place the duct work so that the
filters and motor are easily serviced. Locate and shim the support beams or pads so
they equally support the load.
8
INSTALLATION