Typical Installation - Greenheck RSF Installation, Operation And Maintenance Manual

Typical Installation

Move the fan to its intended location and fasten it
securely through mounting holes provided in the
fan base. Shims may be necessary depending upon
thickness of the roofing material.
For ducted applications, an optional duct adapter (if
provided) is attached and holds the ductwork in place
prior to installing the unit. The diagram below shows a
typical installation with prefab roof curb and ductwork.
Access to the motor compartment is made by releasing
the fasteners which secure the cover. The cover should
be placed in an area where wind will not blow it off the
roof.
Electrical Connection
The electrical supply must be compatible with the fan
motor with regard to voltage, phase and amperage
capacity. Moreover, the electrical supply line must
be properly fused and conform to local and national
electrical codes.
Electrical lead-in wires should be routed through the
pre-punched hole in the optional duct adapter (if
provided) and the punched hole in the bottom of the fan
housing. Electrical wires must be located so as not to
rub on moving components. The electrical supply line
is connected to an optional safety disconnect switch (if
provided) or wired directly to the motor.
Wiring should be secured inside the fan to prevent
interference with the drive components. All wiring must
conform to local and national codes.
Mounting for Seismic Installation
IMPORTANT
Installation instructions for seismic ratings are only
recommendations. Final design must be determined
by Structural Engineer of Record (SEOR) including
requirements for curb construction, mounting of unit
to curb and mounting of curb to structure.
4 Roof Supply Fan
Recommended
Fan
Size
Curb Size* Roof Opening
90 24-1/2 x 24-1/2 15 x 15
100 28-1/2 x 28-1/2 17 x 17
120 32-1/2 x 32-1/2 21 x 21
150 38-1/2 x 38-1/2 23 x 23
180 44-1/2 x 44-1/2 29 x 29
200 50-1/2 x 50-1/2 33 x 33
All dimensions in inches.
* Recommended curb size shown is outside curb dimension without roofing
and flashing.
Note: In cases where extreme snow depths may be encountered, taller roof
curbs may be required to raise unit or condensation pans may be required
in ductwork.
Fan Size
90, 100, 120
Steel
150
180, 200
90, 100, 200
Concrete
150
180, 200
90, 100, 120
Timber
150
180, 200
All dimensions are in inches.
Prepunched mounting
holes and 2-1/2 in. skirt
to aid in installation.
Ductwork (by others)
Duct adapter (optional)
allows ductwork to
be completed prior to
setting unit on curb.
Roof curb
Duct Size Nominal
ID Damper Size
12 12 x 12
14 14 x 14
18 18 x 18
20 20 x 20
26 26 x 26
30 30 x 30
Fasteners Total
per side Fasteners
3 6
4 8
5 10
3 6
4 8
5 10
3 6
4 8
5 10
®