Installation; Electrical Connection - Greenheck RSF Installation, Operation And Maintenance Manual

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
four latches which secure the cover. The cover should
be placed in an area where wind will not blow it off the
roof.
Typical Installation
Recommended
Fan Size Curb Size*
Roof Opening
24 ⁄ 15
1
2
90
(662) (381)
28 1 ⁄ 17
2
100
(724) (432)
32 1 ⁄ 21
2
120
(826) (533)
38 1 ⁄ 23
2
150
(978) (584)
44 1 ⁄ 29
2
180
(1130) (737)
50 1 ⁄ 33
2
200
(1283) (838)
All dimensions are in inches (millimeters).
* Recommended curb size shown is outside curb dimension without roofing
and flashing.
Note: In cases where extreme snow depths may be encountered, extended
base may be required to raise unit or condensation pans may be required in
ductwork.
4 Roof Supply Fan
Prepunched mounting
holes and 2 1 ⁄ in. skirt
2
to aid in installation.
Ductwork (by others)
Duct adapter (optional)
allows ductwork to
be completed prior to
setting unit on curb.
Roof curb
Nominal
Duct Size ID
Damper Size
12 12 x 12
(305) (305x305)
14 14 x 14
(356) (356x356)
18 18 x 18
(457) (457x457)
20 20 x 20
(508) (508x508)
26 26 x 26
(660) (737x737)
30 30 x 30
(762) (838x838)

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.
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