Greenheck ERCH-20 Installation, Operation And Maintenance Manual page 75

Install the Fan
1. For best
performance,
choose a location
with the shortest
possible duct run
and minimum
number of elbows.
Do not mount near
cooking equipment, as
shown in Fig. 1.
2. Attach adjustable
mounting brackets
to fan, but leave the
screws loose until
proper height is
determined, shown
in Fig. 2. Cut hole to
dimensions shown
in table below:
Ceiling Openings
Sizes
SP-A50, A70, A90
SP-A110, A125, A190
SP-A200, A250, A290, A390
SP-A700
SP-A410, A510, A710, A780
SP-A900, A1050, A1410,
A1550
SP-B 50 - 200
NOTE
Model SP-A 50-90 are standard with a round duct.
Should Model SP-A 110-190 require a round duct,
Model RDC (Round Duct Connector) may be ordered
from Greenheck for field installation
Wire the Fan
1. If installed, remove
wiring cover. If fan/light
combination is being
used, make sure the
fan plug is connected
to the fan receptacle
and the light plug is
connected to the light
receptacle, shown in
Fig. 6. Using proper
wire connectors, wire the fan as shown in Fig. 7a.
For wiring of light proceed to Fig. 7b.
2. Push all wiring into the unit's cover and replace
wiring cover.
®
Do not install
fan in this area
45° 45°
Fig. 1
Brackets can be
used in either
position to adapt to
most mounting
situations
Bottom Mount
Bottom Mount
Top Mount
Fig. 2
Fan or Fan/Light Fan/CRD
10 7 ⁄ x 13 3 ⁄ 11 1 ⁄ x 13
8 8 8
12 1 ⁄ x 14 1 ⁄ 12 1 ⁄ x 14
8 4 4
23 3 ⁄ x 11 3 ⁄ 24 1 ⁄ x 12
4 4 8
14 3 ⁄ x 18 3 ⁄ 14 7 ⁄ x 18
4 8 8
14 3 ⁄ x 24 14 7 ⁄ x 24
4 8
14 1 ⁄ x 11 3 ⁄ 14 3 ⁄ x 12
8 4 8
.
Fan
Light
Fan Outlet (top)
Light Outlet (bottom)
Fig. 6
For Frame Construction:
Position unit between
joists. Position brackets
such that bottom
edge of housing will
be flush with finished
ceiling, and tighten the
adjustable mounting
brackets, shown in
Fig. 3.
For Hanging
Installations:
Use Greenheck's
optional vibration
isolator kit Part Number
VI Kit. Using the fan's
standard adjustable
mounting brackets and
10 by 32 threaded rod
(by others), hang unit as
shown in Fig. 4.
3. Installation of ductwork
is critical to the performance
of the fan, shown in Fig. 5.
Straight ductwork (1) or
7 ⁄
16
ductwork that turns in
3 ⁄
8 the same direction as the
1 ⁄
wheel (2) is recommended.
4
Ductwork turning opposite
7 ⁄
16
the wheel direction (3) will
1 ⁄
8
cause turbulence and back
1 ⁄ pressure resulting in poor
4
performance.
4. Slide ductwork over the fan's discharge collar and
securely attach it with sheet metal screws.
Make sure the screws do not interfere with damper
operation. Check damper to make sure it opens freely.
Fig. 7a
115 & 277 Volt
Black wire is "Hot"
White wire is "Neutral"
Green wire is "Ground"
Fig. 4
Fig. 5
Fig. 7b
220 - 240 Volt
Black wire is "Hot"
White wire is "Hot"
Green wire is "Neutral/Ground"
Ceiling Exhaust and Inline Fans
Slots in the
brackets
allow fine
adjustment
for flush
fit with
wall/ceiling
opening
Fig. 3
3
(POOR)
5