INST
ALLA
TION,
USE & CARE INSTR
UCTIONS
INST
ALLA
TION
6
INSTALL THE WALL SWITCHES
CAUTION
Only use included switches . Only use wires suitable
for at least 90°C (194°F) .
1 . Unpack the wall switches from the box . Using pliers,
remove the small tab on the double rocker switch (circled
in FIG . 2) .
2 . Install both rocker switches at a convenient place for the
user . Use one 14/3 cable and one 14/2 cable to wire the
switch box to the powerpack insert (FIG . 3) .
HD1421
REMOVE
FIG. 2
Motor
speed selection
switch
NO. 2
14/2 CABLE TO
POWERPACK
INSERT
HE0448A
WHITE
BLACK
GROUND
On/Off
light switch
On/Off
motor switch
NO. 1
14/3 CABLE TO
POWERPACK
INSERT
WHITE
COM
RED
FIG. 3
INSTALL THE DUCTWORK
(DUCTED INSTALLATION ONLY)
NOTE: To reduce the risk of fire, use only metal ductwork .
1 . Decide where the ductwork will run between the powerpack
insert and the outside . (FIG . 1)
2 . The ducting from this fan to the outside of the building has
a strong effect on the air flow, noise and energy use of the
fan . Use the shortest, straightest duct routing possible for
best performance, and avoid installing the fan with smaller
ducts than recommended . Insulation around the ducts can
reduce energy loss and inhibit mold growth . Fans installed
with existing ducts may not achieve their rated airflow .
Refer to the table below to help you plan the most efficient
installation .
3 . Install wall cap or roof cap (sold separately) . Connect metal
ductwork to cap and work back towards the powerpack
insert location . Use 2” metal foil duct tape to seal the joints
between ductwork sections .
24"
MIN
- 30"
MAX
ABOVE
COOKING
SURFACE
POWERPACK
INSERT
W
ALL
CAP
R
OOF
CAP
6"
ROUND
DUCT
OR
3¼"
X
10"
DUCT
H
OUSE
WIRING
HH0317A
3¼"
X
10"
DUCT
FIG. 1
M
axiMuM
duct
length
recoMMended
to
achieve
80%
exhaust
efficiency
3¼" x 10"
H
orizontal
M
axiMuM
D
uct
l
engtH
3¼" x 10"
V
ertical
M
axiMuM
D
uct
l
engtH
6" r
ounD
M
axiMuM
D
uct
l
engtH
r
oof
or
W
all
cap
WitH
D
aMper
e
lboW
(
s
)*
(90°
anD
/
or
45°)
52 ft .
83 ft .
64 ft .
1
0
43 ft .
74 ft .
55 ft .
1
1
35 ft .
66 ft .
46 ft .
1
2
*Standard elbows with 1" internal radius .
