2. Mount with mountion holes and hanger bar
Slide one hanger bar into the channel on the housing and adjust as
needed to fit between framing. Hold housing in place so that the housing
contact the bottom of the joist, Screw housing to joist through the hole A
and hole B. Screw the hanger bar onto the other side of joist through the
hole (refer to the right diagram).
Screw hanger bar to housing with screw A.
OPERATION
PLAN THE INSTALLATION
1. Do not use in a cooking area.
2. Two ways to connect ductwork to a factory-shipped unit.
ASSEMBLY INSTRUCTIONS
2
4. Turn on power and check operation by turning on the shower or other humidity source until the fan turns on.
5. Repeat above steps if necessary.
When the temperature changes, humidity sensor values will have deviation.
TIMER ADJUSTMENT
The humidity sensing fan has a “T” (means timer) that can be adjusted from 5 to 60 minutes (factory-set at about 20 min-
utes). This “T” controls the length of time that the fan remains ON after the sensor has stopped sensing a rise in humidity
and the humidity level is below the user-adjustable set-point. To adjust the “T”:
1. Disconnect power at service entrance;
2. Through the grille, locate the slot marked “T”;
3. Carefully rotate the “T” adjustment to desired setting (from 5 to 60 minutes).
4. Check operation by turning on a humidity source until the fan turns on.
5. Turn humidity source off and time the unit.
6. Repeat above steps if necessary.
Distance A
JOIST
1. Before installation, you need to know:
Fig. 1
Fig. 2
Hole A
Hole B
Hole A
Hole B
Distance A
13 1/4 in to 15 1/2 in (336mm-394mm)
16 1/2 in to 18 7/8 in (419mm-480mm)
Hanger Bar
Channel
Channel A (Fig. 1)
Channel B (Fig. 2)
Hanger bar (short)
Hanger bar (long)
The choice of Hanger Bar
Channel A
Channel B
ST4.2*13mm
Screw A
Screw B
Hanger bar
(short)
Hanger bar
(long)
ST4.2*25mm
7 1/2 in (190mm)
13 3/8 in (340mm)
Screw A
Screw B
Note: Hanger bar (short) only can slide into channle A.
Screw A
Screw A
Screw A
Screw B
ROOF CAP*
(with built-in
damper)
ROUND
DUCT*
WALL CAP*
(with built-in
damper)
*
Purchase
separately
POWER
CABLE*
INSULATION*
(Place around and
over Fan Housing.)
Seal gaps
around
Housing.
FAN
HOUSING
ROUND
ELBOW(S) *
Seal duct
joints with
tape.
Keep duct
runs short
