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OPERATION
HUMIDITY SENSOR OPERATION
The humidity-sensing fan uses a sophisticated humidity sensor that responds to: (a) rapid to moderate (user-adjustable) increases in
humidity or (b) humidity above a user-adjustable set-point (50%-100% relative humidity). Fan run continuously at a pre-set lower level (set by
Humidity sensor knob) and automatically boost up to certified airflow rate when environmental conditions change). If the fan continuously
responds to changing environmental conditions, "H" (means "humidity") adjustment may be required. This figure is factory-set for about 75%
(Ambient temperature of 25℃).
SENSITIVITY ADJUSTMENT
The "H" has been factory set for most shower applications. However, if the fan is in a tub area or is being used for dampness control, the "H"
may need to be increased toward maximum "+". If the control is responding too often to changing environmental conditions, movement toward
less "-" "H" may be required.
To adjust the "H":
1. Disconnect power at service entrance.
2. Through the grille, locate the slot marked "H".
3. Carefully rotate the "H" adjustment toward "+" or "-".
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.
PLAN THE INSTALLATION
1. Do not use in a cooking area.
2. Two ways to connect ductwork to a factory-shipped unit.
TYPES OF TYPICAL INSTALLATIONS
1. Housing mounted to I-joists (Start at "ASSEMBLY INSTRUCTIONS 1")
2. Housing mounted to joists (Start at "ASSEMBLY INSTRUCTIONS 1" )
3. Housing mounted to truss (Start at step "ASSEMBLY INSTRUCTIONS 2")
ASSEMBLY INSTRUCTIONS
1. MOUNT HOUSING TO JOIST OR I-JOIST.
Hold the housing so that it is in contact with the bottom of the joist. Attach
the housing with four (4) screws to the joist through the holes in each
mounting flange.
2. MOUNT WITH HANGER BARS
2a. Sliding hanger bars have been provided, which allow the housing to
be positioned accurately anywhere between the framing. The bars span
up to 24 in. and can be used on all types of framing: I-joist, standard joist,
and truss construction. Slide hanger bars onto housing and adjust as
needed to fit between framing.
INSULATION*
(Place around and
over Fan Housing.)
FAN
POWER
HOUSING
CABLE*
Seal gaps
around
Housing.
ROUND
DUCT*
Seal duct
*
Purchase
joints with
tape.
separately
HANGER
BAR
2
ROOF CAP*
(with built-in
damper)
Keep duct
runs short
WALL CAP*
(with built-in
ROUND
damper)
ELBOW(S) *
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