Fig. 1
Dip Switch for Fan Speed
Configuration
1 speed fan:
Dial 1 to "ON”; and
2 speed fan:
Dial 2 to "ON”; and
3 speed fan:
Dial 3 to "ON”
White wire ACN
Black wire ACL
Red wire Low speed wire
Yellow wire Medium speed wire
Blue wire High speed wire
Fig. 2
Connection Wires of IT-AF-SMT
Input wires:
Black: Line voltage, ACL
White: Neutral, ACN
Output wires:
Red: Low speed
Yellow: Medium speed
Blue: High speed
Once wiring is completed, close the hub cover and tighten the screw.
Operation:
Power on the Hub:
Switch on power to the hub, the Power indicator on the hub will be on, and other three indicators
will stay off. Press the “Test” button to change fan speed, the fan will run in the following cycles:
1 speed fan:
on
-
> off
-
> on
-
> off,
2 speed fan:
high speed
-
> low speed
-
> off
-
> high speed
-
> low speed
-
> off,
3 speed fan: high speed
-
> medium speed
-
> low speed
-
> off
-
> high speed
-
> medium
speed
-
> low speed
-
> off.
And, the Test indicator will blink as follows:
Low speed on: the speed LED will blink once every 2 seconds,
Medium speed on: the speed LED will blink twice every 2 seconds, and
High speed on: the speed LED will blink three times every 2 seconds.
Notes:
If the corresponding DIP switch of the fan is configured incorrectly, all the indicators on the hub
will keep blinking when the hub is powered on. Please switch off power and re-configure the DIP
switch correctly. Then try again.
Rev 2.0
Page 2 of 2
Installation:
IT-AF-SMT (Hub):
(Please switch off main power before wiring. The installation should be done by qualified personnel
only)
The hub (with a curved bottom) should be attached to the cylindrical fan housing and is wired to the
fan motor.
Remove the screw that holds down the hub cover and flip it up. Once the cover is open, a three
digit dip switch is available for fan speed configuration, as shown in Fig. 1.
