EFC 211 Control Components
The
exodraft
EFC 211 control is built up around a main control units that controls all basic functions.
The main control units controls the draft or exhaust function. It is connected directly to the power supply and
feeds power to the
exodraft
chimney fan.
The main control unit is shown below in Fig. 1:
The front panel serves as a cover for a 4x4 junction, while the control unit is mounted on the back of the
cover. The board contains the wiring terminals as well as the triac used to control the speed of the
exodraft
chimney fan. The board is protected by a fuse.
The speed control unit is connected to the main control unit . The speed control unit is shown below in
Fig. 2:
The speed control unit is used to turn the chimney fan on and off, set the fan speed and monitor the
operation. It has indicator lights to confirm operation and to warn in case of malfunctions. The control has an
audible alarm that sounds in case of power failure or other failure involving the chimney fan.
The control unit has a rechargeable battery back-up used to operate the control’s safety functions.
Fig. 2
Fig. 1
Front
Back
Front
Back
terminals
terminals
Battery
Dial
Warning light
on/off indicator
reset button
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