Specifications

27
RED ORANGE WHITE BLACK GREEN
FAN
MOTOR
120/1/60
NOTES:
THE DISCONNECT MEANS AND CIRCUIT PROTECTION ARE TO
BE PROVIDED BY THE INSTALLER OF THIS DEVICE
1
All wiring must be in
flexible or rigid metal
conduit
LEGEND:
24 VAC
120 VAC
N
L
FAN CONTROL UNIT
7 8 9 10 11 12 13 14 15 16 17 18 19
1 2 3 4 5 6
WEATHERPROOF BOX
MAIN CONTROL UNIT
6 5 4 3 2 1
All wiring must be in
metal conduit or
shielded cable
Junction
Box with
Control Unit
EFC211, Fan
Control
Chimney
Fan
6.3 Mechanical Draft System for a Wood-red
Fireplace with Safety System per
NFPA211/IMC-2000 edition (and after)
Application
In jurisdictions where the 2000 or later edition of the
NFPA211 has been adopted, there are new
requirements for the use of mechanical draft systems
in conjunction with solid fuel. The installation requires
a safety control such as the EFC 211 Fan Control.
Sequence of Operation
1. Turn the control on by turning the knob clockwise.
A “click” indicates the control is turned on. Adjust
the knob to the desired speed. The speed must
be set so no smoke spills from the solid fuel
heating appliance (replace, stove, wood-
red oven etc.) through the opening into a room.
The smoke should be safely exhausted through
the chimney.
2. The chimney fan will start with a 15 second boost
to ensure proper fan operation and the green
LED on the speed control unit cover will ash.
After 15 seconds, the fan speed will be reduced
to the preset level and continue to operate at this
speed.
3. During appliance operation the speed setting can
be adjusted if needed. This is especially true if
logs are added.
4. The control constantly monitors the chimney
fan operation. It automatically measures
the fan speed every minute and if necessary, it
increases the fan speed. This can be heard as
quiet “hick-up” from the fan. If necessary, the
control increases the fan speed to 100% for 15
seconds (green LED ashes), after which it will
slow the fan speed down to set speed.
5. If the green LED ashes during operation (after
the 15 seconds initiation) the fan speed is set
too low or the fan wheel is somehow obstructed.
If the red LED ashes and the buzzer sounds,
the following may be the cause:
• Blocked ue.
• Defect chimney fan
• Disconnected thermo-couple
• Disconnected power supply The control can be reset, and
the alarm turned off, by pressing the RESET button for 1-2
seconds.
Please see important note on page 24.
System 3
Wood-Fired Fireplace