19
3940011 12.12
5.1 Control Settings
The control must be set to run in Continuous mode for this system. To do this, set dipswitch #1 to the On/Up
position. The dipswitch is located on the back of the display board inside the EBC 30 control box. See the
picture below.
5. START-UP AND CONFIGURATION
Control Settings for Negative Pressure Applications
Parameter
Setting
21
Draft Set-point
*To Be Determined at Start-Up
22
Exhaust Mode
Continuous
262 Alarm Delay
30 Seconds
5.2 Choosing the Set-Point
The draft effects of the chimney fan will decrease as the fireplaces become further away and the set point must
be set to ensure a constant, negative pressure at the furthest fireplace from the fan. For most applications, the
set-point will be between 0.05” W.C. and 0.10” W.C.
To prevent the fireplaces located close to the fan from over-drafting, adjust the stroke of the actuator on each
damper as described in Chapter 5.3.
5.3 Checking Fan Rotation (3-phase only)
Verify the fan blades are rotating clockwise. The EBC 30 can be set to run the fan at a very low
speed while doing this.
If the fan is rotating counter-clockwise, switch the phase wires connecting to terminals V and W of the VFD.
