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The exodraft EBC24 is a true PID-based fan speed control used to maintain a constant pressure or draught in a flue/duct system. It can only be used with exodraft fans.


The control automatically adjusts the speed based on the amount of exhaust gasses in the flue.

EBC24 can control the fan speed on a single phase AC motor directly (1x230V) or a three-phase motor indirectly via a VFD (variable frequency drive) that adjusts the motor speed.

The control has an integrated safety system to assure that heating appliances connected to the flue system will be shut down in case of insufficient draught. This ensures safe operation at all times, regardless of external factors (e.g. weather conditions).

The EBC24 control is not restricted to any type of fuel, heating appliance or chimney.
The unit features “plug-and-play” to automatically monitor all terminals and register components attached to the control during initial start-up. It comes pre-programmed from the factory, but can be further programmed in the field using the LCD 128×64 dot display and buttons.

The EBC24 has two heating appliance interlock circuits as standard but can be expanded in multiples of four with the use of additional relay boards (ES12).

A self-diagnostic panel with LEDs monitors all connection terminals for easy service and troubleshooting. Provided the integrated safety system is satisfied, interlocked heating appliances are allowed. Programming or reading out data is done via a USB port.

The EBC24 has an alarm output for a BMS-system. An alarm via a buzzer can also be made through the buzzer output.

The EBC24 has terminals for connecting a RS485 communication BUS.

Control EBC24
Dimension (H x W x D) 175 x 175 x 110 mm
Weight 1.5 kg
Density class IP 54
Control range 0 Pa – 150 Pa
Fuse 4.0T
Voltage 230 V AC, 50 Hz
Max. Motor load. 475 W
Ambient temperature -20 ºC – +60 ºC
Material ABS PA758
XTP sensor:
Dimension (H x W x D) 80 x 82 x 55.5 mm
Ambient temperature -25 ºC to +70 ºC
Max. Distance to EBC20 XTP-sensor 100 m
Density class IP 54
For indoor installation. The EBC24 is an automatic control for chimney fans on boilers and large systems.
For outdoor installation. The EBC24 is an automatic control for chimney fans on boilers and large systems.
Relay boxes

Relay box for the EBC20 and EBC22 controls. It is possible to connect up to four boilers

Frequency converters

Frequency converter FRK008 is used with exodraft RSV400-4-2 chimney fan, and the frequency converter FRK009 is used with the exodraft RSV450-4-2 chimney fan

Posted by bech_morten / Posted on 04 Sep
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