CB HEATER CONNECTION KIT 2 3 PHASEV2

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Electric duct heater (control via relay)
1.1 Heater installed in the outdoor air duct
Installation and connection
1. Install an electric heater (ELH) at least 100 mm distance from the unit in
the outdoor air duct. A relay (RL) is used to control the heater. Connect re-
lay to any free digital output on the connection board (CB).
2. Connect the power supply to the electric heater via a relay. A circuit break-
er (BRK) is not included in the package and must be ordered separately. It
must be installed in the circuit.
3. Install a duct temperature sensor (OAT) before the electric heater and con-
nect it to any free analog input on the connection board (CB).
Outdoor air heater configuration
1. Go to Service menu
2. Enter password (default 1111)
3. Set the heater type: Components —> Extra Controller —>Extra
Controller Mode —> Preheater.
4. Configure connection of the pre-heater. Go to Service menu. Select
Output menu. In next menu select DIGITAL tab. Select the digital output
to which the pre-heater is connected. Example if it is connected to DO3 on
the connection board, then select DIGITAL OUTPUT 3 and select Step
Controller Y4 Extra Controller from the output type list.
5. Re-configure an internal outdoor air temperature sensor as the extra con-
troller temperature sensor: —> —> tab. Select the ANALOG INPUT 1 and
change its configuration from Outdoor Air Temp. Sensor (OAT) to
Extra Controller Temp. Sensor (ECT).
210241 | v002