Komfovent C4.1 Elektrische Installation Und Bedienungsanleitung Seite 17

• Air damper actuator. Domekt air handling units can be ordered with the prepared connection for air damp-
er actuators. In this case, an additional cable is led outside the unit. 230V AC supply and control voltage is
provided for the connection of the actuator.
Note: For units with water heater the connection of air damper actuators is designed from the external control
box; therefore, connection should not be ordered additionally.
• Supply air temperature sensor. At units with an electrical heater, the sensor is factory-installed inside
the unit. At units with a water heater or a cooler, the sensor is mounted outside; therefore, it is necessary to
install it in the supply air duct downstream the water heater (cooler) section. The minimum distance from the
air vent of the section to the sensor should be at least two diameters of the circular connection.
• Return water temperature sensor. It is connected to the external control box and is mounted on the re-
turn water pipe by screwing it into the designated vent. It is recommended to thermally insulate the sensor.
• Heating/cooling valve actuator. It is connected to the external control box. For hot/cold water mixing, it is
provided connection for actuator with 24 V AC supply voltage and 0...10 V DC control signal.
• Circulation pump. It is connected to the external control box. 230 V AC supply voltage is provided. The
pump is started up/shut down by the circuit breaker QF1.
• Feedback signal for heating or cooling. It is connected to the external control box. By default, the air han-
dling unit is designed to operate with the water heater. However, the design of the control box provides for
two terminals, by interconnecting (short-circuiting) of them the heater mode is reversed to the cooler mode.
1 – external elements control box
2 – return water temperature sensor
3 – supply water temperature sensor
UAB AMALVA we reserve the right to make changes without prior notice
C4.1-16-01-v1
The connection diagram of the external elements is presented on the
internal side of the doors of the control box.
For all units with a water heater, it is recommended to connect an actuator
with a spring-return mechanism, i. e. in the case of loss of voltage, the
actuator should close the air damper.
When the operation of the unit is switched over to the cooler mode, water
freezing protection is deactivated. Therefore, when the unit operates in
the cooling mode during the winter season, it is necessary to ensure that
the water contained in the heater does not freeze.
1.4 b Picture
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