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UAB AMALVA we reserve the right to make changes without prior notice.
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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.
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Return water temperature sensor.
It is connected to the external control box and is mounted on the return
water pipe by screwing it into the designated vent. It is recommended to thermally insulate the sensor.
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Heating/cooling valve actuator.
It is connected to the external control box. For hot/cold water mixing, it is
provided connection for actuator with 24V AC supply voltage and 0...10V DC control signal.
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Circulation pump.
It is connected to the external control box. 230V AC supply voltage is provided. The pump
is started up/shut down by the circuit breaker QF1.
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Feedback signal for heating or cooling.
It is connected to the external control box. By default, the air handling
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.
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 – external elements control box;
2 – return water temperature sensor;
3 – supply water temperature sensor.
1.4 b Picture
Summary of Contents for Domekt RECU
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