DOMUSA DUAL CLIMA 11, Installation And Operating Instrictions

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DUAL CLIMA
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9.6.3 Connecting the DHW tank sensor
When installing an DHW tank in combination with the heat pump, a temperature sensor must be
installed in the accumulator. By means of this sensor, the electronic controller of the heat pump will
be able to manage the temperature of the DHW, activating the DHW mode when the temperature
of the accumulator falls below the desired temperature.
The DHW tank sensor is supplied within the DUAL CLIMA heat pump. This sensor is located inside
the machine (in a sensor bundle). To install it, release the sensor from the bundle, take it to where
the DHW tank is located, and insert it into the sensor housing provided in it.
Max. 50 m
DHW TANK SENSOR
The sensor supplied with the heat pump is 5 meters long. If necessary, it can be extended to a
maximum distance of 50 meters (section between 0.5 ÷ 1.25 mm
2 ).
IMPORTANT: Before carrying out any work on the electrical installation of the heat pump,
always ensure it is disconnected from the mains.
9.6.4 Connecting the DHW auxiliary electrical heater (E1)
The DUAL CLIMA heat pump allows the connection of an electrical heater for DHW (optional). It
should be mounted in the socket provided for this purpose in the tank. With this heater, it will be
possible to obtain Domestic Hot Water production temperatures exceeding 50 ºC, enabling the
necessary temperatures to be reached for the correct execution of the function for protection
against the Legionella bacteria.
The electrical connection of the resistor will be made between terminals E1L and E1N (Neutral) of
the component terminal of the heat pump.
The relay that activates the heater has a maximum capacity of 20 A of consumption. Therefore, to
connect resistors exceeding 4,500 W, a contactor must be interposed between the terminals of the
power terminal and the heater.
IMPORTANT: Before carrying out any work on the electrical installation of the heat pump,
always ensure it is disconnected from the mains.