DOMUSA TEKNIK DUAL CLIMA R, Инструкция по установке и эксплуатации

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28 DUAL CLIMA R
6.6.4 Connecting a backup source of energy for DHW (E1)
The DUAL CLIMA R heat pump allows the connection of an electrical heater for DHW production
backup (optional). It should be mounted in the socket provided for this purpose in the tank. With this
heater, it will be possible to obtain hot water temperature exceeding 50 ºC, enabling the necessary
temperature 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 N (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.
As alternative to the backup electrical heater, DUAL CLIMA R heat pump allows the connection of a
conventional source of energy as gas boiler, oil boiler, biomass, etc. For it, the DHW tank must be
provided with an auxiliary coil exchanger and/or any intermediate system of exchange that allows the
hydraulic connection of the above mentioned backup source of energy.
They are used the same terminals E1L and N (Neutral) of the components powerstrip to make the
connection between the backup source of energy and the heat pump. Depending on the installation
characteristics and the type of the backup boiler, the electrical connection could be made at least by 2
different ways:
Direct connection
In this type of connection it is used the powered output of E1 relay (230 V~; maximum 20A) to activate
directly the backup energy source (switch on the boiler, activate the backup circulating pump, etc.).
For it, connect the terminals
E1L and N of the heat pump to the main power supply input of the backup
boiler and/or of the device of the installation provided.
NOTE: When the backup source of energy is connected, it has to be taken in account that
the maximum capacity of E1 relay is 20 A.
E1L
E2L N C4L N C6L L G2S G3S
H COM
N C
N
N
L
E1L
E2L N
N