DOMUSA TEKNIK DUAL CLIMA R, Инструкция по установке и эксплуатации, Страница: 29 / 84

29 DUAL CLIMA R
Voltage-free connection
When the input to manage the activation of the backup energy source is voltage-free type (i.e. room
thermostat input, phone relay input, etc.), it is necessary to isolate the powered output of the heat
pump (
E1 ) from the voltage-free input of the backup energy source, by means of installing a relay
between them.
To perform correctly this electrical installation follow carefully the diagram
below:
IMPORTANT: Before carrying out any work on the electrical installation of the heat pump,
always ensure it is disconnected from the mains.
6.6.5 Connecting the DHW diverter valve (G2)
When installing an DHW tank in combination with the heat pump, a motorised 3-way diverter valve
must be installed between the unit and the installation. By means of this valve, the electronic controller
of the heat pump will divert the water to the DHW tank (in DHW mode) or to the heating/cooling circuit
(in heating or cooling mode).
The electrical connection of the valve will be made in terminals G2S and N (Neutral) of the component
terminal of the heat pump. The motorised diverter valve has to be equipped with 2 wires (with return
spring) or 3 wires with phase return. In the latter case, the phase wire of supply of the valve (line)
must be connected in the terminal
L of the terminals strip. The following figures describe the connection
of the motorised valve:
HEATING
DHW
NC
V3V
NO
HEAT PUMP
N
G2S
NO: Normally OPEN (not energising the motor).
NC: Normally CLOSE (not energising the motor).
IMPORTANT: Before carrying out any work on the electrical installation of the heat pump,
always ensure it is disconnected from the mains.
N
L
E1L
E2L N
N
G2S G3S N C H COM
L