Immergas HYDRO 3 Instructions And Warnings page 33

TERMINAL BLOCK DIAGRAM
For wiring, refer to the wiring diagram for the
indoor unit.
- Single-phase indoor unit.
The power cable must be H05RN-F or higher
minimum cross section of 1.5 mm
Key:
1 - Auxiliary lines terminal block (5 positions)
2 - Power cable terminal block (3 positions)
3 - Configuration dip switch
Alimentazione unità interna 220-240V~50Hz
G/Y
L N
XT1
Key:
1 - Not usable
2 - ON/OFF control from Hydro
Predisposition input for disabling Hydro.
The Hydro board provides for the possibility of
a remote disabling command; to use this func-
tion it is necessary to connect the cable supplied
with the unit to the CN5 connector as shown in
the wiring diagram in Fig. 3-15 (the command
must be equipped with a potential free contact).
To connect the wiring, make sure that the pow-
er supply is disconnected. Then access the elec-
tronic card that is below the area of the terminal
board; to access it, remove the front panel and
remove the screws of the box cover containing
the electronic card.
Once the supplied wiring is connected, it will
be possible to close the card compartment and
then connect the cable to the device disabling
command via terminals not supplied.
.
2
X Y E
1
Colour code key:
BK - Black
BL - Blue
G / Y - Yellow / Green
RD - Red
WH - White
On/off control by Hydro.
Clean contact, provided by Hydro, with loads
up to 700 mA.
The contact is closed if there is a demand for
heat/cool/dry mode on Hydro.
In the absence of requests the contact remains
open.
3-12
2 1 3
3-13
1 2
XT3
2
33