4 Installation
Installation manual
14
D2C18ND0 D2HND012/18A5AA
Wall-mounted condensing boiler
3P469346-9J – 2018.05
4.8.5
Guidelines when connecting options to
the boiler
DANGER
X2M connector has 230 V AC.
Optional equipment is connected to the connectors, which are
located on the outside of the switch box. Do not open the switch box
to connect optional equipment.
Temperature control units
Connector
Connection
Solar NTC sensor
X1M
1-2
Daikin room thermostat
X1M
3-4
Outdoor sensor
X1M
5-6
Domestic hot water storage tank
sensor
X1M
7-8
External power output (230 V AC)
X2M
3-4
On-Off room thermostat
X2M
5-6
X1M
(1-2)
(3-4)
(5-6)
(7-8)
8
1
X2M
Wiring of the options that are to be connected to the X2M connector
must pop out from the inside of the unit via cable glands. Cable
glands that are sent with the unit must be assembled to the bottom
sheet of the boiler in case connection of these options. Below, you
can see the cable glands placement.
PG 9
PG 9 PG 7 PG 7
Holes on the bottom sheet that are reserved for cable glands are
covered with insulation material. The insulation material must be
bored if glands are to be used.
Note:
Unit must be opened to mount cable glands. See
to reach the inside of the boiler.