Daikin Altherma 3 R MT W, Installation Manual

Page: 16 / 44

6 Electrical installation
Installation manual
16
ELBH/X12E
Daikin Altherma 3 R MT W
4P708482-1 – 2023.03
WARNING
▪ All wiring MUST be performed by an authorised
electrician and MUST comply with the applicable
national wiring regulation.
▪ Make electrical connections to the fixed wiring.
▪ All components procured on-site and all electrical
construction MUST comply with the applicable
legislation.
WARNING
ALWAYS use multicore cable for power supply cables.
WARNING
If the supply cord is damaged, it MUST be replaced by the
manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
CAUTION
Do NOT push or place redundant cable length into the unit.
INFORMATION
When installing field supply or option cables, foresee
sufficient cable length. This will make it possible to open
the switch box and gain access to other components
during service.
6.1 About electrical compliance
Only for the backup heater of the indoor unit
See "6.3.2 To connect the backup heater power supply" [
4
18].
6.2 Guidelines when connecting the
electrical wiring
Tightening torques
Indoor unit:
Item Tightening torque (N•m)
X1M 2.45 ±10%
X2M 0.88 ±10%
X5M 0.88 ±10%
X6M 2.45 ±10%
X7M, X8M 2.45 ±10%
X10M 0.88 ±10%
M4 (earth) 1.47 ±10%
6.3 Connections to the indoor unit
Item Description
Power supply (main) See "6.3.1 To connect the main power
supply" [
4
17].
Power supply (backup
heater) See "6.3.2 To connect the backup heater
power supply" [
4
18].
Shut-off valve See "6.3.3 To connect the shut-off
valve" [ 4 20].
Electricity meters See "6.3.4 To connect the electricity
meters" [
4
20].
Domestic hot water
pump See "6.3.5 To connect the domestic hot
water pump" [ 4 20].
Alarm output See "6.3.6 To connect the alarm
output" [
4
21].
Space cooling/heating
operation control See "6.3.7 To connect the space cooling/
heating ON/OFF output" [
4
21].
Item Description
Changeover to
external heat source
control See "6.3.8 To connect the changeover to
external heat source" [
4
22].
Power consumption
digital inputs See "6.3.9 To connect the power
consumption digital inputs" [
4
22].
Safety thermostat See "6.3.10 To connect the safety
thermostat (normally closed
contact)"
[
4
23].
Smart Grid See "6.3.11 To connect a Smart
Grid" [ 4 23].
WLAN cartridge See "6.3.12 To connect the WLAN
cartridge (delivered as accessory)" [
4
25].
Room thermostat
(wired or wireless) See below table.
Wires: 0.75 mm²
Maximum running current: 100 mA
For the main zone:
▪ [2.9] Control
▪ [2.A] Ext thermostat type
For the additional zone:
▪ [3.A] Ext thermostat type
▪ [3.9] (read-only) Control
Heat pump convector There are different controllers and
setups possible for the heat pump
convectors.
Depending on the setup, you also
need to implement a relay (field
supply, see addendum book for
optional equipment).
For more information, see:
▪ Installation manual of the heat
pump convectors
▪ Installation manual of the heat
pump convector options
▪ Addendum book for optional
equipment
Wires: 0.75 mm²
Maximum running current: 100 mA
For the main zone:
▪ [2.9] Control
▪ [2.A] Ext thermostat type
For the additional zone:
▪ [3.A] Ext thermostat type
▪ [3.9] (read-only) Control
Remote outdoor
sensor See:
▪ Installation manual of the remote
outdoor sensor
▪ Addendum book for optional
equipment
Wires: 2×0.75 mm²
[9.B.1]=1 ( External sensor =
Outdoor )
[9.B.2] Ext. amb. sensor offset
[9.B.3] Averaging time