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6 Electrical installation
Installation manual
14
ETSH/X(B)12P30+50EF
Daikin Altherma 3 H MT ECH
₂
O
4P663479-1 – 2021.07
With installed drainback solar kit (option)
1
Combine the fill and drain kit (option) with the drainback solar
kit (option) to fill the storage tank.
2
Connect the hose with non-return valve to the fill and drain kit.
Follow the steps described in the previous chapter.
5.2.7
To insulate the water piping
The piping in the complete water circuit MUST be insulated to
prevent condensation during cooling operation and reduction of the
heating and cooling capacity.
Outdoor water piping insulation
See the installation manual of the outdoor unit, or the installer
reference guide.
6
Electrical installation
DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
CAUTION
Do NOT push or place redundant cable length in the unit.
NOTICE
The distance between the high voltage and low voltage
cables should be at least 50 mm.
6.1
About electrical compliance
Only for the backup heater of the indoor unit
See
"6.3.3 To connect the backup heater power supply"
17].
6.2
Guidelines when connecting the
electrical wiring
Tightening torques
Indoor unit:
Item
Tightening torque (N•m)
M4 (X1M)
1.2
M4 (X12M, X15M)
0.88 ±10%
Indoor unit – BUH option:
Item
Tightening torque (N•m)
M4 (X6M) *3V, *6V
2.45 ±10%
M4 (X6M) *9W
1.2
6.3
Connections to the indoor unit
Item
Description
Power supply (main)
"6.3.2 To connect the main power
Power supply (backup
heater)
"6.3.3 To connect the backup heater
Backup heater
"6.3.4 To connect the backup heater to
Shut-off valve
"6.3.5 To connect the shut-off
Electricity meters
"6.3.6 To connect the electricity
Item
Description
Domestic hot water
pump
See
"6.3.7 To connect the domestic hot
20].
Alarm output
See
Space cooling/heating
operation control
See
"6.3.9 To connect the space cooling/
21].
Changeover to
external heat source
control
See
"6.3.10 To connect the changeover to
22].
Power consumption
digital inputs
See
Safety thermostat
See
thermostat (normally closed
contact)"
23].
Smart Grid
See
24].
WLAN cartridge
See
cartridge (delivered as accessory)"
Solar input
See
DHW output
See
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]
Thermostat type
For the additional zone:
▪ [3.A]
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 option EKRELAY1.
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]
Thermostat type
For the additional zone:
▪ [3.A]
Thermostat type
▪ [3.9] (read-only)
Control