6 Electrical installation
Installation manual
11
EA23DA6V(7)+9W
Daikin Altherma 3 H F
4P556073-1A – 2021.09
WARNING
ALWAYS use multicore cable for power supply cables.
6.1
About electrical compliance
Only for the backup heater of the indoor unit
"6.3.4 To connect the backup heater power supply"
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%
X10M
0.88 ±10%
M4 (earth)
1.47 ±10%
6.3
Connections to the indoor unit
6.3.1
Overview of electrical connections for
external and internal actuators
Item
Description
Wires
Maximum
running
current
Outdoor unit and indoor unit power supply
1
Power supply for
outdoor unit
2+GND
(a)
2
Power supply and
interconnection cable to
indoor unit
3
(f)
3
Power supply for
backup heater
See table below. —
4
Preferential kWh rate
power supply (voltage
free contact)
2
(d)
5
Normal kWh rate power
supply
2
6.3 A
Optional equipment
6
User interface used as
room thermostat
2
(e)
7
Room thermostat
3 or 4
100 mA
(b)
8
Outdoor ambient
temperature sensor
2
(b)
9
Indoor ambient
temperature sensor
2
(b)
10
Heat pump convector
2
100 mA
(b)
Field supplied components
11
Shut-off valve
2
100 mA
(b)
12
Electricity meter
2 (per meter)
(b)
13
Domestic hot water
pump
2
(b)
14
Alarm output
2
(b)
15
Changeover to external
heat source control
2
(b)
Item
Description
Wires
Maximum
running
current
16
Space heating
operation control
2
(b)
17
Power consumption
digital inputs
2 (per input
signal)
(b)
18
Safety thermostat for
the main zone
2
(b)
19
Safety thermostat for
the additional zone
2
(d)
(a)
Refer to name plate on outdoor unit.
(b)
Minimum cable section 0.75 mm².
(c)
Cable section 2.5 mm².
(d)
Cable section 0.75 mm² till 1.25 mm²; maximum length:
50 m. Voltage-free contact shall ensure the minimum
applicable load of 15 V DC, 10 mA.
(e)
Cable section 0.75 mm² till 1.25 mm²; maximum length:
500 m.
(f)
Cable section 1.5 mm².
NOTICE
More technical specifications of the different connections
are indicated on the inside of the indoor unit.
Backup heater
type
Power supply
Required number of
conductors
*6V
1N~ 230 V (6V)
2+GND
3~ 230 V (6T1)
3+GND
*9W
3N~ 400 V
4+GND
6.3.2
To connect the electrical wiring to the
indoor unit
1
To open the indoor unit, see
2
The wiring enters the unit from the top:
b+c
a
d
a, b, c
Field wiring (see table below)
d
Factory-mounted cable for power supply of backup heater
3
Routing of the wiring inside the unit should be as follows. Fix
the cable to the cable rail using cable ties:
a
4×
b+c
