6 Electrical installation
Installation manual
14
ETBH/X16E
Daikin Altherma 3 H HT W
4P644727-1B – 2022.03
C
B
1 2 3
X11YA
X11YB
X11Y
X1A
A1P
X2M
X1M
X2M
A1P
a
X1M
a
Interconnection cable (=main power supply)
In case of preferential kWh rate power supply
Interconnection
cable (= main
power supply)
Wires: (3+GND)×1.5 mm²
Normal kWh rate
power supply
Wires: 1N
Maximum running current: 6.3 A
Preferential kWh
rate power supply
contact
Wires: 2×(0.75~1.25 mm²)
Maximum length: 50 m.
Preferential kWh rate power supply
contact: 16 V DC detection (voltage
supplied by PCB). The voltage-free
contact shall ensure the minimum
applicable load of 15 V DC, 10 mA.
[9.8]
Benefit kWh power supply
Connect X11Y to X11YB.
N
L
5
6
B
C
A
A
10 9
S1S
1 2 3
1N~, 50 Hz,
230 V AC, 6.3 A
C
B
5 6
1 2 3
X11YA X11YB
X11Y
X5M
X1A
X2M
X1M
X5M
X2M
c
b
a
A1P
A1P
X1M
10
9
a
Interconnection cable (=main power supply)
b
Normal kWh rate power supply
c
Preferential power supply contact
3
Fix the cables with cable ties to the cable tie mountings.
INFORMATION
In case of preferential kWh rate power supply, connect
X11Y to X11YB. The necessity of separate normal kWh
rate power supply to indoor unit (b) X2M/5+6 depends on
the type of preferential kWh rate power supply.
Separate connection to the indoor unit is required:
▪ if preferential kWh rate power supply is interrupted
when active, OR
▪ if no power consumption of the indoor unit is allowed at
the preferential kWh rate power supply when active.
6.3.2
To connect the backup heater power
supply
Backup heater
type
Power supply
Wires
*6V
1N~ 230 V (6V3)
2+GND
3~ 230 V (6T1)
3+GND
*9W
3N~ 400 V
4+GND
[9.3]
Backup heater
WARNING
The backup heater MUST have a dedicated power supply
and MUST be protected by the safety devices required by
the applicable legislation.
CAUTION
If the indoor unit has a tank with a built‑in electrical booster
heater, use a dedicated power circuit for the backup heater
and booster heater. NEVER use a power circuit shared by
another appliance. This power circuit MUST be protected
with the required safety devices according to the applicable
legislation.
CAUTION
To guarantee the unit is completely earthed, ALWAYS
connect the backup heater power supply and the earth
cable.
The backup heater capacity can vary, depending on the indoor unit
model. Make sure that the power supply is in accordance with the
backup heater capacity, as listed in the table below.
