Daikin Altherma 3 R W, Installer'S Reference Manual, Page: 121 / 296

9 | Electrical installation
Installer reference guide
121
ERGA04~08EA + EHBH/X04+08EF
Daikin Altherma 3 R W
4P629085-1B – 2021.11
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.
9.3.2 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.