To Connect The Backup Heater Power Supply - Daikin ETBH12EF6V Installation Manual

B C
X11YA
X2M
X1M
X1M
A1P
a
a Interconnection cable (=main power supply)
In case of preferential kWh rate power supply
Interconnection Wires: (3+GND)×1.5 mm²
cable (= main
power supply)
Normal kWh rate Wires: 1N
power supply
Maximum running current: 6.3 A
Preferential kWh Wires: 2×(0.75~1.25 mm²)
rate power supply
Maximum length: 50 m.
contact
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.
A
A
B
C
1 2 3
ETBH/X12EF6V+9W
Daikin Altherma 3 H MT W
4P634879-1 – 2021.03
X11Y X11YB
1 2 3
X2M
X1A
A1P
6 5
10 9
L N S1S
1N~, 50 Hz,
230 V AC, 6.3 A
B C
X2M
X1M
X1M
A1P
c b a
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.
INFORMATION
The preferential kWh rate power supply contact is
connected to the same terminals (X5M/9+10) as the safety
thermostat. Thus, the
preferential kWh rate power supply OR a safety
thermostat.
6.3.2 To connect the backup heater power
supply
Backup heater Power supply
type
*6V 1N~ 230 V (6V3)
3~ 230 V (6T1)
*9W 3N~ 400 V
[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.
6 Electrical installation
X11YA X11YB X11Y
5 6
1 2 3
X2M
X1A
A1P
system can have EITHER
Wires
2+GND
3+GND
4+GND
Installation manual
13