To Connect The Main Power Supply - Daikin ERGA08DAV3 Installer's Reference Manual

7 Installation
Routing Possible cables (depending on unit type
and installed options)
a ▪ Preferential power supply contact
Low voltage ▪ User interface used as room thermostat
(option)
▪ Power consumption digital inputs (field
supply)
▪ Outdoor
(option)
▪ Indoor
(option)
▪ Electrical meters (field supply)
▪ Safety thermostat (field supply)
b ▪ Interconnection cable
High voltage power ▪ Normal kWh rate power supply
supply
▪ Preferential kWh rate power supply
c ▪ Heat pump convector (option)
High voltage control ▪ Room thermostat (option)
signal
▪ Shut-off valve (field supply)
▪ Domestic hot water pump (field supply)
▪ Alarm output
▪ Changeover to external heat source
control
▪ Space heating operation control
d ▪ Power supply for backup heater
High voltage power
supply (factory-
mounted cable)
CAUTION
Do NOT push or place redundant cable length in the unit.
4 Seal the low voltage wiring intake using the sealing tape
(delivered as accessory).
Without low voltage cables
7.9.8

To connect the main power supply

1 Connect the main power supply.
In case of normal kWh rate power supply
Installer reference guide
40
ambient temperature sensor
ambient temperature sensor
With low voltage cables
1 2 3
1 2 3
a
1 2 3
X2M
X11YB
X11YA
X1M
X11Y
X1A
Legend: see illustration below.
In case of preferential kWh rate power supply
Connect X11Y to X11YB.
1 2 3 N L
1 2 3 N L
a b c
1 2 3 5 6
X11YB X2M
X11YA X1M
X11Y
X1A
a Interconnection cable (=main power supply)
b Normal kWh rate power supply
c Preferential power supply contact
2 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 for the additional zone. It is only possible for the
system to have EITHER preferential kWh rate power
supply OR a safety thermostat for the additional zone.
ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +
X5M
A5P
S1S
9 10
X5M
A5P
EHVZ04+08S18+23DJ
Daikin Altherma 3 R F
4P495249-1B – 2019.06