7 Installation
Installer reference guide
38
ERGA04~08DAV3(A) + 08S18+23DA
Daikin Altherma – Low temperature split
4P495249-1 – 2017.12
1×
1×
6
Connect an earth leakage circuit breaker and fuse to the power
supply line.
7.9.7
To connect the electrical wiring on the
indoor unit
1
To open the indoor unit, see
"7.2.3 To open the indoor unit" on
"7.2.4 To open the switch box cover of the indoor
.
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
WARNING
Make sure that the electrical wiring does NOT touch the
refrigerant gas pipe, which can be very hot.
a
a
Refrigerant gas pipe
Routing
Possible cables (depending on unit type
and installed options)
a
Low voltage
▪ Preferential power supply contact
▪ User interface used as room thermostat
(option)
▪ Power consumption digital inputs (field
supply)
▪ Outdoor ambient temperature sensor
(option)
▪ Indoor
ambient
temperature
sensor
(option)
▪ Electrical meters (field supply)
▪ Safety thermostat (field supply)
b
High voltage power
supply
▪ Interconnection cable
▪ Normal kWh rate power supply
▪ Preferential kWh rate power supply
c
High voltage control
signal
▪ Heat pump convector (option)
▪ Room thermostat (option)
▪ Shut-off valve (field supply)
▪ Domestic hot water pump (field supply)
▪ Alarm output
▪ Changeover to external heat source
control
▪ Space heating operation control
d
High voltage power
supply (factory-
mounted cable)
▪ Power supply for backup heater
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
With 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
