Daikin Altherma EHVH04S23DAV - Connecting the Electrical Wiring; To Connect the Electrical Wiring on the Indoor Unit; To Connect the Main Power Supply

4 Installation
Installation manual
10
EHVH04+08S23DAV
Daikin Altherma – Low temperature split
4P499571-1D – 2018.11
4.5 Connecting the electrical wiring
DANGER: RISK OF ELECTROCUTION
WARNING
ALWAYS use multicore cable for power supply cables.
4.5.1 To connect the electrical wiring on the
indoor unit
1 To open the indoor unit, see "4.1.1To open the indoor unit"on
page6 and "4.1.2To open the switch box cover of the indoor
unit"on page7.
2 The wiring enters the unit from the top:
b+c ad
a, b, c Field wiring (see table below)
d Factory-mounted cable for power supply of anti-legionella
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)
▪ Backup heater thermistor (backup heater
option)
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
▪ Backup heater thermal protector + backup
heater connection (backup heater option)
d
High voltage power
supply (factory-
mounted cable)
▪ Power supply for anti-legionella 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
4.5.2 To connect the main power supply
1 Connect the main power supply.
In case of normal kWh rate power supply