Daikin ETSXB16E, Installer'S Reference Manual

Page: 107 / 316

9 | Electrical installation
Installer reference guide
107
EPRA14~18D + ETSH/X(B)16P30+50E
Daikin Altherma 3 H HT ECH₂O
4P679467-1C – 2023.07
9.1.5 Overview of electrical connections except external actuators
NOTICE
Unlike to other indoor unit model types, Daikin Altherma 3 * ECH₂O always needs a
dedicated power supply for the indoor unit. It is NOT possible to use the
interconnection cable as power supply for the indoor unit.
Normal power supply Preferential kWh rate power supply
Power supply is NOT
interrupted
Power supply is
interrupted
1
5
580
1 50
0
0
2
a
3
1
4
5
580
1 50
0
0
2
b
3
During preferential kWh
rate power supply
activation, power supply
is NOT interrupted. The
outdoor unit is turned off
by the control.
Remark: The electricity
company must always
allow the power
consumption of the
indoor unit.
5 3
a
b
1 4
580
1 50
0
0
580
1 50
0
0
2
During preferential kWh
rate power supply
activation, power supply
is interrupted
immediately or after
some time by the
electricity company. In
this case, the indoor unit
must be powered by a
separate normal power
supply.
a Normal power supply
b Preferential kWh rate power supply
1 Power supply for outdoor unit
2 Interconnection cable to indoor unit
3 Power supply for backup heater (optional)
4 Preferential kWh rate power supply (voltage free contact)
5 Power supply for indoor unit