Overview Of Electrical Connections Except External Actuators; Overview Of Electrical Connections For External And Internal Actuators - Daikin Altherma EHVH08SU18CB6W Installer's Reference Manual

Consult with the electricity company acting as provider at the site
where this equipment is to be installed to know whether it is
appropriate to connect the equipment in one of the preferential kWh
rate power supply delivery systems available, if any.
When the equipment is connected to such preferential kWh rate
power supply, the electricity company is allowed to:
▪ interrupt power supply to the equipment for certain periods of time;
▪ demand that the equipment only consumes a limited amount of
electricity during certain periods of time.
The indoor unit is designed to receive an input signal by which the
unit switches into forced off mode. At that moment, the outdoor unit
compressor will not operate.
Whether the power supply is interrupted or not, the wiring to the unit
is different.
6.5.3 Overview of electrical connections except
external actuators
Normal power Preferential kWh rate power supply
supply
Power supply is
NOT interrupted
a
0
0 58 0
1 5 0
3 1
2
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.
a Normal power supply
b Preferential kWh rate power supply
1 Power supply for outdoor unit
2 Power supply and interconnection cable to indoor unit
3 Power supply for backup heater
4 Preferential kWh rate power supply (voltage free contact)
5 Normal kWh rate power supply (to power the indoor unit
PCB in the event of power supply interruption of the
preferential kWh rate power supply)
6.5.4 Overview of electrical connections for
external and internal actuators
The following illustration shows the required field wiring.
INFORMATION
The following illustration is an example and might NOT
match your system layout.
ERLQ004~008CA + EHVH04+08SU18+26CB6W
Daikin Altherma – Low temperature split
4P449978-1B – 2018.07
Power supply is
interrupted
b a b
0 0 0 0
58 0 58 0
0 0 1 5 0 1 5 0
58 0
1 5 0
5 3 4 1
3 1
4
2
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
20 6
15 12
13
21
23
16
22
17
18 19
a Indoor unit
Item Description
Outdoor unit and indoor unit power supply
1 Power supply for
outdoor unit
2 Power supply and
interconnection cable to
indoor unit
3 Power supply for
backup heater
3a Power supply for
booster heater
4 Preferential kWh rate
power supply (voltage
free contact)
5 Normal kWh rate power
supply
User interface
6 User interface
Optional equipment
11 Power supply for
bottom plate heater
12 Room thermostat
13 Outdoor ambient
temperature sensor
15 Heat pump convector
Field supplied components
16 Shut-off valve
17 Electricity meter
18 Domestic hot water
pump
19 Alarm output
20 Changeover to external
heat source control
21 Space heating
operation control
22 Power consumption
digital inputs
23 Safety thermostat
(a) Refer to name plate on outdoor unit.
(b) Minimum cable section 0.75 mm².
(c) Cable section 2.5 mm².
(d) Cable section 0.75 mm² till 1.25 mm²; maximum length:
50 m. Voltage-free contact shall ensure the minimum
applicable load of 15 V DC, 10 mA.
(e) Cable section 0.75 mm² till 1.25 mm²; maximum length:
500 m. Applicable for both single user interface and dual
user interface connection.
6 Preparation
M
Wires Maximum
running
current
(a)
2+GND or
3+GND
(c)
3
See table below. —
(c)
2+GND
(d)
2
2 6.3 A
(e)
2
(b)
2
(b)
3 or 4 100 mA
(b)
2
(b)
4 100 mA
(b)
2 100 mA
(b)
2 (per meter)
(b)
2
(b)
2
(b)
2
(b)
2
(b)
2 (per input
signal)
(d)
2
Installer reference guide
29