Daikin Altherma 3 H F - Operation; User Interface Overview

6 Electrical installation
Installation manual
11
EAVZ16S18+23DA6V(7)+9W
Daikin Altherma 3 H F
4P556073-1A – 2021.09
WARNING
ALWAYS use multicore cable for power supply cables.
6.1 About electrical compliance
Only for the backup heater of the indoor unit
See "6.3.4To connect the backup heater power supply"[413].
6.2 Guidelines when connecting the
electrical wiring
Tightening torques
Indoor unit:
Item Tightening torque (N•m)
X1M 2.45 ±10%
X2M 0.88 ±10%
X5M 0.88 ±10%
X6M 2.45 ±10%
X10M 0.88 ±10%
M4 (earth) 1.47 ±10%
6.3 Connections to the indoor unit
6.3.1 Overview of electrical connections for
external and internal actuators
Item Description Wires Maximum
running
current
Outdoor unit and indoor unit power supply
1 Power supply for
outdoor unit
2+GND
(a)
2 Power supply and
interconnection cable to
indoor unit
3
(f)
3 Power supply for
backup heater
See table below. —
4 Preferential kWh rate
power supply (voltage
free contact)
2
(d)
5 Normal kWh rate power
supply
2 6.3A
Optional equipment
6 User interface used as
room thermostat
2
(e)
7 Room thermostat 3 or 4 100mA
(b)
8 Outdoor ambient
temperature sensor
2
(b)
9 Indoor ambient
temperature sensor
2
(b)
10 Heat pump convector 2 100mA
(b)
Field supplied components
11 Shut-off valve 2 100mA
(b)
12 Electricity meter 2 (per meter)
(b)
13 Domestic hot water
pump
2
(b)
14 Alarm output 2
(b)
15 Changeover to external
heat source control
2
(b)
Item Description Wires Maximum
running
current
16 Space heating
operation control
2
(b)
17 Power consumption
digital inputs
2 (per input
signal)
(b)
18 Safety thermostat for
the main zone
2
(b)
19 Safety thermostat for
the additional zone
2
(d)
(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.
(f) Cable section 1.5mm².
NOTICE
More technical specifications of the different connections
are indicated on the inside of the indoor unit.
Backup heater
type
Power supply Required number of
conductors
*6V 1N~ 230V (6V) 2+GND
3~ 230V (6T1) 3+GND
*9W 3N~ 400V 4+GND
6.3.2 To connect the electrical wiring to the
indoor unit
1 To open the indoor unit, see "4.2.1 To open the indoor
unit"[45].
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 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