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7 Installation
INFORMATION
To access the domestic hot water temperature sensor, the
switch box can be tilted. The switch box should NOT be
removed from the unit.
Routing
Possible cables (depending on unit type
and installed options)
a
▪ Preferential power supply contact
Low voltage
▪ User interface
▪ Power consumption digital inputs (field
supply)
▪ Outdoor
(option)
▪ Indoor
(option)
▪ Electrical meters (field supply)
▪ Safety thermostat (field supply)
b
▪ Interconnection cable
High voltage power
▪ Normal kWh rate power supply
supply
▪ Preferential kWh rate power supply
▪ Power supply for backup heater
▪ Power supply for bottom plate heater
(option)
c
▪ Heat pump convector (option)
High voltage control
▪ Room thermostat (option)
signal
▪ Shut-off valve (field supply)
▪ Domestic hot water pump (field supply)
▪ Alarm output
▪ Changeover to external heat source
control
▪ Space cool/heat operation control
CAUTION
Do NOT push or place redundant cable length in the unit.
7.9.7
To connect the main power supply
1 Connect the main power supply.
In case of normal kWh rate power supply
X5M
X6YB
X2M
30 31
X6Y
X6YA
X1M
a
1 2 3
1 2 3
Legend: see illustration below.
In case of preferential kWh rate power supply
Connect X6Y to X6YB.
Installer reference guide
42
ambient
temperature
sensor
ambient
temperature
sensor
X1A X19A
X5M
X6Y
3 4
X6YB
X2M
30 31
X6YA
X1M
c
b
a
L N
1 2
3
S1S
L N
1 2 3
a
Interconnection cable (=main power supply)
b
Normal kWh rate power supply
c
Preferential power supply contact
2 Fix the cables with cable ties to the cable tie mountings.
INFORMATION
In case of preferential kWh rate power supply, connect
X6Y to X6YB. The necessity of separate normal kWh rate
power supply to indoor unit (b) X2M/30+31 depends on the
type of preferential kWh rate power supply.
Separate connection to the indoor unit is required:
▪ if preferential kWh rate power supply is interrupted
when active, OR
▪ if no power consumption of the indoor unit is allowed at
the preferential kWh rate power supply when active.
INFORMATION
The preferential kWh rate power supply contact is
connected to the same terminals (X5M/3+4) as the safety
thermostat. It is only possible for the system to have
EITHER preferential kWh rate power supply OR a safety
thermostat.
7.9.8
To connect the backup heater power
supply
CAUTION
To guarantee the unit is completely earthed, always
connect the backup heater power supply and the earth
cable.
The backup heater capacity can vary, depending on the indoor unit
model. Make sure that the power supply is in accordance with the
backup heater capacity, as listed in the table below.
Backup
Backup
heater type
heater
supply
capacity
*3V
3 kW
1~ 230 V
*9W
3 kW
1~ 230 V
6 kW
1~ 230 V
6 kW
3~ 230 V
6 kW
3N~ 400 V
9 kW
3N~ 400 V
(a)
Equipment complying with EN/IEC 61000-3-12 (European/
International Technical Standard setting the limits for
harmonic currents produced by equipment connected to
public low-voltage systems with input current >16 A and
≤75 A per phase.).
ERLQ004~008CA + EHVH/X04+08S18+26CB
X1A
X19A
Power
Maximum
Z
(Ω)
max
running
current
13 A
—
13 A
—
(a)(b)
26 A
—
15 A
—
8.6 A
—
13 A
—
Daikin Altherma – Low temperature split
4P384973-1D – 2018.07
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