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7
Installation
Installer reference guide
25
ERLQ004~008CA + 08S18CA3VF
Daikin Altherma low temperature split
4P3662261 – 2014.01
INFORMATION
The following illustration is an example and may NOT
match your system layout.
M
a
16
21
14
19
15
20
12
6
13
14
17
18
a
Indoor unit
Item
Description
Wires
Maximum
running
current
Outdoor unit and indoor unit power supply
1
Power supply for
outdoor unit
2+GND or
3+GND
(a)
2
Power supply and
interconnection cable to
indoor unit
3
(c)
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
User interface
6
User interface
2
(e)
Optional equipment
12
Room thermostat
3 or 4
100 mA
(b)
13
Outdoor ambient
temperature sensor
2
(b)
14
Indoor ambient
temperature sensor
2
(b)
15
Heat pump convector
4
100 mA
(b)
Field supplied components
16
Shutoff valve
2
100 mA(b)
17
Electricity meter
2 (per meter)
(b)
18
Domestic hot water
pump
2
(b)
19
Alarm output
2
(b)
20
Changeover to external
heat source control
2
(b)
21
Space cool/heat
operation control
2
(b)
22
Power consumption
digital inputs
2 (per input
signal)
(b)
(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. Voltagefree 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
use interface connection.
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
*3V
1× 230 V
2+GND
7
Installation
7.1
Opening the units
7.1.1
To open the outdoor unit
1
Remove 1 screw from the service cover.
1x
1
2
2
2
Remove the service cover.
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