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7 Installation
Installer reference guide
29
ERHQ+ERLQ011~016 + 16CBV
Daikin Altherma – Low temperature split
4P449970-1 – 2016.06
M
M
6
7
c
25
26
24
b
16
21
d
e
8 10
a
9 19
12
23
22
20
15
13
14
17
18
a
Single power supply for outdoor unit and anti-legionella
heater
b
Backup heater (option)
c
Indoor unit
d
Domestic hot water tank
e
Anti-legionella heater
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)
4
Preferential kWh rate
power supply (voltage
free contact)
2
(e)
5
Normal kWh rate power
supply
2
6.3 A
User interface
6
User interface
2
(f)
Optional equipment
7
3‑way valve
3
100 mA
(b)
8
Power supply for anti-
legionella heater and
thermal protection
(from indoor unit)
4+GND
(c)
9
Power supply for anti-
legionella heater (to
indoor unit)
2+GND
13 A
10
Domestic hot water
tank thermistor
2
(d)
11
Power supply for
bottom plate heater
2
(b)
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
Shut-off valve
2
100 mA
(b)
17
Electricity meter
2 (per meter)
(b)
18
Domestic hot water
pump
2
(b)
19
Alarm output
2
(b)
Item
Description
Wires
Maximum
running
current
20
Changeover to external
heat source control
2
(b)
21
Space heating
operation control
2
(b)
22
Power consumption
digital inputs
2 (per input
signal)
(b)
23
Safety thermostat
2
(e)
(a)
Refer to name plate on outdoor unit.
(b)
Minimum cable section 0.75 mm².
(c)
Cable section 2.5 mm².
(d)
The thermistor and connection wire (12 m) are delivered
with the domestic hot water tank.
(e)
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.
(f)
Cable section 0.75 mm² till 1.25 mm²; maximum length:
500 m. Applicable for both single user interface and dual
user interface connection.
NOTICE
More technical specifications of the different connections
are indicated on the inside of the indoor unit.
Backup heater
Item
Description
Wires
Maximum
running
current
Power supply
24
Backup heater power
supply
See table below. —
Interconnection cable
25
Backup heater
thermistor
2
(a)
26
Backup heater thermal
protector
2
(b)
Backup heater
connection
3
(a)
Minimum cable section: 0.75 mm
2
; maximum length: 10 m.
(b)
Minimum cable section: 1.50 mm
2
; maximum length: 10 m.
Backup heater
Power supply
Wires
*6W
1× 230 V
2+GND + 2 bridges
3× 400 V
4+GND
NOTICE
More technical specifications of the different connections
are indicated on the inside of the backup heater.
7
Installation
7.1
Overview: Installation
This chapter describes what you have to do and know on-site to
install the system.