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7 Installation
Item
Description
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
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 cool/heat
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.
NOTICE
More technical specifications of the different connections
are indicated on the inside of the indoor unit.
Backup heater
Power supply
type
*3V
1× 230 V
*9W
1× 230 V
3× 230 V
3× 400 V
7
Installation
7.1
Overview: Installation
This chapter describes what you have to do and know on-site to
install the system.
Installer reference guide
28
Wires
Maximum
running
current
(c)
3
See table below. —
(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
Required number of
conductors
2+GND
2+GND + 2 bridges
3+GND + 1 bridge
4+GND
Typical workflow
Installation typically consists of the following stages:
1
Mounting the outdoor unit.
2
Mounting the indoor unit.
3
Connecting the refrigerant piping.
4
Checking the refrigerant piping.
5
Charging refrigerant.
6
Connecting the water piping.
7
Connecting the electrical wiring.
8
Finishing the outdoor installation.
9
Finishing the indoor installation.
INFORMATION
Depending on the units and/or the installation conditions, it
might be necessary to connect electrical wiring before you
can charge refrigerant.
7.2
Opening the units
7.2.1
About opening the units
At certain times, you have to open the unit. Example:
▪ When connecting the refrigerant piping
▪ When connecting the electrical wiring
▪ When maintaining or servicing the unit
DANGER: RISK OF ELECTROCUTION
Do NOT leave the unit unattended when the service cover
is removed.
7.2.2
To open the outdoor unit
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING
2
1×
7.2.3
To open the indoor unit
1 Loosen and remove the screws at the bottom of the unit.
2 Push on the button at the bottom of the front plate.
WARNING: Sharp edges
Take the front plate on the upper part instead of the lower
part. Watch your fingers, there are sharp edges on the
lower part of the front plate.
ERHQ+ERLQ011~016 + EHVH/X11+16S18+26CB
45°~90°
3
Daikin Altherma – Low temperature split
4P384975-1C – 2018.02
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