EHVH/X16
Daikin Altherma - Low Temperature Split
4P313777-1 – 2012.05
Installer reference guide
22
7 Installation
7
Installation
7.1
Opening the units
7.1.1 To open the indoor unit and switch box
cover
1
Loosen and remove the screws at the bottom of the unit.
2
Slide the front panel of the unit downwards and remove it.
3
Loosen and remove the 4 screws that fix the top panel.
4
Remove the top panel from the unit.
5
Loosen and remove the 4 screws that fix the switch box cover.
6
Remove the switch box cover.
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
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
(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.
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 use interface
connection.
Backup heater
type
Power supply
Required number of
conductors
*3V
1x 230 V
2+GND
*9W
1x 230 V
2+GND + 2 bridges
3x 230 V
3+GND + 1 bridge
3x 400 V
4+GND
2x
4x
1
3
4
2
4x
