Preparing Electrical Wiring; Overview Of Electrical Connections For External And Internal Actuators; Installation; Opening The Units - Daikin Altherma EHVH08S18CBV Installation Manual

3.3

Preparing electrical wiring

3.3.1 Overview of electrical connections for
external and internal actuators
Item Description
Outdoor unit and indoor unit power supply
1 Power supply for
outdoor unit
2 Power supply and
interconnection cable to
indoor unit
3 Power supply for anti-
legionella 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 heating
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.
EHVH04+08S18CBV + EHVH08~16S26CBV
Daikin Altherma – Low temperature split
4P449977-1B – 2018.02
Wires Maximum
running
current
(a)
2+GND or
3+GND
(c)
3
(c)
2+GND
(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
4

Installation

4.1

Opening the units

4.1.1

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.
3 Slide the front panel of the unit downwards and remove it.
CAUTION
The front panel is heavy. Be careful NOT to jam your
fingers when opening or closing the unit.
4 Loosen and remove the 4 screws that fix the top panel.
5 Remove the top panel from the unit.
4
4×
5
2
4.1.2 To open the switch box cover of the
indoor unit
4×
4 Installation
2
2×
1
Installation manual
5