Installation; Opening The Units; To Open The Outdoor Unit; To Open The Indoor Unit - Daikin Altherma Installer's Reference Manual

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
backup heater
4 Preferential kWh rate
power supply (voltage
free contact)
5 Normal kWh rate power
supply
User interface
6 User interface
Optional equipment
7 3‑way valve
8 Power supply for
booster heater and
thermal protection
(from indoor unit)
9 Power supply for
booster heater (to
indoor unit)
10 Domestic hot water
tank thermistor
11 Power supply for
bottom plate heater
12 Room thermostat
13 Outdoor ambient
temperature sensor
14 Indoor 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
(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 use interface
connection.
NOTICE
More technical specifications of the different connections
are indicated on:
▪ Wiring diagram in the switch box of the unit
▪ "15.6 Wiring diagram" on page 84
ERLQ004~008CAV3 + EHBH/X04+08CA
Daikin Altherma - Low Temperature Split
4P313774-1C – 2012.11
Wires Maximum
running
current
2+GND or (a)
3+GND
3 (c)
See table below. —
2 (e)
2 6.3 A
2 (f)
3 100 mA (b)
4+GND (c)
2+GND 13 A
2 (d)
2 (b)
3 or 4 100 mA (b)
2 (b)
2 (b)
4 100 mA (b)
2 100 mA (b)
2 (per meter) (b)
2 (b)
2 (b)
2 (b)
2 (b)
(b)
2 (per input
signal)
Backup heater Power supply
type
*3V 1x 230 V
*9W 1x 230 V
3x 230 V
3x 400 V
7

Installation

7.1

Opening the units

7.1.1

To open the outdoor unit

1 Remove 1 screw from the service cover.
2
2
2 Remove the service cover.
7.1.2

To open the indoor unit

1 Loosen and remove the 2 screws that fix the front panel.
2 Tilt the front panel towards you and remove the front panel.
7 Installation
Required number of
conductors
2+GND
2+GND + 2 bridges
3+GND + 1 bridge
4+GND
1x
1
Installer reference guide
27