Installation; Opening The Units; To Open The Outdoor Unit - Daikin Altherma ERLQ004CAV3 Installer's Reference Manual

INFORMATION
The following illustration is an example and may NOT
match your system layout.
a
20 6
15 12
21
13
16
14
14
17
18 19
a
Indoor unit
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
12 Room thermostat
13 Outdoor ambient
temperature sensor
14 Indoor ambient
temperature sensor
15 Heat pump convector
Field supplied components
16 Shut­off 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) Cable section 0.75 mm² till 1.25 mm²; maximum length:
50 m. Voltage­free 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.
ERLQ004~008CA + EHVH04+08S18CA3VF
Daikin Altherma low temperature split
4P366226­1 – 2014.01
M
Wires Maximum
running
current
(a)
2+GND or
3+GND
(c)
3
See table below. —
(d)
2
2 6.3 A
(e)
2
(b)
3 or 4 100 mA
(b)
2
(b)
2
(b)
4 100 mA
100 mA(b)
2
(b)
2 (per meter)
(b)
2
(b)
2
(b)
2
(b)
2
(b)
2 (per input
signal)
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
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 Installation
Required number of
conductors
2+GND
1x
1
Installer reference guide
25