Overview Of Electrical Connections For External And Internal Actuators; Installation; Opening The Units; To Open The Outdoor Unit - Daikin ERLQ004CA Installer's Reference Manual

6.4.4 Overview of electrical connections for
external and internal actuators
The following illustration shows the required field wiring.
INFORMATION
The following illustration is an example and may NOT
match your system layout.
c
20
12 6
15
b
13
14
17
18
8 10
9 19
a
a Single power supply for outdoor unit, backup heater and
booster heater
b Backup heater
c Indoor unit
d Domestic hot water tank
e Booster heater
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
EHBH04+08 + ERLQ004~008

Daikin Altherma - Low Temperature Split

4P313774-1 – 2012.05
7
M
21
16
M
14
d
e
Maximum
running
Wires current
2+GND or
(a)
3+GND
3
(c)
See table below. —
2 (e)
2 6.3 A
2 (f)
3
100 mA
4+GND
(c)
2+GND 13 A
2
(d)
2
(b)
3 or 4
100 mA
2 (b)
2
(b)
4
100 mA
Item
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
(e) Cable section 0.75 mm² till 1.25 mm²; maximum length: 50 m.
(f) Cable section 0.75 mm² till 1.25 mm²; maximum length: 500 m.
Backup heater
type
*3V
*9W
7

Installation

7.1

Opening the units

7.1.1 To open the outdoor unit

1 Remove 1 screw from the service cover.
(b)
2 Remove the service cover.
(b)
(b)
Description Wires
2
2 (per meter)
2
2
2
2
2 (per input
signal)
domestic hot water tank.
Voltage-free contact shall ensure the minimum applicable load of
15 V DC, 10 mA.
Applicable for both single user interface and dual use interface
connection.
Required number of
Power supply
1x 230 V 2+GND
1x 230 V 2+GND + 2 bridges
3x 230 V 3+GND + 1 bridge
3x 400 V 4+GND
2
1x
1
2
7 Installation
Maximum
running
current
(b)
(b)
(b)
(b)
(b)
(b)
(b)
conductors
Installer reference guide
26