Control Box; Preparation; Preparing Installation Site; Installation Site Requirements Of The Control Box - Daikin EKCB07CAV3 Installation Manual

3 Preparation
3

Preparation

3.1 Preparing installation site
3.1.1 Installation site requirements of the
control box
▪ Mind the measurement guidelines:
Maximum distance between control box and
outdoor unit
Maximum distance between control box and backup
heater kit
Maximum distance between control box and
domestic hot water tank
▪ Mind the following spacing installation guidelines:
50 50
(mm)
▪ The control box is designed to be wall­mounted in indoor locations
only. Make sure the installation surface is a flat and vertical non­
combustible wall.
▪ The control box is designed to operate in ambient temperatures
ranging from 5~35°C.
3.2 Preparing electrical wiring
3.2.1 Overview of electrical connections for
external and internal actuators
Item Description
Power supply
1 Power supply for
control box
Interconnection cable
2 Interconnection cable
between outdoor unit
and control box
User interface
3 User interface
Optional equipment
4 Preferential kWh rate
power supply (voltage­
free contact)
5 Backup heater kit
thermistor
6 Backup heater kit
thermal protector
7 Backup heater kit
connection (from
control box)
Installation manual
4
20 m
10 m
10 m
600
Wires Maximum
running
current
(a)
2+GND
(b)
2
(c)
2 100 mA
(d)
2
(e)
2
(e)
2
(e)
2 (3V3)
3 (6V3, 6W1,
9W1)
Item Description
8 3­way valve
9 Power supply for
booster heater and
thermal protection
(from control box)
10 Power supply for
booster heater (to
control box)
11 Domestic hot water
tank thermistor
12 Room thermostat
(a) Cable section 2.5 mm².
(b) Minimum cable section 0.75 mm²; maximum length: 20 m.
(c) Cable section 0.75 mm² till 1.25 mm²; maximum length:
500 m. Applicable for both single user interface and dual
use interface connection.
(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) Minimum cable section 0.75 mm²; maximum length: 10 m.
(f) The thermistor and connection wire (12 m) are delivered
with the domestic hot water tank.
NOTICE
More technical specifications of the different connections
are indicated on the inside of the control box.
4

Installation

4.1 Opening the units
4.1.1 To open the control box
2
1
2×
1
WARNING
The screws are delivered with toothed lock washers.
ALWAYS use toothed lock washers, also when the screws
need to be replaced. Failure to follow this warning may
result in electric shock.
Daikin Altherma low temperature monobloc control box
Wires Maximum
running
current
(f)
3
(a)
4+GND
2+GND 13 A
(f)
2
(e)
3 or 4 100 mA
EKCB07CAV3
4P404075­1 – 2015.03