Daikin EKCBH-BBV3 - Инструкция по эксплуатации - Страница 17

EKCBX/H008BBV3

Unit for air to water heat pump system

4PW66983-1C – 08.2011

Installation manual

15

NOTES

OUTDOOR UNIT ...................Outdoor unit

INDOOR UNIT .......................Indoor unit

HYDRO MODULE .................Hydro module

COMPRESSOR MODULE ....Compressor module

OPTION .................................Option

FIELD WIRING ......................Field wiring

PCB .......................................PCB

WIRE COLOUR .....................Wire colour

FIELD SUPPLY ......................Field supply

POWER SUPPLY ..................Power supply

(OUTDOOR) ..........................(Outdoor)

(DISCHARGE) .......................(Discharge)

(CONDENSOR) .....................(Condensor)

ONLY FOR *** OPTION .........Only for *** option

11.3. Overview of field wiring

Field wiring consists out of power supply (always including earth) and
indoor-outdoor communication (=transmission) wiring.

11.4. Requirements

The power supply must be protected with the required safety devices,
i.e. a main switch or other means for disconnections, a slow blow
fuse on each phase and an earth leakage protector.

Selection and sizing of the wiring should be done in accordance with
the applicable legislation based on the information mentioned in the
table below:

Table: Selection and sizing of wiring

Table: Power cable selection

(1)  European/International Technical Standard setting the limits for harmonic 

currents produced by equipment connected to public low-voltage systems 
with input current >16 A and 

≤

75 A per phase.

(2)  European/International Technical Standard setting the limits for voltage 

changes, voltage fluctuations and flicker in public low-voltage supply 
systems for equipment with rated current 

≤

75 A.

11.5. Routing

The outdoor unit has 2 openings at the
backside for field wiring intake. Use the
appropriate hole to route the power supply,
high voltage wiring and low voltage wiring
as shown in the figure.

Power supply routing (PS)

1.

Enter the power supply wire through the high voltage/power
supply (HV/PS) opening at the back of the outdoor unit.

2.

Route the power supply wire towards the switch box located at
the top of the outdoor unit.

3.

Secure the power supply wire with a cable tie around the frame
to keep it away from piping as shown in the figure above.

Control signal routing (HV)

1.

Enter the control signal wires through the high voltage/power
supply (HV/PS) opening at the back of the outdoor unit.

2.

Route the control signal wires towards the switch box located at
the top of the outdoor unit.

3.

Secure the control signal wires with a cable tie around the frame
to keep it away from piping as shown in the figure above. Keep a
distance of minimum 25 mm from the power supply wire.

1

THIS WIRING DIAGRAM ONLY APPLIES TO THE OUTDOOR UNIT

4

DO NOT OPERATE THE UNIT BY SHORT-CIRCUITING ANY 
PROTECTION DEVICE

NOTICE

The wiring diagram on the outdoor unit is only for the
outdoor unit.

For the indoor unit or optional electrical components, refer
to the wiring diagram of the indoor unit.

Item

Cable 

bundle

(a)

(a) PS = Power supply

HV = High voltage
LV = Low voltage

Description

Required 

number of 

conductors

Maximum running 
current

1

PS

Power supply

2 + GND

18 A

2

HV

Indoor unit control signals

3 + GND

Minimum cable 
section 2.5 mm

2

3

HV

Indoor unit pump and 
heater control signals

4

Minimum cable 
section 0.75 mm

2

4

LV

Thermistor interconnection 
cable (supplied with the 
outdoor unit)

8

Supplied with the 
outdoor unit

(b)

(b) If wiring is damaged, the cable shall be replaced by an original one.

Model

Nominal voltage

Maximum running 
current

Z

max

EBHQ+EKCB

(a)(b)

(a) Equipment complying with EN/IEC 61000-3-12

(1)

(b) This equipment complies with EN/IEC 61000-3-11

(2)

 provided that the system 

impedance Z

sys

 is less than or equal to Z

max

 at the interface point between the 

user's supply and the public system. It is the responsibility of the installer or user 
of the equipment to ensure, by consultation with the distribution network operator 
if necessary, that the equipment is connected only to a supply with a system 
impedance Z

sys

 less than or equal to Z

max

.

1x 230 V

18 A

0.42 

Ω

WARNING

■

It is important to keep the high voltage, low voltage
and power supply wiring separated from each other.
In order to avoid any electrical interference the
distance between both wiring should always be at
least 25 mm.

■

Make sure to secure the field wiring so it never comes
in contact with any piping.

LV

PS

HV

LV

PS HV

LV

LV

PS

PS

HV

HV

LV

PS

HV