Overview Of Field Wiring; Requirements; Routing; Power Supply Routing (Ps) - Daikin EKCBX008BBV3 Installation Manual

NOTES
1 THIS WIRING DIAGRAM ONLY APPLIES TO THE OUTDOOR UNIT
4 DO NOT OPERATE THE UNIT BY SHORT-CIRCUITING ANY
PROTECTION DEVICE
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
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.
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
Cable
(a)
Item bundle Description
1 PS Power supply
2 HV Indoor unit control signals
3 HV Indoor unit pump and
heater control signals
4 LV Thermistor interconnection
cable (supplied with the
outdoor unit)
(a) PS = Power supply
HV = High voltage
LV = Low voltage
(b) If wiring is damaged, the cable shall be replaced by an original one.
Table: Power cable selection
Model Nominal voltage
(a)(b)
EBHQ+EKCB 1x 230 V
(a) Equipment complying with EN/IEC
(b) This equipment complies with EN/IEC
impedance Z is less than or equal to Z
sys
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 less than or equal to Z
sys
(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.
EKCBX/H008BBV3
Unit for air to water heat pump system
4PW66983-1C – 08.2011
Required
number of Maximum running
conductors current
2 + GND 18 A
3 + GND Minimum cable
section 2.5 mm
4 Minimum cable
section 0.75 mm
8 Supplied with the
(b)
outdoor unit
Maximum running
current Z
max
0.42 Ω
18 A
61000-3-12(1)
61000-3-11(2) provided that the system
at the interface point between the
max
.
max

11.5. Routing

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.
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.
2

Control signal routing (HV)

2
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.
LV
LV LV LV
PS PS PS
HV HV HV
LV PS HV
HV
PS
Installation manual
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