Internal Wiring - Parts Table - Daikin EKHBH054BA Manuel D'installation

Overview
The illustration below gives an overview of the required field wiring
between several parts of the installation. Refer also to "Typical
application examples" on page 4.
5
B D E
2
C
3
1 4
A 11 10
A Single power supply for
outdoor unit, backup
heater and booster
heater
B Outdoor unit
C Bottom plate heater
(a)
EKBPHT
D Backup heater
E Indoor unit
F Room thermostat
(optional)
(a) Bottom plate heater is only applicable in combination with ERLQ or in case of
optional EKBPHT kit.
Item Description
1 Power supply cable for outdoor
unit
2 Indoor unit power supply and
communication cable
3 Power cable for bottom plate
heater
4 Power supply cable for backup
heater
5 Room thermostat cable
6 3-way valve control cable
7 2-way valve control cable
8 Booster heater power supply
and thermal protection cable
9 Thermistor cable
10 Booster heater power supply
cable
11 Benefit kWh rate power supply
cable (voltage free contact)
12 User interface cable
(a) Refer to nameplate on outdoor unit.
2
(b) Cable section AWG13 (2.5 mm
(c) Minimum cable section AWG18 (0.75 mm
(d) See table under "Connection of the backup heater power supply" on page 18.
(e) Minimum cable section AWG18 (0.75 mm
(f) The thermistor and connection wire (39.4 ft)(12 m) are delivered with the
domestic hot water tank.
(g) Cable section AWG18 till AWG16 (0.75~1.25 mm
(50 m).
Voltage free contact shall ensure the minimum applicable load of 15 V DC,
10 mA.
(h) Cable section AWG18 till AWG16 (0.75~1.25 mm
(500 m).
EKHBH/X054BA
Indoor unit for air to water heat pump system
4PW54216-1
T
F
I
K
6
G
M
7
H
M
I
8
J
9
G 3-way valve for domestic
hot water tank (optional)
H 2-way valve for cooling
mode (field supply)
I Domestic hot water tank
(optional)
J Booster heater
(optional)
K User interface (digital
controller)
Required
number of Maximum
conductors running current
(a)
2+GND
(b)
3+GND
(c)
2
(d)
2+GND or
3+GND
(e)
3 or 4 100 mA
(e)
2+GND 100 mA
(e)
2+GND 100 mA
(b)
4+GND
(f)
2
2+GND 13 A
2 (g)
2 (h)
)
2
)
2
)
2
), maximum length: 164 ft
2
), maximum length: 1640 ft
CAUTION
Select all cables and wire sizes in accordance with
relevant local laws and regulations.
WARNING
After finishing the electric work, confirm that each electric
part and terminal inside the electric parts box is connected
securely.

Internal wiring - Parts table

Refer to the internal wiring diagram supplied with the unit (on the
inside of the indoor unit switch box cover). The abbreviations used
are listed below.
A1P ..................Main PCB
A2P ..................Digital controller PCB (user interface)
A3P ..........*......Thermostat (EKRTWA) (PC= internal Power Cicuit)
(optional)
A4P ..........*......Digital I/O PCB (EKRP1HB) (optional)
E1H ..................Backup heater element 1
E2H ..................Backup heater element 2
E4H ......... #......Booster heater (3 kW)
F1B,F3B...........Fuse backup heater
F2B ......... #......Fuse booster heater
F1T...................Thermal fuse backup heater (250 V, 201.2°F (94°C))
FU1 ..................Fuse 3.15 A T 250 V for PCB
FU2 ..................Fuse 5 A T 250 V
FU3 ..................Fuse 1 A T 250 V
FuR,FuS...........Fuse 5 A 250 V for digital I/O PCB
K1A~K4A .........Relays for valves and thermostat
K5A~K7A .........Relays for digital I/O PCB kit
K1M..................Contactor backup heater step 1
K2M..................Contactor backup heater step 2
K3M......... #......Contactor booster heater
K4M..................Pump relay
K5M,K6M .........Contactor for backup heater all pole disconnection
M1P..................Pump
M2S....... ##......2-way valve for cooling mode (field supply)
M3S......... #......3-way valve: floor heating/domestic hot water
PHC1 ...............Optocoupler input circuit
Q1DI.................Ground fault circuit interrupter (field supply)
Q1L ..................Thermal protector backup heater
Q2L,Q3L . #......Thermal protector booster heater
R1T ..........*......Ambient sensor (EKRTWA) (optional)
R1T ..................Outlet water heat exchanger thermistor
R2T ..................Outlet water backup heater thermistor
R3T ..................Refrigerant liquid side thermistor
R4T ..................Inlet water thermistor
R5T ......... #......Domestic hot water thermistor
S1L...................Flow switch
S1S ..................Solar pump station relay
S2S ..................Benefit kWh rate power supply contact
S3S ..................Dual set point 2 contact
S4S ..................Dual set point 1 contact
SS1 ..................DIP switch
TR1,TR2 ..........Transformer 24 V for PCB, for relays and valves
V1S ..................Spark suppression 1
V2S ..................Spark suppression 2
X1M~X9M ........Terminal blocks
* Optional
# Applications with domestic hot water tank only
## Heating/cooling applications only
Installation manual
17