Internal Wiring - Parts Table; System Overview Of Field Wiring - Daikin EKHBRD-AY1 Installation Manual

Internal wiring - Parts table

Refer to the internal wiring diagram supplied with the unit. The
abbreviations used are listed below.
switch box components list
A1P............................ Main PCB
A2P............................ Remote controller PCB (user interface)
A3P............................ Control PCB
A4P......................* .... Inverter PCB
A4P..................... # .... Inverter control PCB
A5P......................* .... QA PCB
A5P..................... # .... Inverter PCB
A6P............................ Filter PCB
A7P............................ Digital I/O PCB (optional)
A8P............................ Demand PCB (optional)
A10P.......................... Thermostat PCB (optional)
A11P.......................... Receiver PCB (optional)
B1PH ......................... High pressure sensor
B1PL.......................... Low pressure sensor
BS1~BS4 (A4P).. # .... Push button
BS1~BS4 (A9P)...* .... Push button
C1 ........................* .... Capacitor
C1,C2 ................. # .... Filter capacitor
C1,C2 (A5P) ....... # .... PCB capacitor
C1~C3 (A4P) .......* .... PCB capacitor
C2,C3 ..................* .... Filter capacitor
DS1 (A*P) .................. Dipswitch
E7H............................ Bottom plate heater (only in combination with
ERRQ* outdoor unit or ERSQ* outdoor unit
with option EKBPHTH16A)
E1HC ......................... Crankcase heater
F1,F2 .................. # .... Inline fuse
F1U (A1P,A3P) .......... Fuse (T, 3.15 A, 250 V)
F1U (A6P)............* .... Fuse (T, 6.3 A, 250 V)
F1U,F2U (A4P) ... # .... Fuse (31.5 A, 500 V)
F1U,F2U (A7P) .......... Fuse (5 A, 250 V) (optional)
F3U,F4U ..............* .... Fuse (T, 6.3 A, 250 V)
F3U,F6U (A4P) ... # .... Fuse (6.3 A, 250 V)
H1P~H7P (A4P) . # .... PCB LED
H1P~H7P (A9P) ..* .... PCB LED
HAP (A*P).................. PCB LED
IPM1 ....................* .... Integrated power module
K1A............................ Interface relay
K1E,K2E .................... Electronic expansion valve
K1M,K2M............ # .... PCB contactor
K*R (A*P)................... PCB relay
K1S............................ 3-way valve (optional)
K2S............................ 2-way valve
M1C ........................... Compressor
M1F,M2F.................... Switch box cooling fan
M1P ........................... DC inverter pump
PC (A11P) ................. Power circuit (optional)
PHC1 ......................... Optocoupler input circuit
PS (A*P) .................... Switching power supply
Q1DI,Q2DI................. Earth leakage protector (field supply)
Q2L............................ Thermal protector water piping
R1 (A5P)............. # .... Resistance
R1,R2 (A4P) ........* .... Resistance
R1L ......................* .... Reactor
R1L~R3L ............ # .... Reactor
R1H (EKRTR) ............ Humidity sensor (optional)
R1T (EKRTW/R) ........ Ambient sensor (optional)
R2T (EKHTS*) ........... Domestic hot water tank thermistor (optional)
R2T (EKRTETS*)....... External sensor (floor or ambient) (optional)
R3T............................ Liquid thermistor R410A
EKHBRD011~016AAV1+Y1
Indoor unit for air to water heat pump system
4PW54465-1C
R4T ............................Returning water thermistor
R5T ............................Leaving water thermistor
R6T ............................Discharge thermistor
R7T ............................Liquid thermistor R134a
R8T ............................Fin thermistor
RC (A*P) ....................Receiver circuit
S1PH..........................High pressure switch
S1S ............................Benefit kWh rate power supply contact (field
supply)
S3S ............................Mixing station input 1 (field supply)
S4S ............................Mixing station input 2 (field supply)
SS1 (A1P) ..................Selector switch (emergency)
SS1 (A2P) ..................Selector switch (master/slave)
SS1 (A7P) ..................Selector switch (optional)
TC (A*P).....................Transmitter circuit
T1R,T2R (A*P)...........Diode bridge
T3R ..................... * ....Power module
V1C~V8C............ * ....Ferrite core noise filter
V1C~V12C..........# ....Ferrite core noise filter
X1M~X3M ..................Terminal block
X1Y~X4Y ...................Connector
X*M (A*P)...................Terminal block on PCB (optional)
Y1R ............................4-way valve
Z1F~Z5F (A*P) ..........Noise filter
* V1 models only
# Y1 models only
System overview of field wiring
Most field wiring on the indoor unit side is to be made on the
terminal block inside the switch box. To gain access to the
terminal blocks, remove switch box service panel. Refer to the
unit switch box cover for instructions how to remove this panel
and gain access to the inside of the switch box.
Cable tie mountings are provided at the wiring entries of the
switch box. See "Switch box main components" on page
NOTE The electrical connection diagram can be found
on the inside of the switch box cover.
Install the indoor and outdoor unit, power supply
cable and communication cable(s) at least 1
meter away from televisions or radios to prevent
image interference or noise.
(Depending on the radio waves, a distance of 1
meter may not be sufficient to eliminate the
noise.)
7.
Installation manual
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