EKCBX/H008BBV3
Unit for air to water heat pump system
4PW66983-1C – 08.2011
Installation manual
17
11.7. Indoor unit – Internal wiring – Parts table
Refer to the wiring diagram sticker on the top plate of the indoor unit.
The abbreviations used are listed below:
A1P...........................Main PCB
A2P...........................User interface PCB
A3P (EKRTW/R) .......Thermostat (PC = power circuit)
A3P (EKSR3PA) .......Solar pumpstation PCB
A4P (EKRPB1HB) ....Digital input/output PCB
A4P (EKRTR1) .........Receiver PCB
BSK (EKSR3PA).......Solar pumpstation relay
E4H...........................Booster heater
F2B ...........................Fuse booster heater
FU1...........................Fuse (T, 3.15 A, 250 V) for PCB
FU2...........................Fuse (T, 5 A, 250 V)
Fus,FuR ....................Fuse (5 A, 250 V) for digital input/output PCB
K3M ..........................Booster heater contactor
M2S ..........................2-way valve for cooling mode
M3S ..........................3-way valve floor heating/domestic hot water
PHC1 ........................Optocoupler input circuit
Q1DI,Q2DI................Earth leakage circuit breaker
Q2L...........................Thermostat protector booster heater
R1H (EKRTR1) .........Humidity sensor
R1T (EKRTW)...........Ambient sensor
R2T (EKRTETS) .......External sensor (floor or ambient)
R5T...........................Domestic hot water thermistor
S2S...........................Benefit kWh rate power supply contact
S3S...........................Dual set point 2 contact
S4S...........................Dual set point 1 contact
SS1...........................DIP switch
TR1...........................Transformer 24 V for PCB
V1S,V2S ...................Spark surpression 1, 2
X1M~X15M...............Terminal strips
X3Y,X6Y,X13Y ..........Connector
..................Field wiring
....................Terminal strip
....................Connector
............................Terminal
.............................Protective earth
BLK...........................Black
BLU...........................Blue
BRN ..........................Brown
GRN..........................Green
GRY ..........................Grey
ORG .........................Orange
PNK ..........................Pink
RED ..........................Red
VIO ...........................Violet
WHT .........................White
YLW ..........................Yellow
NOTES
WIRING DEPENDING ON MODEL
.............................................. Wiring depending on model
OPTION ................................ Option
PCB....................................... PCB
FIELD WIRING ..................... Field wiring
FIELD SUPPLY ..................... Field supply
WIRE COLOUR .................... Wire colour
POWER SUPPLY.................. Power supply
OUTDOOR UNIT .................. Outdoor unit
ONLY FOR *** OPTION ........ Only for *** option
POSITION OF PARTS .......... Position of parts
BACKUP HEATER KIT ......... Backup heater kit
See note................................ See note
Domestic hot water tank ....... Domestic hot water tank
User interface........................ User interface
Dual set point application (refer to installation manual)
.............................................. Dual set point application (refer to
installation manual)
3 wire type (SPST)................ 3 wire type (SPST)
NO valve ............................... Normal open (NO) valve
NC valve................................ Normal closed (NC) valve
Change over to boiler output
.............................................. Change over to boiler output
Alarm output ......................... Alarm output
Cooling/heating on/off output
.............................................. Cooling/heating on/off output
Solar input............................. Solar input
See note *** .......................... See note ***
1
THIS WIRING DIAGRAM ONLY APPLIES TO THE INDOOR UNIT
2
USE A DEDICATED POWER CIRCUIT FOR THE BOOSTER
HEATER.
NEVER USE A POWER CIRCUIT SHARED BY OTHER APPLIANCE.
3
NO/NC: NORMAL OPEN/NORMAL CLOSED
4
DO NOT OPERATE THE UNIT BY SHORT-CIRCUITING ANY
PROTECTION DEVICE
7
FOR EKHWSU*V3, REFER TO OPTION MANUAL.
8
FOR EKSOLHWAV1, REFER TO OPTION MANUAL.
9
MAXIMUM LOAD: 0.3 A - 250 V AC
MINIMUM LOAD: 20 mA - 5 V DC
10
230 VAC OUTPUT
MAXIMUM LOAD: 0.3 A
11
IN CASE NO *KHW* OPTION WITH BOOSTER HEATER IS
INSTALLED, CONNECT AN EXTRA EARTH
12
FOR BENEFIT kWh RATE POWER SUPPLY INSTALLATION: REFER
TO INSTALLATION MANUAL
⊗
SEVERAL WIRING POSSIBILITIES
