14.6 Wiring diagram
14.6.2 Wiring diagram: Indoor unit
1 3 A8P
1 2 3 4
X5Y
DS1 A6P
X10A X10A
X5M
X1A
K2M
K3M K3M
K2M
M1S
X10A
X14A
X5M
X1Y X2Y
X3Y X4Y
X4Y
X4Y X24A.7
R3T -t°
R4T -t°
R5T -t°
R2T -t°
A1P X5A
1 2 X6A
1 2 X7A
1 2 X8A
1 2 X9A
1 2 X4A
1 2 3 4 2
X40A
1 3 4 5 6 7 8
3 2 1
X85A 4 5 6
3 2 1 X33A
4 5 6 R1T
-t°
S1S S2S S3S B1L
4 3 7 8 9 10
3 2 1
4 5 1
2 3
2 1
4 5
NO BLK
NCBRN N BLU
X24A.5
A4P
5 6 4 3 1 2
OFFON1 CN2
CN1
F1U F2U
SS1
PHC1
Y4 Y2
Y1 Y3
YC X4
X1 X2 X3
KFR
KCR KHRKHUR
F2U
X2A
X1A X13A X4A
PE
GND PWM
N L
GND PWM
N L PE
M3P MS3~
M1P MS3~
X80A
X801M OFFON DS1
Q3L 11
12 11 12 ON
OFF 8 7 6 5 4 3 2 1
A5P
3 2 1
X3A
4 5 6 7
8 R7T
-t°
S6S S7S S8S S9S 1 2 3 4 5 10 11 12 9 8 7 6 5 4 3 2 1
+12V
F1U
1 2 3 1 2 3 4 5
GND
7 6 5 4 3 2 1 6 5 4 3 2 1
21 X2M
28 29 X2M.8
A4P.Y2
X2M.29
21 X2M
28 29 X2M.8
4 4
1 2
3 2 1
1
5 1
5 4
3 4
3
X1Y L N
1 2
A4P.YC A4P.Y2
4D092009-1B_page 4
Power limitation digital inputs:
12 V DC / 12 mA detection (voltage supplied by PCB)
Space C/H On/OFF output Max. load 0.3 A - 250 V AC Min. load 20 mA - 5 V DC Demand PCB
Electric pulse meter inputs:
5 V DC pulse detection (voltage supplied by PCB)
Alarm output Max. load 0.3 A - 250 V AC Min. load 20 mA - 5 V DC Digital I/O PCB
Switch box Preferential kWh rate power supply contact: 16 V DC detection (voltage supplied by PCB)
only if no EKBPHT*
only for EKBPHT*
Options: bottom plate heater OR On/OFF output Only for digital I/O PCB option
Switch box
Safety thermostat
Options: boiler output, alarm output
to bottom plate heater
Only for demand PCB option
Ext. heat source Max. load 0.3 A - 250 V AC Min. load 20 mA - 5 V DC
OUTDOOR UNIT
4D092009-1C_page 5
EHV*
5 6
1 1
R1T -t°
A3P CCOMH
A3P
R1T -t°
CCOMH
R1H R1H
R1T -t°
R1T
X1M -t° X1M
%H20 %H20
H CCOM L N HCCOM LN
PC PC
A4P A4P
A3P A3P
X2M.1 X2M.2 X2M.3 X2M.4 X2M.1a X2M.2a X2M.3 X2M.4
1 3 5 7
1 3 5 7 1
2 1a 2a 3 4
X1A.1 X1A.3
1 2 1 3 1 3 1 3
1
3 1 3 5
1 2 3
1 2 3X1M X1M
X6YA X6Y X6YB
X6Y X6YB
X1M X1M
X2M 31 30
30 31X2M Q2DI
(SPST)
P1P2 P1P2
R6T -t°
-t°
R1T -t°
R1T A2P
A2P 21
X17A X1A X19A X26A X31A
X2M X3A X11A
FU1
KPR FU2
3 5 X16A
1
1 3 5
1 3 5 1 2 1 3 1 1 2
X20A
X2A X28A X15A X18A X22A
KCR KVR
K6R
X2M X5M X5M
M2P M
1~
35
34 12 56
NOBLK NC BRN
N BLU M3S
4 2
1
2 3
4 12
11 22
21 K1M
Q1L A2
A1 32
31 K1M TR1
Q1L
A1P
K1R
F1B
Q1DI
PE
I I
A3P A3P
X2M.4 X2M.1a X2M.4
X2M.1
R2T -t°
R2T -t°
4
X11M3 5 6 X11M345 6
5 6
3
3 M2S
M2S
X2M.5 X2M.7
X2M5 6 788a 9 1028 29 X2M.21 X24A
2
L N
X6YA123 123
N L
5 6
3 1
F1T E3H
X1HA 1X1H
2 3
X2M.2 X2M.4 X2M.1 X2M.2a X2M.4 X2M.1a
only for wired On/OFF thermostat only for wired
On/OFF thermostat
only for wireless On/OFF thermostat only for wireless
On/OFF thermostat
Add LWT zone Heatpump convector Main LWT zone
Heatpump convector
Switch box
User interface ext. ambient sensor option (indoor or outdoor) Remote
user interface DHW pump output
Max. load:
2 A (inrush) - 230 V AC 1 A (continuous) DHW pump 3 wire type
Shut-off valve
Switch box OUTDOOR
UNIT Only for preferential kWh rate power supply (outdoor) Use normal kWh rate power supply for indoor unit
Only for normal power supply (standard) Indoor unit supplied from outdoor
OUTDOOR UNIT
1N~, 50 Hz 230 V AC
only for ext.
sensor (floor or ambient) only for ext.
sensor (floor or ambient)
NO valve
NC valve 1N~, 50 Hz
230 V AC Normal kWh rate power supply
only for
A1P Main PCB
A2P User interface PCB
A3P * On/OFF thermostat (PC=power circuit)
A3P * Heat pump convector
A4P * Digital I/O PCB
A4P * Receiver PCB (Wireless On/OFF
thermostat)
A5P Bizone PCB
A6P Current loop PCB
A8P * Demand PCB
B1L Flow sensor
DS1 (A5P) * DIP switch DS1 (A8P) * DIP switch
E3H Backup heater element (3 kW)
F1B Overcurrent fuse backup heater
F1T Thermal fuse backup heater
F1U (A4P) * Fuse 5 A 250 V for digital I/O PCB F2U (A4P) * Fuse 5 A 250 V for digital I/O PCB F1U (A5P) Fuse T 2 A 250 V for PCB F2U (A5P) Fuse T 2 A 250 V for PCB FU1 (A1P) Fuse T 6.3 A 250 V for PCB FU2 (A1P) Fuse T 6.3 A 250 V for PCB
K1M Contactor backup heater
K2M Relay 3-way valve bypass
K3M Relay 3-way valve flow
K*R Relay on PCB
M1P Additional zone pump
M2P # Domestic hot water pump
M3P Main zone pump
M1S Mixing 3-way valve
M2S # 2-way valve for cooling mode
M3S 3-way valve for space heating/domestic hot water
PHC1 * Optocoupler input circuit Q1DI, Q2DI # Earth leakage circuit breaker
Q1L Thermal protector backup heater
Q3L # Safety thermostat
R1T (A1P) Outlet water heat exchanger thermistor R1T (A2P) Ambient sensor user interface R1T (A3P) * Ambient sensor On/OFF thermostat R2T (A1P) Outlet backup heater thermistor R2T (A3P) * External sensor (floor or ambient) R3T (A1P) Refrigerant liquid side thermistor R4T (A1P) Inlet water thermistor
R5T (A1P) Domestic hot water thermistor R6T (A1P) * External indoor or outdoor ambient
thermistor
R7T (A5P) Mixed leaving water thermistor R1H (A3P) * Humidity sensor
S1S # Preferential kWh rate power supply contact S2S # Electrical meter pulse input 1
S3S # Electrical meter pulse input 2 S6S~S9S # Digital power limitation inputs SS1 (A4P) * Selector switch
TR1 Power supply transformer
X1H Connector
X*M Terminal strip
X*Y Connector
* = Optional
# = Field supply
BLK Black
BRN Brown
GRY Grey
RED Red
Notes to go through before starting the unit
English Translation
X1M Main terminal
X2M Field wiring terminal for AC
X5M Field wiring terminal for DC
Earth wiring
15 Wire number 15
Field supply
**
/12.2 Connection ** continues on page 12 column 21 Several wiring possibilities
Option
Not mounted in switch box Wiring depending on model PCB
Electrical connection diagram
For more details, please check the unit wiring.
4D096036-1
A4P: Y1 X2M: 29 A4P:Y2
X2M:29 X1M: 1-2-3
X2M: 30-31 X5M: 3-4
X5M: 11-12
A8P: X801M: 1-5 A8P: X801M: 2-5 A8P: X801M: 3-5 A8P: X801M: 4-5
A4P: X1-X2 X1Y: 1-2 X1M: 1-2-3
230 V
230 V
230 V
A3P: X1M: C-com-H
A4P: X1M: H-C-com
X2M: L-N A3P: X1M: 1-3
X11M : 5-6 X2M: 34-35
X5M: 5-6 X5M: 7-8 X5M: 9-10 A4P: Y2 X2M: 29
2
2
2 1
1
2x0.75
X5M: 1-2 2x0.75
Power limitation demand input 1 Safety thermostat Field supply
Field supply
Power supply Standard part
Outdoor unit
In case of signal cable: keep minimum distance to power cables >5 cm
External room thermostat / Heat pump convector
(main and/or additional zone) Optional part
Note
Only for *KBPHT*
& depending on model Bottom plate heater X1M: L1-L2-L3-N-earth
or L-N-earthv
Field supply
2 core
F1B: L-N + earth
Alarm output
Changeover to ext. heat source output Cooling/heating On/OFF output
Cooling/heating On/OFF output
signal
2 core signal
2 core signal 2 core signal
2 core
2 core
2 core signal 2 core 2 core
2x0.75 3 core
230 V
2 core 230 V
2 core 230 V 2 core 230 V
2 core signal 2 core signal 2 core signal 2 core signal Power limitation
demand input 2 Power limitation demand input 3 Power limitation demand input 4
Only for *KRP1HB*
Cooling/heating On/OFF output Ext. heat source (eg boiler) alarm indication
NC valve: X2M: 5-7 NO valve: X2M: 6-7
Electricity meter pulse input 2 Electricity meter pulse input 1 M2S (*KHBX units) for cooling mode
external thermistor (indoor or outdoor)
Only for *KRTW (wired room thermostat) 2 core for H only operation
3 core for C/H operation
4 core for H only operation 5 core for C/H operation
Standard part
Optional part Only for
(heat pump convector) Only for *KRTR
(wireless room thermostat) 2 core (3m included)
signal
Only for
*KRTETS
Only for *KRUCBL*
Circulation pump for DHW
main: X2M: 1-2-4 add: X2M: 1a-2a-4 unit preferential kWh rate power supply:
400 V or 230 V + earth
Only for preferential kWh rate power supply installation
unit power supply: 400 V or 230 V + earth
Only for normal power supply installation
normal kWh rate power supply for indoor unit: 230 V
Preferential kWh rate power supply contact
backup heater power supply (3 kW): 230 V + earth 5 or 3 core 5 or 3 core
2 core 2 core
3 core
R2TExternal sensor (floor or ambient)
Indoor unit
2 core 2x0.75 communication Only for
*KRP1AHTA
2-way valve
Only for KRCS01-1 or EKRSCA1
A2P: P1-P2 user interface communication A2P: P1-P2 user interface main: X2M: 1-2-3-4
add: X2M: 1a-2a-3-4
main: X2M: 1-4 add: X2M: 1a-4
Electrical meter specification
• Pulse meter type/voltage-free contact for 5 V DC detection by PCB.
• Possible numbers of pulses
• 0.1 pulse/kWh
• 1 pulse/kWh
• 10 pulse/kWh
• 100 pulse/kWh
• 1000 pulse/kWh
• Pulse duration
• minimum On time: 40 ms
• minimum OFF time: 100 ms
• Measurement type (depending on installation)
• Single phase AC meter
• Three phase AC meter: balanced loads
• Three phase AC meter: unbalanced loads Electrical meter installation guideline
It is the responsibility of the installer to cover the complete power consumption with electrical meters (combination of estimation and metering is NOT allowed).
Required number of electrical meters.
Outdoor unit type ERLQ004~008CAV3 ERHQ011~016BAV3
ERLQ011~016CAV3
ERHQ011~016BAW1 ERLQ011~016CAW1
Indoor unit type EHVZ04+08 EHVZ16
Backup heater type 3V
Backup heater power supply 1~ 230 V
Backup heater configuration 3 kW
Normal kWh rate power supply
Electrical meter type 1~ 1 1 1 / —
3~ balanced — — 1 / —
3~ unbalanced — — 1 / —
Preferential kWh rate power supply
Electrical meter type 1~ 2 2 1
3~ unbalanced — — 1