Power Supply - Rotex RHBH04CB3V Installer's Reference Manual

Electrical connection diagram
For more details, please check the unit wiring.

Power supply

1 Only for normal power supply installation
unit power supply: 400 V or 230 V + earth
1 Only for preferential kWh rate power supply installation
unit preferential kWh rate power supply
400 V or 230 V + earth:
normal kWh rate power supply for indoor unit: 230 V
2
Preferential kWh rate power supply contact
Field supply
2
Safety thermostat
backup heater power supply (3/6/9 kW): 400 V or 230 V + earth
Optional parts (*KHW*)
booster heater power supply (3 kW): 230 V + earth
Domestic hot
water tank
2way valve
Q*L
X5M
clixon
Booster heater
X6M
Q2L - clixon
booster heater
R5T - thermistor
water temperature
Q*L
X8M
clixon
solar pump
3way valve
M3S (when *KHW is installed)
selection domestic hot water-floor heating
Field supply
Power limitation
demand input 1
Power limitation
demand input 2
Power limitation
demand input 3
Power limitation
demand input 4
RRLQ004~008CA + RHBH/X04+08CB
ROTEX HPSU low temperature Bi‑bloc
4P384979-1C – 2017.04
Standard part
5 or 3 core
Outdoor unit
X1M: L1-L2-L3-N-earth
5 or 3 core
or L-N-earth
3 core Bottom plate heater
X1Y: 1-2
2 core
Only for *KBPHT*
X1M: 1-2-3 & depending on model
3 core 2 core
2x0.75
X1M: 1-2-3
4 or 3
core
A4P:Y2
X2M:29
X2M: 30-31
X5M: 3-4
3 core
F1B: L1-L2-L3
or L-N + earth
F2B: L-N + earth
ext. heat source output
2 core
X7M
F2B
230 V
Only for *KHWSU*V3
5 core
X4M: 1-2-earth
5Gx2.5
230 V
X2M: 13-14
X9A (PCB A1P)
signal
2 core
A4P: X4
X2M: 28
230 V
Only for *KSOLHWAV1
SPST:
230 V
X2M: 8-9-10 3
3
Only for *KRP1AHTA
2 core
A8P: X801M: 1-5
add: X2M: 1a-2a-3-4
230 V
2 core
3
A8P: X801M: 2-5
230 V
2 core
A8P: X801M: 3-5
230 V
2 core
A8P: X801M: 4-5
230 V
Notes:
- In case of signal cable: keep minimum distance to power cables > 5 cm
- Available heaters depending on model: see combination table
Field supply
Indoor Unit
Only for *KRP1HB* & *KSOLHWAV1
A4P: Y1
2 core
X2M: 28
Alarm output
230 V
A4P: Y3 Only for *KSR3PA option
2 core
X2M: 29
Solar input
230 V
A4P: X1-X2
2 core
Changeover to
signal
A4P: Y2
2 core
X2M: 29
Cooling/heating
230 V
On/OFF output
2 core
X2M: 34-35
230 V
2 core
NO valve: X2M: 6-7
NC valve: X2M: 5-7
230 V
2 core
X5M: 7-8
signal
2 core
X5M: 9-10
signal
Only for KRCS01-1 or EKRSCA1
2 core
X5M: 5-6
230 V
External room thermostat / Heat pump convector
(main and/or additional zone)
3 core for C/H operation
2 core for H only operation
main: X2M: 1-2-4
add: X2M: 1a-2a-4
230 V
5 core for C/H operation
4 core for H only operation
main: X2M: 1-2-3-4
230 V
main: X2M: 1-4
add: X2M: 1a-4 4 core
230 V
X2M: 32-33
2 core
2x0.75
X5M: 1-2
communication
2 core
2x0.75
communication
14 Technical data
alarm indication
BSK: 1-2 solar interlock
Ext. heat source (eg boiler)
Cooling/heating
On/OFF output
Circulation pump
for DHW
2way valve
M2S (*KHBX units)
for cooling mode
Electricity meter
pulse input 1
Electricity meter
pulse input 2
external thermistor
(indoor or outdoor)
Only for *KRTW
(wired room thermostat)
A3P: X1M: C-com-H
Only for *KRTR
2 core
(wireless room thermostat)
(3m included)
A4P: X1M: H-C-com
A3P: X1M: 1-3
X2M: L-N
signal
Only for
(heat pump convector)
X11M: 3-4-5-6
Standard part
A2P: P1-P2 user interface
Optional part
Only for *KRUCBL*
A2P: P1-P2 user interface
Installer reference guide
Optional part
Only for *KRTETS
R2T
External sensor
(floor or ambient)
4D090420 A
89