Wiring Diagram: Indoor Unit - Rotex RHBH04CB Installation Manual

8.2

Wiring diagram: Indoor unit

See the internal wiring diagram supplied with the unit (on the inside of the indoor unit switch box cover). The abbreviations used are listed
below.
Notes to go through before starting the unit
English
Notes to go through before
starting the unit
X1M
X2M
X5M
X6M, X7M
X4M
15
**
/12.2
1
Backup heater configuration
(only for *9W)
3V3 (1N~, 230 V, 3 kW)
6V3 (1N~, 230 V, 6 kW)
6WN (3N~, 400 V, 6 kW)
9WN (3N~, 400 V, 9 kW)
6T1 (3~, 230 V, 6 kW)
User installed options
Bottom plate heater
Domestic hot water tank
Domestic hot water tank with
solar connection
Remote user interface
Ext. indoor thermistor
Ext outdoor thermistor
Digital I/O PCB
Demand PCB
Solar pump and control station
Main LWT
On/OFF thermostat (wired)
On/OFF thermostat (wireless)
Ext. thermistor
Heat pump convector
Add LWT
On/OFF thermostat (wired)
On/OFF thermostat (wireless)
Ext. thermistor
Heat pump convector
Position in switch box
English
Position in switch box
RHBH/X04~16CB
ROTEX HPSU low temperature Bi‑bloc
4P384978-1B – 2017.04
Translation
Notes to go through before
starting the unit
Main terminal
Field wiring terminal for AC
Field wiring terminal for DC
Backup heater terminal
Booster heater terminal
Earth wiring
Wire number 15
Field supply
Connection ** continues on page
12 column 2
Several wiring possibilities
Option
Not mounted in switch box
Wiring depending on model
PCB
Backup heater configuration
(only for *9W)
3V3 (1N~, 230 V, 3 kW)
6V3 (1N~, 230 V, 6 kW)
6WN (3N~, 400 V, 6 kW)
9WN (3N~, 400 V, 9 kW)
6T1 (3~, 230 V, 6 kW)
User installed options
Bottom plate heater
Domestic hot water tank
Domestic hot water tank with
solar connection
Remote user interface
External indoor thermistor
External outdoor thermistor
Digital I/O PCB
Demand PCB
Solar pump and control station
Main leaving water temperature
On/OFF thermostat (wired)
On/OFF thermostat (wireless)
External thermistor
Heat pump convector
Additional leaving water
temperature
On/OFF thermostat (wired)
On/OFF thermostat (wireless)
External thermistor
Heat pump convector
Translation
Position in switch box
Legend
A1P Main PCB
A2P User interface PCB
A3P * Solar pump station 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 Anode driver PCB
A8P * Demand PCB
B1L Flow sensor
BSK (A3P) * Solar pump station relay
DS1 (A8P) * DIP switch
E1A Electrical anode
E1H Backup heater element (1 kW)
E2H Backup heater element (2 kW)
E3H Backup heater element (3 kW)
E4H * Booster heater (3 kW)
F1B Overcurrent fuse backup heater
F2B * Overcurrent fuse booster heater
F1T Thermal fuse backup heater
F1U, F2U (A4P) * Fuse 5 A 250 V for digital I/O PCB
FU1 (A1P) Fuse T 6.3 A 250 V for PCB
K1M, K2M Contactor backup heater
K3M * Contactor booster heater
K5M Safety contactor backup heater (only for
*9W)
K*R (A1P, A4P) Relay on PCB
M1P Main supply pump
M2P # Domestic hot water pump
M2S # 2-way valve for cooling mode
M3S (*) 3-way valve for floor heating/domestic hot
water
PC (A4P) Power circuit
PHC1 (A4P) * Optocoupler input circuit
Q*DI # Earth leakage circuit breaker
Q1L Thermal protector backup heater
Q2L * Thermal protector booster heater
R1H (A3P) * Humidity sensor
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 Refrigerant liquid side thermistor
R4T Inlet water thermistor
R5T (*) Domestic hot water thermistor
R6T * External indoor or outdoor ambient
thermistor
S1S # Preferential kWh rate power supply contact
8 Technical data
Installation manual
23