Rotex HPSU compact (V5) Installation And Maintenance Manual page 37

4 x Set-up and installation
Short
designation
External unit for heat pump
RRLQ
Heat pump indoor unit
3-way diverter valve (internal heat generation cir-
3UVB1
cuit)
3UV DHW 3 way diverter valve (hot water/heating)
A1P Circuit board (basic control of the heat pump)
X1A Plug connection to TRA1
X2A Plug connection to J3 from RTX AL4
X3A Plug connection internal cabling (strapping plug)
X4A Plug connection to J3 from RTX-AL4
X5A Plug connection flow temperature sensor t
Flow temperature sensor plug connection
X6A
t
V, BH
Plug connection temperature sensor
X7A
(fluid-side refrigerant) t
Return flow temperature sensor plug
X8A
connection t
R2
Storage tank temperature sensor plug
X9A
connection t
DHW2
X18A Plug connection to J3 from RTX-AL4
X19A Plug connection to XAG1 + J10 from RoCon BM1
X21A Plug connection internal cabling (strapping plug)
AUX Outputs switch contacts (A-A1-A2) + (B-B1)
BUxx Backup heater
DS Pressure sensor
EBA Switching contact for external demand signal
Switching contact for external operating mode
EXT
switching
F1 Fuse 250 V T 2 A (RoCon BM1)
Tab. 4-3 Key names for connections and circuit diagrams - Part 1
38
Key names
Explanation
V2
L2
Short
designation
FU1 Fuse 250 V T 3,15 A (A1P)
FLS Flow sensor (t
Connecting cable between HPSU compact (with
HPc-VK-1
cooling function) and HP convector
Switching contact for reduced-tariff mains connec-
HT/NT
tion
P Heat circulation pump (device-internal)
P Circulation pump
Z
PWM Pump connection (PWM signal)
Plug connection (Rocon BM1) internal cabling (to
RJ45 CAN
RoCon B1)
RoCon B1 Operating section of the controller
RoCon BM1 Circuit board (basic control model)
J1 Plug connection for heat circulation pump P
J2 Plug connection 3UVB1
J3 Plug connection AUX switching contacts
J4 Plug connection - Not occupied
J5 Plug connection pressure sensor
J6 Plug connection mains voltage
Plug connection PWM - Signal for heat circulation
J7
pump P
Plug connection EXT
Plug connection EBA
Plug connection Smart Grid switch contact EVU
J8
Plug connection exterior temperature sensor t
Storage tank temperature sensor plug connection
t
DHW1
Plug connection HT/NT switching contact EVU
FA ROTEX HPSU compact (V5) •
Explanation
/ V1)
R1
AU