Diverter Valve And Sensor Connections; Diverter Valve And Cylinder Thermostat Connections; Electrical; Internal Diverter Valve With A Vented Cylinder And Dhw Cylinder Sensor - Bosch Worcester 7 716 192 566 Installation Instructions Manual

ELECTRICAL

5.2

DIVERTER VALVE AND SENSOR CONNECTIONS

NOTICE: Cable routing:
▶ Do not route low voltage cables alongside mains
voltage cables.
This can cause interference on the low voltage cables.
1. Connect the cylinder temperature sensor (1) to the edge connector
ST15.
▶ Connect the Diverter valve motor harness to the Diverter valve motor
connection, refer to the circuit diagram in section 6.4.
If the ST15 connector and sensor is being used do not
connect ST8 as well.
The link is not required.
ST8
ST15
ST17
Fig. 16 Diverter motor and sensor connections
▶ Replace the control panel cover.
▶ Move the control panel to the up position and secure.
5.3 DIVERTER VALVE AND CYLINDER THERMOSTAT
CONNECTIONS
1. Connect the cylinder thermostat (1) to the connector ST8.
▶ Connect the Diverter valve motor harness to the Diverter valve motor
connection, refer to the circuit diagram in section 6.4.
If the ST8 and thermostat are being used do not use
ST15 as well.
The link is not required.
1
ST8
1.
ST15
ST17
Fig. 17 Diverter motor and thermostat connections
▶ Replace the control panel cover.
▶ Move the control panel to the up position and secure.
8
1.
1
6720645222-11.3Wo
6720645222-28.2Wo
6 ELECTRICAL
NOTICE: General information
▶ Mains supply to the boiler must be through a fused
double pole isolator situated adjacent to the
appliance. The isolator must have a contact
separation of 3mm minimum in both poles. External
fuse rating 3A.
▶ When stripping wires always ensure copper strands
do not fall into the control box.
▶ There should be no external wiring centre.
▶ A fascia mounted twin channel programmer must be
used. Timers available:
DT20 Twin Channel Programmer (7 716 192 038),
DT10RF Digistat (7 716 192 052),
DT10RF Optimiser (7 716 192 053)
DT20RF Digistat (7 716 192 054),
FR10 Intelligent room thermostat (7 716 192 065),
FR110 Programmable thermostat (7 716 192 066),
FW100 Weather compensation (7 716 192 067).
▶ If any of the programmers/timers listed above are
used, the room thermostat is incorporated in the
transmitter. Therefore keep link fitted across L
6.1 INTERNAL DIVERTER VALVE WITH A VENTED
CYLINDER AND DHW CYLINDER SENSOR
ACCESS TO ELECTRICAL CONNECTIONS:
Remove boiler casing to access control panel.
1. Unscrew the single screw and lower the control box into the horizontal
position.
2. Unscrew the three screws in the control panel and pull off the
connections cover.
3. 230V room thermostat with timer 7 716 192 038 (ST10):
▶ Remove link - L /L
S R
▶ Connect room stat LIVE supply to terminal (L
▶ Connect room stat LIVE return to terminal (L
▶ Connect room stat NEUTRAL to terminal (N
4. Hot water channel
– Cylinder sensor connects to ST15
5. Optional external frost stat connection (ST6):
▶ Connect frost stat wires to terminal (F
6. Diverter valve motor:
▶ Connect the Diverter valve motor harness to the Diverter valve motor
connection, refer to the circuit diagram in section 6.4.
brown
L
230V
green/yellow
MAINS E
blue
SUPPLY
N
Room
Thermostat
neutral
live
switched live
L L
N
R S
6720645222-29.1Wo
Fig. 18
i System Diverter Valve kit 6 720 645 222 (2012/09)
/L .
S R
)
S
)
R
)
S
) and (F )
S R
DT20 Twin Channel
Programmer
N L
Cylinder
S
temperature
sensor