IN
S
TA
LL
AT
IO
N
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH
PRE-WIRED REMOTE 3 or 2 PORT VALVE
CONTROL SETS:
Key to components:
A - Double pole switched fused spur (positioned
in the boiler room next to the appliance)
B - REMOTE JUNCTION BOX (10-way) to connect
the following:
Mains wiring 230V 50Hz
Hot water tank thermostat
Room thermostat
System water valves
Circulating pump
External timer
C - BOILER CONTROL BOX TERMINAL
CONNECTOR BLOCK
Remote junction box (A) requirements:
this must be a terminal block type, current
rated to at least 5 amps
a 5 amp fuse must be fitted to the mains supply
the junction box (A) must be fitted externally
to the boiler
A frost thermostat can also be connected to the
remote juction box if required.
27
ELECTRICS
ELECTRICS
8-716-109-711a (04.05)
1 2 3
E
= EARTH
L
= LIVE
N
= NEUTRAL
A
C
B