Connections (Only For Gb162-65) - Worcester GB162-65 Installation And Servicing Instruction

INSTALLATION
8.5.5 230 V CONNECTIONS (only for GB162-65)
NOTE:
The 230V connections can only be used with
a corresponding control unit. If you use
other than the GB162 pump group, you
must ensure that it correctly connects to the
terminal strip in fig. 53.
B Observe the layout document and the
installation instructions of the control
unit.
WARNING:
B Do not connect a temperature controller
to the 230V connections.
PK PS
Fig. 53 Terminal strip - external heating pump 230V
(connection colour green)
CONNECTING AN EXTERNAL BOILER PUMP -
GENERAL
Since the boiler has not been fitted with a pump, a pump
must be connected to the boiler.
When using a pump group with an integrated pump:
B Read the assembly instructions of the pump group for
the electrical pump connections.
If you do not make use of a pump group, you can connect
the external pump in 2 ways:
• to the unused 230 VAC pre-wired pump cable;
• to the green PK terminal of the boiler. To connect
order a PK plug (accesory).
Proceed as follows:
WARNING:
B Damage to the installation by the boiler
being overloaded.
The maximum electrical load that can be connected to
the free 230 VAC connection cable of the pump
( fig. 54, [1]) and to the green EP connector
( fig. 56) is 250 watts in total. If a load of more than
250 watts is to be connected, this is possible by using an
additional 230/230V relay, which has to be installed by a
registered installer/electrician.
36
Mains
PZ 230 V
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CONNECTION TO THE FREE 230 VAC CONNECTION
LEAD
B Unwind the 230 VAC cable [1] and route it out of the
boiler ( fig. 55).
Fig. 54 230 VAC cable of the pump
B Cut the plug from the 230 VAC cable.
B Connect the 230 VAC cable to the pump.
Fig. 55 Route the 230 VAC pump cable
CONNECTION TO THE TERMINAL STRIP OF THE
BOILER
B Connect the external pump, if available, (not the
pump of the pump group) to the green PK terminal.
The maximum allowed connected load of the pump =
250 Watts.
PK
Fig. 56 Terminal strip - external heating pump 230 V
(connection colour green)
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