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Installation
6720813171 (2016/05) 29
Connect the black pre-wired main appliance lead to a permanent live
supply (from the same fused isolator as all other controls on the
heating system), L N E.
Remove the grey cover of the 230 Volt converter [1].
Feed the 230 V switch live and neutral (from external controls)
through the cable gland.
Identify the 230 V terminal block by the hashed area and 230 VAC
warning triangle.
Connect the switch live to terminal “1” and a neutral to terminal “2”
[2].
Fig. 52 Connection box - 230 Volt connection
8.5.5 230 V connections (only for GB162-50/65)
Fig. 53 Terminal strip - external heating pump 230 V (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:
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
(accessory).
Proceed as follows:
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
230/230 V relay, which has to be installed by a registered installer/
electrician.
Connection to the free 230 VAC connection lead
Unwind the 230 VAC cable [1] and route it out of the boiler
( fig. 55).
Fig. 54 230 VAC cable of the pump
Cut the plug from the 230 VAC cable.
Connect the 230 VAC cable to the pump.
Fig. 55 Route the 230 VAC pump cable
WARNING:
This appliance must be earthed.
NOTICE:
Connect the 230 Volt converter (grey box) via the
pair of black low voltage cable to terminal WA.
( figure 48).
NOTICE:
Terminal 3 [2] is not used.
NOTICE:
The 230 V 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.
Observe the layout document and the installation
instructions of the control unit.
WARNING:
Do not connect a temperature controller to the 230 V
connections.
6 720 648 726-052.1TD
21
PK PS PZ
Mains
230 V
6 720 648 726-053.1TD
WARNING:
Damage to the installation by the boiler being
overloaded.
6 720 648 726-054.1TD
1
1
6 720 648 726-055.1TD
29


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