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System Pressure
6 720 811 923 (2014/07)
If the boiler does not restart, contact Worcester, Bosch Group Appointments
team on: 0330 123 3366.
Contact your installer in order to find a permanent solution to the problem.
6 SYSTEM PRESSURE
6.1 SEALED HEATING SYSTEMS
This boiler is fitted to a sealed heating system which is pre-pressurised.
Your installer will advise you of the minimum and maximum pressure indicated on the
pressure gauge.
Check regularly that the pressure is maintained.
Fig. 9 Optimum pressure when the boiler is cold (area A)
Contact your installer or maintenance engineer if a permanent significant
decrease or increase in pressure is indicated on the pressure gauge.
The filling method will be an external filling loop, fitted valves and flexible hose.
NOTICE: To comply with the Water Authority regulations you must
disconnect the external filling loop after re-pressurisation.
6720643356-11.1Wo
2
3
1
04
bar
1
A
Min
1 bar
1.5 bar
Max
20


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