11
SYSTEM PRESSURE
6 720 803 801 (2012/09)
4SYSTEM PRESSURE
4.1 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.
B Check regularly that the pressure is maintained.
Fig. 2 Optimum system pressure when your boiler is cold (area A)
B Contact your installer or maintenance engineer if a permanent significant decrease or increase in pressure is indicated on the
pressure gauge.
B Use the Worcester integral filling link to re-pressurise your boiler, refer to the following section 4.2.
NOTICE: To comply with the Water Authority regulations you must remove the “filling key” or disconnect the
external filling loop after re-pressurisation.
6720643356-11.1Wo
2
3
1
04
bar
A
Min
1 bar
1.5 bar
Max
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