System Pressure; Sealed Heating Systems - Bosch Worcester Greenstar 27i System Compact User Instructions

SYSTEM PRESSURE

4 SYSTEM 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.
▶ Check regularly that the pressure is maintained.
Fig. 9 Optimum system pressure when your 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 Water Authority regulations you must disconnect the external filling loop after re-
pressurisation.
14
1.5 bar
A
1 bar
1 1
Min
0
Max
2
3
4
bar
Greenstar i System Compact – 6 720 807 727 (2013/05)