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Worcester-Bosch Greenstar Highflow CDi 2016-2023 Manual

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System pressure
Greenstar Highflow CDi ErP– 6 720 818 076 (2015/12)
4System pressure
4.1 Sealed heating systems
This boiler is fitted to a sealed heating system which will have
been pressurised by your installer. Your installer will advise you
of the minimum and maximum pressure indicated on the
pressure gauge.
▶ Check regularly that the pressure is maintained.
▶ If the pressure gauge reads less than 1 bar then the system
requires re-charging.
▶ Contact your installer or maintenance engineer, such as a
Gas Safe registered engineer, if a permanent significant
decrease or increase in pressure is indicated on the
pressure gauge.
The filling method is an integral filling loop fitted with non-
return valves and flexible hose.
4.2 Locating the integral filling link
To access the filling loop connection:
1. Pull the upper edges of the front panel forwards.
2. Lift front panel.
Using the filling loop:
3. Unscrew the tank drain cap from the Tank drain valve.
4. Connect the integral filling loop from the Flow valve [1]
using the hose [2] to the Tank drain valve [3].
5. Open the flow and tank drain valves.
▶ Fill the system to a pressure up to 1.5 bar.
▶ Close the flow valve.
▶ Close the tank drain valve.
▶ Disconnect the integral filling loop.
▶ Refit tank drain cap.
Fig. 5 Integral filling loop
6720806267-08.1Wo
1
2
3
1
2
3
P
Min
1 bar
1.5 bar
Max
1.
2.
3.
4.
5.
1.
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