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Worcester-Bosch Greenstar 8000 Style System - GR8700iW Manual

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Operating the appliance
Greenstar 8000 Style – 6720883869 (2021/05)
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3.3 Topping up the system pressure
External filling loop
Once the external filling loop and pressure display has been located,
follow the instructions for re-pressurising the system.
▶ Unscrew the blanking cap [1].
▶ Attach the hose [2] to the valve.
– Usually one end of the hose is already connected to one of the
system fill isolation valves.
▶ Ensure both ends [3] of the hose are screwed on hand tight.
▶ Monitor the pressure display.
– The system fill isolation valves [4] are in a closed position (the
handle/screwdriver slot is across the valve).
▶ Turn the handle/screwdriver slot through 90° to open valves and
slowly fill the system.
– The system fill isolation valves [5] are opened (the handle/
screwdriver slot is in-line with the valve).
– The pressure indicator on the pressure bars will start to move
towards the green bar.
▶ Set the pressure between 1 and 1.5 bar pressure.
Pressure indicator is on the green bar.
▶ Turn the handles/screwdriver slots back, through 90°, to close the
valves.
– The system fill isolation valves [6] are in a closed position (the
handle/screwdriver slot is across the valve).
▶ Top up the system pressure, if as a result of the air bleeding the
pressure drops off.
Once the pressure has settled between 1 and 1.5 bar.
▶ Ensure the valves are closed.
▶ Remove the hose [2] and replace the blanking cap [1].
Fig. 3
If the indicator is on the right hand side red pressure zone as a result of
over filling:
▶ Bleed one radiator until the pressure indicator returns to the green
bar.
4 Operating the appliance
4.1 Display overview
Fig. 4 Control Panel
[1] Display
[2] and keys
[3] Heating water pressure display
[4] d key
[5] OK key
[6] Menu key
[7] DHW key
[8] Heat key
[9] Burner display
4.2 Symbols in the display
0010022967-001
1
2
3
4
5
6
Min Max
Symbol Explanation
Connection with the Wi-Fi network (only available with
accessories)
Connection with RF transmitter, e.g. Comfort+ II RF room
thermostat (only available with Key accessories)
Central heating adjustment
auto: Heating is switched on and off according to
programmed times for heating .
Advance: Move to the next on or off time and directly
switch on or off heating.
Central heating off
Hot water adjustment (only available with optional integral
diverter valve kit)
Hot water off
Displays with the appliance status code and diagnostic
code during a fault condition.
Holiday symbol
Cleaning mode to enables the boiler to be cleaned without
making changes to the touch panel.
Central heating or hot water can be switched either
permanently on or off.
Energy consumption1)
0010033251-001
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2
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