System; Starting The Appliance; Control Panel Overview; Turn On The Appliance - Bosch Worcester Greenstar 8000 Series Installation And Maintenance Instructions Manual

Commissioning
▶ Manually vent all radiators, tighten when completed and check the
system for any leaks and correct if required.
▶ Top up the system pressure if the pressure drops below 1 bar.
▶ Isolate and remove filling loop connections to the system.
6.2.2 Adjusting the operating pressure of the heating system
Display on the pressure gauge
1 bar Minimum charge pressure (when system is cold)
1 - 1.5 bar Optimal charge pressure
3 bar Maximum charge pressure at maximum heating
water temperature must not be exceeded (pressure
relief valve opens).
Table 15
If the indicator is below 1 bar when the system is cold:
▶ Top up the water until the indicator is between 1 bar and 1.5 bar
again.
If pressure is not being maintained:
▶ Check tightness of expansion vessel and heating system.
6.3

Starting the appliance

NOTICE:
Damage to appliance or system!
Running the appliance:
▶ Never run the appliance when the appliance/system is empty or
partially filled.
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6.3.1

Control panel overview

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Fig. 61 Control panel
[1] Display
and keys: To navigate through menus and increase/decrease
[2]
settings
[3] d key: Return/back
[4] OK key: Save settings, Chimney sweeper key: press 5 seconds for
chimney sweeper mode
[5] Menu key
[6] Hot water key: Hot water mode on/off, adjusting the hot water
temperature (only available if the optional integral diverter valve
kit fitted)
[7] Heating key: Heating mode on/off, set the maximum flow
temperature
[8] Burner display: Illuminates when the burner is alight.
See the operating instructions for a description of the user menus.
6.3.2

Turn on the appliance

Set the language the first time the appliance is turned on.
▶ To scroll through the languages, press the  or the  key.
▶ To select the desired language, press the OK key.
When the display shows Siphon fill. prog., the siphon filling program is
active. The condensate siphon in the appliance is filled (
Chapter 6.3.3).
6.3.3

Siphon filling mode

The siphon filling mode is activated automatically or manually by the
installer on the appliance in the menu settings. The siphon filling mode is
activated in the service menu under > Settings > Special function >
Siphon fill mode.
While the siphon filling mode is active, access to the Hot water menu,
the Heating menu and the service menu is possible.
The siphon filling mode is activated automatically in the following cases:
• The appliance is switched on using the On/Off switch.
• The burner was not in use for at least 28 days.
• After conversion from summer to winter mode.
Greenstar 8000 Style – 6720883855 (2019/01)
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