Function Check Menu; Reset Menu; Thermal Disinfection - Bosch Worcester Greenstar 8000 Series Installation And Maintenance Instructions Manual

Settings in the service menu
7.2.4

Function check menu

Menu item
Activate test
Burner
Ignition
Fan
Pump
Cyl. prim. pump
3-way valve
HC1 pump
DHW circ. pump
Ionisat.oscill.
Solar pump
Table 20 Function check menu
7.2.5

Reset menu

Menu item
Default setting
Fault history
Table 21 Reset menu
7.3

Thermal disinfection

To prevent hot water from becoming contaminated by bacteria such as
legionella, we recommend thermal disinfection after long downtimes.
CAUTION:
Risk of scalding.
During thermal disinfection, discharging unmixed hot water can cause
serious scalding.
▶ Only use the maximum adjustable hot water temperature for thermal
disinfection.
▶ Inform occupants of the premises of the risk of scalding.
▶ Perform thermal disinfection outside of the normal operating times.
▶ Do not discharge DHW unmixed.
Proper thermal disinfection involves the DHW system including the
draw-off points.
▶ Set the thermal disinfection in the hot water program of the heating
controller ( heating controller operating instructions).
▶ Close DHW draw-off points.
▶ Set any DHW circulation pump to continuous operation.
▶ Wait until the maximum temperature is reached.
54
Settings/adjustment range
• Off...100 %
• On
• Off
• On
• Off
• On
• Off
• On
• Off
• Hot water
• Heating
• On
• Off
• On
• Off
• On
• Off
• On
• Off
Settings/adjustment range
Restore?
Reset?
Comment/restriction
This service function enables testing of the burner.
Permanent ignition.
Test the ignition with permanent ignition without gas
supply.
▶ To prevent damages to the ignition transformer, never
leave this function on for longer than 2 minutes.
Permanent fan operation.
Fan operation without gas supply or ignition.
Permanent pump run (internal or external pumps).
Permanent pump run (hot water charge pump); only if
cylinder primary pump is installed.
Permanent position of the 3-way valve.
Permanent HK1 pump run (downstream the low loss
header).
Permanent hot water circulating pump run; only if hot
water circulation pump is installed.
Check the ionisation measurement function at the flame.
Permanent pump run (solar pump).
Comment/restriction
All settings of the heat source are reset to the respective
default setting. The system needs to be re-commissioned
following this reset.
Reset the maintenance first. The fault history of the heat
source is deleted. If currently a fault is present, it is
immediately entered again.
▶ Open all DHW draw-off points, from the nearest to the one furthest
away, and draw off hot water until hot water at a minimum of 70 °C
has flown from all draw-off points for at least 3 minutes.
▶ Restore the original settings.
Greenstar 8000 Style – 6720883855 (2019/01)