Settings in the service menu
55
Greenstar 4000 – 6 720 891 162 (2020/09)
Min. output
•
10
... 30 %
Pump output at minimum heat output. Only available with
pump map 0 (output-dependent control).
Max. output
• Min. output ...
100%
Pump output at maximum heat output. Only available
with pump characteristic map 0.
• Can only be reduced to value set in Min. output.
Pump overrun
• 1 ...
2
... 60 min, 24 h
Overrun time of the heating pump: pump overrun begins
when heat demand ends.
Special function
Ventilation func.
•
Off
• Auto
• On
The venting function can be switched on after
maintenance work.
During ventilation, the following appears in the info area
of the standard display
Ventilation func.
3-WV mid. pos.
•
No
• Yes
The function ensures that the system is fully drained and
that the motor can be easily removed. The 3-way valve
remains at the middle position for approx. 15 minutes.
Maintenance
Maintenance type
•
Without
(off)
– No reminder.
• Burner run time: 1000 ...
6000
h
– Service reminder based on the number of
hours the burner has been active, (1000
hours up to 6000 hours, default 6000
hours.
• Boiler run time: 1 ...
12
... 72 months
– Service reminder based no the number of
months the boiler has been operating, (1
month up to 72 months (6 years), default
12 months).
• Service date
1)
– Service reminder where a specific
calendar date can be selected.
• Landlord
– Operates in the same way as service date
with the additional option of reducing CH
and DHW comfort.
Landlord
:
This menu item allows a date to be set for annual service/
maintenance (End date). The service display appears as a
reminder 30 days before the scheduled date. A contact
telephone number (Installer tel. no.) is shown together
with service display. The tenant should call this number to
arrange a suitable maintenance date. A second reminder
appears at the scheduled date. If the service display is not
reset by the service engineer, the control unit limits the
functions 14 days after the scheduled date.
Reduced functions are set at Maint. reminder:
• DHW reduced: reduced comfort (max. 35 °C flow
temperature)
• Boiler off: central heating and hot water functions are
set off.
Limit values
Max. flow temp.
• 30 ...
82
°C
Limits the maximum flow temperature.
Max. DHW temp.
• 35 ...
60
°C
Limits the maximum domestic hot water temperature.
Min. boiler outp.
•
“Minimum rated output”
... increases up to
30%
Minimum heat output depending on code plug, Max =
30%.
Heating curve
Enable
• Yes
•
No
To turn this function on, when connecting a weather
sensor, select
Yes
to enable. The system control unit
optimises this setting. This service function activates a
simple, weather-compensated controller with a linear
heating curve. Depending on the on/off input, the heating
is switched on or off.
Htg. curve base
•
20
… 90 °C
This is only displayed if the heating curve has been
enabled. This can be used to set the flow temperature
base point of the heating curve, which corresponds to an
outside temperature of +20 °C.
Htg. curve end
• 20 ...
90
°C
This is only displayed if the heating curve has been
enabled. This can be used to set the flow temperature end
point of the heating curve, which corresponds to an
outside temperature of -10 °C.
Summer mode
• 0 ...
16
... 30 °C
This is only displayed if the heating curve has been
enabled. This can be used to set the outside temperature
threshold at which the heating system switches to
summer mode i.e. heating off.
Menu item
Settings/adjustment range
Comment/restriction
