Settings Menu - Worcester Greenstar 4000 Installation And Maintenance Instructions Manual

7.2.3

Settings menu

The menu is adapted to your system automatically. Some menu items are
only available if the system has been set up accordingly. The menu items
are only displayed in systems in which the corresponding system
components are installed, e.g. Key Timer.
Menu item
Hydraulics
Low-loss header
DHW configuration
HC1 configuration
Pump config.
Heating
Max. heat output
Standby time
Anticyc. temp. off
Anticycle temp. on
Hot water
Turbine signal del.
DHW start del.
CH delay
Man. TD line
TD-Temperature
Max. TD duration
Pump
Pump range map
Greenstar 4000 – 6 720 891 161 (2020/09)
Settings/adjustment range
• Off
3-way valve installed
• No dedicated pump installed
• Heating pump
• 50 ...80%
• 3 ... 5 ... 60 min
• 2 ... 6 ... 15 K
• -15 ... -6 ... -2 K
• 0.50 ... 4.00 s
• 0 ... 50 s
• 0 ... 30 min
• Off
• On when DWH drawn
• 60...70 °C
• 10 ... 30 min
• 0: Pump output proportional to the heat
output
• 1: constant pressure 150 mbar
• 2: constant pressure 200 mbar
• 3: constant pressure 250 mbar
• 4: constant pressure 300 mbar
• 5: constant pressure 350 mbar
• 6: constant pressure 400 mbar
The factory settings are depicted as highlighted in the following table.
Remark/restriction
Not used
Not used
Maximum released heat output to central heating [%].
On natural gas devices:
▶ Measure the gas rate.
▶ Compare the measurement with the setting tables
( Chapter 13.6.1, page 89).
▶ Correct deviations.
The time interval specifies the minimum waiting time
between switching on the burner and switching it on
again in central heating mode.
The difference between the current flow temperature and
the set flow temperature until the burner is switched off.
The difference between the current flow temperature and
the set flow temperature until the burner is switched on.
The delay prevents sudden changes in the water supply
pressure from causing the burner to briefly operate
although no water is drawn off.
The delay concerns heating mode in systems in which the
DHW outlet of the solar-heated DHW cylinder is
connected to the cold water inlet of a combi boiler. DHW
heating by the combi boiler will be suppressed so that
solar system DHW will reach the DHW temperature
sensor earlier. This avoids unnecessary operation of the
combi boiler. Set the heating mode delay in accordance
with system conditions.
The heating mode is disabled for this period of time
following DHW heating.
Manual Thermal DisinfectionThis is not required for
combi boilers according to WRAS and Building
Regulations. However, the function is available. If used:
▶ Only draw off enough water to allow the DHW
temperature of 70 °C to be reached.
▶ Perform thermal disinfection
( Chapter 7.3, page 57).
▶ After completion of the thermal disinfection: switch
off the service function due to scalding risk.
Thermal Disinfection hot water temperature set point.
Duration of Thermal Disinfection mode.
▶ In order to save energy and to keep potential flow
noises to a minimum, set a low pump curve
( Chapter 13.5, page 89).
Settings in the service menu
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