Starting The Appliance; Control Panel Overview; Turning On The Appliance; Chimney Sweep Mode - Worcester Greenstar 4000 Installation And Maintenance Instructions Manual

Commissioning
With the optional diverter kit fitted it is recommended that the mid
position of the 3-way valve is used to fill/drain the system.
For initial fill, the boiler automatically selects the mid-position when first
powered up.
For future fills to set the 3-way valve to mid position:
▶ Service menu > Settings > Special function > 3-WV mid. pos.>
Yes.
The 3-way valve remains at the middle position for approx. 15 minutes.
▶ Ensure that any external zone valves are open, if installed.
▶ Fill/drain the 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.
6.3.1

Control panel overview

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Fig. 63 Overview
[1] Burner display: Illuminates when the burner is alight.
[2] Display.
 and  buttons: To navigate through menus and increase/
[3]
decrease settings.
[4] d button: Return/back.
[5] ok button:
– Confirm/save settings.
– Chimney sweep button:
Press and hold for 5 seconds for chimney sweep mode.
– Toggle between Eco and preheat (comfort) mode.
[6] Menu button.
[7] Hot water button: Hot water mode home screen.
[8] Heating button: Heating mode home screen.
See the operating instructions for a description of the user menus.
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0010031533-001
6.3.2

Turning on the appliance

▶ Turn on the appliance at the power supply isolator.
6.3.3 Operation
Appliance operation
▶ Refer to Operating Instructions for full details on setting the CH flow
temperature, DHW temperature set point and the operating settings
menu information.
Temperature adjustment overview
Central heating flow temperature adjustment.
With underfloor heating systems observe the maximum permissible flow
temperature.
▶ Press the ( key.
The set maximum flow temperature appears.
▶ Press the  or  keys to set the desired maximum flow temperature.
▶ The setting is saved automatically after two seconds.
Then the symbol is briefly displayed.
Hot water temperature adjustment (only available when an optional
integral diverter valve kit is fitted).
▶ Press the * key.
The set hot water temperature appears.
▶ To set the desired hot water temperature, press the  or  keys.
The setting will be saved after 5s or after pressing the ok key.
6.4

Chimney sweep mode

You have 15 minutes to take your measurements or to make your
settings. After this time the appliance returns to normal operation.
You can re-enter chimney sweep mode if necessary.
When running in the chimney sweep mode, the appliance will operate
both the central heating and the domestic hot water circuits. This is to
allow sufficient time for this part of the commissioning procedure. It will
be necessary to run sufficient hot water through the domestic hot water
circuit to ensure that the appliance will not overheat whilst in chimney
sweep mode.
In chimney sweep mode the rated output of the appliance can be
selected.
▶ Press and hold the ok key for 5 seconds until Chimney sweep is
displayed.
▶ Confirm you have read and understood the alert message, press ok.
▶ Set the desired rated output using  or  for 100% and 10%
respectively.
The value is accepted after 2 seconds and marked with a tick.
▶ To exit the chimney sweep mode, press ok or d.
Adjustment with casing removed in chimney sweep mode
1. Set the chimney sweep mode and start up the appliance at maximum
rated output.
2. Set the chimney sweep mode and set the appliance at minimum rated
output.
Greenstar 4000 – 6 720 891 162 (2020/09)