Setting Comfort Mode Or Eco Mode; Setting Summer Mode; Manual Mode; Shutdown - Worcester Greenstar 1000 User Instructions

4.6.2

Setting comfort mode or ECO mode

In comfort mode, the appliance is continually maintained at the set
temperature. This means there will be a shorter delay i.e. when hot tap is
running. However, the appliance will use more gas in comfort (or pre-
heat) mode.
In ECO mode, heating up to the set temperature begins as soon as the hot
water tap has been opened.
▶ To set ECO mode: press eco until eco appears in the display.
▶ To return to comfort mode: press the eco key until eco vanishes from
the display.
With the boiler in DHW ECO mode it is possible to operate the Quick Tap
function, designed to save water:
▶ Fully open the hot water tap for at least 3 seconds.
▶ Turn the hot water tap to fully closed.
▶ Wait up to 30 seconds as the boiler continues to prepare hot water.
▶ Open the hot water tap.
Hot water is available.
▶ For more information on the Quick Tap function, see section 9,
page 15.
4.7

Setting summer mode

The heating pump and consequently the heating are switched off in
summer mode. The DHW supply and also the power supply for heating
controls and timer remain active.
To activate summer mode:
▶ Press the ( key.
▶ Keep pressing the arrow key  until
▶ Press the OK key to save. Otherwise the setting will be saved
automatically after 3 seconds.
] is permanently displayed.
Further notices can be found in the operating instructions for the heating
control.
4.8

Manual mode

Manual mode can be enabled to operate the boiler independent of
controls, should there be a technical issue with time and temperature
controls fitted.
To activate manual mode:
▶ Press and hold the ( key for 5 seconds.
▶ Check the flow temperature shown and adjust if necessary.
– The flow temperature will be shown in between two hyphens,
indicating manual mode.
Fig. 6 Manual mode shown on display
Manual mode should be used for a limited time only until the time and
temperature controls are fixed.
▶ To disable Manual Mode press and hold the ( key for 5 seconds.
Greenstar 1000 – 6721835944 (2023/08)
appears in the display.
0010034240-001
5

Shutdown

5.1

Setting frost protection

NOTICE
Risk of damage to the system from frost!
The heating system can freeze up after a prolonged period (e.g. during a
power failure, switching off the power supply, faulty fuel supply, boiler
fault etc.).
▶ Ensure that the heating system is in constant use (particularly when
there is a risk of frost).
If you are leaving your property unoccupied during cold weather, please
leave your external programmer on constant and your room thermostat
set to 12 °C.
6

Clearances and ventilation information

6.1

Appliance clearances

Your installer will have provided adequate space around the appliance
for operation, safety and servicing/maintenance access.
• The following detail the necessary clearance around the appliance for
service and maintenance.
WARNING
Risk of injury due to damage to the boiler
▶ Heat-producing kitchen appliances must not be operated directly
underneath the boiler.
CAUTION
Risk of damage to appliance or property
The appliance will overheat if the clearance space around the appliance
is restricted by objects.
▶ Do not restrict this space with the addition of cupboards, shelves etc.
next to or around the appliance.
▶ Do not store any combustible materials on or next to the appliance,
such as clothes, towels, paper or plastic bags.
Fig. 7 Appliance minimum clearances
Shutdown
0010042655-002
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