Operating The Boiler; Switching The Boiler On/Off; Setting Central Heating Temperature - Worcester GREENSTAR HEATSLAVE II External 12/18 User Instructions
Floor standing oil fired condensing boiler conventional flue and room sealed flue
for sealed central heating systems with mains fed domestic hot water
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Using your boiler
Display symbols
Screen display
3.2
Operating the boiler
3.2.1 Switching the boiler on/off
▶ To switch on the boiler; turn on the water, oil and electricity
supply to the boiler.
▶ Check the programmer/timer is correct and is set to ON.
▶ Set the room thermostat to the desired temperature.
▶ Open and set thermostatic radiator valves as required.
▶ Turn the boiler water temperature control to the required
setting.
▶ To switch off the boiler; turn the programmer/timer to OFF
for heating and hot water.
3.2.2 Setting central heating temperature
1. Turn the central heating temperature control knob to the
desired flow temperature between 50 and 82°C, this will
be indicated on the digital display. This is not the room
temperature but the flow temperature through the
radiators.
6
All possible screen symbols (including
greyed out symbols)
Centigrade indication
°C
Weather Compensation
Description
Numerical display
Text display
Hot water
Central heating
Alert
Service mode
Confirmation
2. The radiator symbol will be displayed to confirm that the a
central heating setting is being changed.
3. The value is displayed during this process, press
exit or after five seconds of inactivity the boiler display will
return to the default screen.
Fig. 3
Greenstar Heatslave II External
Explanation
All possible screen symbols are displayed
briefly during start up. The greyed out
symbols are not required for the
operation of this appliance.
Displays a temperature setting or boiler
status code.
Displays ECO or Alert code
Displays during a hot water demand and
when the heat store is reheating.
Displays during central heating demand.
Displays during a fault condition with
diagnostic and status code.
Displays when in the service menus.
Displays next to temperature reading.
Confirms a manual change.
Displays only if Weather Compensation
sensor is fitted and is active.
ErP
– 6 720 813 722 (2014/09)
to
ok
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