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OPERATING THE BOILER
WORCESTER BOSCH GREENSTAR 25Si/30Si
8 716 115 169b (09/2008)
7
OPERATING THE BOILER
USING YOUR
BOILER
SWITCHING THE BOILER ON/OFF
Switching on
Switch on the boiler by pressing the
main power button.
The indicator light shows blue
Switching off
Switch off the boiler by pressing the
master switch.
The blue indicator light goes out.
SETTING THE TEMPERATURE
Turn the temperature control knob to
the desired level, approximate
temperatures for each setting are shown
in the table opposite.
When the burner is lit, the green
indicator light underneath the on/off
button is illuminated.
CONTROLLING CENTRAL HEATING
Set the timer to the correct time.
Set room thermostat to the desired
room temperature.
Set the thermostatic radiator valves to
the desired settings.
FROST PROTECTION
Leave master switch on.
Turn the temperature control to .
If the temperature falls to below 5°C
within the boiler it will periodically fire to
avoid the possibility of freezing.
If remote pipework is exposed to
low temperatures, ensure that the
installer has added a frost thermostat.
Min ---
40°C
1 ---
47°C
2 ---
53°C
3 ---
61°C
4 ---
68°C
5 ---
74°C
6 ---
80°C
Max ---
82°C