Bosch Appliances 25Si SWITCHING THE BOILER ON/OFF Switching on, Switching off, Frost Protection

Min --- 40°C

1--- 47°C

2--- 53°C

3--- 61°C

4--- 68°C

5--- 74°C

6--- 80°C

Max --- 82°C

OPERATING THE 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.

USING YOUR BOILER

WORCESTER BOSCH GREENSTAR 25Si/30Si 8 716 115 169b (09/2008)

OPERATING THE BOILER 7