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Manafacture: Bosch File size: 966.55 kb File name: Language of manual:

SETTING THE CENTRAL HEATING TEMPERATURE B Turn the central heating temperature control to the desired level, between 40 °C and 90 °C. B When the burner is lit, the green indicator light underneath the on/off switch is illuminated. CONTROLLING CENTRAL HEATING B Set the timer to the correct time. B Set room thermostat to the desired room temperature. B Set the thermostatic radiator valves to the desired settings. USING YOUR APPLIANCE OPERATING THE APPLIANCE WORCESTER BOSCH GREENSTAR 25CDi/30CDi/35CDi/40CDi 6 720 611 928a (02/05) 13 OPERATING THE APPLIANCE FROST PROTECTION BLeave master switch on. BTurn the central heating temperature control to . If the temperature falls to 5 °C within the boiler it will fire to avoid the possibility of freezing. BAdd a suitable anti-freeze fluid to the USING YOURAPPLIANCE water in the central heating system. B If remote pipework is likely to be subjected to freezing conditions, ensure the installer has fitted a frost thermostat in the area to protect the pipework. CONTROLLING THE HOT WATER TEMPERATURE B The hot water temperature can be set to between approx. 40 °C and 60 °C using the temperature control . DOMESTIC HOT WATER PRE-HEAT Pre-heat reduces the time taken to produce hot water at the tap and is controlled by the ECO button. B Press the ECO button to select either: When the ECO button is not illuminated the boiler will be in pre-heat mode OPERATING THE APPLIANCE WORCESTER BOSCH GREENSTAR 25CDi/30CDi/35CDi/40CDi 6 720 611 928a (02/05) 14 OPERATING THE APPLIANCE (which will reduce the time taken to produce hot water at the tap). OR When the ECO button is illuminated the boiler will be in ECO mode with no pre-heat available. FAULT CONDITION In the unlikely event of a fault occurring while the appliance is in operation: The reset button will flash once per second and the mains indicator (blue light) will flash also. The display shows a fault code. B To reset boiler press the reset button. The reset button will no longer be illuminated and the mains indicator will stop flashing. The boiler will function normally, dependent on programmer and room thermostat settings. If the fault remains and cannot be cleared by pressing the reset button, or if fault persists contact Worcester Bosch for assistance, giving a description of the fault and, if possible, the fault code from the display. USING YOUR APPLIANCE OPERATING THE APPLIANCE WORCESTER BOSCH GREENSTAR 25CDi/30CDi/35CDi/40CDi 6 720 611 928a (02/05) 15 ENERGYSAVING Heating economically The boiler is designed to provide a high level of comfort while keeping gas consumption and the resulting environmental effect as low as possible. The gas supply to the burner is controlled according to the level of demand for heat. The boiler continues to operate with a low flame if the demand for heat reduces. The technical term for this process is modulating control. Modulating control reduces temperature fluctuations and provides even distribution of heat throughout the home. This means that the boiler may stay on for relatively long periods but will use less gas than an appliance that continually switches on and off. TIPS ON ENERGY SAVING Central heating systems with room thermostats/thermostatic radiator valves The central heating control on the boiler should be set to the maximum rated temperature of the central heating system. The temperature of each room can be set individually (except primary room with the room thermostat) using the thermostatic radiator valves. Roof insulation Around 30% of the heat loss from a property is through the roof. Replace any old insulation with new insulation, preferably of around 200 mm thickness or more. Window frames Single glazed windows, particularly those with steel frames, can lose a great deal of heat. Consideration should be given to replacement with PVCu or wooden framed double glazed units. Curtains Lined curtains, or heavier full length curtains can provide excellent insulation. However, always ensure that the curtains do not drape over radiators. WORCESTER BOSCH GREENSTAR 25CDi/30CDi/35CDi/40CDi 6 720 611 928a (02/05) 16 TIPS ON ENERGY SAVING TIPS ON ENERGY SAVING Draughts Try to ensure that draughts around doors, windows, letterboxes and keyholes etc. are reduced by using a suitable draught excluder. Warning - Do not block or seal any air vents that are installed to ensure the central heating boiler operates safely. Room thermostats Reducing the setting of the room thermostat by 1 °C can reduce fuel consumption by up to 10%. New control systems Upgrade your heating control system if necessary with the latest equipment available. The minimum level of control is a programmer, interlocking room thermostat and thermostatic radiator valves. Radiators More often than not radiators will be sited underneath a window, so the warm air from the radiator heats the colder incoming air from the window. The performance of the radiator will be affected if the curtains are allowed to drape over the radiator o...

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