Worcester Greenstar Si Compact Series

9
CONTROLS
Greenstar Si Compact– 6 720 807 278 (2013/05)
3.1 OPERATING THE BOILER IN STANDBY
3.1.1 BOILER DISPLAY
This is typical of the display when the boiler is not supplying a central heating or hot water demand.
The display will not be backlit and the internal temperature of the boiler is indicated.
When a heat demand occurs and the boiler fires up, the flame symbol will be displayed.
3.1.2 SETTING THE BOILER FLOW TEMPERATURE FOR THE CENTRAL HEATING SYSTEM
1. Turn the central heating temperature control knob to the desired flow temperature between 30 and 82°C, this will be indicated
on the digital display. This is not the room temperature but the flow temperature through the radiators.
The “e” point provides guidance for the maximum temperature setting for optimum energy efficiency.
2. The radiator symbol will be displayed to confirm that the central heating setting is being changed.
3. After five seconds of inactivity the boiler display will return to the default screen or press to exit.
▶ Comfort levels within rooms should be controlled by your thermostatic radiator valves and/or room thermostat.
3.1.3 BOILER FROST PROTECTION
If you are leaving your property unoccupied during cold weather, please leave your programmer on constant and your room
thermostat set to 15°C.
▶ If the temperature within the boiler falls below 8°C the pump will run to circulate water and prevent the system freezing.
– If the temperature does not rise to 9°C within 30 minutes of the pump operating, the boiler will fire up.
▶ If the temperature within the boiler falls below 5°C the boiler will fire immediately, bringing the boiler temperature up to 12°C to
avoid the possibility of the system freezing.
▶ This process will be repeated until such time that the boiler temperature does not drop below 8°C.
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