Baxi Potterton WH65, WH46 manual Activating the CHIMNEY-SWEEP Function, Annual Service

20. ACTIVATING THE CHIMNEY-SWEEP FUNCTION

To facilitate measurement of the combustion efficiency and improve the cleanliness of the production products, the chimney sweep function can be activated by proceeding as described below:

1)Press the (2-3) together until the pointer “” appears on the display alongside the symbol (about 3 seconds but no more than 6 seconds). In these conditions, the boiler operates at the maximum heat output set for central heating.

2)Press either of the buttons to exit the function.

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Figure 19

21. ANNUAL SERVICE

To ensure the boiler operates at peak efficiency, the following checks must be performed every year:

•Check on the appearance and tightness of the gas and combustion circuit gaskets;

•Check on the condition and position of the ignition and flame sensing electrodes (see section 18);

•Check on the condition of the burner and its fixing to the aluminium flange;

•Check for any dirt in the combustion chamber. Use a vacuum-cleaner for this cleaning operation,

•Check if the syphon trap is dirty;

•Check that the gas valve is calibrated correctly (see section 15);

•Check on the central heating system pressure.

INSTRUCTIONS PERTAINING TO THE INSTALLER 32 926.772.1 - GB/IE