Ariston 47-116-15 installation instructions Status

3.6COMBUSTION ANALYSIS

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3.7FUME DISCHARGE MONITORING

The flue connector has two apertures, readings can be taken for the temperature of the combustion by-products and of the combustion air, as well as of the concentrations of O2 and CO2, etc. .

To access these intakes it is necessary to unscrew the front screw and remove the metal plate with sealing gasket.

The best test conditions, with the maximum heating power, are achieved by turning the selector knob “C” to the “max” position and removing the electrical connection to the heating sensor (see section 6.).

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In the boiler, it is possible to monitor the correct operation of the flue exhaust/air intake, checking for a loss of general pressure in the system. Through the use of a differential manometer connected to the test points of the combustion chamber, it is possible to detect the ∆ P of operation of the air pressure switch.

The value detected should not be less than 0,55 mbar for 23kW and 0.75 mbar for 27kW under conditions of maximum thermal power in order for the boiler to function properly and without interruption.

3.8	BOILER SAFETY SYSTEMS	The boiler is fitted with the following devices (see section 3.2 for references).
		1 -	IGNITION FAILURE:
			This control signals an ignition failure on the burner 7 seconds after a
			lighting failure. The L.E.D. “F” will illuminate to signal the shutdown
			status.
			The system can be reset by pressing and releasing the button “H” after
			checking to make sure that the gas cock is open.
		2 -	CIRCULATION FAILURE:
			This control signals that the safety pressure switch on the primary
			circuit has not sensed a pressure of at least 1 bar within 40 seconds of
			the activation of the circulation pump; the circulation pump comes to a
			halt and the red L.E.D. “J” illuminates.
			The system may be reset, after re-establishing the correct level of
			pressure in the boiler, turning the “A” knob.
		3 -	OVERHEATING:
			This control shuts off the boiler in the case where the primary circuit
			reaches a temperature in excess of 105°C.
			The red L.E.D.s “I” and “F” will illuminate to signal this shutdown
			status.
			The system can be reset by waiting a few minutes for the primary
			exchanger to cool down and then by pressing and releasing the “H”
			button.
		4.	LIMESCALE BUILD-UP:
			The boiler is equipped with a device that limits the formation of
			Limescale in the secondary exchanger by controlling the temperature of
			the domestic hot water (max 61°C) and also controlling the temperature
			of the water in the primary heating circuit.

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