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3.6

Combustion Analysis

3.7

Fume Discharge

Monitoring

- the potentiometer for regulating the soft-light feature, the setting for which

can range from the minimum thermal power to the maximum:

- the potentiometer for the maximum thermal power for the heating system,

maximum thermal power setting (factory set at the maximum value, unless

indicated otherwise on the adhesive sticker located in proximity to the

potentiometer);

- The connection to the diagnosis device (TCS-TCS2).

The boiler is designed to make it easy to analyse the combustion by-products.

Using the especially designed apertures, readings can be taken on the temper-

ature of the combustion by-products and of the combustion air, as well as of the

concentrations of O

and CO

The best maximum-power test conditions for the heating system are when the

selector "C" is turned to the flue analysis setting.

The discharge/ventilation of the exhaust fumes can be monitored to check for

losses in general pressure in the system. This is done to eliminate the cause of

lighting failure with the main burner not indicated by a shutdown status.

With a differential manometer connected to the test socket on the combustion

chamber, the DP value for the air pressure switch can be taken. The measured

value should not be less than 10 mbar under maximum thermal power condi-

tions (with the knob "C" on the flue test setting) in order for the unit to function

properly and without interruption.

G20

5 mbar

G25

18 mbar

G30-31

19 mbar

, etc.

B004