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2. VERIFICATION OF THE CORRECT CHIMNEY PARAMETERS
Correct boiler function significantly depends on quality chimney with correct parameters.
Minimum chimney diameter is 150 mm, however, 200 mm is recommended. Chimney has to be
designed or regulated to achieve prescribed draught of 23–30 Pa at nominal boiler flue gas
temperature value.
ATTENTION! Chimney which does not fulfil required parameters may cause limited
boiler function (Low flue gas temperature, low output, excessive condensation of
tubular exchanger, shorter life-time, even total boiler disfunction)! Guarantee does
not relate to the boiler installed with the chimney of incorrect parameters.
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