The new standard H type CINQUECENTO series Low NOx burners Class 2 (< 120 mg/kWh), made in aluminum housing with a backward curved centrifugal impeller is studied and developed to get high performance and efficiency combined with low emissions. This series with a maximum power of 6.850 kW, are in this selection of product that is particularly competitive. The userfriendly application and maintenance are the strengths of these burners. Back-pressure in combustion chamber (mbar) H455A PR-MD...SR H630A PR-MD...SR H685A PR-MD...SR

TECHNICAL DETAILS Type H455A H630A H685A Auxiliary electrical power supply Motor electrical power supply Noise level For the configuration of the gas train, see pages 116-117. Suggested boiler drilling Burner flange Approximate values (regarding model with gas train DN 80) Approximate values

Back-pressure in combustion chamber (mbar) Back-pressure in combustion chamber (mbar) Back-pressure in combustion chamber (mbar) Minimum inlet gas pressure (mbar) Minimum inlet gas pressure (mbar) Minimum inlet gas pressure (mbar) Attention: the graph shows the value of the gas output (kW) against the corresponding pressure without the combustion chamber back pressure. To know the minimum gas pressure at gas train, in order to get the gas output, it is necessary to add the boiler back pressure to the value read on the curve.