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CIB UNIGAS S.p.A.
689 CINQUECENTO [kW 880 ÷ 9.900]

689 CINQUECENTO [kW 880 ÷ 9.900]

Product catalog summary

Overview: The document details the specifications and features of the new standard K type CINQUECENTO series Low NOx burners, which are designed for high performance and efficiency with low emissions. These burners are suitable for both gas and light oil, with separate operation capabilities.

Specifications: The burners are housed in aluminum with a backward curved centrifugal impeller. They are classified as Class 2 (<120 mg/kWh) for low NOx emissions. The burners feature an independent electric motor for the oil pump, allowing separate operation for gas and oil.

Performance: The combustion head is optimized for a high irradiating flame on natural gas, while a by-pass nozzle with a pressure regulator allows a modulating ratio of 1:3 when using light oil. An UV photocell is included for flame control during operation.

Technical Details: The document provides detailed dimensions and specifications for models K750A, K890A, and K990A, including packaging dimensions, overall dimensions, and power requirements. The burners operate with a fan motor and pump motor, with noise levels kept below 85 dBA.

Graphical Data: Several graphs illustrate the relationship between gas output (kW) and pressure, highlighting the need to consider boiler back pressure for accurate gas pressure readings.

Recommendations: For configuring the gas train, refer to pages 116-117 of the document. The document emphasizes the importance of adding boiler back pressure to the values read on the curves for accurate gas output calculations.

Catalog excerpts

The new standard K 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. In this manner these series can burn the two flues separately. This is possible because these burners are equipped with an independent electric motor for the activation of the oil pump. As a consequence during gas firing, the oil pump motor does not operate and remains off. These burners are equipped with a high performance combustion head, designed to achieve an high irradiating flame when they run on natural gas. Instead, when they run on light oil, they are equipped with a by-pass nozzle which, using a pressure regulator, can reach a modulating ratio of 1:3. Therefore, the burners are provided with an UV photocell to control the flame during the operation. Back-pressure in combustion chamber (mbar) K750A PR-MD...SR K890A PR-MD...SR K990A PR-MD...SR

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TECHNICAL DETAILS Type Gas connections Noise level Motor electrical Fan motor Pump motor power supply kW kW dBA 230 V 1N AC 50 Hz 400 V 3 AC 50 Hz 15,0 2,2 DN65 - DN80 - DN100 - DN125 < 85 230 V 1N AC 50 Hz 400 V 3 AC 50 Hz 15,0 3 DN65 - DN80 - DN100 - DN125 < 85 230 V 1N AC 50 Hz 400 V 3 AC 50 Hz 15,0 4 DN80 - DN100 - DN125 < 85 Auxiliary electrical power supply 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

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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.

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689 CINQUECENTO [kW 880 ÷ 9.900]

689 CINQUECENTO [kW 880 ÷ 9.900]

Catalog excerpts

All CIB UNIGAS S.p.A. catalogs and technical brochures