ACV BG2000 S/45 V13 gas block burner 237D0155

This part is a gas block burner of the type that combines the fan, gas train, burner control, combustion head, and ignition system into a pre-assembled unit. In a boiler system, the burner is mounted on the front plate via the blast tube and flange. When a heat demand signal comes from the room thermostat or controller, the burner control initiates the safety sequence: pre-purge the combustion chamber with the fan, confirm airflow via the air pressure switch, energise the ignition transformer to create a spark at the ignition electrode, and then open the gas valve. The flame is proved by the ionisation electrode within the safety time. During operation, the burner modulates its output by adjusting the fan speed and gas valve position to match the required heat load, following signals from temperature sensors. When selecting a block burner of this class, the key parameters are the output range (kW), the type of fuel (natural gas, LPG, or dual-fuel), and the chamber geometry—specifically the blast tube length and combustion head design, which determine how the flame develops in the heat exchanger. The flange pattern must match the boiler front plate, and the burner must be rated for the electrical supply (voltage and frequency) of the installation. If the boiler is to be converted to a different gas family, a separate conversion kit (injectors, gas valve settings, and possibly a new head) is required; such a conversion always includes re-setting the gas valve and checking combustion values. When replacing a block burner, verify that the new unit’s flange dimensions, blast tube length, and head geometry are compatible with the combustion chamber. The gas valve integrated in the block must be set for the correct fuel and pressure; after installation, commissioning must confirm the flame signal, safety times, and combustion quality (CO₂, O₂, CO). This ACV BG2000 S/45 V13 gas block burner is a complete unit intended for direct fit, but always cross-reference the output and fuel with the appliance specification.