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Pulse arcade — neon hairlines and corner brackets frame the playfield brief.
providing visual indicators of economizer or sensor malfunctions directly on the LCD
preventing hazardous exhaust leaks and pressure switch trip-outs
Key Benefits Maximum Heat Dissipation: Precision-molded cogs allow for cooler operation and extended service life compared to wrapped belts
Contractor-Grade Durability: Constructed to withstand the constant thermal cycling and high-heat environments of commercial water heating applications
Remember to recalibrate the calibration screw in the center of the gas cock plug if the housing is repositioned
Siemens Combustion QRA4M.U Scanner L99H008 providing visual indicators of economizerThe Siemens Combustion QRA4M. U is a high sensitivity UV flame scanner engineered for the rigorous supervision of gas or oil flames and ignition spark proving in intermittent burner operations. As a veteran grade flame detector, this sensor utilizes a specialized UV sensitive cell with two electrodes designed to ignite upon detecting radiation within the 190 to 270 nm spectral range. This ignition triggers the necessary current in the flame detector
