Siemens Combustion QRA4M.U Scanner R-407A Key Benefits: Direct OEM Compatibility:

Key Benefits: Direct OEM Compatibility: Specifically engineered as the drop-in replacement for the 334358-701 and HK06NB015

Does this model require a manual reset after a pressure drop

Direct compatibility with numerous Burnham boiler models

Key Benefits OEM Precision: Guaranteed compatibility with Trane HVAC units

Corrosion Resistance: The high-impact plastic construction eliminates the risk of rust and localized pitting commonly found in older metallic pans

Siemens Combustion QRA4M.U Scanner R-407A Key Benefits: Direct OEM Compatibility:The 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