allowing occupants to fine-tune comfort without complex programming

Contractor Grade: Standard 1/8" NPT air connections and top mounting holes ensure seamless integration into existing Schneider Electric or legacy Barber Colman footprints

this specific cover is designated for the FS4-3 and AF air flow series only

providing the necessary hardware to restore proper combustion air flow and venting performance

Standardized Housing: Fits existing chassis cutouts for fast

Siemens Combustion QRA2(1) UV Detector Freon allowing occupants to fine-tune comfortThe Siemens Combustion QRA2(1) UV Detector is a high performance ultraviolet flame sensor designed specifically for the supervision of gas and oil flames in industrial and commercial burner systems. Engineered for intermittent operation, this normal sensitivity detector utilizes a side viewing photodiode to monitor UV radiation in the 190 to 270 nm spectral range. The QRA2(1) features a specialized metallized plastic housing that effectively prevents