verify your controller compatibility if attempting to modulate speed via external devices

featuring a mounting profile that fits standard 9/16-inch by 1-1/8-inch cutouts

Can this relay be used on other brands besides Carrier

Can I use this valve on a smaller 1/2-inch residential furnace

This unit operates on a 120VAC 60Hz input

Siemens Combustion QRA2(1) UV Detector Freon verify your controller compatibility ifThe 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