Optimal Airflow Management: Designed to provide protection without compromising the unit pressure drop or cooling efficiency

it utilizes a hex brass mounting head and is white color-coded for quick field identification of its temperature rating

This model serves as a direct replacement compressor for various residential and light commercial systems

Does this kit include the regulating spring

Versatile Primary Taps: Supports 208/240 VAC inputs

Lochinvar & A.O. Smith 100163259 Sight Glass Kit 319825-402 Optimal Airflow Management: Designed toThe Lochinvar & A. O. Smith 100163259 Sight Glass Kit is a critical OEM replacement part designed for high performance visual monitoring in Lochinvar Knight and A. O. Smith residential and commercial boilers. Engineered for high pressure HVACR environments, this kit allows technicians to verify flame ignition and combustion stability without compromising the integrity of the heat exchanger seal. As a direct replacement for obsolete part numbers