this assembly is a standard choice for technicians servicing medium-temperature systems

Plenum-rated pneumatic tubing is mandatory when the installation path utilizes a building's air handling space as a return air plenum

Look for charred or stiff insulation

using a genuine Trane OEM pilot assembly ensures the orifice size and mounting bracket align perfectly

The 1/4" x 4" copper bulb ensures rapid thermal response

Hydrolevel 48-3203SF Hydrostat 321142-301 this assembly is a standardProfessional grade boiler maintenance requires exact replacement parts to ensure system safety and efficiency. The Hydrolevel 48 3203SF Hydrostat is the direct, manufacturer specified replacement for the obsolete 48 3200 03. This technician preferred Fuel Smart Hydrostat is purpose built for Slant Fin gas boilers, including the Sentinel SE 105, SE 140, SE 175, SE 210, and SE 245, as well as Sentry S 90, S 120, and S 160 models. This 24VAC control