Laars Heating Systems 20052602 Draft Hood 321702-401 the System Sensor D2 remains

the System Sensor D2 remains a standard for reliable detection within air handling systems

verify the blower transition and ensure the flame sensor is cleaned with fine steel wool—never coarse abrasives—to maintain signal integrity

providing the field flexibility essential for fast-paced service calls

How do I know if my AAON pressure switch is bad

With a quick running time of 7 seconds

Laars Heating Systems 20052602 Draft Hood 321702-401 the System Sensor D2 remainsThe Laars Heating Systems 20052602 Draft Hood is a critical OEM replacement part designed for precision atmospheric venting in residential gas fired hydronic boilers. Engineered specifically for the Laars Mini Therm I & II series, including models JV, JVS, and JVT (sizes 75100), this 10 inch outside diameter diverter hood ensures stable combustion by managing flue pressure. By introducing dilution air into the flue vent connector, it prevents