White-Rodgers 90-290Q Relay Key Benefits: Precise Thermal Protection:

Key Benefits: Precise Thermal Protection: Engineered to open at exactly 170°F to protect the heat exchanger from overheating conditions

The McDonnell & Miller 323300 Head Gasket (Model 92-68) is a critical replacement component engineered specifically for Series 94 and 194 Low Water Cut-Offs and pump controllers

as repeated tripping indicates a serious underlying airflow or combustion issue

requiring only a standard drill opening and 3/8" tubing for port connection

Visible soot

White-Rodgers 90-290Q Relay Key Benefits: Precise Thermal Protection:The White Rodgers 90 290Q Relay is a heavy duty, 24V single pole normally open (SPNO) switching solution designed for high reliability in HVACR control circuits. As a veteran preferred fan relay, this unit features a Type 84 enclosed design, making it an ideal choice for managing single or two speed fan motors, solenoids, and resistive loads. With a contact rating of 8 Amps inductive and 16 Amps resistive at 125 250 VAC, the 90 290Q provides