Regular HVAC system inspection is recommended to ensure the valve cycles correctly

allowing technicians to calibrate the secondary air intake to meet specific burner manufacturer requirements

OEM Reliability: Genuine Weil McLain part prevents the common vibration and airflow issues found in universal aftermarket alternatives

This high-limit cutout opens the circuit at 150°F and features a 40°F differential

875" W x 2

Functional Devices RIB243P-NC Power Relay 319825-402 Regular HVAC system inspection isThe Functional Devices RIB243P NC is a heavy duty, enclosed power relay engineered for rigorous commercial and industrial application control. Featuring 16 inch, 600V rated wire leads and a 0. 50 inch NPT nipple, this "Relay in a Box" provides a streamlined installation for 3 pole power switching. The 24 Vac dc continuous duty coil operates a 3PST configuration with Normally Closed (NC) contacts, making it a reliable choice for failsafe operations or