Reznor 121275 Block reliable operation throughout the heating

reliable operation throughout the heating season

this genuine ICP flame rod provides the precise feedback signal required by the integrated furnace control to maintain the gas valve circuit

and elbows without the need for additional fasteners or adhesives

or 45-second ignition systems

secondary output to ensure stable operation of thermostats

Reznor 121275 Block reliable operation throughout the heatingThe Reznor 121275 Stack Flue Block is a high limit safety component engineered specifically as an Energy Cutout Device (ECO) for commercial and industrial gas fired heating units. Designed to monitor the integrity of the ventilation system, this blocked vent switch acts as a critical failsafe by measuring exhaust temperatures at the flue. If the sensor detects a restriction, backflow, or overheating condition where temperatures reach the 275F trip