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Commercial Grade Build: Constructed with materials resistant to corrosion and mineral buildup common in closed-loop hydronic systems
It ensures the inducer motor is pulling the correct draft through the heat exchanger before allowing the ignition sequence to proceed
turn the setpoint screw clockwise until the Status Open LED illuminates
The 17L41 is the current Lennox replacement part for the older 17L40
Fisher MR95H-117 Pressure Regulator 320735-701 Commercial Grade Build: Constructed withThe Fisher MR95H 117 Pressure Regulator is a compact, direct operated pressure reducing regulator designed for demanding industrial process applications. This configuration features a 1 1 2 inch NPT connection, a 580 psig outlet pressure range, and 416 stainless steel components as specified for the assembly. The Fisher MR95H regulator reduces higher inlet pressure to a controlled downstream pressure without requiring an external pilot or control