and 6" stainless steel paddles

installing a strainer upstream helps maintain the integrity of the 1

What systems use the York 031-00932-002 Control Relay

and a drainage hose

Critical Safety Protection: Provides immediate shutdown during a blocked vent condition to prevent hazardous flue gas spillage into the space

Functional Devices RIBMNLB-4 Board L99H008 and 6" stainless steel paddlesThe Functional Devices RIBMNLB 4 logic board is a field proven AHU fan safety alarm circuit designed to aggregate multiple shutdown signals into a single supervisory point. This 4 input logic module eliminates the need for complex, hand wired relay interlocking by using high density 2. 75 inch track mount housing. Optimized for 24Vac dc power input, the board accepts up to four normally closed (N C) inputstypically from smoke detectors, freeze stats,