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The Armstrong 811 features a small vent hole in the top of the bucket that allows air to escape and collect at the top of the trap for discharge
eliminating excess slack and interference
Key Benefits Multi-Damper Synchronization: Primary solution as a slave damper control relay for managing up to four dampers simultaneously from a single 24V source
2 Cv rating ensures optimal flow management for terminal unit applications like perimeter radiation
Extended Leadwires: Pre-stripped 18-inch leads provide additional slack for flexible wiring in tight mechanical Room configurations
Lennox 64W86 Pressure Switch 320788-702 The Armstrong 811 features aThe Lennox 64W86 Pressure Switch is a critical safety component engineered specifically for two stage gas furnaces. This factory authorized replacement operates as an air pressure sensor, monitoring differential pressure to ensure proper inducer motor performance and venting before allowing the ignition sequence. Designed for high efficiency systems, it features a dual level calibration with a set point high of 1. 20" W. C. and a set point low of 0.