The blower often defaults to "on" when a limit switch trips as a safety measure to cool the heat exchanger

It is commonly utilized across various industrial heating systems requiring an open-high configuration

Enhanced Combustion Safety: Provides the necessary CFM to ensure complete venting of flue gases through the primary and secondary heat exchangers

reducing control panel clutter and simplifying wire management

This increases the magnetic field detected by the sensor

Lennox 89W77 Blower Motor R-134A The blower often defaults toThe Lennox 89W77 Blower Motor (part number 104849 05) is a high duty, direct drive motor specifically engineered for critical application in industrial and commercial HVAC systems. Operating at 240V with a 1 3 HP rating, this 825 RPM motor provides the precise torque and static pressure performance required for consistent airflow in air handlers and light duty packaged units. Built as a Permanently Split Capacitor (PSC) motor, it features a 1. 9 Amp