Lennox 43L21 Turbulatory Assembly R-134A Internal Safety Interlock: Prevents the

Internal Safety Interlock: Prevents the burner from firing until the damper plate is in the fully open position

High Water Capacity: Superior moisture adsorption prevents ice formation at the expansion valve

It should be positioned as close to the compressor as possible

How do I test the secondary voltage on this unit

ensuring system safety by preventing automatic restarts after a limit trip

Lennox 43L21 Turbulatory Assembly R-134A Internal Safety Interlock: Prevents theThe Lennox 43L21 Turbulator Assembly is a critical OEM replacement part designed to optimize thermal performance within the heat exchanger of Lennox gas furnaces and unit heaters. Engineered from heat resistant Pyrolite, this 8 inch by 1. 8 inch technical component is strategically placed within the heat exchanger tubes to disrupt laminar flow. By inducing a consistent swirling pattern in the flue gases, the turbulator assembly effectively eliminates