Common Questions Is the rotation of this blade reversible

Advanced HVAC Integration: Supports single-speed fan modes and provides dedicated control for economizers

Multi-Refrigerant Compatibility: Optimized for R22

Industrial Durability: Robust encapsulation protects internal windings from the cycling heat and humidity common in mechanical rooms

The integrated spring return actuator provides a critical fail-safe position

Lochinvar & A.O. Smith 100111100 Kit 320720-756 Common Questions Is the rotationThe Lochinvar & A. O. Smith 100111100 Kit is a critical 3" Concentric Vent Kit engineered for high efficiency appliance installations. Designed for use with Lochinvar Knight boilers and A. O. Smith Vertex water heaters, this direct vent termination simplifies the management of intake and exhaust through a single sidewall penetration. Utilizing ULC S636 compliant materials, this kit ensures professional grade durability in demanding HVACR environments.