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Simplified Installation: Features 0
is not interchangeable with Mark IV or MicroTech II legacy boards due to different terminal layouts and communication protocols
or frequent system lockouts
This 8214 series valve is rated for a maximum operating pressure differential of 5 PSI
or excessive vibration within the burner assembly
Aprilaire 4991 Tube & Screws 320788-703 Simplified Installation: Features 0The Aprilaire 4991 is a critical Steam Dispersion Tube & Screws assembly designed for seamless integration with Aprilaire whole home steam humidifiers. This genuine HVAC replacement part ensures even moisture distribution within your ductwork, preventing condensation buildup and enhancing the efficiency of your indoor air quality system. Engineered for durability, the Aprilaire 4991 humidifier part features a precision drilled tube that facilitates