Description
Featuring 1 3/8" x 1 5/8" SWT (sweat) connections
offering updated circuitry and more reliable signal processing
replacing thousands of OEM configurations
For technicians servicing Utica gas boilers or Dunkirk equipment
Aprilaire 6404 Control 321042-401 Featuring 1 3/8" x 1The Aprilaire 6404 Control is a professional grade 4 zone control panel designed to provide precise HVAC zoning solutions for both residential and commercial applications. This universal multistage zone controller is compatible with single stage heat cool, multi stage conventional (up to 2H 2C), and heat pump systems (up to 4H 2C). Featuring an LCD display for setup and LED status indicators for real time diagnostics, the Aprilaire 6404 simplifies the