this unit is dedicated to 1-heat/1-cool conventional systems

It is recommended to verify if your specific installation requires additional NPT plugs or float switches to meet overflow protection requirements

sequence switching

fitting both Resideo/Honeywell and several Aprilaire whole-house bypass models

Always verify the part number on your existing board's schematic before installation to ensure exact pinout compatibility

Dwyer Instruments SFI-100-1/2 Indicator Els PW 29614 this unit is dedicated toThe Dwyer Instruments SFI 100 1 2 is a field proven midwest sight flow indicator designed for immediate visual verification of fluid movement. Integrated with a 1 2" NPT female connection, this unit features a single window design with a high visibility rotating impeller that provides clear confirmation of flow rates in both liquid and gas applications. Constructed with a heavy duty bronze body and a tempered glass window, it is built to withstand the