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

Key Benefits OEM Precision: Guaranteed compatibility with Lennox equipment

Always ohm out the probe to verify resistance against the manufacturer’s chart

It utilizes robust logic to interpret data from defrost sensors

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

Dwyer Instruments SFI-100-1/2 Indicator Els PW 29614 It is recommended to verifyThe 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