The HK02SB020 is primarily utilized in the cooling circuit to monitor refrigerant levels

and single-gang boxes

Does this unit include mounting hardware or a crankcase heater

If your system requires signaling for a pump or boiler start

York S1-1NP0820 Conversion Kit 320819-301 The HK02SB020 is primarily utilizedThe York S1 1NP0820 Conversion Kit is a field proven solution for converting natural gas to propane (LP) in residential and commercial 95%+ AFUE residential gas furnaces. Engineered specifically for high efficiency single stage units with standard ECM motors, this kit replaces standard components with high grade stainless steel burners and calibrated LP orifices. The shift to stainless steel (SS) burners provides superior resistance to corrosion and