Does this unit support spring return

and relief valve assemblies for a complete system overhaul

On-Board Diagnostics: Features a 7-segment digital display for status notification and live flame current readouts without needing a meter

Double Throw (SPDT) switch

Lennox 21655 Shaft 30067439-890 Does this unit support springThe Lennox 21655 Shaft is a critical mechanical component engineered for high performance air handling and blower assemblies within commercial HVAC systems. This bi metal blower shaft is precision machined to withstand the significant torsional loads and high stress environments typical of large scale Lennox equipment. As a veteran grade OEM replacement shaft, it is specifically designed to facilitate the seamless transfer of rotational force from the