While the HN67LM105 is a high-level protection module

A drop in millivoltage due to wear is a primary cause of heating system pilot failure

While it features the standard barbed ports

the probe detects the presence of a flame through the process of ion conduction

Armstrong Fluid Technology 182212-667 Pump 322838-753 While the HN67LM105 is aThe Armstrong Fluid Technology 182212 667 is a high performance E22. 2 Cast Iron Circulator Pump engineered for demanding hydronic applications. Powered by a robust 2 5HP, 120Vac, single phase motor operating at 3350 RPM, this maintenance free unit excels in heating and cooling systems, including radiant panels, geothermal loops, and snow melt installations. Designed with a dry motor configuration, the E. 2 Series provides up to 41% better efficiency