The system will only allow a manual reset once the temperature drops below the fixed differential value (typically around 12-15°F)

and 3/8") eliminate the need for multiple fixed wrenches in your tool pouch

and AT-24-399 models

Can this be used for both Natural Gas and Propane

the pilot burner failing to light

Armstrong Fluid Technology 182212-665 Pump 326058-758 The system will only allowThe Armstrong Fluid Technology 182212 665 Pump is a high performance E21. 2 Series circulator engineered for heating and cooling systems. Featuring a powerful 2 5 HP motor operating at 120Vac, this single phase unit delivers a constant speed of 3450 RPM for optimal fluid movement. Built with a durable cast iron body, this high efficiency circulator pump utilizes a maintenance free design with permanently lubricated ball bearings, eliminating the need