The orifice size is strictly calibrated to the furnace's BTU rating and blower capacity

or four-position switching depending on the internal stop screw placement and window blank configuration

this unit includes a 6-pin Zone Bus access port

For contractors managing industrial HVAC valve replacement

For large-scale commercial installations

Armstrong Fluid Technology 182202-647 Pump THPU32HP7Y The orifice size is strictlyThe Armstrong Fluid Technology 182202 647 Pump (Model E9. 2) is a premier 1 6HP high efficiency circulator pump specifically engineered for hydronic systems requiring reliable performance and high speed operation. This 240Vac single phase pump serves as the direct, updated replacement for the discontinued 180200 647 model, providing enhanced durability through its cast iron construction. Designed for versatility, this maintenance free circulator