Home About Us Shipping Returns View All listings Store Categories Outdoor Furnace Brands · Acme Furnace · American Royal · Aquatherm · Aspen · Brute Force · Clear Flame · Conestoga Champion · Coyote · Cozeburn · Crown Royal · Earth · Econoburn · Elite-Indoor · Empyre · Freedom · Free Heat Machine · Garn · Global Hydronics · Greenwood · Hardy · Harmon · Hawken Energy · Heatmor · HeatMaster · Heat Source 1 · Johnson · Legend · Mahoning · Natures Comfort · Northland · Ozark · Pacific Western · Polar · Portage Main · Ridge Wood · Royall · Shaver · Soquoyah · Taylor · Wood Doctor · WoodMaster · Thermo Control · Hicks · Various Wood Furnace Brands Central Boiler Parts · Central Boiler Water-To-Air · Central Boiler Water-To-Water · Central Boiler Convection Heat · Central Boiler Thermopex Pipe · Central Boiler Circulators · Central Boiler Manifolds · Central Boiler Fittings Pex · Central Boiler Fittings NPT · Central Boiler Fittings Copper · Central Boiler Zone/Mix Valves · Central Boiler Thermo Valves · Central Boiler Accessories · Central Boiler Water Treatment · Central Boiler Electrical · Central Boiler Controllers · Central Boiler Door Related · Central Boiler Gas Related · Central Boiler Chimneys · Central Boiler Orig. Equipment · Central Thermostats /Aquastats · Central Boiler Maxim Parts Copper Hydronic Manifolds · Manifolds Uponor ProPex · Manifolds Pex Crimp · Manifolds Compression Std. Pex · Manifolds Compress Pex-Al-Pex · Manifolds Accessories Underground Pipe Pumps, Supplies, Accessories · Pumps · Pump Accessories Door Kits / Gasket Materials · Pre-Cut Gasket Lengths · Pellet Stove Gasket Kits · Gasket Adhesives · Full Roll / Box, Bulk Gaskets Hanging Hydronic Heaters Pipe Fittings · Fittings Pex · Fittings Pex-Al-Pex Comp. · Fittings Copper Other See all items in the store Product Description The Ecocirc 19-16 is a smart, user-friendly, truly variable speed circulator which is ideally suited for use in heating, cooling and potable water application. Designed to be set once and forgotten. The onboard intelligence automatically adjusts speed to ensure maximized efficiency and accurate performance to suit a wide range of performance requirements. Integral check valve is supplied lose with every unit; if a check valve is required for installation, insert the O-ring end of check valve into the discharge port of the pump body and hand press the valve body into place until it snaps in position Proportional pressure (factory default mode) sensor less control mode that automatically adjusts differential pressure and flow according to the selected proportional pressure curve; this mode is recommended for use in systems with high pressure losses in the system; identified by blue LED lit behind the adjustment dial Constant pressure - sensorless control mode that automatically maintains a constant differential pressure by varying the flow according to the selected pressure curve; this mode of operation is preferred in systems with relatively small pressure losses in distribution systems; identified by green LED lit on the adjustment dial Constant speed - the pump maintains a fixed speed at any flow demand, based on the curve that is set on the adjustment dial identified by the white light lit on the speed adjustable dial Auxiliary modes 1 automatic air purge air trapped in the pump housing can be purged using this function 2 stand by this helps to keep the power consumption low(less than 1-Watt) when pump operation is not required ABOUT US Authorized supplier of Central Boiler Parts and all other Outdoor Wood Furnace supplies. Your One Stop Shop for Outdoor Furnace Installation Parts Info: We specialize in supplying our customers with quality parts for a complete installation! We have anything you will need including: Insulated Pex Piping, Plate Heat Exchangers, Hot Water Forced Air Coils, Pool Heat Exchangers, Hot Water Unit Heaters, Pex Tubing, Circulator Pumps, Aquastats, Valves, Fittings, etc. Also stock complete line of Door Gasket Material for all Pellet Stoves, Wood and Gas burners, Don't see it listed Ask. SHIPPING Fast Next Day Shipping. Since many orders are 3rd party shipment, tracking may be delayed or unavailable. We will update you if any information is received. RETURNS Returns not accepted, unless DOA right out of box. Manufacturer's Warranties apply. Questions Questions, reach out to us via the message service.