Taco I050U3R-1 1/2", 3 Way Outdoor Reset I-Series Mixing Valve (Union Sweat)

Use the Taco Outdoor Reset iSeries Mixing Valves instead of a conventional injection system. The iSeries-R is a microprocessor-based valve designed to regulate the supply water temperature to a heating system, based on a reset ratio, by modulating the position of an iSeries Mixing Valve, so that the heat supplied to the building or zone equals the heat lost by the building.With a full featured outdoor reset control built right into the actuator, there is no need for an externally mounted reset control or expensive control valve. The iSeries-R can also be set up to do zone-by-zone outdoor reset, providing optimal comfort control for every zone.

The direct drive actuator modulates a 2-way, 3-way or 4-way valve that injects different rates of hot water, supplying virtually any water temperature to the heating system.Working off an adjustable reset ratio, the valve’s maximum and minimum system supply temperatures can be adjusted to support all types of jobs, including staple-up radiant floors that require a higher starting temperature.The iSeries-R includes an adjustable boiler protection function which prevents low water temperatures from returning to the boiler.With a multi-status LED indicator light, plug-in wiring connections and an easy to remove actuator, the installation could not be easier.