Taco SR501-OR-4 Switching Relay W/Outdoor Reset

The Taco SR501-OR-4 Switching Relay operates as a control part for single circulator systems in hydronic heating applications. The outdoor conditions automatically adjust boiler water temperature which results in better energy efficiency and comfort levels. The relay provides effortless integration between boilers and zone valves and thermostats for residential HVAC systems. The outdoor reset operate assists reduce fuel consumption through to adjust heat output according to conditions. The part provides simple installation and compact dimensions that make system wiring more straightforward. The system's refined control system operation expenses reductions and equipment durability lengthening.