Programmable Thermostat

This 7-day programmable hydronic thermostat is engineered for precise temperature control in hydronic heating systems utilizing 2-way or 3-way zone valves and circulator pumps. Compatible with Resideo HONTL8100A1008, TL8100A1008, and TL8100A1008/U applications, this replacement unit delivers dependable performance for residential and light commercial heating installations. The thermostat features an intuitive 7-day programming schedule with up to four customizable periods daily: Wake, Leave Home, Return Home, and Sleep. Default comfort and economy setpoints are pre-assigned to odd and even periods respectively, streamlining setup and operation. The unit provides energy-efficient operation through dedicated Economy and Holiday modes, plus a Vacation preset for extended absences. Manual override and temporary override capabilities allow facility operators to adjust settings as needed without disrupting the programmed schedule. The large backlit display measuring 10 square inches provides clear visibility of indoor temperature, current time and date, operational mode icons, active setpoint, and heating status indicator. Information is accessible at a glance, and the setpoint displays automatically for five seconds when buttons are pressed, reducing confusion and improving user interaction. This replacement thermostat is ideal for property managers, HVAC contractors, and facility maintenance personnel seeking reliable zone control in hydronic heating systems. Its straightforward programming and multiple override options make it suitable for diverse applications ranging from residential homes to small commercial buildings. The unit helps reduce energy consumption while maintaining consistent comfort levels throughout the heating season, making it a cost-effective choice for budget-conscious facility operators.