The document provides specifications for Honeywell TB6980 and TB7980 floating/modulating thermostats for use in hydronic and VAV zoned HVAC systems. The thermostats can control one modulating/floating actuator plus an additional output, display temperature in F or C, and provide P+I temperature control. Installation must meet national and local electrical codes. The contractor is responsible for testing and providing a 5-year warranty on all components.