Tekmar 274 2-4 Stage Atmosp. Boiler Control w/ Air Make up Contacts & Proof Switch (Replaces 264)

274 Application Brochure
274 Installation and Operation Manual
274 Submittal Data

The Boiler Control 274 is designed to stage multiple boilers using Outdoor Temperature Reset. It can be used in applications ranging from a single zone of baseboard, multiple baseboard and fan coil zones, to dedicated domestic hot water heating in commercial buildings. This control regulates a single heating water temperature through Outdoor Temperature Reset and/or setpoint/DHW target control. It is capable of controlling (stage and rotate) up to 4 on/off boilers as well as the system pump (pump sequencing option).