Honeywell brings a Smile to weather-compensated control

Honeywell’s Smile controller provides weather-compensated heating control in buildings that are too small for a building-management system but too large for domestic-type controls. It provides similar capabilities to the Honeywell Aquatrol 2000, which has provided weather-compensated heating control for many years. The ingenious user panel has a large back-lit LED display and a single rotating control that is also a pushbutton, making it easy to select, change and confirm set times and values — and difficult to make mistakes. These controllers can be used individually or combined with other Smile units in a small network. Pre-loaded programs reduce planning and start-up effort. Two or more heat sources, such as solar thermal supplemented by a boiler, can be integrated in a Smile energy-management system. Up to five controllers can be wired together using a 2-wire bus to form a control system. There are spring terminals for connecting cables and a wall socket with generous space for easy wiring.