Unoccupied heating and cooling operation - Johnson Controls - LIT-12011950 - Building automation software - Smart Equipment Controller - 5.0

Smart Equipment Controls Sequence of Operation Technical Bulletin

Brand
Johnson Controls
Product name
Smart Equipment Controller
Document type
Technical Bulletin
Document number
LIT-12011950
Version
5.0
Revision date
2024-06-06
Product status
Active
Language
English

Unoccupied mode heating and cooling stages are not affected by the staged percent command.

Compressor operation

This section assumes Free Cooling is not available.

If the operational space temperature is greater than the CV unoccupied cooling setpoint, begin staging on all available compressors respecting the 15 minute interstage delay. If the operational space temperature drops below the CV unoccupied cooling setpoint - 3°F, turn off all compressors once their respective minimum run timers are satisfied.

Heating operation

If the operational space temperature is less than the CV unoccupied heating setpoint, begin staging on all available heating stages while respecting the 15-minute interstage delay. If the operational space temperature rises above the CV unoccupied heating setpoint + 3°F, turn off all heating stages as soon as their respective minimum run timers are satisfied.