Temperature and humidity control - 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

Setpoints and related data

The setpoints and related data include the following items:

  • Thermostat only control enable (Tstat-Only) OFF
  • CV occupied cooling setpoint (ClgOcc-Sp)
  • Temperature/humidity (return) control enable (TempHumCtl-En) ON
  • Maximum temperature/humidity setpoint offset (MaxTempHumSpOff)
  • Temperature/humidity setpoint (TempHum-Sp)
  • Temperature/humidity value per degree offset (TempHumValPerDegOff)

Inputs

The input for temperature and humidity control is operational space humidity (OprSH).

Outputs

There are no outputs for temperature and humidity control.

Operation

The control lowers the current occupied cooling setpoint in one degree increments when the return humidity increases above the temperature/humidity setpoint.

For example, in an occupied mode with an occupied cooling setpoint of 72°F, a temperature/humidity setpoint of 50%, and the temperature/humidity value that = 1° offset at 5%, the following sequences can occur.

  • If the operational space humidity rises to 55%, the occupied cooling setpoint is lowered to 71°F. If the return humidity decreases below 55%, the occupied cooling setpoint returns to 72°F.
  • If the operational space humidity rises to 60%, the occupied cooling setpoint is lowered to 70°F. If the return humidity decreases below 60%, the occupied cooling setpoint returns to 71°F.