Air monitoring station reset - Johnson Controls - LIT-12011950 - Building automation software - Smart Equipment Controller - 5.0

Smart Equipment Controls Sequence of Operation Technical Bulletin

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

Setpoints and related data

The setpoints and related data include the following items:

  • Fresh Air Intake Setpoint (MOAFlow-Sp)
  • Fresh Air Intake Value (Fr-Air)
  • Fresh Air Intake Max Sensor Range (MOA-Range)
  • Fresh Air Intake Enable (FrAir-En)

Inputs

The input for air monitoring station reset is Fr-Air (0-10V input on the Econ board).

Operation

The fresh air max sensor range must match the range of the air monitoring station on the unit.

When the fresh air intake value falls below the fresh air intake setpoint the economizer damper position increases above minimum position until the fresh air intake value equals the fresh air intake setpoint +/- 40 cfm.

When the fresh air intake value rises above fresh air intake setpoint the economizer damper position decreases until the fresh air intake value equals the fresh air intake setpoint or it reaches minimum position setpoint.

Note: The low ambient minimum position may force the damper position below the current setpoint and disables the air monitoring station reset.