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

Fan control type set to single speed or fixed variable, APS set to none

The fan command energizes the fan output. No APS mechanism is required.

Fan control type set to single speed or fixed variable, APS set to CV

With any fan command, the APS must close within 60 seconds. If the APS does not close within the 60 seconds, the fan command and all heating or cooling outputs turn off. The alarm unit locked out due to APS appears on the UI.

After the APS is proven, if it opens for more than 2 seconds, the fan output de-energizes. If the APS does not close within the 60 seconds, the fan command and all heating or cooling outputs turn off. The alarm unit locked out due to APS appears.

Note: The fan remains on in electric heat units.

The fan retries after 30 minutes of any unit lock out.

If the APS is closed when the fan command is off, the alarm unit lock out due to APS appears. The fan command remains off.

Fan control type set to single speed, variable speed, or fixed variable, APS set to variable volume

Note: If the fan control type is set to variable speed, the APS set-up automatically sets to variable volume. The parameter no longer appears in the menu.

With any fan command, duct pressure must reach 0.10 in/w.c. within 60 seconds. If the pressure point does not close within the 60 seconds, the fan command and all heating or cooling outputs turn off. The alarm unit locked out due to APS appears.

After the pressure point is proven if the duct pressure drops below the 0.10 in./w.c. for more than 2 seconds, the fan command and all heating or cooling outputs turn off. The alarm unit locked out due to APS appears. The fan retries after 30 minutes of any unit lock out.