Primary States (Damper Control for Volume Matching) - Johnson Controls - Metasys - LIT-12011147 - Software Application - Controller Configuration Tool - 16.0

Controller Tool Help

Brand
Johnson Controls
Metasys
Product name
Controller Configuration Tool
Document type
User Guide
Document number
LIT-12011147
Version
16.0
Revision date
2023-10-02
Language
English
  • Pressurize: This mode opens the OAD and closes the RAD and EAD.

  • Depressurize: This mode opens the EAD and closes the RAD and OAD.

  • Close: This mode opens the RAD and closes the EAD and OAD.

  • Purge: This mode opens the EAD and OAD and closes the RAD.

  • Min OA: This mode closes the EAD. The RAD and OAD are 100% open. This is done to prevent air from entering the building through the exhaust air damper.

  • Hold: This mode holds the dampers in their last position.

  • Ramp Min OA: This mode ramps the EAD closed and the OAD open at a controlled ramp rate. The RAD position is the complement of the EAD position.

  • Ramp Open: This mode ramps the EAD open at a controlled ramp rate. The RAD position is the complement of the EAD position, and the OAD is at a fixed 100% position.

  • T Control: This is the free cooling state. The EAD is modulated to allow outdoor air for cooling purposes. The OAD position is fixed at 100%, and the RAD position is the complement of the EAD position.

Table 1. Damper Control for Volume Matching Command Hierarchy

Mode

FSCS OAD Cmd 1

FSCS EAD Cmd1

FSCS RAD Cmd1

PID Tuning Reset

State

*

!Auto

*

*

*

FSCS Control

*

Auto

!Auto

*

*

FSCS Control

*

Auto

Auto

Auto

*

FSCS Control

FSCS Control

Auto

Auto

Auto

*

FSCS Control

Pressurize

Auto

Auto

Auto

*

Pressurize

Depressurize

Auto

Auto

Auto

*

Depressurize

Close

Auto

Auto

Auto

*

Close

Purge

Auto

Auto

Auto

*

Purge

Min OA

Auto

Auto

Auto

*

Min OA

Hold

Auto

Auto

Auto

Reset 1st PID

T Control

Hold

Auto

Auto

Auto

*

Hold

Ramp Min OA

Auto

Auto

Auto

*

Ramp Min OA

Ramp Open

Auto

Auto

Auto

*

Ramp Open

T Control

Auto

Auto

Auto

*

T Control

1 The FSCS Cmds (OAD, EAD, RAD) are not used.