Zone Control

The Zone Control widget allows you to monitor and manage individual zones within the HVAC system through the Manager interface. Based on configuration, you can control zone status (OPEN, CLOSE, or CLIMATE), airflow, and temperature setpoints, and view real‑time temperature and humidity values when sensors are available.

The behavior and availability of zone controls depend on the HVAC system capabilities and configuration that is defined in the Configurator. This enables efficient and flexible control of airflow and temperature distribution across different zones.

NOTE: Zone ON/OFF reflects the HVAC plant power status and is read‑only.

The Zone Control widget is designed for ducted air‑conditioning systems where each zone is controlled by a physical duct damper. The zone status reflects the damper state, independent of whether the HVAC plant is currently running.

To operate the Zone Control:

Select to access the temperature.
Click / to increase/decrease the set point temperature.

You can view and adjust the target temperature for the zone. The updated temperature value is displayed on the screen.
- Displayed only when a setpoint object and temperature sensor are configured.
- Any value outside the allowed range is automatically restricted to defined limits.
  
  NOTE: The setpoint object supports temperature values in the range of 10 °C to 40 °C. When you set a valid temperature (for example, 30 °C), certain HVAC system accepts the value and updates the setpoint accordingly. If you attempt to set a temperature outside the supported range (for example, 50 °C), certain HVAC system rejects the value and automatically reverts the setpoint to the last valid temperature. This allows only supported temperature values to be applied and maintained within certain HVAC system.
Select to access the air flow level.
Click / to increase/decrease the airflow percentage.

You can adjust the airflow level (0 – 100 %) for the zone. The updated airflow percentage is displayed on the screen.
- Value is mapped from the C-Bus airflow object.
- If the zone is closed, changes are pre-staged and applied later.
- Not displayed if no airflow object is configured.

Select / / to access the zone status.

Refer the below table for Zone Status icons:

Status	Icons
OPEN
CLOSE
CLIMATE

Select either OPEN/CLOSE/CLIMATE.
- OPEN: The zone damper is open. Air flows into the zone when the plant is running. Zone Controls (Open/Close/Climate, Airflow, and Setpoint) are active, and any changes made are applied immediately.
- CLOSE: The zone damper is closed. Airflow to the zone is stopped. The widget becomes greyed out but allows you to make changes. However, these changes are saved temporarily and will be applied when the zone is turned ON.
- CLIMATE: The zone damper is managed automatically by the HVAC system based on climate conditions.
  
  NOTE: For a self-managed zone (where climate status is available in the tag map object), if you change the zone status from CLOSE to OPEN in the Manager UI, the changes are applied temporarily. After a short duration, certain HVAC system will automatically send a command to reset the zone status back to CLIMATE mode, and the Manager UI will update the status accordingly.
The updated mode is displayed on the screen.

Refer the below table for other controls:

Controls

Description

Current temperature (Read only)

Displays the current temperature of the zone.

Available only if a temperature sensor object is configured.
Used for real-time monitoring.

Zone Humidity (Read only)

Displays the current humidity level.

Available only if a humidity sensor object is configured.
Provides environmental status of the zone.