Air Conditioning Unit DDC Control Module Building Automation

Overview of Intelligent Building Automation System

The Building Automation System is an integrated system designed for centralized management and monitoring of various mechanical and electrical equipment within a building. The building control system primarily includes the central air conditioning system, water supply and drainage system, power supply and distribution system, lighting system, elevator system, and more. Throughout the entire building, all mechanical and electrical equipment is centrally managed and monitored via the complete building automation system and its built-in optimized control programs and preset time schedules. Under the premise of meeting control requirements, comprehensive energy savings are achieved, replacing daily operational maintenance tasks with the controller's control functions, significantly reducing daily workloads and minimizing equipment malfunctions or damage caused by maintenance personnel errors. The ultimate goal of building automation is to provide building users with a more efficient, safe, fast, comfortable, and economical living environment.

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BAS for Air Handling Units and Fresh Air Units Main Equipment of Monitoring System

Main Functions of DDC Control Module for Fresh Air Units

1.Automatic Control of Supply Air Temperature

In summer, automatically adjusts the opening of the cold water valve to ensure the supply air temperature reaches the set value.

In winter, automatically adjusts the opening of the hot water valve to ensure the supply air temperature reaches the set value.

2.Automatic Control of Supply Air Humidity

Automatically controls the opening and closing of the humidifying valve to ensure the supply air humidity reaches the set value.

3.Filter Clogging Alarm

Alarms when the pressure difference across the air filter is too high, prompting cleaning.

4.Scheduled Start-Stop Control of Units

Based on pre-arranged work and holiday schedules, starts and stops units at set times, automatically records unit operating hours, and prompts scheduled maintenance.

5.Interlock Protection Control

Interlock: After the fan stops, the fresh air damper, electric regulating valve, and solenoid valve automatically close

Protection: After the fan starts, if the pressure difference before and after is too low, it triggers a fault alarm and interlock shutdown.

Freeze protection: When the temperature is too low, opens the hot water valve, closes the damper, and stops the fan.

Main Functions of DDC Control Module for Air Handling Units:

1.Automatic Control of Supply Air Temperature

In summer, automatically adjusts the opening of the cold water valve to ensure the supply air temperature reaches the set value.

In winter, automatically adjusts the opening of the hot water valve to ensure the supply air temperature reaches the set value.

During transitional seasons, calculates enthalpy based on the temperature and humidity of fresh air and automatically adjusts the mixing ratio.

2.Automatic Control of Return Air Humidity

Automatically controls the opening and closing of the humidifying valve to ensure the return air humidity reaches the set value.

3.Filter Clogging Alarm

Alarms when the pressure difference across the air filter is too high, prompting cleaning.

4.Scheduled Start-Stop Control of Units

Based on pre-arranged work and holiday schedules, starts and stops units at set times, automatically records unit operating hours, and prompts scheduled maintenance.

5.Interlock Protection Control

Interlock: After the fan stops, the fresh air damper, electric regulating valve, and solenoid valve automatically close.

Protection: After the fan starts, if the pressure difference before and after is too low, it triggers a fault alarm and interlock shutdown.

Freeze protection: When the temperature is too low, opens the hot water valve, closes the damper, and stops the fan.

6.Environmental Control in Key Areas

Sets temperature and humidity measurement points in important areas, directly regulating the cold and hot water valves of the air handling unit based on these readings to ensure the temperature and humidity in key areas meet the set values.

Sets carbon dioxide measurement points in important areas, adjusting the fresh air ratio based on concentration levels.

Central air conditioning system manufacturer in Xi'an with competitive prices.

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Elevator control system.