Shenzhen HVAC Heat Pump Control Cabinet Retrofit Project Update
VectorTech Controls supported a Shenzhen HVAC heat pump retrofit project with Siemens PLC, Siemens VFD, and Siemens low-voltage components for pumps, fans, compressors, valves, sensors, and temperature, pressure, and flow instruments.
Related Project Reference
This update is connected with the related case-study page for a clearer view of engineering scope and cabinet references.
Project Background
The project was a retrofit application for an HVAC heat pump system in Shenzhen, China. The upgrade focused on making the control cabinet more suitable for stable plant-room operation, energy-conscious VFD control, and easier maintenance.
Control Requirements
The system involved water pumps, fans, compressors, valves, sensors, and temperature, pressure, and flow instruments. The control target included constant pressure, constant temperature, VFD energy saving, interlock protection, alarm handling, and automatic/manual switching.
- Pump and fan control with VFD operation
- Compressor, valve, and sensor signal integration
- Constant-pressure and constant-temperature control logic
- Alarm and interlock protection for operating safety
- Manual/automatic switching for site maintenance
VectorTech Engineering Scope
VectorTech Controls prepared the Siemens PLC and Siemens VFD control cabinet integration, with Siemens low-voltage components and contactors used for a consistent electrical platform.
- Retrofit-oriented cabinet wiring and component layout
- PLC logic and VFD control coordination
- Field-signal terminals for instruments and devices
- Pre-delivery inspection and project photo records
Project Result
The retrofit cabinet improved the electrical control structure for HVAC operation, helped operators manage pump and fan control more clearly, and supported easier maintenance for future system service.
Real Project Photos
The following photos help show cabinet construction, component layout, wiring organization, and project delivery context.
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