Modbus Reversible Controller for FCU/Floor Heating & A+++ SCOP

SAS922FCH-7W-WIFI

Hydronic Heat Pump Controller

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Core Controller for Heating & Cooling

RS485/Modbus Building Integration

Real-time Humidity & Dew Point

Compatible with FCU & Floor Heating

Silent Operation & High Efficiency Ready

Wide Voltage Input (100-240V AC)

Home Product Residential Thermostats HP Hydronic Thermostat

Product Feature

The SAS922FCH is an intelligent terminal controller specifically engineered for reversible (heating/cooling) air source heat pump hydronic systems in Europe. It utilizes the standard RS485/Modbus-RTU protocol for seamless integration with BMS/EMS, while providing direct output control over both the floor heating valve and the Fan Coil Unit (FCU). Crucially, its built-in humidity and dew point display supports vital anti-condensation strategies, ensuring reliable operation for high-comfort residential floor cooling and FCU. This ultimately maximizes the system's SCOP and delivers superior indoor climate control, making it an essential component for A+++ rated projects.

Key Functions

Year-Round Climate Control

Supports Cooling, Heating, and Fan modes for comprehensive year-round climate management.
Flexible Hydronic Terminal Control

Direct output for Floor Heating Valve and Fan Coil Valve (ON/OFF), accommodating various terminal requirements.
Anti-Condensation Ready

Built-in humidity sensor displays real-time room humidity and dew point for condensation prevention during cooling.

Seamless BMS Integration

Utilizes RS485 and MODBUS-RTU for easy integration into 3rd party BMS or central controllers.
Three-Speed Fan Output

Provides High, Medium, and Low fan speed control outputs for precise air volume adjustment.
Remote Configuration

Key parameters like set temperature and operating mode can be read/written via Modbus for remote diagnosis and configuration.

Product Parameters

● Power Supply: 100-240VAC, 50/60Hz

● Max Load Current: 3A / 250VAC

● Built-in Room Temp. Control Range: 5°C - 35°C

● External Sensor Control Range: 5°C - 70°C (Optional/Not included)

● Temperature Display Accuracy: 0.1°C

● Operating Temperature: 0°C - 50°C

● Storage Temperature: -10°C - 60°C

● Dimensions: 86mm x 86mm x 13mm

Product Dimensions

Product Installation

Product Application Scenarios

The SAS922FCH controller is a core component for high-comfort climate control in European residential settings, particularly where energy efficiency and living experience are paramount. Primary applications include: new build villas and premium apartments utilizing reversible heat pump hydronic systems with floor heating and FCUs for precise zone control; and deep energy retrofit projects aiming to upgrade traditional heating to integrated cooling/heating systems with anti-condensation capabilities. Its Modbus integration also makes it ideal for advanced residential projects requiring connectivity to central Energy Management Systems (EMS) or smart home platforms.

Partnership Support

As an established China-based manufacturer and supplier, we offer professional, customized cooperation support services to global HVAC integrators, equipment manufacturers (OEMs), and engineering companies.

Technical Consulting

Expert teams provide App integration guidance (for Tuya or Private Label), detailed wiring tutorials, and 24-hour support for multi-mode heating system troubleshooting (e.g., reversible heat pump issues).
Customization Services

We support full UI interface customization (e.g., brand LOGO, color adjustment), multi-language menu customization, and deep App function integration (e.g., adding project-specific control modules).
Quality Assurance & Global Warranty

Rigorous Quality Control throughout the manufacturing process ensures product reliability and longevity. We maintain a localized quick-response mechanism to support our global partners, ensuring timely resolution of issues and significantly reducing your operational and after-sales burden worldwide.