Energy Recovery for Residential and Commercial HVAC Systems with Intelligent Control and Wifi Function for Residential ERV HRV And Total Heat Exchanger to Improve Indoor Air Quality

The CFA series fresh air ventilator is a comprehensive ventilation device that integrates air purification and energy recovery. It consists of a heat exchanger, filters, plastic-encapsulated DC fans, and other components, delivering three primary functions:

• Fresh Air Ventilation: Continuously delivers treated fresh air indoors while exhausting stale indoor air to improve indoor air quality
• Air Purification: Outdoor air is purified by filters before being supplied indoors, enhancing indoor air quality
• Energy Recovery: The total heat exchanger extracts energy from exhaust air to heat (in winter) or cool (in summer) incoming fresh air, reducing energy consumption

• Heat Exchange Mode: Recovers energy from exhaust air to heat or cool incoming fresh air
• Bypass Mode: Introduces outdoor air directly indoors without heat exchange when temperature is suitable
• Automatic Operation Mode: Operates according to preset fan speed levels with optional auto-bypass
• Sleep Mode: Low-speed operation with screen off during sleep periods

• 10-level speed adjustment with user-configurable air volume
• Positive/Negative pressure adjustment with separate fan speed control
• Screen lock functionality
• Scheduled on/off operation
• Weekly timer for different operating statuses
• Filter and heat exchanger maintenance reminders
• Power-off memory function
• Fault display with error codes
• Smart bypass based on temperature conditions
• Frost protection for low outdoor temperatures
• Engineering mode for advanced fan speed adjustment

• Ultra-low temperature operation (intermittent operation below -15℃)
• Temperature calibration for three air inlets/outlets
• Advanced sleep mode with intelligent bypass control
• Intelligent air volume compensation for long-term operation

• Cloud control via Tuya Cloud Platform mobile app (requires Wi-Fi module)
• Forced dehumidification with target humidity control (requires humidity sensor)
• CO2 forced exhaust based on preset control logic (requires CO2 sensor)
• Differential pressure controlled filter reminders (requires differential pressure switch)
• Multiple signal interfaces including RS485, bypass control, and alarm signals

Advanced heat exchange technology for maximum energy recovery efficiency

Energy-efficient DC motor technology for reduced power consumption and quiet operation

Flexible installation options to accommodate various building layouts and requirements