How to Achieve Whole-House Centralized Control

One System. One Central Controller. Complete Whole-House Ventilation Management.

Our smart fresh air system is designed to provide centralized control with distributed room monitoring, making whole-house ventilation management simple and efficient.

Step 1: Connect the Central Controller

Install the main touchscreen controller in a convenient location, such as the living room or entrance.
The central controller communicates with the ventilation system through RS485 communication, providing a unified interface for whole-house management.

Step 2: Connect Multiple Room Controllers

Connect each G3 Fresh Air Controller to the RS485 communication modbus using the A/B terminals.

The controllers can be installed in different rooms or zones, allowing each area to monitor its own indoor air quality.

RS485 A → A
RS485 B → B

Multiple controllers can be connected to the same communication network, creating a reliable whole-house control system.

Step 3: Connect Each Air Valve

Each G3 Fresh Air Controller can be connected to its corresponding motorized air valve.

For example:

• Controller 1 → Air Valve 1
• Controller 2 → Air Valve 2
• Controller 3 → Air Valve 3

This configuration allows different rooms or zones to manage their airflow independently.

Step 4: Connect the Central Ventilation Fan

The main ventilation fan is connected to the central control system. The system coordinates the ventilation fan with the room controllers and air valves.

When ventilation is required, the system can coordinate fan operation and zone airflow distribution according to the system configuration.

Step 5: Monitor and Manage the Whole House

Once all devices are connected, the central controller provides a convenient interface for managing the fresh air system.

Room controllers can display important indoor air quality parameters such as:

PM2.5 | CO₂ | VOC | Temperature | Humidity

This creates a complete “Centralized Control + Distributed Monitoring + Zone Airflow Control” solution.

System Architecture

Central Ventilation Fan

↓

Central Touchscreen Controller
↓
RS485 Communication Network
↓
G3 Fresh Air Controller 1 → Air Valve 1
G3 Fresh Air Controller 2 → Air Valve 2
G3 Fresh Air Controller 3 → Air Valve 3

Simple Wiring. Centralized Management. Independent Zone Control.

The system is designed for villas, apartments, smart homes, offices, hotels and multi-zone HVAC applications, providing an easy-to-expand solution for whole-house fresh air management.