TOP 3 e SP3Control system for hydronic fan-coils
Flexible, scalable and compatible with AC, EC and BLDC motors.
The control platform that optimises the operation of Aertesi fan-coils by integrating regulation, protection functions and advanced connectivity. Precise control, versatile installation and centralised supervision for up to 250 units
Complete fan-coil management
The TOP3 – SP3 system provides full control of the unit: heating/cooling mode, fan speed, valve management, air and water probes, and built-in protection functions.
Designed for stable operation in 2-pipe and 4-pipe systems.
Compatible with AC, EC and BLDC motors
The SP3 board is available in the traditional version (AC/EC 0–10 V) and in the SP3-BLDC version for fan-coils equipped with brushless motors.
TOP3 keypad with integrated room sensor
TOP3 offers intuitive control of all unit functions: setpoint, operating mode, fan speeds, key lock, limits and service menu.
Up to 24 units in Master–Slave mode
One fan-coil can be configured as Master, controlling up to 23 Slave units.
BMS integration (up to 250 units)
With the BMS-SP3 module, TOP3 – SP3 integrates into Modbus RTU supervision systems, enabling central management of up to 250 fan-coils.
Smartphone control
Using the APP1-SP3 module, the fan-coil can be controlled remotely via the eWeLink app (Wi-Fi).
TOP3 – SP3 automatically adjusts fan speed, valve operation and working mode to ensure stable comfort all year long, adapting to air/water temperatures and real environmental conditions.
Summer
Automatic cooling management according to setpoint, with valve and fan control based on the water probe. Auto-speed function available.
Winter
Integrated antifreeze protection, hot water detection, and operation based on air or water sensor depending on configuration.
Mid-seasons
Automatic changeover between heating/cooling (if enabled) and fan modulation according to the installed probe.
Gallery
Choose the configuration that best suits your needs
Power boards
- SP3: for AC/EC motors
- SP3-BLDC: for BLDC motors
Room keypads
- TOP3: wall installation
- TOP3-BI: integrated on-board version
Optional modules
- IRR-SP3 → IR receiver with integrated air sensor
- IRC-SP3 → infrared remote control
- APP1-SP3 → Wi-Fi module
- BMS-SP3 → Modbus RTU module
- SND / SND-AIR / SND-AIR-503 → water and air probes
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TOP3 / TOP3-BI |
SP3 / SP3-BLDC | |
| Models and performance |
Backlit LCD display Integrated room temperature sensor 12 Vdc power supply provided by SP3 Functions:
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Power supply: 230 V ±10% 50/60 Hz 2–4 pipe control 230 V valve outputs Motor compatibility:
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Designed to optimize fan coil energy consumption and performance, preventing energy waste and improving system management.
Precise and adaptive control
Modulation based on air/water probes minimises unnecessary starts and optimises fan operation.
Compatibility with EC and BLDC motors
Integration with high-efficiency motor technologies reduces consumption and improves performance.
Centralised management
With BMS-SP3, up to 250 units can be supervised, improving overall system efficiency in large buildings.
Download the full brochure
All detailed technical information, available models, possible configurations, and installation diagrams in a single PDF document.
• Complete electrical and hydraulic diagrams • Dimensions and weights of all models • Available accessories and compatibility • Detailed performance curves
Area reserved for designers and installers
Access the complete technical documentation reserved for professionals
How TOP3 and SP3 are made
Every TOP3 and SP3 unit is designed, assembled and tested entirely in our Italian facilities.
We do not market third-party products: we have been manufacturers since 1986, with over 30 years of experience in hydronic and radiant-system components.
In-house design
Each component is engineered by specialised technical staff.
Made-in-Italy assembly
Assembly and testing are carried out in Italy according to European standards.
Individual testing
Every unit undergoes individual testing before shipment.
Answers to the most common questions about TOP 3 e SP3
No, the keypad works only when connected to the SP3 board.
Up to 24 fan-coils.
Yes, via the BMS-SP3 Modbus (RTU module).
Yes, using the APP1-SP3 Wi-Fi module.
SP3: AC / EC – SP3-BLDC: BLDC motors.
Yes, TOP3 includes an integrated temperature sensor (can be bypassed with external probe).
Yes, via key combination (3+4).
