HMA BT Series
Dehumidifiers for low temperature and demanding applications.
- Application:Low temperature
- Installation:Ducts
- Refrigerant:R410A
- Control:Advanced electronic
Technology
- Operation in low temperature
- Robust structure
- High performance ventilation
- Intelligent control
GENERAL FEATURES
The HMA BT units are specifically designed for dehumidification applications in low temperature conditions, where conventional systems do not provide adequate performance. They incorporate an optimised refrigeration circuit design that maintains efficiency even in cold environments, ensuring precise humidity control.
Construction and Components
Carpentry
The structure of the HMA BT units is made from high-quality galvanised steel, designed to ensure high resistance to corrosion and a long service life even in demanding environments. The configuration with removable panels allows for quick access to internal components, facilitating maintenance operations. The assembly incorporates optimised thermal insulation to prevent energy losses and surface condensation in low-temperature conditions.
Refrigeration circuit
The refrigeration circuit has been specifically designed for low-temperature applications, ensuring stable operation even in critical conditions. It uses R410A refrigerant and is equipped with highly reliable components such as a dehydrator filter, expansion valve, sight glass, and Schrader service valves. It also includes control and protection devices that ensure the correct operation of the system and prolong the equipment's service life.
Compressors
The compressors used in the HMA BT series are designed to operate in low-temperature conditions, offering high efficiency and reliability. They incorporate internal thermal protection and are mounted on anti-vibration supports that significantly reduce the transmission of vibrations and the noise level of the equipment during continuous operation.
Heat exchangers
The evaporator and condenser batteries are constructed with high-efficiency copper tubes and aluminium fins. Their design is optimised to prevent ice formation and maintain high thermal performance even in low ambient temperature conditions, ensuring constant and effective dehumidification.
Ventilation
Equipped with high-performance centrifugal fans, capable of providing a constant airflow and adapting to ducted installations. They are designed to ensure proper distribution of treated air, maintaining adequate available pressures even in complex duct networks.
Anti-ice system
The HMA BT series incorporates specific control and management systems for defrosting that prevent ice formation on the evaporator. This system ensures the proper functioning of the equipment in cold environments, optimising work cycles and ensuring service continuity without performance loss.
Filtration
Filtration system using easily removable and reusable air filters, designed to capture particles and protect internal components. Its maintenance is straightforward, allowing for quick cleaning without the need for special tools.
Control and regulation
The electronic control system using a microprocessor allows for precise management of all operating parameters of the equipment. It automatically regulates the dehumidification, ventilation, and defrost cycles, optimizing energy consumption and ensuring maximum performance in any environmental condition.
Installation Diagram
Technical Specifications
| HMA BT | 270 | 350 | 450 | 550 | 750 | 950 |
|---|---|---|---|---|---|---|
| Humidity absorbed at 30°C - 80% (l/24h) | 254.2 | 379.8 | 469.2 | 590.9 | 845.9 | 1028.0 |
| Humidity absorbed at 30°C - 60% (l/24h) | 183.7 | 265.2 | 341.3 | 427.9 | 605.3 | 766.3 |
| Humidity absorbed at 27°C - 60% (l/24h) | 162.0 | 234.4 | 305.4 | 377.1 | 536.2 | 682.7 |
| Humidity absorbed at 20°C - 60% (l/24h) | 113.2 | 170.6 | 222.6 | 270.5 | 386.5 | 508.2 |
| Humidity absorbed at 10°C - 70% (l/24h) | 96.0 | 132.4 | 175.2 | 206.2 | 298.9 | 391.7 |
| Absorbed humidity at 5°C - 70% (l/24h) | 72.5 | 101.3 | 132.5 | 155.5 | 227.9 | 326.3 |
| Nominal power absorbed at 30°C - 80% (kW) | 4.1 | 5.2 | 8.1 | 9.1 | 14.3 | 18.1 |
| Maximum power absorbed (kW) | 6.4 | 7.8 | 10.5 | 10.6 | 17.6 | 20.8 |
| Maximum current absorbed (A) | 10.8 | 13.0 | 17.1 | 18.3 | 28.6 | 35.2 |
| Starting current (A) | 51.0 | 66.0 | 76.0 | 98.6 | 103.0 | 151.0 |
| Air flow (m³/h) | 3500 | 4200 | 4200 | 5500 | 7000 | 8500 |
| Available pressure (Pa) | 50÷150 | 50÷150 | 50÷150 | 50÷150 | 50÷150 | 50÷150 |
| Refrigerant | R410A | R410A | R410A | R410A | R410A | R410A |
| GWP | 2088 | 2088 | 2088 | 2088 | 2088 | 2088 |
| Gas load (kg) | 3.0 | 2.5 | 2.5 | 9.0 | 8.0 | 8.0 |
| CO₂ equivalent load (t) | 6.26 | 5.22 | 5.22 | 18.79 | 16.7 | 16.7 |
| Sound power (dB(A)) | 70 | 71 | 71 | 73 | 73 | 73 |
| Sound pressure (dB(A)) | 54 | 55 | 55 | 56 | 56 | 56 |
| Power supply | 400/3+N/50 | 400/3+N/50 | 400/3+N/50 | 400/3+N/50 | 400/3+N/50 | 400/3+N/50 |