The CLINT CHA/ML/ST 91÷151 is a series of air/water heat pumps designed for heating and domestic hot water production, featuring scroll compressors and axial fans. These units are suitable for outdoor installation and are designed to provide efficient climate control.
Function Description:
The CHA/ML/ST units are high-temperature air/water heat pumps that utilize axial fans and scroll compressors for outdoor installation. They are capable of producing hot water up to 60°C and are designed to operate efficiently in ambient temperatures ranging from -20°C to 40°C. The units can be configured for heating only or for reversible operation, providing both heating and cooling.
The units are equipped with a sophisticated microprocessor control system that manages all functions, including:
- Temperature regulation: Maintaining desired water temperatures for both heating and domestic hot water.
- Anti-freeze protection: Preventing freezing in the hydraulic circuit during cold weather.
- Compressor management: Optimizing compressor operation for efficiency and longevity.
- Alarm management: Notifying users of any malfunctions or abnormal operating conditions.
- Remote control capability: Allowing for remote monitoring and control of the unit.
- Demand management: Adjusting operation based on energy demand, including options for single or multiple pump control.
The hydraulic circuit includes a plate heat exchanger, water pump, expansion vessel, and safety valve. The units are designed for easy installation and maintenance, with readily accessible components.
Important Technical Specifications:
The CHA/ML/ST series offers various models with different capacities, ranging from 91 to 151. Key technical specifications include:
- Heating Capacity (kW):
- CHA/ML/ST 91: 30.7 kW (nominal)
- CHA/ML/ST 101: 40.2 kW (nominal)
- CHA/ML/ST 151: 52.6 kW (nominal)
- Cooling Capacity (kW):
- CHA/ML/ST 91: 20.4 kW (nominal)
- CHA/ML/ST 101: 28.9 kW (nominal)
- CHA/ML/ST 151: 37.3 kW (nominal)
- Refrigerant: R407C
- Compressors: Scroll type, hermetic. The number of compressors varies by model (e.g., 1 or 2).
- Fans: Axial type, with varying numbers and speeds depending on the model.
- Electrical Supply: 400V/3Ph/50Hz (standard), with options for 230V/3Ph/50Hz.
- Water Flow Rate (l/s): Varies by model and operating conditions, typically ranging from 0.4 to 2.5 l/s.
- Sound Pressure Level (dB(A)): Measured at 1m, typically ranging from 69 to 73 dB(A) for the total unit.
- Dimensions (mm):
- CHA/ML/ST 91: 1850 (L) x 1000 (W) x 1140 (H)
- CHA/ML/ST 101: 1850 (L) x 1000 (W) x 1275 (H)
- CHA/ML/ST 151: 1850 (L) x 1000 (W) x 1275 (H)
- Weight (kg):
- CHA/ML/ST 91: 224 kg
- CHA/ML/ST 101: 239 kg
- CHA/ML/ST 151: 269 kg
Usage Features:
- High-Temperature Operation: Capable of producing hot water up to 60°C, making it suitable for domestic hot water and high-temperature heating systems.
- Wide Operating Range: Designed to operate effectively in ambient temperatures from -20°C to 40°C, ensuring reliable performance in various climates.
- Reversible Functionality: Many models offer reversible operation, providing both heating in winter and cooling in summer.
- Microprocessor Control: Advanced control system allows for precise temperature management, optimized energy consumption, and comprehensive diagnostic capabilities.
- Remote Control Options: Available accessories include remote control panels and RS 485 serial interfaces for integration into building management systems, enabling remote monitoring and control.
- Anti-Freeze Protection: Integrated protection system safeguards the hydraulic circuit from freezing, enhancing reliability in cold conditions.
- Ethylene Glycol Mixtures: The units can operate with ethylene glycol mixtures in the hydraulic circuit, which can improve anti-freeze protection and extend the operating range. Correction factors are provided in the manual for calculating performance with different glycol concentrations.
- Low Noise Levels: Designed with features to minimize noise, making them suitable for residential and commercial applications.
- Easy Installation: The units are designed for outdoor installation, simplifying the installation process.
- Hydraulic Kit: Integrated hydraulic kit includes a water pump, expansion vessel, and safety valve, reducing the need for external components.
Maintenance Features:
- Accessible Components: The design ensures that key components, such as compressors, fans, and electrical connections, are easily accessible for inspection and maintenance.
- Diagnostic System: The microprocessor control system provides detailed diagnostic information, helping to quickly identify and troubleshoot any issues.
- Fouling Factor Corrections: The manual provides correction factors for evaporator fouling, which should be applied to performance data to account for reduced efficiency due to dirt accumulation. Regular cleaning of the evaporator is recommended to maintain optimal performance.
- Electrical Diagrams: Comprehensive electrical diagrams are included in the manual, aiding in electrical troubleshooting and maintenance.
- Scheduled Maintenance: Regular checks of refrigerant levels, fan operation, and hydraulic circuit components are recommended to ensure long-term reliability and efficiency.
- Water Quality: Maintaining good water quality in the hydraulic circuit is crucial to prevent scaling and corrosion, which can impact performance and component lifespan.
- Anti-Freeze Solution Checks: If using ethylene glycol mixtures, regular checks of the concentration are necessary to ensure adequate anti-freeze protection and proper heat transfer.
The CLINT CHA/ML/ST series is a robust and versatile solution for heating and domestic hot water production, offering high efficiency, reliable performance, and user-friendly operation with comprehensive control and maintenance features.
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