Commercial Heat Pump

Central Water Heater Solutions

Overview of commercial heat pump system – wind cooling chiller

Haier’s R32 modular chiller series consists of 3 models with different capacities, meeting the needs of supplying domestic hot water with large capacity, and is equipped with scroll compressor technology with integrated inverter (Inverter). These modules are designed for independent installation in a “plug-and-play” format or a combination of multiple modules depending on application requirements. This chiller series uses R32 refrigerant with a GWP of 675.

Up to 16 Haier chiller modules (with any power level) can be connected under the control of a single central controller for a total power of up to 2272kW. Simple design, reasonable configuration and built-in protection features help these models operate reliably and save management costs. In addition, all devices are equipped with the Modbus protocol to connect to the building management system (BMS) when required.

Product features

• • 1 High-performance components provide excellent performance  . The latest generation DC inverter compressor with EVI technology produces powerful “power” for the equipment. The unique design with higher compression ratio and larger pressure differential allows the unit to operate reliably even under the harshest environmental conditions. It allows stepless compressor power adjustment to achieve precise temperature control. Specifically:
    • EVI Technology: Thanks to EV technology, heat pumps can work stably at ambient temperatures lower than -30°C, and the efficiency of heat pumps is also significantly increased.
    • BPM Motor: Equipped with a dedicated optimized BPM (brushless permanent magnet motor) motor to improve performance and reduce noise.
    • Oil Pump: Equipped with a positive displacement type oil pump to ensure lubrication of the bearing system in a closed condition.
    • Optimized design of winding and VCR technology: Optimizing the winding mechanism and VCR to better suit the operating requirements at partial load conditions, in order to improve seasonal efficiency.
    • Qual sempliance design: protects the compressor in case of debris or liquid entering the combustion chamber. Make sure the coil shaft is in contact with the feed coil shaft with moderate force to prevent wear and leakage.
    • “Swivel Link” Design: Control the force between the rolling shaft and the fixed roll shaft while the compressor speed increases.
  • 2 DC Motor Fan Φ1000:

• • The industry’s largest diameter axial fan increases airflow and heat exchange more efficiently while reducing noise… The back edge of the fan blade is designed with a bio-simulated tooth shape, which effectively cuts and collects airflow at the air outlet to reduce wind noise, produce stable and powerful airflow, and operate smoothly. The DC motor-controlled fan provides better seasonal performance.
  • Tubular Heat Exchanger: The monolithic U-shaped heat exchanger increases the heat exchange area by 47% and allows airflow from 360° to improve efficiency. Compared to the previous generation of R410A air-cooled modular chillers. The internal threaded copper tubes enhance internal turbulence and thereby improve heat exchange. The corrugated fins are made of hydrophilic aluminum foil to improve airflow and optimize overall heat exchange efficiency. Thanks to the control by 2 electronic expansion valves, the refrigerant flow is more evenly distributed, resulting in more efficient heat transfer.
  • Shell & Tube Heat Exchanger: The telescopic heat exchanger has a patented design that can greatly improve the anti-freeze and anti-fouling ability of the equipment. The installation of baffles enhances the turbulence of the liquid, which in turn promotes the heat transfer between the fluids.
  • 3 Outstanding flexibility: Wide operating range. The device can operate stably in a variety of conditions, making it an ideal choice for a wide range of uses. Specifically:

• • Ambient temperature: Cooling: -20°C-53°C; Heating: -30°C-50°C; Domestic hot water: -30°C-50°C
  • Supply Water Temperature: Cooling: -5°C-20°C; Heating: 20°C-60°C; Domestic Hot Water: 20°C-58°C.
  • 4 Application for multiple uses: The system integrates domestic heating, cooling and hot water, which is easy to adapt to a variety of applications.

• • 5 Intelligent Precision Defrosting:
    • The refrigeration module design monitors the pressure and temperature of the refrigerant; when freezing occurs, the printed circuit (PCB) detects the thermal load deterioration and initiates the defrosting process to ensure the optimal operation of the chiller.
    • CA0100HANH/CA0140HANH has two independent refrigerant circuits. In winter, in heating and defrosting mode, one circuit will work for defrosting, the other circuit remains active for heating, so that the chiller works simultaneously and stably.

 

• • • In a combined system, defrosting one module does not affect the operation of the other modules. If one module is defrosted, the other heating modules remain active. This helps the heating system to be continuous during the defrosting process.
    • To deal with snowstorms and freezing rain, the machine is equipped with a centralized drainage system and a standard electric heating function. This ensures that condensate or defrost water can be quickly discharged to the outdoor unit outside in extreme weather conditions, preventing ice buildup.
  • 6 Low Noise Level:
    • The multi-layer design reduces noise, ensuring that the chiller always operates at low noise levels.
    • Soundproofing materials have been used, which prevents noise from the compressor.
    • Mounted on a rubber anti-vibration pad helps the chiller operate quietly and reduces vibration.
    • Soundproofing materials are removable panels that reduce noise.
    • Brushless DC fan motors and impellers are aerodynamically optimized to reduce noise and vibration.
    • The silent function will work at low speeds.
  • 7 High Reliability:
    • With an emergency stop button and a built-in circuit breaker dual protection design, the unit ensures the safety of the user and the equipment. When the unit is powered on, the circuit breaker’s self-locking mechanism locks up, preventing the user from opening the door of the control box, minimizing the risk of electric shock. In addition, this design protects the circuit system when an electrical fault occurs, resulting in prolonged operation of the chiller.

• • The safety control system has comprehensive protection functions during operation, including overcurrent and overvoltage protection, evaporator and condenser freezing protection, discharge temperature overtemperature protection, phase monitoring which protects against phase loss, phase reversal and phase imbalance, etc. The above protection functions are designed to ensure the stable operation of the equipment.

• • 8 Quality is a top priority:

• • To ensure long-term reliable operation of the equipment, Haier products undergo rigorous simulation tests on critical parts in cooperation with specialized laboratories. In addition, transport simulation tests are also carried out on a vibrating table in the laboratory.
  • 9 User-Friendly Controller:
    • The device is equipped with a 5-inch touch screen, which provides control and monitoring of the device’s operation. Users can easily access the device’s operating parameters through the touch screen. These parameters are useful for system diagnostics after maintenance. If the control system detects a fault, the relevant fault code will be recorded, making it convenient to quickly troubleshoot. The control panel supports the Modbus protocol, which allows the device to seamlessly connect to the Building Automation System (BMS).
  • 10 Easy Installation and Maintenance:
    • The water extension hose can be easily installed without dismantling the cladding. The electrical box has a hinged door design that makes maintenance and operation more convenient. This device can control the 3-door valve on the water line side, the auxiliary heat source and the electric heater in the domestic water heater.

Connection Diagram

• • Detailed Product Specifications
    • Basic Specifications of Domestic Hot Water
    • Model: CA0070HANH/CA0100HANH/CA0140HANH
    • Heating capacity: under the condition of 70C outdoor temperature is 71/100/142 Kw
    • Power Consumption: 22.9/29.1/43.5 Kw
    • COP: 3.1/3.44/3.26 W/w
    • Maximum temperature can be supplied: 600C
    • Power Supply: 3Ph/380-415V/52Hz
    • Noise level: 71/70/72 dB(A)
    • Compressor: Variable Scroll
    • Gas Used: R32
    • Heat exchanger plate: copper tube type and aluminum plate
    • Throttle: electronic valve
    • Quantity of gas to be refilled: 10/22/22 kg
    • Fan: DC motor axial type
    • Fan Air Flow (m3/h): 25400/20500/25400
    • Hot water supply flow (m3/h): 12.2/17.2/24.4
    • Connecting Pipe Diameter: 50/50, 65/65, 65/65 mm
    • Machine Dimensions WxDxH (mm): 1265 x 1210 x 2260/ 2260 x 1255 x 2260/ 2260 x 1255 x 2260
    • Machine Weight (kg): 500/910/910
    • Number of Compressors: 1/2/2pcs