This document is an installation and user manual for the Microwell HEAT PUMP, designed for swimming pool water heating and cooling. The manual covers models HP 900 BLACK Inverter, HP 1100 BLACK Inverter, and HP 1500 BLACK Inverter, with a version date of 01/2022.
Function Description
The Microwell HEAT PUMP is an inverter-driven heat pump specifically designed for heating and cooling swimming pool water. It can also be used for other applications requiring water temperature conditioning, such as fish tanks, wine cellars, or horse cooling facilities. The heat pump operates by transferring heat from the ambient air to the swimming pool water (or vice versa for cooling). It utilizes an expansion valve and capillary to manage the refrigerant flow, ensuring efficient operation across various ambient temperatures. The system is designed to automatically adjust its operation based on the desired water temperature and ambient conditions, maximizing energy efficiency. The heat pump can achieve high efficiency, with a COP (Coefficient of Performance) ranging from 3.5 to 6.9 depending on ambient and water temperatures, indicating significant energy savings compared to traditional heating methods.
Important Technical Specifications
The manual provides detailed technical specifications for the HP 900, HP 1100, and HP 1500 BLACK Inverter models across different ambient and water temperature conditions.
Ambient Temperature: 27°C, Water Temperature: 26°C, Humidity: 80%
- Heating capacity (kW):
- HP900: 9.0
- HP1100: 11.5
- HP1500: 15.4
- Power input (kW):
- HP900: 0.17-1.55
- HP1100: 0.21-1.95
- HP1500: 0.27-2.7
- COP:
- HP900: 10.6-5.8
- HP1100: 10.9-5.9
- HP1500: 10.7-5.7
Ambient Temperature: 15°C, Water Inlet Temperature: 26°C, Humidity: 70%
- Heating capacity (kW):
- HP900: 1.3-6.6
- HP1100: 1.8-8.6
- HP1500: 2.1-11.5
- Power input (kW):
- HP900: 0.21-1.57
- HP1100: 0.28-1.91
- HP1500: 0.33-2.61
- COP:
- HP900: 6.2-4.2
- HP1100: 6.4-4.5
- HP1500: 6.3-4.4
Ambient Temperature: 35°C, Water Inlet Temperature: 32°C
- Cooling capacity (kW):
- HP900: 4.9
- HP1100: 6.5
- HP1500: 6.7
General Specifications:
- Power supply: 230V/1PH/50Hz
- Running ambient temperature range: -7°C ~ 43°C
- Water temperature range – heating mode: +15°C ~ +35°C
- Water temperature range – cooling mode: +8°C ~ +35°C
- Refrigerant: R32
- Sound level at 10m-1m dB(A):
- HP900: 40-49
- HP1100: 41-50
- HP1500: 43-53
- Water pipe connection (mm): 50mm
- Compressor type: GREE Rotary
- Water flow (m³/h):
- HP900: 2.7
- HP1100: 3.3
- HP1500: 4.4
- Net dimension WxHxD (mm):
- HP900: 932x609x377
- HP1100: 932x609x377
- HP1500: 1015x766x427
- Net weight (kg):
- HP900: 43
- HP1100: 44
- HP1500: 61
The refrigerant used is R32, which is a medium GWP (Global Warming Potential) HFC-32 or difluoromethane. The unit is designed for outdoor installation in a well-ventilated area.
Usage Features
The Microwell HEAT PUMP offers several user-friendly features for operation and control:
- Control Panel: The unit is equipped with a digital control panel with various buttons and indicators for mode selection, temperature setting, and fault display.
- Operating Modes:
- Cooling Mode: For decreasing pool water temperature.
- Heating Mode: For increasing pool water temperature.
- Automatic Mode: The unit automatically selects heating or cooling based on the desired temperature.
- BOOST Mode: Runs the unit at full power to reach the required temperature as soon as possible.
- SMART Mode: Combines full power with lower speeds as it approaches the desired temperature.
- ECO Mode: Maximizes efficiency for 40-70% of the power.
- AUTO Mode: Combines all previous modes, maintaining the ECO mode while maintaining the required temperature.
- Start-up & Shutdown: The unit can be turned ON/OFF by pressing and holding the power button for 0.5 seconds.
- Temperature Setting: Users can easily set the target water temperature using UP/DOWN arrows on the control panel.
- Defrosting: The unit automatically enters defrosting mode when necessary to maintain efficient operation in cold conditions.
- Clock Setting: Allows setting the current time for timed operations.
- Scenario/Operational Mode: Provides options for different operational scenarios, including AUTO, BOOST, SMART, and ECO.
- Parameter List and Breakdown Table: The control panel allows access to various operational parameters (t01-t12) such as gas return temp, inlet/outlet water temp, coil temp, ambient temp, exhaust temp, and fan speed.
- Password Protection: The control panel has a password setting interface to prevent unauthorized changes.
- Fault Interface: Displays specific fault codes (e.g., P01 for inlet temp sensor fault, E01 for high pressure prot.) to help diagnose issues.
- Swimming Pool Water Parameters: It is crucial to maintain pH values between 6.8 and 7.9, total chlorine amount not exceeding 3 mg/l, and salt content not exceeding 6% wt/wt for optimal performance and longevity of the heat pump.
- Installation Requirements: The unit requires proper ventilation, with specific clearances for air inlet and outlet. It should be installed by a qualified engineer. The piping should include a PVC coupler and a condensation drain barb fitting. A bypass valve and filter are recommended for the water circuit.
Maintenance Features
Regular maintenance is essential for the longevity and efficient operation of the Microwell HEAT PUMP:
- "CUT OFF" Power Supply: Always cut off the power supply before cleaning, examination, and repair to prevent electric shock.
- Drain Water: Drain water clear of the machine, especially before winter.
- Clean the Machine Body: The machine body should be cleaned with a soft cloth and mild detergent. Avoid using harsh chemicals.
- Clean the Heat Exchanger: Regularly clean the heat exchanger to ensure optimal performance.
- Check Water Supply Device: Regularly check the water supply device and the release often.
- Clean the Pool/Spa Filter: Regularly clean the pool/spa filter to avoid damage to the unit as a result of dirty or clogged filters.
- Check Refrigerant Circuit: The refrigerant circuit should be checked by a certified technician for leaks and proper charge.
- Check Electrical Devices: Electrical components and connections should be inspected periodically for damage or loose connections.
- Ventilated Area: Ensure the installation area is open and that it is adequately ventilated.
- Winterization: In winter season when you don't swim, it is important to drain the water from the heat pump and the entire water system to prevent freezing damage. The titanium heat exchanger may be damaged if water freezes inside.
- Refrigerant Management: Any work involving the refrigerant circuit (R32) must be performed by certified personnel who comply with relevant regulations and safety standards. This includes checking for leaks, adding or removing refrigerant, and proper disposal.
- Repair and Scrap: If repair or scrap is required, contact authorized service centers. Do not attempt to work on the equipment by yourself.
- Leakage Test: A leakage test must be performed after installation and any repair involving the refrigerant circuit.
- Stock Substances: Do not stock substances that will block air flow near the inlet or outlet area, otherwise the efficiency of the heater will be reduced or even stopped.
- Combustible Gas/Liquid: Don't use or stock combustible gas or liquid such as thinners, paint and fuel to avoid fire.
- Pipes and Heater Insulation: In order to optimize the heating effect, install heat preservation insulation on pipes between swimming pool and the heater, and please use a recommended cover on the swimming pool. Connecting pipes of the swimming pool and the heater should be ≤10m.
- Safety Inspection: Safety inspection must be carried before the maintenance or repair for heat pumps with R32 gas in order to minimize the risk.
- R32 Gas Leaks: If R32 gas leaks during the installation process, all operations must be stopped immediately and call the service center.
- Warranty: The heat pump is covered by warranty for particular conditions. Any action resulting in damage of the heat pump, property or other damage caused by improper usage of this product or in contrary with this installation and user manual is excluded from warranty coverage.
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