This document is the user manual for the Wellis® Inverter Spa Heat Pump, designed for heating hot tubs and swim spas. It provides essential information for optimal use and maintenance of the device.
Function Description
The Wellis® Inverter Spa Heat Pump is designed to heat pool water efficiently. It features a power-off memory function, allowing it to restart automatically after a power recovery. The heat pump offers two operating modes: Smart mode and Silence mode, catering to different user needs and conditions.
Important Technical Specifications
The heat pump operates within an air temperature range of -7°C to 43°C, with an ideal performance range between 15°C and 25°C. The water temperature setting can be adjusted from 18°C to 40°C.
The manual details various models (GHD-150-0324 to GHD-150-0333) with different capacities and specifications:
Advised Pool Volume (m³):
- GHD-150-0324: 15~30
- GHD-150-0325: 20~40
- GHD-150-0326: 25~45
- GHD-150-0327: 30~55
- GHD-150-0328: 35~65
- GHD-150-0329: 40~75
- GHD-150-0330: 50~95
- GHD-150-0331: 65~120
- GHD-150-0332: 65~120
- GHD-150-0333: 90~160
Performance Condition (Air 26°C, Water 26°C, Humidity 80%):
- Heating capacity (kW): Ranging from 6.5 (GHD-150-0324) to 35.6 (GHD-150-0333).
- C.O.P: Ranging from 14.0~5.7 (GHD-150-0324) to 14.6~5.5 (GHD-150-0333).
- C.O.P at 50% speed: Ranging from 10.0 (GHD-150-0324) to 11.0 (GHD-150-0327).
Performance Condition (Air 15°C, Water 26°C, Humidity 70%):
- Heating capacity (kW): Ranging from 4.8 (GHD-150-0324) to 24.0 (GHD-150-0333).
- C.O.P: Ranging from 7.1~4.3 (GHD-150-0324) to 7.7~4.5 (GHD-150-0333).
- C.O.P at 50% speed: Ranging from 6.0 (GHD-150-0324) to 6.8 (GHD-150-0327 and GHD-150-0333).
- Rated input power (kW): Ranging from 0.13~1.1 (GHD-150-0324) to 0.62~5.2 (GHD-150-0333).
- Rated input current (A): Ranging from 0.56~4.78 (GHD-150-0324) to 0.89~7.4 (GHD-150-0333).
Power Supply:
- Models GHD-150-0324 to GHD-150-0330 use 230V/1 Ph/50Hz.
- Models GHD-150-0331 to GHD-150-0333 use 400V/3 Ph/50Hz.
Advised Water Flux (m³/h): Ranging from 2~4 (GHD-150-0324/0325) to 12~18 (GHD-150-0333).
Sound Pressure (1m dB(A)): Ranging from 37.8~47.2 (GHD-150-0324) to 42.6~54.7 (GHD-150-0333).
Sound Pressure (10m dB(A)): Ranging from 17.8~27.2 (GHD-150-0324) to 22.6~34.7 (GHD-150-0333).
Water Pipe In-Out Spec (mm): 48.3 for all models.
Net Dimension LxWxH (mm):
- 961×340×658 (GHD-150-0324 to GHD-150-0328)
- 961×420×658 (GHD-150-0329)
- 961×420×758 (GHD-150-0330)
- 1092×420×958 (GHD-150-0331/0332)
- 1161×530×958 (GHD-150-0333)
Net Weight (kg): Ranging from 42 (GHD-150-0324) to 120 (GHD-150-0333).
Note: These values are valid under ideal conditions (pool covered with an isothermal cover, filtration system running at least 15 hours a day). Parameters are subject to periodic adjustment for technical improvement.
Usage Features
The heat pump is controlled via a user-friendly interface with several buttons:
- ON/OFF: Powers the unit on or off.
- Unlock: Press for 3 seconds to unlock/lock the screen. The screen automatically locks after 30 seconds of inactivity.
- Speed: Selects between Smart and Silence modes.
- Up / Down: Adjusts the set temperature.
Operating Modes:
- Smart mode (default): Offers 20% to 100% heating capacity with intelligent optimization for fast heating.
- Silence mode: Provides 20% to 80% heating capacity with a sound level 3dB (A) lower than Smart mode, ideal for night use.
Defrosting:
- Auto Defrosting: The defrosting indicator flashes during the process and stops flashing once complete.
- Compulsory Defrosting: Can be initiated by pressing the Speed and Up/Down buttons together for 5 seconds while the heat pump is heating. The indicator will flash. (Note: Intervals should be more than 30 minutes, and the compressor should run for more than 10 minutes).
Safety Precautions:
- The heat pump should only be used to heat pool water, not flammable or turbid liquids.
- Avoid lifting the water union when moving the heat pump to prevent damage to the titanium heat exchanger.
- Do not obstruct the air inlet and outlet.
- Do not insert anything into the inlet or outlet, as this can reduce efficiency or stop operation.
- Avoid using or storing combustible gases or liquids (thinners, paint, fuel) near the unit.
- In case of abnormal circumstances (noises, smells, smoke, electricity leakage), immediately switch off the main power and contact a dealer. Do not attempt self-repair.
- The main power switch should be out of children's reach.
- Cut off power during lightning storms.
Error Codes (not failures):
- E3: No water flow.
- Ed: Anti-Freezing Reminder.
- Eb: Out of the operating range.
- E6: Insufficient water flow or pump blocked.
- ES: Power abnormal.
Maintenance Features
Daily Maintenance:
- Always ensure the water pump is on before starting the heat pump and off after the heat pump is turned off, for extended service life.
- Regularly clean the evaporator with household detergents or clean water. Do NOT use gasoline, thinners, or similar fuels.
- Check bolts, cables, and connections regularly.
Winterizing:
- During winter, when the pool is not in use, cut off the power supply and drain water from the heat pump.
- When operating the heat pump below 2°C, ensure there is always water flow to prevent freezing and potential damage to the titanium heat exchanger.
- To drain water, unscrew the water union of the inlet pipe.
Installation and Repair:
- Installation, removal, and maintenance must be performed by professional personnel according to instructions.
- A gas leakage test is required before and after installation.
- The product must be kept away from fire sources.
- Installation must be in a well-ventilated, open environment, not indoors or in a closed space.
- Vacuum completely before welding; field welding is not allowed and must be done by professional personnel in a maintenance center.
- If gas leakage occurs during installation, stop immediately and return the unit to a professional maintenance center.
- For maintenance or disposal, contact an authorized service center.
- Operators handling gas must be qualified with valid certification.
- Strictly follow manufacturer requirements for maintenance and gas filling; refer to the technical service manual.
Transportation & Storage:
- Sealing is not allowed during transportation.
- Transport goods at a constant speed to avoid sudden acceleration or braking, reducing collision risk.
- The unit must be kept away from fire sources.
- Storage must be in a bright, wide, open, and well-ventilated area, with ventilation equipment required.
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