1. Introduction
Thank you for choosing the Generic 40KW Stainless Steel Swimming Pool Heat Exchanger. This manual provides essential information for the safe installation, operation, and maintenance of your new heat exchanger. Please read this manual thoroughly before installation and use, and retain it for future reference.
This heat exchanger is designed to efficiently transfer heat from a primary heat source (such as a boiler or solar panels) to your swimming pool, spa, or hot tub water, maintaining a constant desired temperature.
2. Safety Information
WARNING: Failure to follow these safety instructions could result in property damage, serious injury, or death.
- Installation must be performed by a qualified professional in accordance with all local codes and regulations.
- Ensure the heat exchanger is properly grounded.
- Do not operate the unit if any part is damaged.
- Always disconnect power to any associated pumps or heating systems before performing maintenance or service.
- The maximum operating temperature for this unit is 230℉ (110℃). Do not exceed this temperature.
- The maximum operating pressure is 145 PSI. Do not exceed this pressure.
- Chlorinators must feed downstream of the heat exchanger. This prevents highly concentrated chlorinated water from entering the heat exchanger, which can cause rapid corrosion.
- Maintain proper water chemistry. A pH level between 7.2 and 7.8 and a free chlorine residual at 1.0 to 3.0 ppm are recommended. Water chemistry is not covered under the warranty.
3. Product Overview
The Generic 40KW Stainless Steel Swimming Pool Heat Exchanger is constructed from high-grade stainless steel, offering excellent resistance to corrosion and saltwater environments. Its design ensures maximum heat exchange efficiency with minimal pressure loss.
Key Features:
- Stainless Steel Construction: Durable and resistant to corrosion, rust, and saltwater.
- Constant Temperature Heating: Efficiently transfers heat to maintain desired water temperature.
- Maximum Heat Exchange: Optimized design to minimize pressure loss and maximize heat transfer.
- Compact Design: Small footprint with included mounting brackets for easy installation.
- Versatile Application: Suitable for swimming pools, spas, hot tubs, and integration with solar or hydraulic heating systems.



4. Setup and Installation
4.1 Package Contents:
- 1 x Heat Exchanger Unit
- 4 x Mounting Parts (brackets and clamps)
- 1 x Instruction Manual
4.2 Mounting Instructions:
The heat exchanger comes with stainless steel fixed brackets for easy installation. Choose a suitable location that is easily accessible for maintenance and close to both the primary heat source and the pool's circulation system.
- Securely attach the mounting brackets to a stable, vertical surface using appropriate fasteners (not included).
- Place the heat exchanger into the brackets and secure it with the provided clamps. Ensure the unit is level.


4.3 Plumbing Connections:
Connect the heat exchanger to your primary heat source and pool circulation system using appropriate plumbing. Ensure all connections are watertight and sealed properly.
- Side Thread: Female Thread 45mm/1.77in (for primary heat source connection).
- Front and Rear Thread: Female Thread 32mm/1.26in (for pool water circulation).
It is recommended to install isolation valves on both the primary and secondary loops to facilitate future maintenance.

5. Operating Instructions
5.1 Principle of Operation:
The heat exchanger operates by circulating water from your primary heat source (e.g., boiler, solar panels) through one set of coils, while pool water circulates through another set. Heat is transferred from the hotter primary loop to the cooler pool water without direct mixing of the two water streams.
5.2 Achieving Constant Temperature:
Once installed and connected to a heat source, the system will continuously circulate pool water through the heat exchanger. The heat energy from the primary source will warm the pool water, maintaining a constant temperature as set by your pool's control system or the primary heat source's thermostat.
5.3 Solar Panel Integration:
This heat exchanger is suitable for simultaneous use with solar panels (solar panels are not included with this product). Connect the solar panel's heated water output to the primary loop of the heat exchanger for an energy-efficient heating solution.
6. Maintenance
Regular maintenance ensures optimal performance and longevity of your heat exchanger.
- Annual Inspection: Inspect all connections for leaks and ensure mounting hardware is secure.
- Cleaning: Periodically check for any debris or scale buildup within the heat exchanger. If necessary, consult a professional for cleaning procedures.
- Water Chemistry: Maintain proper pool water chemistry (pH 7.2-7.8, free chlorine 1.0-3.0 ppm) to prevent corrosion and scale formation. Improper water chemistry can damage the unit and void the warranty.
- Winterization: In colder climates, ensure the heat exchanger is drained completely to prevent freezing damage during winter months.
7. Troubleshooting
If you experience issues with your heat exchanger, consider the following common problems and solutions:
- No Heat Transfer:
- Ensure the primary heat source is operational and supplying hot water.
- Check for proper water flow in both the primary and secondary (pool) loops.
- Verify that all valves are open. - Low Heat Transfer:
- Check for blockages or debris in either loop.
- Ensure the primary heat source is adequately sized for your pool volume.
- Verify correct water chemistry to prevent scale buildup. - Leaks:
- Inspect all plumbing connections for tightness. Tighten or re-seal as necessary.
- If a leak is detected from the unit itself, contact customer support.
For persistent issues, consult a qualified pool technician or contact customer support.
8. Specifications
| Parameter | Value |
|---|---|
| Model | Genericwp7x8oabt3 |
| Material | Stainless Steel |
| Power Rating | 40KW |
| Dimensions (L x W) | 34.2cm x 15.7cm (13.46in x 6.18in) |
| Item Weight | 6.25 pounds (Approx. 2837g) |
| Side Thread | Female Thread 45mm/1.77in |
| Front and Rear Thread | Female Thread 32mm/1.26in |
| Maximum Operating Temperature | 230℉ (110℃) |
| Maximum Operating Pressure | 145 PSI |
| Heat Exchanger Type | MF-135 |
| Application Scenario | Swimming pool, hot spring, hot tub, solar, hydraulic heating, oil cooling, heat recovery, snow melting |

9. Warranty and Support
For warranty information and customer support, please refer to the documentation provided at the time of purchase or contact the seller directly. Please note that damage resulting from improper installation, misuse, or failure to maintain proper water chemistry is typically not covered under warranty.