wassermann ECM Circulator Pump WHM 20-40 SU Instruction Manual

1. Introduction and Product Overview

This manual provides essential information for the safe and efficient installation, operation, and maintenance of your wassermann ECM Circulator Pump WHM 20-40 SU. Please read this manual thoroughly before installation and keep it for future reference.

The wassermann ECM Circulator Pump WHM 20-40 SU is a high-efficiency hot water circulator pump designed for various applications. It features advanced ECM technology for optimal performance and energy savings.

Figure 1: wassermann ECM Circulator Pump WHM 20-40 SU. This image highlights key performance metrics such as a maximum water flow of 11 GPM, a maximum head lift of 12.46 FT, a maximum operating pressure of 145 PSI, and a liquid temperature range of -50°F to +230°F.

2. Safety Information

Always observe the following safety precautions to reduce the risk of injury, electric shock, or property damage.

• Electrical Safety: Ensure the pump is connected to a properly grounded electrical outlet. All electrical work should be performed by a qualified electrician in accordance with local codes.
• Water Temperature: Be aware of the liquid temperature range. Do not exceed the maximum specified temperature to prevent damage to the pump and potential scalding.
• Pressure: Do not exceed the maximum operating pressure. Install pressure relief valves if necessary.
• Installation: Installation should only be performed by qualified personnel. Ensure all connections are secure and leak-free.
• Maintenance: Disconnect power before performing any maintenance or service on the pump.

3. Package Contents

Verify that all items listed below are included in your package. If any items are missing or damaged, please contact customer support.

Figure 2: Contents included in the product package.

1. ECM Circulator Pump x 1
2. 1" to 3/4" Adapter x 2
3. 1" to 1/2" Adapter x 2
4. Nut x 2
5. Rubber Washer x 2
6. Teflon Tape x 1
7. 9.8FT Three-prong Plug Power Cord x 1
8. Instruction Manual x 1

4. Setup and Installation

This section outlines the typical installation process for the wassermann ECM Circulator Pump in an open-loop hot water recirculation system. Consult a qualified plumber or HVAC technician for professional installation.

4.1 System Diagram

Figure 3: Typical installation for open loop hot water recirculation systems. This diagram illustrates the placement of the circulator pump, isolation valves, backflow preventer, thermal expansion tank, hot water tank, drain valves, and flow check valve within a plumbing system.

Follow the diagram above for proper placement of the pump and associated components. Ensure that isolation valves are installed on both sides of the pump to allow for easy servicing without draining the entire system. A backflow preventer and thermal expansion tank are recommended for system integrity.

4.2 Connecting the Power Cord

The pump comes with a pre-attached power cord. Locate the power cord connection point on the pump.

Figure 4: Power cord connection point. Simply insert the included power cord into this port until it is securely seated. The communication line connection point is not enabled for this model and should be ignored.

Insert the included 9.8FT three-prong plug power cord into the designated power connection port on the pump. Ensure a secure connection. The other port, labeled as a communication line connection, is not active for this model and should be disregarded.

5. Operating Instructions

The wassermann ECM Circulator Pump features a smart digital display for easy monitoring and control.

5.1 Control Panel Overview

Figure 5: Smart Circulating Pump control panel. This image details the running light, flow indicator light, power indicator light, digital display showing power, flow rate, and control mode, and the setting button.

• Running Light: Indicates the operational status of the pump.
• Flow Indicator Light: Shows if water is flowing through the pump.
• Power Indicator Light: Displays the power status.
• Digital Display: Shows current power consumption, flow rate, and the selected control mode.
• Setting Button: Used to adjust pump settings and modes.

5.2 Indicator Meanings

Use the setting button to cycle through different operating modes (CC, CP, PP) and adjust parameters as needed for your specific application. Refer to the digital display for real-time feedback on power consumption and flow rate.

6. Maintenance

Regular maintenance ensures the longevity and optimal performance of your wassermann ECM Circulator Pump. Always disconnect power before performing any maintenance.

• Periodic Inspection: Periodically check for any leaks around the pump connections. Tighten connections if necessary.
• Cleanliness: Keep the exterior of the pump clean and free from dust or debris.
• System Flushing: If the pump is part of a heating or hot water system, follow the manufacturer's recommendations for system flushing to prevent sediment buildup.
• Material Advantage: The pump head is constructed from stainless steel, which offers superior resistance to corrosion compared to cast iron pump heads. This contributes to cleaner water quality and a longer service life, reducing the need for frequent maintenance related to rust.

Figure 6: Comparison highlighting the benefits of a Stainless Steel Pump Head (clean water, durable service life) over a Cast Iron Pump Head (turbid water, easy to rust).

7. Troubleshooting

If you encounter issues with your pump, refer to the following troubleshooting guide. For problems not listed here, contact customer support.

8. Specifications

9. Warranty and Support

For warranty information or technical support, please contact wassermann customer service. Keep your purchase receipt and product model number (WHM 20-40 SU) handy when contacting support.

Contact information can typically be found on the manufacturer's website or on the product packaging.