1. Introduction
The Wassermann FL-AHRP115V Instant Hot Water Recirculating Pump is designed to provide immediate hot water at your faucets, eliminating the wait and reducing water waste. This pump is specifically engineered for use with tank-type water heaters in indoor domestic hot water circulation systems. Its stainless steel pump head ensures durability and compatibility with potable water. The integrated timer control allows for energy-efficient operation by activating the pump only when hot water is typically needed.
This manual provides essential information for the safe installation, operation, and maintenance of your recirculating pump. Please read it thoroughly before installation and keep it for future reference.
2. Safety Information
Important Safety Instructions:
- This product is for indoor use only. Do not install outdoors or in areas exposed to freezing temperatures.
- Ensure the power supply matches the pump's voltage (115 volts).
- Always disconnect power before attempting any installation, maintenance, or repair.
- Installation should be performed by a qualified plumber or technician if you are not experienced with plumbing and electrical work.
- Do not operate the pump if it is damaged or if the power cord is frayed.
- Keep children and pets away from the installation area.
- Wear appropriate personal protective equipment (PPE) during installation.
3. Package Contents
Verify that all components are present in the package before beginning installation:
- Recirculation pump (1 unit)
- Recirculating pump rubber washer (2 units)
- Installation instructions (1 manual)
Image: Contents of the Wassermann recirculating pump package, showing the pump unit, two rubber washers, and the instruction manual.
4. Specifications
| Feature | Specification |
|---|---|
| Brand | wassermann |
| Model Number | FL-AHRP115V |
| Voltage | 115 volts |
| Power Source | Corded Electric |
| Material | Stainless Steel (pump head), Aluminum (housing) |
| Product Dimensions (L x W x H) | 6.34" x 5.08" x 5.31" |
| Noise Level | As low as 20dB |
| Application | Indoor use, tank-type water heaters |
5. Setup and Installation
The Wassermann recirculating pump is designed for straightforward installation. It connects directly to the hot water outlet of your tank-type water heater. The pump's water inlet features a union nut for easy attachment.
Installation Steps:
- Prepare the Area: Ensure the water heater is turned off and the hot water supply is shut off. Drain some water from the hot water tank to relieve pressure.
- Locate Hot Water Outlet: Identify the hot water outlet pipe from your tank-type water heater.
- Install the Pump: Connect the pump's inlet (with the union nut) directly to the hot water outlet of the water heater. Ensure a secure, leak-free connection using the provided rubber washers.
- Connect to Power: Once the plumbing connections are complete and checked for leaks, plug the pump into a standard 115V electrical outlet.
- System Integration (Optional): For a complete hot water recirculation system, an adjustable temperature sensor valve (not included) may be installed at the furthest faucet from the water heater to create a dedicated water loop.
Image: Diagram illustrating the installation of the Wassermann recirculating pump on the hot water outlet of a tank water heater, showing the hot and cold water lines and an optional adjustable temperature sensor valve for a water loop.
Addressing Pump Noise:
If the pump produces resonant noise during operation, it may be due to the type of connector used. Corrugated water heater connectors can sometimes amplify vibrations. To minimize noise, consider using alternative connection pipes:
- Braided Stainless Steel Supply Line
- Rubber Hose
- Brass Pipe
Image: Illustration showing how corrugated water heater connectors can cause noise and recommending braided stainless steel supply lines, rubber hoses, or brass pipes as quieter alternatives.
6. Operating Instructions
The Wassermann recirculating pump features a timer control to customize its operation, allowing you to have instant hot water when you need it most while saving energy during off-peak hours.
Timer Control Modes:
The pump's timer dial offers three main operating modes:
- Always ON: The pump runs continuously.
- Timer Mode: The pump operates according to the programmed schedule set by the ON/OFF pins.
- Always OFF: The pump remains off.
Image: Close-up of the pump's timer dial, showing the selector switch for 'Always ON', 'Timer Mode', and 'Always OFF' settings.
Setting the Timer:
To set the pump to operate in Timer Mode, use the small, movable pins around the dial. Each pin represents a 15-minute increment. Push the pins outwards for the time periods you want the pump to be ON, and leave them inwards for the OFF periods.
- The dial rotates clockwise, indicating the current time.
- The outer ring of the dial is marked with hours (AM/PM).
- To set an ON period, push the corresponding 15-minute tabs outwards.
- To set an OFF period, ensure the corresponding 15-minute tabs are pushed inwards.
For example, if you typically shower between 5:00 PM and 10:00 PM, you can set the pump to run from 4:45 PM to 10:15 PM to ensure hot water is readily available.
Image: Detailed diagram of the timer dial, showing how to set ON and OFF periods using the 15-minute increment programming tabs, with indications for Noon PM Hours, Midnight AM Hours, and a 5:00 PM triangle marker.
7. Maintenance
The Wassermann recirculating pump is designed for minimal maintenance. Regular checks can help ensure its longevity and efficient operation:
- Visual Inspection: Periodically inspect the pump and connections for any signs of leaks, corrosion, or damage.
- Cleanliness: Keep the exterior of the pump clean and free from dust and debris.
- Operational Check: Occasionally verify that the pump is operating quietly and efficiently during its programmed ON cycles.
For any significant issues or concerns, it is recommended to contact a qualified technician.
8. Troubleshooting
This section addresses common issues you might encounter with your recirculating pump.
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump is not running. | No power, timer set to OFF, or pump malfunction. | Check power connection. Verify timer settings are correct (not 'Always OFF' or during an 'OFF' period). If power and settings are correct, contact support. |
| No instant hot water. | Pump not running, timer not set correctly, or air in the system. | Ensure pump is running during desired times. Check timer settings. Bleed air from the system if necessary (consult a plumber). |
| Pump is making excessive noise. | Vibrations from corrugated connectors, or internal issue. | Replace corrugated connectors with braided stainless steel, rubber hose, or brass pipes. If noise persists, contact support. |
| Water leak at connections. | Loose connection or damaged washer. | Ensure connections are tight. Replace rubber washers if damaged. |
9. Warranty and Support
For warranty information, technical support, or service inquiries regarding your Wassermann FL-AHRP115V Instant Hot Water Recirculating Pump, please refer to the warranty card included with your purchase or contact Wassermann customer service directly. Keep your purchase receipt as proof of purchase for warranty claims.
Wassermann Customer Service: Please visit the official Wassermann website or refer to the contact information provided in your product packaging for the most up-to-date support details.