1. Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of your WiseWater 110V Circulation Pump with Timer, Model CR-001. Please read this manual thoroughly before installation and use to ensure safe and efficient operation of the pump.
The WiseWater CR-001 is designed to provide efficient hot water circulation, reducing waiting times and conserving water. It features a built-in timer for scheduled operation, high efficiency, and quiet performance, making it suitable for various heating systems.
2. Safety Information
Always adhere to local electrical and plumbing codes during installation. Failure to do so may result in property damage, injury, or death.
- Electrical Safety: Ensure the power supply is disconnected before any installation or maintenance. The pump operates on 110V.
- Water Temperature: This pump is designed for hot water circulation. Ensure the water temperature does not exceed the pump's specified limits.
- Dry Environment: Install the pump in a dry location to prevent damage to electrical components from water exposure.
- Never Run Dry: Do not operate the pump without water. Running the pump empty can cause severe damage.
- Freezing Conditions: During freezing weather, or if the ambient temperature drops below 32°F (0°C), ensure the pump's chamber is emptied to prevent damage from freezing water.
3. Product Overview
The WiseWater CR-001 circulation pump is engineered for durability and performance, featuring a stainless steel head, ceramic bearing, PPO impeller, and a full copper coil. It is suitable for use with drinking water systems.
Key Features:
- Integrated Timer: Allows for flexible scheduling of pump operation to optimize energy consumption.
- High Efficiency: Delivers a maximum flow rate of 10 GPM (38 Liters Per Minute) and a maximum head range of 21.6 feet.
- Quiet Operation: Operates at a low noise level, approximately 30dB.
- Durable Construction: Stainless steel head, ceramic bearing, PPO impeller, and full copper coil for longevity.
- Versatile Application: Compatible with boilers, solar heaters, hydronic radiant heating, and other hot water circulation systems.
Included Components:
- 1 x WiseWater Electric Circulation Pump
- 1 x Sealing Tape
- 2 x DN20 (3/4") to DN15 (1/2") Internal Connectors (Brass)
- 2 x Rubber Gaskets
- 1 x User Manual

Figure 3.1: WiseWater CR-001 Circulation Pump and included accessories.

Figure 3.2: Internal components and material breakdown of the WiseWater CR-001 pump.
4. Setup and Installation
Installation requires basic plumbing knowledge. If you are unsure, consult a qualified professional.
4.1 Pre-Installation Checks:
- Verify that the power supply matches the pump's requirements (110V).
- Ensure the installation location is dry and protected from water exposure.
- Confirm you have all necessary tools, including a wrench.
4.2 Installation Steps:
- Power Disconnection: Turn off the main power supply to the heating system.
- Pipe Preparation: Identify the appropriate location for the pump in your hot water circulation loop. Ensure the pipes are clean and free of debris.
- Connect Adapters: Apply sealing tape to the threads of the included 3/4" to 1/2" brass adapters. Attach these adapters to your existing plumbing as needed.
- Mount the Pump: Connect the pump to the prepared pipe sections using the brass adapters and rubber gaskets. Tighten connections with a wrench to prevent leaks.
- Orientation: The pump's cylindrical body must be positioned horizontally, allowing water to flow vertically through it. Refer to the diagram below for correct and incorrect orientations.
- Fill System: Once installed, slowly refill the heating system with water, bleeding any air from the system. Ensure the pump is fully submerged in water before restoring power.
- Power Connection: Restore power to the system.

Figure 4.1: Reference installation diagrams for floor heating and hot water supply applications.

Figure 4.2: Correct and incorrect pump installation orientations. The cylindrical body must be horizontal.
5. Operating Instructions
The WiseWater CR-001 features an integrated timer for scheduled operation.
5.1 Timer Operation:
The timer dial allows you to set specific operating times for the pump. The dial is typically marked with hours (0-24) and segments that can be pushed in or pulled out.
- Set Current Time: Rotate the dial until the arrow on the timer points to the current time.
- Schedule Operation: Push the corresponding segments outward for the periods you want the pump to run. For example, to run the pump from 12:00 to 12:30 and from 18:00 to 20:00, push out the segments corresponding to these time blocks.
- Operating Modes: The timer typically has a switch with three positions:
- 'I' (Pump Always Works): The pump runs continuously, overriding the timer schedule.
- 'Clock Icon' (Pump Works During Set Time): The pump operates according to the schedule set on the timer dial.
- 'O' (Pump Always Off): The pump remains off.
- Activate Schedule: Set the switch to the 'Clock Icon' position to enable scheduled operation.

Figure 5.1: Timer dial and switch settings for scheduling pump operation.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your circulation pump.
- Regular Inspection: Periodically check for any leaks around the pump connections.
- Cleanliness: Keep the exterior of the pump clean and free from dust or debris.
- Winterization: If the pump is installed in an area prone to freezing temperatures, ensure the system is drained or the pump chamber is emptied to prevent ice damage.
- Avoid Dry Running: Always ensure the system has sufficient water before operating the pump.
7. Troubleshooting
This section addresses common issues you might encounter with your WiseWater CR-001 pump.
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not start | No power supply Timer set to 'Off' or incorrect schedule Motor seized | Check power connection and circuit breaker Adjust timer settings or switch to 'Always On' mode Contact support if motor is seized |
| Pump runs but no water flow | Air in the system Closed valves Pump running dry | Bleed air from the system Open all necessary valves Ensure system is filled with water |
| Reduced water flow | Partial airlock Clogged impeller Incorrect pump speed setting (if applicable) | Bleed air from the system Inspect and clean impeller (power off first) Verify pump settings |
| Unusual noise or vibration | Air in the system Loose mounting Foreign object in pump | Bleed air from the system Secure pump mounting bolts Disconnect power and inspect pump for obstructions |
| Timer not functioning correctly | Incorrect timer settings Timer mechanism fault | Review Section 5.1 for correct timer setup Contact support if timer is faulty |
8. Specifications
| Specification | Detail |
|---|---|
| Model Number | CR-001 |
| Brand | WiseWater |
| Voltage | 110 Volts |
| Wattage | 100 Watts |
| Maximum Flow Rate | 10 GPM (38 Liters Per Minute) |
| Maximum Lifting Height | 21.66 Feet |
| Material | Stainless Steel (head), Ceramic (bearing), PPO (impeller), Full Copper (coil), Brass (connectors) |
| Product Dimensions (L x W x H) | 6" x 5.32" x 7.37" |
| Item Weight | 5.95 pounds |
| Power Source | Corded Electric |
| Noise Level | As low as 30dB |

Figure 8.1: Product dimensions of the WiseWater CR-001 pump.
9. Warranty and Support
Information regarding the product warranty and customer support was not provided in the available product data. Please refer to the product packaging or the manufacturer's official website for details on warranty coverage and how to contact customer support for your WiseWater CR-001 circulation pump.