Taco Comfort Solutions 0018E High-Efficiency Circulator User Manual
Quick guide for the Taco Comfort Solutions 0018E ECM circulator, covering installation, wiring, operating modes, Bluetooth programming, and troubleshooting.
Table of contents
Quick guide from the manual
The Taco Comfort Solutions 0018E is a variable-speed wet rotor circulator with an ECM permanent magnet motor. It is designed for closed-loop hydronic heating systems. Key features include Bluetooth connectivity for control and diagnostics, SureStart automatic air purging, and three selectable operating modes.
Installation
The circulator can be installed on either the supply or return side of the boiler. For optimal performance, it should be positioned away from the expansion tank. The motor must be mounted in a horizontal position. Ensure the flow direction arrow on the casing matches the system flow. Use only the provided O-ring gaskets; do not use flat rubber gaskets.
Wiring
Disconnect AC power before wiring. Remove the terminal box cover and use a flexible conduit. Connect the line/hot power to the black lead and the neutral to the white lead. No ground wire is required as the unit is double-insulated. Ensure all connections are secure and replace the terminal box cover.
Operating Modes
The circulator features three manual operating modes selectable via the dial:
- Proportional Pressure (TRV): Varies speed to maintain a proportional pressure differential.
- Constant Pressure (ZV): Varies speed to maintain a constant pressure differential.
- Fixed Speed (ZONE CIRC): Infinitely adjustable between MIN and MAX settings.
The unit also supports Bluetooth programming via the Taco 0018e ECM Circulator mobile app, which allows for advanced control and performance reporting.
Maintenance and Troubleshooting
If the circulator is noisy, check for cavitation (increase suction pressure) or foreign bodies in the impeller (disassemble and clean). If the unit does not run, verify power supply, check for blown fuses, or allow the unit to cool if it has overheated. A red LED indicates a blocked rotor; follow the manual's unblocking procedure by disconnecting power, removing the motor, and clearing debris from the impeller.
Practical help
Common problems
Increase the system suction pressure within the permissible range.
Verify power supply, check for blown fuses, or allow the unit to cool if it has overheated.
Disconnect power, remove the motor, and clean the impeller/casing.
Vent the system to remove air; repeat fill and purge steps.
Before use
- Ensure the system is a closed-loop hydronic system.
- Verify the water temperature is below 230°F (110°C).
- Check that the power supply is 110-120V, 50/60 Hz, single phase.
- Ensure the motor is mounted in a horizontal position.
- Use only the provided O-ring gaskets.
- Ensure the system is filled with water or a maximum 50% glycol solution.
Specs in practice
- Max Operating Pressure
- 125 psi (8.6 bar).
- Max Water Temperature
- 230°F (110°C).
- Operating Power
- 44W maximum.
Model compatibility
- Not suitable for open loop potable water or chilled water systems.
- Compatible with water or maximum 50% water/glycol solution.
- Requires flexible conduit only; not for use with rigid conduit.
- Installations at elevations over 5000 feet require a minimum fill pressure of 20 psi.
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.