Part Numbers Effected: VM2644-HD1-RC2A00, VM2644-DD1-RS2A00, VM3450-HY1-FC2A00, VM3450-HY1-FS2A00, VR3450-HY1-FC2A00, VR3450-HY1-FS2A00
Date Code Effected: 4/20 – 4/22
Incorrect wiring guidance was included in the 0026e, 0034e, & 0034ePlus instruction sheets that stated these circulators were double insulated and a grounding wire was not necessary, but recommended for safety. Although the motor of these circulators is double insulated, the circulator as a complete appliance is not. These products must be grounded per UL778 standard. Any products that have been installed without a proper ground connection should have the ground wire added in the field at the next scheduled service. In the unlikely event the external heat sink becomes energized due to a failure in the product, this poses a potential shock risk.
As a precaution, Taco has updated our documentation to reflect the correct installation procedures per compliance with UL778 standards for the above referenced products. Links to updated instruction sheets:
Taco is committed to providing industry leading products with unsurpassed quality and reliability. We apologize for any inconvenience this may bring. If you have further questions, please contact the Taco Comfort Solutions Technical Services Department – 401-942-8000.