09-02 Thermal expansion relief valve

Question: 09-02Code Section: 7Date: 8 February 2009OBC 2006 Reference:

Question: Would the valve (EXV- 78-RV) and the subsequent drawing listed in the attachment achieve compliance with OBC Thermal Expansion protection due to installation of a backflow preventer.

Interpretation: No, The valve shown is for use as an isolation valve for a hot water tank and may not be installed in a larger line at a dead-end as per manufactures installation requirements and CSA certification.

Interpretation: Approved at AMES 2009