7.8103.7 Crossover Due to a Backflow into the Cold Water Supply

Topic: 
Water Heating
Subtopic: 
Maintenance/Inspection
Desired Outcome: 
Minimize energy and water waste to the lowest possible life cycle cost
TitleSpecification(s)Objective(s)
7.8103.7a
Hazardous material removal

Health concerns in the removal and replacement of equipment (e.g., asbestos, other hazardous materials) will be identified

Written notification will be provided to occupants of the discovery of hazardous material, including contact information for regional EPA EPA U.S. Environmental Protection Agency, www.epa.gov asbestos coordinator

Occupant will be asked to contract with an EPA EPA U.S. Environmental Protection Agency, www.epa.gov -certified asbestos contractor to conduct abatement before decommissioning and replacement (occupant is responsible for abatement or remediation)

Remediate health hazards using EPA EPA U.S. Environmental Protection Agency, www.epa.gov -certified contractors

7.8103.7b
Installation

Check valve will be installed on the cold water supply to the water heating equipment

A thermal expansion tank will be installed, if not present

Eliminate crossover

7.8103.7c
Commissioning

Water pressure downstream of the check valve will be verified

Expansion tank charge will be verified or set in accordance with SWS 7.8104.8 Domestic Hot Water Expansion Tank (Potable Water)

Ensure proper operation