Section 607. Hot Water Supply System

607.1 to 607.2 {As in IPC}

607.3 Thermal expansion control.

607.3.1 Backflow prevention valve or check valve.

607.3.1.1 Hot water return piping.

When hot water return piping is needed, it must be taken from the supply side of the backflow prevention device.

607.3.1.2 High-hazard buildings.

In addition to the backflow device on the water supply main, at each floor where hazardous uses of water are found, a backflow prevention device must be installed on the water service line that supplies that floor.

607.3.1.3 Testing and inspection certificate.

All testing and inspections must be documented on a certificate attached to the backflow prevention device.

607.4 to 607.5 {As in IPC}