Piping

Verify current plumbing infrastructure is sufficient to support the installation(s) and is leak-free

Select piping materials according to the applicable code requirements (i.e., IRC, IBC)

Cap obsolete but inaccessible piping as close as possible to the point of no access

Locate piping with the following priority: Within conditioned space; Within the building; Outdoor; Below ground (insulated and sleeved)

Install piping in compliance with applicable code (e.g., NFPA 70, IRC, IBC, IMC) and manufacturer specifications according to the following design:

minimize length of runs

allow for insulation on each individual pipe (e.g., no bundling)

install and label tracer lines when piping is installed below ground or when the pipe is hidden within the building

install piping to protect all occupants from contact with hot water pipes

Insulate all accessible pipes carrying hot water to a minimum R-3 per SWS (Water Heating: Thermal Loss Reduction: Pipe Insulation"

Minimize friction loss using the following criteria:

Use smooth piping

Use as few joints and fittings as possible

Use sweeps instead of 90o elbows

Use full port valves

Install dielectric unions when connecting copper to galvanized steel piping in accordance with the IRC and manufacturer specifications

Bond and ground piping as required by NEC (NFPA 70)

Permanently remove equipment from job site and recycle or dispose of removed equipment and refrigerant in accordance with local and federal law (e.g., EPA Section 608 of Clean Air Act of 1990)

Permanently decommission old equipment