Piping, fittings, and connections shall be installed in accordance with the conditions of their approval.
Piping for heating or cooling panels embedded in concrete shall be steel pipe, Type L copper tubing or plastic pipe or tubing rated at not less than 100 psi at 180°F (689 kPa at 82°C). Joints of pipe or tubing that are embedded in a portion of the building, such as concrete or plaster shall be installed in accordance with the requirements of Section 1221.2.1 through Section 1221.2.3.
Steel pipe shall be welded by electrical are or oxygen/acetylene method.
Copper tubing shall be joined by brazing with filler metals having a melting point not less than 1000°F (538°C).
Plastic pipe and tubing shall be installed in continuous lengths or shall be joined by heat fusion method.
Piping to be embedded in concrete shall be pressure tested prior to pouring concrete. During the pour, the pipe shall maintain the test pressure of not less than one and one-half times the operating pressure but not less than 100 psi (689 kPa). During freezing or the possibility of freezing conditions, testing shall be done with air where permitted by the manufacturer.
Hydronic piping systems shall be installed to permit the system to be drained. The system shall drain by indirect waste in accordance with Section 1001.4. Embedded piping underground or under floors is not required to be designed for draining the system.
Condensate drains from dehumidifying coils shall be constructed and sloped for condensate removal. Such drains shall be installed in accordance with Section 310.0.
Hydronic piping where the exterior temperature exceeds 250°F (121°C) shall have a clearance of not less 1 inch (25.4 mm) to combustible materials.