How to Guide

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PART 3: EXECUTION
3.1 EXAMINATION
A. If installing PEX pipe, ensure that the tube liner has been installed.
B. Ensure the fitting is free from any damage, including but not limited to damaged or missing O-ring, cracked
brass forging or deformed grab ring.
3.2 PREPARATION
A. The tubing shall be cut square to ensure a proper connection.
B. The tubing shall be free of dirt, debris or scale buildup. Any burrs shall be removed using a deburring tool.
C. Mark the piping to use as verification of proper insertion into the fitting.
3.3 INSTALLATION
A. Push-fit fitting shall be installed in accordance with the manufacturer’s installation instructions.
B. Pressure Rating: Install components having a pressure rating equal to or less than the system operating
pressure.
C. Threaded Joints: Threaded joints shall have thread seal tape applied to the male threads only. Tighten joint
with a wrench and backup wrench as required.
D. Pipe Protection: Provide protection against abrasion where tubing/fitting is in contact with other building
materials (including burial) by wrapping with an approved tape, pipe insulation or otherwise suitable
method of isolation.
E. Hydronic Heating: Glycol mixture for hydronic heating application is acceptable up to and including 100%.
F. Behind the wall installation: Pressure test system for no less than 24 hours to ensure no leakage.
G. Removal and reuse of push-fit fitting is allowed when executed in accordance with manufacturer’s
installation instructions.
3.4 FIELD QUALITY CONTROL
A. Water Testing: The copper tubing system shall be water tested for joint tightness. The piping system shall be
filled with water. The system shall be pressurized to the maximum pressure and length of time required by
the code or standard. The system shall have no leaks at the rated pressure.
8/6/2014