Definitions for "Pressure Test"
A hydrostatic (water) test of the concealed radiant panel used to determine the "tightness" and "leak-free" condition of the tubing. The test should always result in "no loss" of the pressure and be performed in accordance with Code approved procedures. The introduction of helium, nitrogen, oxygen, or other type of air to pressurize the system for testing is not an acceptable test and will likely result in inaccurate conclusions.
A test that checks for leaks in the evaporative system that would allow fuel vapors to escape into the atmosphere.
a good thing to do, assuming you cannot draw any conclusions just by looking at the other items
Subjecting tubular products to specified hydraulic or pneumatic internal pressure to detect defects or weaknesses in the tube wall.