WHAT ARE THE CODE REQUIREMENTS FOR PRESSURE TESTING THE CHILLED WATER AND HOT WATER DISTRIBUTION PIPING (CAMPUS STYLE UNDERGROUND PIPING) USED FOR COOLING AND HEATING LOADS TO VARIOUS BUILDINGS? IS HYDROTEST MANDATORY BY ANY GOVERNING CODE? OR CAN A PNEUMATIC AIR TEST BE USED? IF PNEUMATIC...
Normally hydrostatic testing for chilled water/heating hot water distribution system is specified, to be tested at 1.5 times of working pressure. Is pneumatic test pressure (150 psig) in lieu of hydrostatic test acceptable? Which code governs for testing of chilled/hot water piping?
