The addendum was withdrawn because the committee writing the standard determined that the scope should state “what” the requirements of the standard cover, not “when” the requirements are applied.
Tri-City Mechanical, a Comfort Systems USA company based in Arizona, recently signed an approximately $11 million design-build construction contract to build a chilled-water distribution plant for Northwind Phoenix.
Last week, the basics of gas boiler wiring, and wiring in general were discussed, while safety and limit controls for each type of system are the focus this week.