Which type of humidifier uses the most water?
A) rotating plate B) bypass C) plate D) rotating-drum
B
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Which of the following is generally not powered by a steam turbine, which gets its energy provided by a boiler?
A) Pumps B) Turbines C) Cooling towers D) Compressors
When FCA is used, welds may stop in a corner.
Answer the following statement true (T) or false (F)
Which of the following statements is true?
a. If an HVAC contractor detects an IAQ problem during routine maintenance, the contractor should immediately inform the customer about the problem in writing. b. HVAC contractors have no liability for system repairs that do not meet local code requirements if the code was changed before the repairs were completed. c. Occupants of a building who claim to suffer from sick-building syndrome may sue the owner of the building, but not the HVAC contractor, for damages. d. The International Building Code requires that HVAC contractors assume unlimited liability when retrofitting existing systems.
Air in a hydronic system can cause ____.
A. reduced water circulation B. increased efficiency C. corrosion D. both a and c