Mechanical Hvac practice test Questions & 100% Verified Answers | Latest Update | Already Graded A+

A separate and distinct ventilation or exhaust system shall be provided for _____? (A)noxious gases (B) corrosive fumes (C)flammable vapors (D) incompatible materials. : D. 505.1.2 In systems conveying flammable vapors, gases, or mists, the concentration shall not exceed 25 percent of the lower flammability limit (LFL). Exception: Higher concentrations shall be permitted if the exhaust system is designed and protected in accordance with the Standard on Explosion Prevention Systems in Chapter 17, using one or more of the following techniques: (a) Combustible concentration reduction (b) Oxidant concentration reduction (c) Deflagration suppression (d) Deflagration pressure containment Separate and distinct systems shall be provided for incompatible materials. Liquid adhesive coatings used on listed air filters shall be of a type that will _____? (A)impede air flow.(B) clog easily. (C)generate noise. (D)have a flash point of 350°F (177°C) or higher. 2 | P a g e : D. 503.3 Air filters shall be listed units. Liquid adhesive coatings used on filters shall have a flash point of 350°F or higher, as determined by the Fire Code standards. Product conveying ventilation or exhaust systems shall be installed to control, capture, and remove emissions generated from product use or handling when required by the _____. (A) mechanical engineer.(B) Building Code or Fire Code. (C) Uniform Mechanical Code. (D) architect. : B 505.1 General. A mechanical ventilation or exhaust system shall be installed to control, capture, and remove emissions generated from product use or handling when required by the Building Code o