Md Hvac Masters |100 Questions| With Correct Answers.

A plenum duct liner shall have a maximum smoke index of _________. {Ans: 50}_____________ temperature determines the defrost termination on a heat pump using time initiated temperature. {Ans: Ambient}A heater installed in a public garage must be installed a minimum distance of ____________ above the floor? {Ans: 8 feet}Prior to retrofitting refrigerant systems containing 250 lbs. of refrigerant, what must be done? {Ans: Notify code officials}Any appliance in which the products of combustion at the point of entrance to the flue under normal operating conditions have a temperature of 1000 degrees is a ____________ appliance. {Ans: Low}With no air movement in a room ____________ can possibly occur? {Ans: Stratification}