AHIT HVAC Exam Questions and Answers, Exams of Advanced Education

Download AHIT HVAC Exam Questions and Answers and more Exams Advanced Education in PDF only on Docsity! AHIT HVAC Exam Questions and Answers On most heat pumps during a heating season, the outside coil will go into a defrost cycle every 60-90 mins and last for - Answer- 1-2 mins a house that you are inspecting has and unit pilot. what is your req as an inspector? - Answer- to report the pilot was out a good sign that there is a crack or hole in the heat exchanger is - Answer- all answers strange smell at register irregular flame pattern when blower is on severe rusting of the exchanger what is the purpose of an accumulator - Answer- Keep liquid refrigerant out of the compressor the hartford loop in a steam system - Answer- Precludes siphon action if the unit develops a leak the two main components of an air cooled air conditioning system are - Answer- evaporator unit and the condensing unit Wall furnace vent is what type? - Answer- bw which of the following should be reported as an item needing replacement or repair within the next five years - Answer- any copper boiler over 10 years old why should a furnace not be operated - Answer- improper venting in a heat pump (heating mode) the evaporator is - Answer- outside what function does athe draft hood or draft diverter play on a heating unit - Answer- it protects the unit from potential down drafting what might happen if you have an older programmable thermostat and the inspector turns off the heating units safety switch - Answer- the thermostats program can be lost what type of vent is not recommended for the roof - Answer- powered