Hvac final accurate - Study guides, Class notes & Summaries

HVAC Final Exam Accurate Questions & Answers(Rated A+) What is an HVAC System? - ANSWER all the items needed to maintain thermal comfort within a space or group of spaces What are the four components of an HVAC system? - ANSWER Fans Pumps Compressor Evaporator What is a PTAC? - ANSWER Packaged Terminal Air Conditioner What is a PTHP? - ANSWER Packaged Terminal Heat Pump List the heat transfer equipment (3) - ANSWER Boiler Chiller Coil What is a zone? - ANSWER A zone is a s...

HVAC Final Exam Electrical For Air Conditioning Accurate 100%(Graded A+) When using a low voltage T-stat for heating and cooling, when would there be a jumper between Rh and Rc? Select one: a. When using a single transformer system b. When heating with an oil boiler c. When heating with a gas boiler d. When using a two transformer system - ANSWER A) When Using a single transformer system Digital thermostats usually display temperature, time of day, programming and operating status. Sel...

Hvr 110 HVAC final exam Accurate Questions & Answers! Furnace - ANSWER The air flow on most structures that use a fossil fuel for a heat source have a___that would be used as an air supply. Control loop - ANSWER Almost all control systems use a___to control the temperature with in a given structure, space, or zone. Troubleshooting - ANSWER A___chart is a graphical representation of a troubleshooting procedure for a particular unit. Overload - ANSWER A___is an electrical device that p...

HVAC-R Final Exam Accurate 100%(Graded volt amps - ANSWER Transformers are normally rated in? true - ANSWER An insulated jumper may be used to temporarily jump a component in an electrical circuit(true or false)? divided by 10 - ANSWER When using a 10 wrap multiplier the reading on the meter must be? ladder diagram - ANSWER An electrical line wiring diagram is often called? pictorial diagram - ANSWER A wiring diagram that shows the approximate location of components is called? cl...

HVAC Final Exam Accurate Questions a unit is operating with a lower than normal suction pressure the probable cause is - ANSWER a restricted drier heat absorbed by the refrigerant in the evaporator is rejected at the - ANSWER condenser the components that divide the high and low side of the mechanical refrigeration cycle are the - ANSWER compressor discharge valve and metering device what is the purpose of purging the service manifold - ANSWER remove air moisture to transfer refriger...

HVAC 1 Final Exam Review Accurate 100 Spiral wound gaskets are primarily used on - ANSWER high temperature high pressure systems lip type seals are used primarily - ANSWER on rotating shafts The side force applied at right angles to a bearing and shaft such as that applied from a pulley is called a - ANSWER radial load A type of anti-friction bearing is a - ANSWER ball bearing If there is darkened, yet still oily grease present on a failed bearing, a likely cause of failure is - ANS...

HVAC Electrical Final Test Complete QuestiSplit-phase motor PSC CSCR Shaded pole motor Resistance reading to ground from the terminal of a good compressor CSR Best starting and running single-phase compressor - ANSWER A. Uses a start and run winding B. Uses a run capacitor C. Uses a run capacitor, start capacitor, and potential relay D. Simplest motor E. 3 megohms F.Only uses a start capacitor G. CSCR motor How much resistance will be measured in a circuit ...

Hvac 208 final exam Accurate Questions And What is the function and operation of a reversing valve - ANSWER Reverses refrigerant flow and provides both heating and cooling. Diverts the discharge gas. What are common failures of reversing valves and causes - ANSWER Stuck valve Overheating Bad coil Leaking by from discharge gas flowing back into the suction line How is metering of refrigerant accomplished with a heat pump? - ANSWER We need to add check valves bypass lines and bi-direction...

Hvr 110 HVAC final exam Accurate Questions Furnace - ANSWER The air flow on most structures that use a fossil fuel for a heat source have a___that would be used as an air supply. Control loop - ANSWER Almost all control systems use a___to control the temperature with in a given structure, space, or zone. Troubleshooting - ANSWER A___chart is a graphical representation of a troubleshooting procedure for a particular unit. Overload - ANSWER A___is an electrical device that protects a load...