Electronic air cleaners - Study guides, Class notes & Summaries

HVAC NATE Heat Pump Exam (Latest 2024 / 2025 Update) 100% Correct Questions and Verified Answers | Grade A Question: What is the capability of electronic programmable room thermostat to reset the set point early so that the space temperature reaches a set temperature at a specific time called? Answer: Computed recovery Question: What is an important reason for using electronic controls? Answer: They can make decisions based on many inputs. Question: When using a dou...

The steps to aggressively controlling the contamination indoor air would involve__. - Answer locating and eliminating all sources of contamination while both providing adequate ventilation and methods for cleaning the air. A house built on property whose soil is rich with uranium. the occupants of the house may__. - Answer Be exposed to radon gas and may be more susceptible to lung cancer. Electronic Air Cleaners generally have __. - Answer Ionizing sections, prefilters, and charc...

G2 Gas Technician Module 23 Revised with Verified Answers Why are air cleaners installed ahead of heating or cooling coils and air conditioners? To protect the equipment from dust and increase efficiency What are two ways in which a mechanical filter could restrict air flow? Dirty Air Filter and Incorrect Air Filter Name three types of air cleaners that can be used with a forced-air furnace? Media, electrostatic, and electronic Which type of air cleaner is usually the least expensive? Media/M...

What precautions are required when mounting any gas furnace on a wood platform in an attic? Ans: None The gas control valve may be damaged if exposed to an inlet pressure above: Ans: 14 in. W.C. How many elbows and joints should a vent connector have: Ans: As few as possible to reduce resistance of flue gases What conditions, if any may a technician route the exhaust of the furnace into the exhaust vent of the water heater? Ans: Under no conditions may you use the water heater exhaust...

Why are air cleaners installed ahead of heating or cooling coils and air conditioners? - Answer To protect the equipment from dust and increase efficiency What are two ways in which a mechanical filter could restrict air flow? - Answer Dirty Air Filter and Incorrect Air Filter Name three types of air cleaners that can be used with a forced-air furnace? - Answer Media, electrostatic, and electronic Which type of air cleaner is usually the least expensive? - Answer Media/Mecha...

A technician has determined a supply in a flexible duct system is leaking. What should be checked? - ANSWERAll connections inner and outer layers. Electronic air cleaners can operate with internal voltages as high as? - ANSWER5000v Why do some electromechanical type thermostats require connections to both the hot side and common side of the low voltage transfromer - ANSWERDisplay lights must be powered using both sides of the line the continuity reading on a functional fuse will be - AN...

Why are air cleaners installed ahead of heating or cooling coils and air conditioners? correct answers To protect the equipment from dust and increase efficiency What are two ways in which a mechanical filter could restrict air flow? correct answers Dirty Air Filter and Incorrect Air Filter Name three types of air cleaners that can be used with a forced-air furnace? correct answers Media, electrostatic, and electronic Which type of air cleaner is usually the least expensive? correct ans...

High-Voltage AC Holiday Detector - This uses a 110 V or 220 V power supply. The AC detector is based on the principle of the Tesla coil and does not use a ground wire. The probe emits a blue corona, which is attracted to any ground. High-Voltage Constant Current DC Holiday Detector - This instrument is used to detect coating holidays in dielectric coatings. Once the voltage is set, pass the electrode over the sur- face. A spark will arc through the air gap, causing the detector to emit an ...

C20 Practice Test with Updated Questions and Verified Answers What would not be the problem if an electric motor failed to run? the bearings in motor are too tight or lack oil the thermostat controlling motor is defective the power is not on the motor is not generating enough milliwatts ANSWER The motor is not generating enough milliwatts Electronic air cleaners will remove what percentage of particles from the air? 20% 34% 80% 95% ANSWER 80% Where are the filters located in...

G2 Gas Technician Module 23 Revised Test Questions and answers with 100% Complete Solutions | verified &updated 2024 Why are air cleaners installed ahead of heating or cooling coils and air conditioners? - To protect the equipment from dust and increase efficiency What are two ways in which a mechanical filter could restrict air flow? - Dirty Air Filter and Incorrect Air Filter Name three types of air cleaners that can be used with a forced-air furnace? - Media, electrostatic, and electronic ...