Which of the following is NOT an overall part of a plumbing system: A. potable water supply B . fixtures C. sewage discharge C. wastewater discharge
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Which of the following pollutants can increase by high indoor humidity? Volatile Organic Compounds Dust mites Radon All of the above
Negative pressure in a warm, humid climate can _________________. Pull water vapor into the home and create moisture problems through condensation in walls. Be caused by leaks in the return plenum, and leads to hidden moisture problems. Be solved by closing doors throughout the home to balance out...
For a maintenance inspection, what are the responsibilities of a licensed HVAC contractor? Who is ultimately responsible for providing preventative maintenance for a residence’s HVAC systems? The homeowner. A licensed and certified HVAC Technician. The original HVAC Contractor who installed the...
Match the terms with the correct definition. Definition Key Term 1) ____ Appropriately licensed person or persons responsible for maintaining the HVAC equipment. a) Access 2) ____ The visual examination and/or taking of appropriate measurements so as to assess a component’s physical condition and/or...
What is the first task for performing a maintenance inspection on a residential HVAC system? What are the requirements that an HVAC system should adhere to? What are two circumstances that can change the recommended frequency of scheduled maintenance inspections?
What types of assessments are needed in order to determine whether an HVAC system’s components should be cleaned or replaced? What are the four principles of particulate removal from HVAC systems? What are three precautionary measures to prevent cleaned HVAC surfaces from becoming re-contaminated...
What are the preventative maintenance steps for heat pumps that a customer can perform on their own?
What frequency should the following steps for HVAC preventative maintenance be performed? Cleaning air filters Cleaning ductwork Cleaning equipment cabinets Inspecting electrical elements Draining and cleaning condensate drain piping Changing refrigerant charge Cleaning and maintaining coil fins...
Which of the following is true about the cleaning procedure for cooling coils? Coils must only be cleaned with pure water solutions. If one, but not both, of the upstream or downstream faces of the coil can be completely accessed, the coil does not need to be removed to be cleaned properly...
Bleach ____________ be used for mold problems because _________________. Should not; it doesn’t remove mold spores, is highly corrosive, and is a skin irritant Should; it removes stains
Sketch the general configuration for trunk and branch and for the core hot water delivery system types and explain the overall concept of each design and why the core system saves energy and water.
True or false: HVAC systems may not achieve their expected efficiency due to improper installation or maintenance.
Conventional diagnostic tools include: Wireless temperature sensor Digital manifold Pressure-temperature charts Smartphone
Which set of diagnostic tools requires repeated manual temperature readings? Conventional diagnostic tools Smart diagnostic tools
True or false: Smart diagnostic tools replace the need for HVAC training.
The fraction of solar radiation admitted through a window is characterized by? (a) Visible Transmittance (b) Solar heat gain coefficient (c) Light-to-solar gain (d) None of the above
True or False: It’s better to have a central air-conditioning system that's too large than to have a homeowner complain about being uncomfortable at the hottest time of year. a. True b. False
True or False: 1. A thermostat is used to open and close the windows and doors. 2. A thermostat controls the operation of the heating and cooling based on a temperature setpoint defined by the occupant. 3. A smart thermostat connects to the internet and can be controlled remotely. 4. A programmable...
1. Heat pumps need special thermostat control to accomplish temperature setbacks because Parts are easily damaged by thermostat setbacks. Sudden changes in heating loads cause heat pumps to operate less efficiently. Heat pumps cannot communicate with conventional programmable thermostats.