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HVAC Good Duct Design

Quiz Questions

1. HVAC Good Duct Design 1
According to the above picture, what is the name of this supply duct system? (Refer to Page-3)
Perimeter Loop System
Trunk and Branch System
2. Properly designed and installed duct systems can have efficiencies of 80% or more for little or no additional cost, potentially saving a homeowner __________or more per year in heating and cooling costs.
$50 to 200
$30 to 70
3. A perimeter loop system-uses a perimeter duct fed from a central supply plenum using several feeder ducts. This system is typically limited to houses built on slab in cold climates and is more difficult to design and install.
4. Air distribution ducts are commonly constructed from sheet metal, rigid fiberglass duct board, or flexible nonmetallic duct. Selection of duct material is based on __________________.
price, performance, and installation requirements
aesthetics beauty and appearance
5. To prevent supply air from being swept directly up by kitchen, bathroom, or other exhaust fans, the distance between supply registers and exhaust vents should be kept as small as possible.
6. Air distribution system should be designed obeying which manual?
Air Conditioning Contractors of America’s (ACCA’s) Manual D: Residential Duct Systems
North America Air Conditioning Society (NAACS) Manual D: Residential Duct Systems
7. According to the Air Conditioning Contractors of America’s (ACCA’s) Manual D: Residential Duct Systems, how many steps are required to follow in the design of an air distribution system to ensure efficiency and comfort.
12 steps
8 steps
8. When is it more efficient to use two or more separate heating and cooling systems, each with its own duct system?
Two-story home
Single-story home
9. Flex duct is easily torn, crushed, pinched, or damaged during installation. It has the highest resistance to air flow.
10. HVAC Good Duct Design 2
According to the above picture, name the specific technique? (Refer to page-4) -Return Air Techniques -Reoccurrence Air Techniques
The ‘product’ was in a ‘defective condition [resulting in a product that is] unreasonably dangerous’. Defects can be created by manufacture, assembly, design, warning labels, marketing, etc.
The defendant was in the ‘stream of commerce’ that produces the product and/or delivers the product to the customer (manufacturer, subcontractor, wholesaler, distributor, retailer, etc.).