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1) There are … basic approaches to ventilating a house.
a) two
b) three
c) four
2) Three basic functions of ventilation are …
a) to replace the used air, to cool, to heat
b) to remove products of combustion, to heat, to low pressure
c) to replace the used air, to avoid humidity, to prevent dust accumulation
3) Spot ventilation is used …
a) for sources that can move from place to place
b) for localized sources
c) for industrial purposes
4) General ventilation runs …
a) when the source is producing pollutants
b) when needed
c) continuously
5) Cooking odors can be removed by …
a) spot ventilation
b) exhaust fan
c) both
6) Natural ventilation depends on … critically.
a) house localization
b) size and localization of openings
c) pressure differences
7) Natural ventilation is ineffective in … climates.
a) cold
b) hot
c) humid
8) Main advantage of power ventilation is …
a) cost effectiveness
b) providing ventilation anytime
c) providing limited attic temperature
9) Wholehouse ventilation systems have … main types.
a) two
b) three
c) four
10) System of ventilation appropriate for all climates is …
a) supply and exhaust system
b) balanced ventilation system
c) balanced, heat-recovery ventilation system
3. Read and translate the given part of the instruction “Installing a Bathroom Fan”, filling in the missing words:
| a) a motorized exhaust fan | e) air flow | i) run | m) flexible duct |
| b) manufacturer's | f) vent pipes | j) ductwork | n) exhaust |
| c) moisture | g) outside wall | k) exhaust | |
| d) steel pipe | h) odors | l) joists |
You can install (1)___ to help remove excessive (2)___ and unpleasant (3)___ from the bathroom. Usually the fan is installed in the ceiling between two (4)___. The fan will have (5)___ connected to it and (6)___ through the roof or an (7)___. Do not make the mistake of venting the fan to the attic. You could end up with mold and mildew forming all over the place and causing a serious health risk.
Whether you put in the fan or hire someone, it is important to buy a large enough fan and to run the (8)___ the right way. You will need to determine the CFM (cubic foot per minute). This is the amount of air removed from the space per minute.
It easy to figure out the fan size, just multiply the square footage of the bathroom by 1.1. For example, a 140-square-foot bathroom would need a ventilation fan with a 154 or higher CFM.
When you (9)___ the duct work, follow the fan (10)___ specifications for the fan you are installing. If the (11)___ port on the side of the fan calls for 4-inch pipe, install only a 4-inch-diameter pipe. Although some ventilation fans may allow (12)___, rigid stainless (13)___ will give you a more durable and efficient assembly. The smooth surface of rigid piping allows for better (14)___.
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