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Cetp 4.3(questions & answers)A+ rated
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Cetp 4.3(questions & answers)A+ ratedA customer wants to install a 10,000 btu unvented room heater in their bathroom. Would you advice
them to do so? - correct answer ✔✔No
What type of appliances are constructed so that all air for combustion is derived directly from the
outdoors through one duct or pipe, and all flue gases are discharged to the outdoors through another
duct or pipe. - correct answer ✔✔Direct vent
Residential propane appliances categories - correct answer ✔✔Cat 1, 2, 3, and 4
Name plates are required when installing a ____ appliance - correct answer ✔✔Listed
Unlisted room heaters are prohibited for use in bathrooms if the btu rating is ____ or less according to
code - correct answer ✔✔6000 btu's
Unlisted, gas, food service counter appliances must be at least ____ from any combustible material -
correct answer ✔✔12 inches
Name two factors you must consider when selecting an appliance for a given application - correct
answer ✔✔Venting and combustion air
_____ is a measure of thermal resistance used in the building and construction industry - correct answer
✔✔R value
What method of calculating needed combustion air is used when the air infiltration rate is unknown -
correct answer ✔✔Standard calculation method
When determining the air infiltration rate using the KAIR method, the following must be determined -
correct answer ✔✔Calculate ACH, size combustion air openings, determine building parameters
, Which method is used when supplying additional air to a structure by creating two permanent openings
in a single room, one on top and one on bottom, each 12 inches from the ceiling or floor - correct answer
✔✔Two-openings method
The three sources for supplying additional air to a structure that is found to have an inadequate air
supply are indoor air, outdoor air, and ____ - correct answer ✔✔Combination indoor and outdoor air
The three types of venting systems are natural draft, direct, and ____ draft venting - correct answer
✔✔Mechanical
The two basic ways natural draft systems vent - correct answer ✔✔Through lines masonry chimneys and
metallic gas venting materials
In a sealed combustion direct vent appliance - correct answer ✔✔Combustion air is separate from where
the appliance is located, combustion air is obtained from and discharged to the outdoors
A typical natural draft venting system has several components, some of which include - correct answer
✔✔Draft hood
The common type of vent material used in a natural draft venting system, made with double walls, forms
a continuous flue passageway from a gas appliance to a vent termination and heats up quickly - correct
answer ✔✔Type B-vent
A single-wall venting cannot be used under which circumstances - correct answer ✔✔In an attic, in a wall
or floor, or outside in regions where the 99% winter design is below 32 degrees Fahrenheit
What code book is referred to when sizing venting - correct answer ✔✔NFPA 54
NFPA 54 venting tables assume the lack of ___ - correct answer ✔✔Obstructions
A vent connector must be routed to a vent using the ____ possible route - correct answer ✔✔Shortest
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