Air Conditioning- Final
One drawback of using custom made, pre measured duct sections is that - answer
Sharp edges, incorrect measurements, altering duct sections is difficult. All of the above
What two fasteners are used with sheet metal
square and rectangular duct? - answerS fasteners clips and drive clips
What fastener is commonly used with round flexible duct? - answerSelf tapping screws
A good way to fasten insulation to the inside
of sheet metal duct is to use ____. - answerTabs and adhesives
What two fasteners are used with fiberglass
duct? - answerstaples and tape
Used at the end of a metal duct run will help reduce any noise that may be traveling
through the duct - answerFlexible duct
A boot in a duct system is used - answerbetween the branch duct and register
A trap in the condensate line prevents ____. - answerair and foreign material from being
drawn up into the drain line
An auxiliary drain pan under an air handler is required when the air handler is installed -
answerattic, drop ceiling, heavy traffic area
After refrigerant lines have been installed they should be evacuated to a _____ vacuum
- answerDeep
One purpose of a flexible duct connector in a duct system is to reduce the transmission
of noise and vibration. - answerTrue
Lining a piece of duct is accomplished by using tabs and washers and/or glue. -
answerTrue
Power to the control transformer is controlled by the conditioned area thermostat -
answerFalse
When hanging a horizontal air handler, it should be pitched toward the drain port for
proper condensate removal. - answerFalse
, The sun shining on the outdoor section of the air-conditioning system has a direct affect
on the operation of the unit. - answerFalse
When installing a split air conditioning system with a remote condensing unit, the line
set may be altered if the standard length was incorrect for installation - answerTrue
When removing the rubber plugs from a line set, the hiss indicates that the tubing is not
leaking before installation - answerTrue
When line sets have been altered, they may not be treated as self contained systems of
their own - answerFalse
Once the power has been connected to the condensing unit of a package air
conditioner, it is a good idea to start the compressor immediately to make certain it runs.
- answerFalse
A fitting used to change the size of a square
or rectangular duct is called a _______. - answerTransition
A round to rectangular fitting is called a - answersquare to round transition
A split central air conditioning system is installed with the control transformer located in
the attic hung air handler and the condensing unit located outside. The low voltage wire
from the thermostat is run to the - answerAir handler
The typical gauge wire that is used in low voltage control circuits is - answer18 gauge
Before a system is evacuated, all piping
should be ____________________. - answerLeak checked
Homeowners can cut utility bills by ___ % or more by following energy audit
recommendations - answer15%
According to the US department of energy 43% of the energy used by the average
home goes toward - answerSpace heating and space cooling
The home's exterior is also known as the ____. - answerShell
Flexible products made from mineral fibers such as fiberglass and rock wool are known
as - answerRolls and batts
The higher the -value the better your walls and roof will resist the transfer of heat -
answerR value
Cavity insulation can be installed at levels up to ____ in a 2 in. x 4 in. wall. - answerR-
15
One drawback of using custom made, pre measured duct sections is that - answer
Sharp edges, incorrect measurements, altering duct sections is difficult. All of the above
What two fasteners are used with sheet metal
square and rectangular duct? - answerS fasteners clips and drive clips
What fastener is commonly used with round flexible duct? - answerSelf tapping screws
A good way to fasten insulation to the inside
of sheet metal duct is to use ____. - answerTabs and adhesives
What two fasteners are used with fiberglass
duct? - answerstaples and tape
Used at the end of a metal duct run will help reduce any noise that may be traveling
through the duct - answerFlexible duct
A boot in a duct system is used - answerbetween the branch duct and register
A trap in the condensate line prevents ____. - answerair and foreign material from being
drawn up into the drain line
An auxiliary drain pan under an air handler is required when the air handler is installed -
answerattic, drop ceiling, heavy traffic area
After refrigerant lines have been installed they should be evacuated to a _____ vacuum
- answerDeep
One purpose of a flexible duct connector in a duct system is to reduce the transmission
of noise and vibration. - answerTrue
Lining a piece of duct is accomplished by using tabs and washers and/or glue. -
answerTrue
Power to the control transformer is controlled by the conditioned area thermostat -
answerFalse
When hanging a horizontal air handler, it should be pitched toward the drain port for
proper condensate removal. - answerFalse
, The sun shining on the outdoor section of the air-conditioning system has a direct affect
on the operation of the unit. - answerFalse
When installing a split air conditioning system with a remote condensing unit, the line
set may be altered if the standard length was incorrect for installation - answerTrue
When removing the rubber plugs from a line set, the hiss indicates that the tubing is not
leaking before installation - answerTrue
When line sets have been altered, they may not be treated as self contained systems of
their own - answerFalse
Once the power has been connected to the condensing unit of a package air
conditioner, it is a good idea to start the compressor immediately to make certain it runs.
- answerFalse
A fitting used to change the size of a square
or rectangular duct is called a _______. - answerTransition
A round to rectangular fitting is called a - answersquare to round transition
A split central air conditioning system is installed with the control transformer located in
the attic hung air handler and the condensing unit located outside. The low voltage wire
from the thermostat is run to the - answerAir handler
The typical gauge wire that is used in low voltage control circuits is - answer18 gauge
Before a system is evacuated, all piping
should be ____________________. - answerLeak checked
Homeowners can cut utility bills by ___ % or more by following energy audit
recommendations - answer15%
According to the US department of energy 43% of the energy used by the average
home goes toward - answerSpace heating and space cooling
The home's exterior is also known as the ____. - answerShell
Flexible products made from mineral fibers such as fiberglass and rock wool are known
as - answerRolls and batts
The higher the -value the better your walls and roof will resist the transfer of heat -
answerR value
Cavity insulation can be installed at levels up to ____ in a 2 in. x 4 in. wall. - answerR-
15
