2024 Ductless Application & Installation Test for Live

Ductless systems achieve a SEER up to?

19

Correct Incorrect Correct answer

26

Correct Incorrect Correct answer

34

Correct Incorrect Correct answer

42

Correct Incorrect Correct answer

A ductless outdoor must be connected to a ductless indoor only?

True

Correct Incorrect Correct answer

False

Correct Incorrect Correct answer

You can connect a ductless outdoor to a gas furnace and standard evaporator coil.

True

Correct Incorrect Correct answer

False

Correct Incorrect Correct answer

A proper heat load is?

not required since the system is variable capacity.

Correct Incorrect Correct answer

not required since the compressor is variable speed.

Correct Incorrect Correct answer

required due to minimum capacity and minimum run times.

Correct Incorrect Correct answer

equal to 400 square feet per ton.

Correct Incorrect Correct answer

System size is determined by?

Cooling load calculation.

Correct Incorrect Correct answer

Heating load calculation

Correct Incorrect Correct answer

the smallest load

Correct Incorrect Correct answer

the largest load.

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The 38MARB series maintain 100% heat capacity to?

40°

Correct Incorrect Correct answer

5°

Correct Incorrect Correct answer

32°

Correct Incorrect Correct answer

0°

Correct Incorrect Correct answer

Ductless system meter refrigerant at the___________?

Indoor Unit

Correct Incorrect Correct answer

outdoor unit

Correct Incorrect Correct answer

No metering device is used on ductless applications

Correct Incorrect Correct answer

both outdoor and indoor units

Correct Incorrect Correct answer

outdoor except the 38MURA series

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Ductless systems utilize a turbo encabulator in lieu of a metering device

Correct Incorrect Correct answer

Ductless systems operate in?

Fahrenheit temperature.

Correct Incorrect Correct answer

Celsius temperature.

Correct Incorrect Correct answer

A dimension somewhere between space and time. A place called the twilight zone.

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Heating compensation is used to calibrate return sensor to___________.

increase comfort.

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reduce overshooting temperature.

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reduce under heating.

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All of the above.

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The compensation offset is factory set the same for all indoor units?

True

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False

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The optional wall controls are____________?

interchangeable.

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unit specific.

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24 VAC

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5 VDC

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12 VDC

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either 5 vdc or 12 VDC

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A 24 volt interface can be used with any of our ductless systems?

True

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False

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A 24 volt interface requires a?

multistage thermostat.

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heat pump thermostat.

Correct Incorrect Correct answer

standard 1 heat 1 cool thermostat.

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BACnet controls are available for ductless systems.

True

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False

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The smallest capacity of an indoor unit is__________

9000 btu

Correct Incorrect Correct answer

12000 btu

Correct Incorrect Correct answer

6000 btu

Correct Incorrect Correct answer

2000 btu

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15000 btu

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18000 btu

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Cooling compensation is__________.

not adjustable.

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adjustable.

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A multi head ductless will ramp down all the way to meet the smallest load in the space?

TRUE

Correct Incorrect Correct answer

FALSE

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If a customer is complaining that the conditioned space is uncomfortable, it could be caused by?

Not enough refrigerant charge

Correct Incorrect Correct answer

Too much refrigerant charge

Correct Incorrect Correct answer

System being oversized

Correct Incorrect Correct answer

All the above

Correct Incorrect Correct answer

The Floor Console can be mounted flat on the ceiling?

TRUE

Correct Incorrect Correct answer

FALSE

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The size of the unit in the model number is the_____________.

maximum capacity of the unit

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minimum capacity of the unit

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nominal capacity of the unit

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If your piping exceeds the maximum length you ______________.

Increase liquid and suction pipe by 1 size.

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Run it anyway since the compressor can ramp up.

Correct Incorrect Correct answer

Reconfigure the installation since we cannot exceed max length

Correct Incorrect Correct answer

1/2″ – 3/4″ insulation must be added to the 40MBDQ air-handlers if installed in unconditioned space?

True

Correct Incorrect Correct answer

False

Correct Incorrect Correct answer

If the piping size of the indoor unit does not match the size of the fittings at the outdoor unit you use the adaptors or braze the proper size at _____________________.

the indoor unit

Correct Incorrect Correct answer

half way between

Correct Incorrect Correct answer

the outdoor unit

Correct Incorrect Correct answer

Insulation on the small refrigerant is _________________________.

Not needed because it is a liquid line

Correct Incorrect Correct answer

Needed because it is a low pressure low temperature line in cooling

Correct Incorrect Correct answer

Only required because of code requirement

Correct Incorrect Correct answer

What type of evaporator metering device is used in a multi-head ductless unit?

TXV at each indoor unit

Correct Incorrect Correct answer

Acutrol for each unit at the outdoor

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EXV at each indoor unit

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EXV for each indoor unit mounted in the outdoor unit

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EXV for each indoor unit mounted in the Indoor unit

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If your piping exceeds the maximum length you should _______________________

Increase liquid and suction pipe by 1 size.

Correct Incorrect Correct answer

Run it anyway since the compressor can ramp up.

Correct Incorrect Correct answer

Reconfigure the installation since we cannot exceed max length

Correct Incorrect Correct answer

The required controller for the system ____________________

wireless remote

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standard 24 volt thermostat with 24 volt interface

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BacNet communication

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communicating wall control

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any of the above

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The Floor Console can be mounted flat on the ceiling?

True

Correct Incorrect Correct answer

False

Correct Incorrect Correct answer

Insulation on the small refrigerant line is ______________________.

Not needed because it is a liquid line

Correct Incorrect Correct answer

Needed because it is a low pressure low temperature line in cooling

Correct Incorrect Correct answer

Only required because of code requirement

Correct Incorrect Correct answer

The system can only be proper charged by _________________________.

Super Heat

Correct Incorrect Correct answer

Sub Cool

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Beer can cold

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Weigh in the charge

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Proper pressure for leak test and final microns for evacuation are ____________________

200 PSI pressure and 1200 microns for 1 hour each

Correct Incorrect Correct answer

300 PSI pressure and 800 microns for 1 hour each

Correct Incorrect Correct answer

500 PSI pressure and 500 microns for 1 hour each

Correct Incorrect Correct answer

29″ vacuum = 500 microns?

True

Correct Incorrect Correct answer

False

Correct Incorrect Correct answer

If your vacuum pulls below 400 microns with the pump running and rises to 800 microns when shut off and holds you ________________________.

are good to go with final refrigerant charge

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have a leak that must be repaired.

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have a small leak No worries

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have moisture left that must be removed

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The filter/drier gets installed _________________.

Close to the indoor as possible

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6" from the outdoor unit

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It has one in the outdoor unit already

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None at all. There are screens installed to stop particles.

Correct Incorrect Correct answer

1/2″ – 3/4″ insulation must be added to the 40MBDQ air-handlers if installed in unconditioned space?

True

Correct Incorrect Correct answer

False

Correct Incorrect Correct answer

If the piping size of the indoor unit does not match the size of the fittings at the outdoor unit you use the adaptors or braze the proper size at

the indoor unit

Correct Incorrect Correct answer

half way between

Correct Incorrect Correct answer

the outdoor unit

Correct Incorrect Correct answer

The factory charged is for _______

25 ft. per liquid port

Correct Incorrect Correct answer

15 ft. per liquid port

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100 ft. of line set

Correct Incorrect Correct answer

Retrieving data. Wait a few seconds and try to cut or copy again.

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The line size is determined by ____________________.

outdoor unit ports

Correct Incorrect Correct answer

indoor unit ports

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line length

Correct Incorrect Correct answer

size of outdoor unit

Correct Incorrect Correct answer

Maximum lift on condensate pump is about _________________.

6 feet

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2 feet

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10 feet

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20 feet

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When installing a ductless outdoor unit with a gas furnace ______________________________.

no special controls required.

Correct Incorrect Correct answer

a 2 stage heat thermostat is required

Correct Incorrect Correct answer

a single pole double throw relay is required

Correct Incorrect Correct answer

a 24 volt interface, a heat pump thermostat and a single pole double throw relay is required.

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When installing a ductless outdoor unit with a gas furnace _____________________.

you leave the indoor txv.

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change the indoor txv with a piston

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remove any indoor metering device.

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remove any outdoor metering device.

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The difference between a standard flaring tool and a 410A flaring tool is _____________________?

thicker copper.

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a wider lip on the flare.

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a larger angle of the flare.

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Most leaks on mechanical fittings are due to ____________________.

improper flare.

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not enough torque.

Correct Incorrect Correct answer

too much torque.

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1 and 2

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1 and 3

Correct Incorrect Correct answer

Ductless indoor units ______________________.

are powered separately.

Correct Incorrect Correct answer

are powered from the outdoor unit.

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do not need power, only control wiring.

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Recommended wiring between the outdoor and indoor unit is ___________________.

14/3 stranded with ground.

Correct Incorrect Correct answer

18 gauge thermostat wire

Correct Incorrect Correct answer

14/2 with ground and a separate 16 gauge stranded shielded wire for communication.

Correct Incorrect Correct answer

14 gauge solid wire.

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P-traps are ___________________________.

needed if line set is over 20 ft. vertical

Correct Incorrect Correct answer

never needed.

Correct Incorrect Correct answer

needed if outdoor unit is on the roof.

Correct Incorrect Correct answer

needed if line set is over 50 ft. long.

Correct Incorrect Correct answer

The 24 volt interface __________________________.

can be used with a complete ductless system

Correct Incorrect Correct answer

can be used with a standard indoor and a ductless outdoor unit.

Correct Incorrect Correct answer

can be used with a standard outdoor unit and a ductless indoor unit.

Correct Incorrect Correct answer

must be used with a standard indoor and a ductless outdoor unit.

Correct Incorrect Correct answer

2 and 3

Correct Incorrect Correct answer

1 and 4

Correct Incorrect Correct answer

The 24 volt interface allows the outdoor unit to _________________________.

maintain variable speed capacity.

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work as a single stage

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work as a 2 stage

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work as a 2 speed

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On ducted equipment the display board and wireless control should be ___________________.

removed since the wireless control can not be used.

Correct Incorrect Correct answer

removed but put in truck for service later on.

Correct Incorrect Correct answer

left in place for service and setup.

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given to the homeowner to lose.

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