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20 Cards in this Set
- Front
- Back
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List the procedures followed when installing a central air conditioner.
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1. Setting blower & condensingunit
2. Installing the duct work 3. Running the thermostat wire 4. Installing refrigerant lines 5. Installing condensation lines 6. Installing gas pipe 7. Installing flue |
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What is the advantage of locating the blower unit at the center of the house when possible?
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Easier and faster duct install
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Name four things to consider when setting the condensing unit?
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1. Proper air flow
2. Noise 3. Water drainage 4. Sun |
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What are the three things that you must watch for to prevent air from re–circulating in the condenser?
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1. Installing too close to other objects
2. Overhang too close to top 3. Condensing units too close together |
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When installing a condensing unit under an overhang, what is the least amount of distance that the overhang can be from the top of the condenser?
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4 ft
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Why is it important to properly size the duct work?
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Proper air flow
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How many C.F.M. do we need for every ton of air conditioning?
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400 per ton
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Approximately how much C.F.M. comes out of a typical register?
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100 cfm
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Which load are the ducts sized for the heating or cooling load?
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Cooling load
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What is the component called in the duct system that connects the furnace to the trunk line?
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Plenum
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The ________________ distributes the air to the branches.
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Trunk
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What is installed in the trunk line to make sure that we have the proper air flow all the way through the trunk line?
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Transitions
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When installing round duct together what must you do to be sure that the connection is sealed properly?
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Screw & Tape together
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How many feet apart do you install hanger strap on the duct work to make sure that it is supported properly?
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6 feet
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When do we insulate the duct work?
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Unconditioned spaces
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Why is duct work insulated?
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Prevent sweating, efficiency
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What are the two refrigerant lines called that is installed between the condensing unit and blower unit?
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1. Suction
2. Liquid |
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What will be the typical size of the liquid line when piping the condensing unit to the blower unit?
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3/8 inch
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What is the typical size suction line on a unit that is between 3 to 4 tons?
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3/4 inch OD
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Is soft or hard copper generally used to run the refrigerant lines on air conditioner?
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Soft copper
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