Posted: 8/9/2016 4:09:33 PM EDT
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I have a Trane A/C system I am installing. I just need to run the copper so I can get it charged.
Are the diameters of the two lines standard? I don't want to make two trips to the A/C place, and it would be an easier visit if I had a clue what I was asking for. The stubs on the existing units are 3/4"od and .37"od. Thanks! . |
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Quoted:
and install a suction line filter while you're at it........... Liquid line. Suction line filters break down over time. They are good for about a month for a system clean up and then need to be removed. Liquid line filters are good for the life of the system. |
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Add a LL drier. I'd like to see your braze joints  Ha. I can braze. A friend who does this stuff for a living gave me a "new" system he pulled out of a house. I'd like to get it installed so he can just come out and get it going with minimal effort on his part. I'm trying to forget I have gauges and have done auto a/c....
It's a 3 ton. |
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Remember. REF copper is measured OD not ID like the plumbers use This. Add an 1/8" to ID. 3/4 = 7/8. 1/4 = 3/8. As said above, line size is dependent on length of run and unit size. You should purge your lines with nitrogen while you burn also. Pressure test with nitrogen, release all but a pound or two of pressure, then pull vacuum. The remaining nitrogen will help displace moisture. |
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This. Add an 1/8" to ID. 3/4 = 7/8. 1/4 = 3/8. As said above, line size is dependent on length of run and unit size. You should purge your lines with nitrogen while you burn also. Pressure test with nitrogen, release all but a pound or two of pressure, then pull vacuum. The remaining nitrogen will help displace moisture. Quoted:
Quoted:
Remember. REF copper is measured OD not ID like the plumbers use This. Add an 1/8" to ID. 3/4 = 7/8. 1/4 = 3/8. As said above, line size is dependent on length of run and unit size. You should purge your lines with nitrogen while you burn also. Pressure test with nitrogen, release all but a pound or two of pressure, then pull vacuum. The remaining nitrogen will help displace moisture. Agree with you and then I disagree with you. There is 3/4 OD pipe. Used in AC systems. Refrigeration systems are 3/8 1/2 5/8 7/8 1-1/8 1-3/8 1-5/8 2-1/8 2-5/8 3-1/8 3-5/8 4-1/8 etc |
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Agree with you and then I disagree with you. There is 3/4 OD pipe. Used in AC systems. Refrigeration systems are 3/8 1/2 5/8 7/8 1-1/8 1-3/8 1-5/8 2-1/8 2-5/8 3-1/8 3-5/8 4-1/8 etc Quoted:
Quoted:
Quoted:
Remember. REF copper is measured OD not ID like the plumbers use This. Add an 1/8" to ID. 3/4 = 7/8. 1/4 = 3/8. As said above, line size is dependent on length of run and unit size. You should purge your lines with nitrogen while you burn also. Pressure test with nitrogen, release all but a pound or two of pressure, then pull vacuum. The remaining nitrogen will help displace moisture. Agree with you and then I disagree with you. There is 3/4 OD pipe. Used in AC systems. Refrigeration systems are 3/8 1/2 5/8 7/8 1-1/8 1-3/8 1-5/8 2-1/8 2-5/8 3-1/8 3-5/8 4-1/8 etc Of course there is. OP specifically said 3/4, I used that as an example. I recently put in a VRF system that used every size made 2-5/8 and smaller. |
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Liquid line. Suction line filters break down over time. They are good for about a month for a system clean up and then need to be removed. Liquid line filters are good for the life of the system. Quoted:
Quoted:
and install a suction line filter while you're at it........... Liquid line. Suction line filters break down over time. They are good for about a month for a system clean up and then need to be removed. Liquid line filters are good for the life of the system. |