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Old 02-23-2012, 09:00 AM   #1
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suction line


why is the suction line insulated
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Old 02-23-2012, 09:49 AM   #2
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suction line


prevents sweating and heat gain to refrigerant which can cause compressor over heating.
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Old 02-23-2012, 03:40 PM   #3
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suction line


from the air handler to the condenser is a heat gain then the cycle repeats itself and sweating as mentioned...so think of the hot summer sun banging that line back out without the armaflex wrap that is a load and right into your wallet with a higher suction temperature...the more it sweats the better
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Old 02-23-2012, 04:00 PM   #4
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Just to prevent sweating.

If you had a 20 foot long 7/8" vapor line that had a refrigerant gas temp of 55F, and it was exposed to an ambient temp of 154F. it would only gain 1,060 BTUs of heat.
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Old 02-23-2012, 04:08 PM   #5
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Quote:
Originally Posted by beenthere View Post
Just to prevent sweating.

If you had a 20 foot long 7/8" vapor line that had a refrigerant gas temp of 55F, and it was exposed to an ambient temp of 154F. it would only gain 1,060 BTUs of heat.
you musta wanted to post that real bad, Been..but i think i heard the OPs head explode...


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Old 02-23-2012, 05:44 PM   #6
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Quote:
Originally Posted by beenthere View Post
Just to prevent sweating.

If you had a 20 foot long 7/8" vapor line that had a refrigerant gas temp of 55F, and it was exposed to an ambient temp of 154F. it would only gain 1,060 BTUs of heat.
On earth not mars .. please
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Old 02-23-2012, 05:52 PM   #7
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On earth not mars .. please
Some attics exceed 155F.

At an ambient of 123F, the same line would only gain 900 BTUs.
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Old 02-24-2012, 12:22 PM   #8
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suction line


Insulation actually acts as a resistance to heat rejection to and heat rejection from atmosphere. When the suction line is not insulated, the refrigerant gains heat and it gets warmer. This warm refrigerant which was supposed to enter at a lower temperature now enters at a higher temperature and thus compressor needs to perform more work than before.
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