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Old 04-06-2010, 07:26 PM   #1
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is a charging R410a same as R22


is a charge the same on R410a as it is on R22? what would be the reading of a full charge on R410a.

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Old 04-06-2010, 09:20 PM   #2
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is a charging R410a same as R22


Not even close to the same. No offence but you should leave the charging to someone who know how and has the propper EPA certification.

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Old 04-06-2010, 09:40 PM   #3
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is a charging R410a same as R22


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Not even close to the same. No offence but you should leave the charging to someone who know how and has the propper EPA certification.
I am EPA certification and I been working and charging unit up for 13 year's. How ever this R410 isn't 13year old when I had all my training, but now my job are buying unit that have the R410a. and now I have to learn this. I guess all I want to know is what are the reading for R410a on a full charge the reading would read what.
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Old 04-06-2010, 10:11 PM   #4
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is a charging R410a same as R22


not trying to be mean but it sounds like you or your boss need to spring for a little training. There is more difference than just the pressures.

this is a DIY forum and training an AC tech is not within the means of the forum.
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Old 04-06-2010, 10:14 PM   #5
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is a charging R410a same as R22


You'll have to follow the subcool charts given with each piece of equiptment and matching coil. That's still the same as charging R22 but the pressures are not.
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Old 04-07-2010, 06:55 AM   #6
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is a charging R410a same as R22


LLB62777:

Go to our sister sites for contractors, and professionals.

There you can get more instructions.

http://www.hvacsite.com/f7/

http://www.contractortalk.com/f6/
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Old 04-07-2010, 10:20 PM   #7
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is a charging R410a same as R22


If you have a good understanding of R22 pressures and saturation temperatures, then 410A will come easy. Here's a chart to help you learn the higher 410A pressures. The saturation temperatures still follow the same rule. If you have below 32F on your suction side there is a problem. With R22 a 32F saturation temp would have a low side pressure of 58 psig. With 410A the pressure would be 100 psig. Buy another manifold, and don't cross contaminate R22 and 410A. Remember with 410A you should achieve a 500 micron vacuum and install a filter / drier on the liquid line, and always charge in liquid. Read the R410A FAQ - Here

How did you know when a R22 system was at a full charge? That is impossible to answer without knowing many factors about the system in question and the operating conditions.







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Old 04-08-2010, 06:23 AM   #8
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is a charging R410a same as R22


If you charge by weight you can't go wrong.
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Old 04-08-2010, 06:40 AM   #9
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is a charging R410a same as R22


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If you charge by weight you can't go wrong.
But its an expensive and time consuming method to check the charge on a PM.

Learning what SH and SC are, what they mean, and how to measure them is easier on customers wallets.

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