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ghil
20-12-2015, 09:14 AM
Hello to all members,
please give me information about 410A v R22.
We are charging R22 in 1.5 ton air conditioning unit about 60-70 pound what about air condition like 410A how much refrigerant required in pound.

mikeref
20-12-2015, 09:41 AM
18,000 Btu A/c on R22 cannot be changed to R410A.
R410A A/C's suction pressure is much higher. 115 to 120 ish Pounds per Square Inch is basically the normal under load conditions.

mattmechanic
01-01-2016, 02:39 AM
R22 to R410a is not compatible
i have been doing R22 to R438A with an oil additive and so far have been successful with no known issues with systems operating for the last 4-6 months

Belize Service
25-02-2016, 05:23 AM
I have been out of the country for 10 years now. I haven't been really keeping up with the information. Where I am here in Belize, Mini Splits are the norm and very little of that. It's a poor country so not much of it. My question is this. I have a customer with a 5 ton Nordyne R-22. We live on the beach so the outside unit is in bad shape. I want to replace the outside unit with an R-410-A condenser. Providing the check flow regulator is the same, will the system operate with the new piston provided as long as I flush the evap coil and lines. Has anyone had experience with this. This is all new Technology here lololol and I was to retire here but they found out what my profession was. Thanks

Grizzly
25-02-2016, 09:34 PM
Rather than repeat and adding to what fellow engineers have already said.
Just watch this Video!
https://www.youtube.com/watch?v=qxwcVKjJuSQ

Are you going to get the customer to sign a disclaimer? so should any of the components fail you cannot get sued?
If you don't know most of the issues discussed you certainly are not going to (I assume?) have the correct equipment designed to work on R410a.
Trust me the Pressures in a R410a system are 60% higher than R22.
Here in the UK we will pressure test a new system to approx. 675psi to accommodate our Highest average ambient temperature.
The loading in Belize will be way above that, never mind he 80% Humidity!
Don't miss the part about Mineral Oils and POE Oils!
Grizzly

airtrackinc
01-04-2016, 05:06 AM
R-22

Often referred to by a brand name like *****
As of 2010, R-22 was discontinued for use in new air conditioning systems
R-22 is a hydro-chlorofluorocarbon (HCFC) which contributes to ozone depletion
R-410A

Often referred to by a brand name like Puron
Has been approved for use in new residential air conditioners
Is a hydro-fluorocarbon (HFC) which does not contribute to ozone depletion
Will become the new standard for U.S. residential air conditioning systems in 2015

Recoilzn
07-04-2016, 04:45 PM
I believe he is asking the correct charging pressure for R410a not retrofitting.

Josip
07-04-2016, 07:05 PM
Hi, ghil :)


Hello to all members,
please give me information about 410A v R22.
We are charging R22 in 1.5 ton air conditioning unit about 60-70 pound what about air condition like 410A how much refrigerant required in pound.

Here is something interesting:
http://www.brighthubengineering.com/hvac/62099-alternative-refrigerants-for-r22/

but .... please, check this link too:

http://www.refrigeration-engineer.com/forums/showthread.php?1727-R-417-A-direct-replacement-of-R-22

Seems some other refrigerants are better replacement for R22 ....:eek:

You can check a lot of other useful things on RE forums .... just need some time ..

Best regards, Josip :)

mikeref
08-04-2016, 09:10 AM
I believe he is asking the correct charging pressure for R410a not retrofitting.

I believe you are right. Misread charging for changing. :( Points going your way.:)
A/C's have a specific weight of refrigerant on the outdoor unit Compliance sticker...in Metric.

Markysparky
23-07-2016, 12:09 PM
407c can replace r22 with a oil changeout too.

AGSelec
13-01-2017, 11:18 AM
R22 to R410a is not compatible
i have been doing R22 to R438A with an oil additive and so far have been successful with no known issues with systems operating for the last 4-6 months

How has R438A been going for you now and what is the additive. I have a 4kg r22 system and looking at changing to r438a after repair. It has a Copland rotary compressor

chemi-cool
13-01-2017, 06:18 PM
I use for a few years now R438A in various systems - From water chillers to milk cooling units. works fine. TXV adjustment is required some times. No oil change.

If you work in temp below 0 I would suggest R422D. I use it for cooling units is CO2 tanks at -30C evaporating temp.