Original message
| Xenos
Webmaster 
|  "Why 407C"
, posted Sun 24 Jul 22:02  
I have been seeing quite a lot of 407C commercial systems this summer, so much so that I would say 407C is becoming the leading refrigerant. I know the system pressures are about the same as 22 but It’s a blend and from what I am told. If you loose more than 10% of the charge you have to install all new refrigerant. Tomorrow I have to start up a dehumidifier that takes 480lbs I cant imagine having to dump this charge in a few years just because of a small leak. Any of you have any insight as to why this refrigerant is gaining so much ground?
Xenos.
The best way to escape a problem is to solve it.
|
|
Replies:
|
| Banger
| "Re(1):Why 407C" , posted Thu 28 Jul 06:53
407C has been the replacement of choice for manufacturers outside the US already, so It's already in use and field tested. It replaces R-22 and R502, and because of the pressure similarities it doesn't require and design modifications in the equipment, as opposed to R410A, which runs at about 30% higher pressures.
|
| | MasterTech
| "Re(2):Why 407C" , posted Thu 28 Jul 16:56
Is 407C a drop in for 22 or must u worry about oil? I just dont like 410A.
|
| | Xenos
Webmaster
| "Re(3):Why 407C" , posted Thu 28 Jul 17:43
It uses POE, So it's technicaly not a dropin. I have been doing some research. According to DuPont they didn’t find any loss in performance until there was 4 losses of refrigerant of 50%. Therefore my original comment was incorrect as obviously it can be topped up.
Xenos.
The best way to escape a problem is to solve it.
|
|
|
