Charging With R410A - HVAC - DIY Chatroom Home Improvement Forum


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 07-03-2011, 05:09 PM   #1
Newbie
 
Join Date: Jul 2011
Posts: 3
Rewards Points: 10
Default

Charging with R410A


Our techs have been having a lot of service calls with new unit overcharged. Many of these units were started in spring with temps below 75 degrees.,which was never a problem with R22.
Units get very noisy,and customers call. Also it seems just a half pound charge sends gauges out of site.,more finicky! Any thought appreciated.

Advertisement

wahoo2 is offline   Reply With Quote
Old 07-03-2011, 06:12 PM   #2
Retired from the grind
 
gregzoll's Avatar
 
Join Date: Dec 2006
Location: Midwest - Central Illinois
Posts: 14,400
Rewards Points: 2,462
Default

Charging with R410A


So, what is your problem again?

Advertisement

gregzoll is offline   Reply With Quote
Old 07-03-2011, 07:20 PM   #3
Hvac Pro
 
Join Date: Nov 2008
Location: Winnipeg, Canada
Posts: 10,073
Rewards Points: 784
Default

Charging with R410A


Follow the superheat or subcooling chart that comes with the unit and warm the house up to 70-75 and you should not have a problem. Can safely and accurately charge a system down to 65 deg F OAT. They probably kept adding gas to try get the pressures up when it was cold thinking it was undercharged and now you can have 1/2 to 1 lb or more overcharge. Beer can cold suction line method does not work with R410 units or any over 10 SEER
__________________
"Cut it twice and it is still too short".

Last edited by yuri; 07-03-2011 at 07:34 PM.
yuri is online now   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
R410a acessories JJboy HVAC 4 05-25-2011 09:10 PM
Charging R410A system best practice JJboy HVAC 11 04-25-2011 06:59 PM
Which works better - R410a or R22 HP/AC kb3ca HVAC 7 08-17-2010 08:50 PM
is a charging R410a same as R22 LLB62777 HVAC 8 04-08-2010 06:40 AM
Is charging a R410a system the same as a R-22 system... paulie pizza HVAC 31 06-30-2009 11:20 AM




Top of Page | View New Posts