R22 vs R404 differences - HVAC-Talk
2012年5月8日 · R404 is a better A/C refrigerant because of the lower temps but works like R410 in heating. The discharge temps are lower than the normal for what an R22 system would see. …
r22 convert to r404 for med temp - HVAC-Talk
2007年7月2日 · compressor is a 3RA1-0310-TAC AT 20/120 33300 BTU listed with r502, COMPARED TO 25800 BTU WITH R22. THE DELI CASES REQUIRE 26000 BTU.
Old Hussman Evaproator Coil - Question about R404 conversion
2024年9月29日 · Was it possible to retrofit R404 into coils that were originally running R12/R22/R502? I know that there is a significant increase in operating pressures on R404 …
R22 vs R404A - HVAC-Talk
2015年9月21日 · To get a good idea of what to expect in capacity difference when using different refrigerants in the specific condensing unit, I have copied a section of the condensed capacity …
Normal 404a operating pressures? - HVAC-Talk
2014年7月6日 · I am a Journeyman, but I strictly work on residential units. Never had to work on a 404a system. A friend of mine had me check out a reach in freezer at his restaurant.
superheat on r-404a - HVAC-Talk
2014年6月5日 · yeah, That's why I'm throwing this out there. I was thinking maybe with the low temp. that a swing to the minimum 3 deg. S.H. might be o.k.
r410a vs r404a - HVAC-Talk
Join Date Sep 2013 Posts 2 Post Likes Likes (Given) 0 Likes (Received) 0 Dislikes (Given) 0 Dislikes (Received) 0
R404A Freezer - HVAC-Talk
2016年9月13日 · First time using and installing a freezer split system with 404A. Can some one tell me LP,HP settings. Box is using a LL Soleniod for pump down operation with stat.System …
Walk in Freezer and Cooler with 404a - HVAC-Talk
2017年1月26日 · Then TEMP part of the P/T chart is the "Guideline" that you are talking about. KindaSorta,95*CST is the "norm" for a 70* ambient for AC&R. R22 is about 182psig.So,what …
R404 walk in - HVAC-Talk
2021年7月6日 · I’m n ac guy trying to help a buddy with walk in with r404. Can only get 20 degrees super heat liquid temp 112. 305 psi. Suc 50 psi. This is a new start up Txv is open all …