aea4440 cap tube length

[cfcitywide]

I have a restriction in a russell med temp box. I have a supco B2 (.040 id)which says to use 72" for 1/3hp med temp and 38" for 1/3hp high temp. It doesn't have a listing for "hot shot". I will run a 20* evap so can you tell me what length to run. The refrigerant was 134a so I can't use the same size as the old one. It's a new account and the service records show that the cap has been trimmed down several times withiut mention as to how much or how many times at that.

[Wheelbaron]

Why are you using Hot shot? It is only a 39% compatible replacement for 134-A. I would go with a 401-A or 409. Don't forget to adjust cap length for air cooled or static coils. However as Hot Shot is a 100% drop in for R-12 I would use the R-12 chart.

[cfcitywide]

The supco chart doesn't specify the in between. If I contact supco with a btu rating for the mentioned compressor @ 20* perhaps they could give me more detailed info (something a little less broader than 40").I don't think that'll happen or it seems they would have it there lit that came with the cap tube. It's an air cooled condenser. Do you know the rated BTU @ 20* for the AEA4440?

[k-fridge]

If it used 134a before, why not go back with 134? It works well at medium temp.

[cfcitywide]

I agree that Hot Shot is Horse s*t however I couldn't resist picking up 15 jugs of it at an auction last year for $30.00 a jug.

Do you happen to know what evap temps supco is using to differentiate from "low, med, and high" on their cap tube selection chart?

I suppose I'll try the suggested length of 78" for med temp and reduce from there.

[Wheelbaron]

I got the 38% from Hot Shot web site. It is 100% drop in for R-12, but 38% compatible with 134-A

[270wsm]

I got the 38% from Hot Shot web site. It is 100% drop in for R-12, but 38% compatible with 134-A

Can you post a link to where you read that? I have been all over the icor website and dont see that anywhere. all i can find is its 20% MORE efficient than 134A.

[selfemployed]

A True t23 reach-in cooler uses an ae4440 on 134a with 12" .046 ID. cap tube.

[Wheelbaron]

http://www.r-414b.net/

Here you go, not sure how reliable this site is, so take it with a grain of salt...:confused:

[icemeister]

A True t23 reach-in cooler uses an ae4440 on 134a with 12" .046 ID. cap tube.

12" of .046 ??? :confused:

Is that a typo?;)

[selfemployed]

12" of .046 ??? :confused:

Is that a typo?;)

I can't get anything by you and my fingers aren't as flexible either :D

Yes 12 feet of .046 ID
Thanks for bailing me out again

[wkfldal]

am i the only one who thought to remind him that low temp is freezer, med temp is cooler, and high temp is ac??? kinda makes his choice simpler imho

[cfcitywide]

after several attempts I finished with 46" 0f .040 (BC2) cap tube. May of cut just a little too much....


ambient 75*
sc 5*
sh@ comp. 25*
head 160psi
back 15 psi
rated @ 6.7 amps
pulling 5.8 @ start up with box temp 70*