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Originally Posted by VAV616

and another fella gave me this calculator

http://www.danfoss.com/United_Kingdo...ils/DanCap.htm

it uses btu's and temps

Here's a page from the Educational Forums with working link for the Danfoss cap tube program:
http://hvac-talk.com/vbb/showthread.php?t=219602

Try this:

http://www.danfoss.com/North_America...tion+Tools.htm

Originally Posted by VAV616

and another fella gave me this calculator

http://www.danfoss.com/United_Kingdo...ils/DanCap.htm

it uses btu's and temps

Your link is not working.

I prefer JB cap tubes. They seem to come in standard sizes(I.D.)that I see alot. Supco seems to have the odd sizes. I keep a 100' roll of JB .036 &
.042 I run into those sizes more than any other. JB also has a descent sizing chart.

and another fella gave me this calculator

http://www.danfoss.com/United_Kingdo...ils/DanCap.htm

it uses btu's and temps

you can punch that comp number into google and get the specs on it

http://www.emersonclimate.com/images...06DS-194R1.pdf

ive found a little difference in what the manufacturer recomends
and what Supco chart states. Most told me to go with Supco,
If you want to be cynical about i, They say sometimes the
Manufactures Size is Designed to Fail. Better for profits, ya know.

Some say the Supco chart gets real close, sometimes you may
need to cut off a couple inches if your discharge is running a
little hot.

supco

i belive it on the back of the box it comes in or on a piece of paper it the box

Originally Posted by Airmechanical

.

I don't know how to quote your words when you post it in that form.

let me try to remember the points you made.

yes they did give me the cap tube info,but I only keep supco's numbered cap tubes,I don't think they specify what they are,if they do I never noticed,I will check it..

as far as selection of cap tubes by horsepower info I didn't think that's a preferable way to do it to say the least.

Since Copeland doesn't list many of their compressor's nominal horsepower ratings anymore, I look for the Copeland condensing unit where the compressor is used and apply that nominal HP rating to the Supco cap tube charts.

The AFT18C1E-IAA is used in the M4FL-0051-IAA condensing unit, so I take that as a 1/2 hp low-temp R404A application.

In this case, the Supco chart then tells me to use 29" of #2.

I really wish they would publish a chart based on evap temps and Btu/hr.

Since this is a fairly new system as you say, then I would assume that the compressor was still the original. Therefore I would go with the HP rating of the compressor. Then use that HP to size the cap tube along with the temp range and refrigerant type.

*

Originally Posted by wannafreeze

this is used in a traulsen two door low boy freezer. ULT48-LR.traulsen tech support as expectedly can not provide HP information that I would need to size a supco cap tube.
all you need is the model and they will tell you what size/length cap you need

I ordered the cap tube from the oem since I didn't want to take chance on this fairly new freezer.
i used to only use OEM cap tube, got tired of waiting on shipping, now i use the supco caps

(I don't need a bashing for using supco's caps.I know all that...)
whats wrong with supco caps

.

supco cap t. selection..

maybe this question should be directed to supco but,

anybody using supco's cap tubes..

my question to you,

aft18c1e-iaa-201 copeland compressor.(extended medium).
at (-)10* evap it's rated 1610 btuh.

this is used in a traulsen two door low boy freezer. ULT48-LR.

traulsen tech support as expectedly can not provide HP information that I would need to size a supco cap tube.

I ordered the cap tube from the oem since I didn't want to take chance on this fairly new freezer.

if I were to take a chance I would size it to a 1/2 nominal HP compressor.

How would you go about it and why.

(I don't need a bashing for using supco's caps.I know all that...)