Need help to get more info on Copeland hermetic

[The MG Pony]

Copeland RSN2-0050-IAA Compessor
115v /1PH /60Hz
Medium tempitur R-12 compressor
4,240 BTU/h at 20F; -6.67C; 266.49K
FLA-9.0A ( 1035W ); LRA-51.0A
850 watts < ?
600Ml Minerol Oil

This is what I sort of know about it, what I need to get is a simple straight for sure answer on it's tonnage!

1/3 Ton Sounds close (It's a bit higher according to my math)

Second I need to know what do I need for a hard start kit for it as I'll be using it in a pump down system.

Third: Will R-290 be too hard on this unit? or an R-290/R-134a Mix be better?

[The MG Pony]

And all so, I rather abused the poor thing when I was first learning, so needles to say it needs a very good wash inside, what Can I use thats not specialized as I don't have access or the money for any specialized flushes.

Would Varithol work? Acetone mix? (I know acetone won't work as it would eat the varnish of the motor windings, but I'm using it as an example)

Any and all help will be greatly apreciated thanks!

[Peter_1]

Whats's BTU?
Provide the proper SI between brackets please, much easier to read, at least for me.

[The MG Pony]

SI ?

(4,240 BTU/h at 20F)

plant specs:

Copeland RSN2-0050-IAA Compessor

115v /1PH /60Hz

Medium tempitur R-12 compressor

4,240 BTU/h at 20F; -6.67C; 266.49K

FLA-9.0A ( 1035W ); LRA-51.0A

600Ml Minerol Oil

[Peter_1]

BTU in SI is kW,
°F in SI is °C,
psi in SI is Pa
We're use to work in SI
......

[The MG Pony]

Ah Metric, I've never heard the term si befor. I'm bit of an oddity here in Canada we use metric but being stuck next to the americans we are forced to use imperial as well for some things it is easier to use imperial, and I rather enjoy the TON method of ratings it keeps the numbers small and simple.

I have no idea as to the Metric ratings as there are non, that is the raw data of the compressor and thats what I don't know hence why I'm asking if any one can get the data as thus far I haven't been able too!

If I knew the data for certainty I wouldn't be asking LOL

[Peter_1]

Download once Uconeer, the free conversion software.

Well, these raw data can be converted to other units.

Well, for me .. if we talk about tons...a ton is 1000kg, so 1/3 ton is 300 kg...a little bit heavy for such a small compressor
You see, not that difficult at all.

[The MG Pony]

cute. but thats the thing I have no certain data on the compressor! thats what I'm trying to find out

What is its definate ratings either imperial or metric.

Will it handle: R-290, R-22, and so on

thats what I'm trying to do!

[Brian_UK]

1TR (1 ton refrigeration) is 12000 btu I believe.

[The MG Pony]

ya thats right.

For converting BTUs to Tonns:

(1 / 12,000) * Zbtu/h = T%

Where Z = Your BTU rating
T% = Tonnage in a percent

^Theres a simple formula I wrote for converting (I'm sure others have made a far better ones then mine but it works)

[US Iceman]

Here is a program printout from the Copeland software. I'm not sure if the 4 in the model number is for a newer model, but the rest of the information seems similar.

As to try to answer your other question...

Will it handle: R-290, R-22, and so on?

I don't think so. R-22 and R-290 will have higher mass flow rates for any operating condition other than R-12. My guess is you will overload the motor.

I've never heard the term SI before

If I remember this properly it stands for System International, if I translated the French correctly.

I used to do a fair amount of work for Pacific Rim clients and they used metric, which can be a bit different that SI, so you have to watch the units very closely.

Peter & Brian, I could not get the program to convert the data into SI. Sorry...

[wambat]

BTU in SI is kW,
°F in SI is °C,
psi in SI is Pa
We're use to work in SI
......

Peter try this:

http://www.gordonengland.co.uk/conversion/sibase.htm

[The MG Pony]

Ok so what I figured I have to use R-134a /R-600a mix

I don't quite understand the table, exactly how meny tons is the compressor rated for?

All I know is it consums 9Amps and is rufly 1/2Horse motor, and even then I'm not sure of! Basicly what I'm hoping it will at least handle being cupled to a 1/2Ton TXV?

[US Iceman]

I don't quite understand the table, exactly how many tons is the compressor rated for?

Look at the evaporating temperature and condensing temperature you want to operate at. The capacity (C in the table) is given in Btu/hour. Divide the Btu/hour by 12,000 Btu/hour-Ton. This gives you the Tons (or TR for Tons of Refrigeration).

Example: 4,000 Btu/hour / 12,000 = 0.33 TR

This rating is also dependent on the rating conditions specified on the sheet. If the operating conditions are different than those specified, the capacity can be more or less depending on what variable changes.

The capacity and all of the other data will change if the refrigerant type is changed. A 1/3 TR compressor on R-12 can be different than a 1/3 TR compressor for R-22.

I'm not sure why you are building a system??

The TXV should be matched for the same operating conditions as the compressor. A 1/2 TR TXV used on a 1/3 TR compressor will not work right.

[The MG Pony]

Ok thanks.

Why is to simply design and build a system using proper design principles and properly engineer it within X degrees. the perpos, right now just to get cold, it has no finite perpos.

but whats with the :

C (Capasity?)
P ( ? )
A ( ? )
M (Mass flow)
E (Energy)

Thing?

[The MG Pony]

So at 32C with an evap @ -3.1C it can do 6100BTU/h ie 1/2 Ton

What size Capacitor do I need for Hard starts and do I need to replace the current relay? The old system used a rather larg cap tube so I doubt it has a hard start all ready there.

[US Iceman]

I think the P = power = watts; A = amps

I don't know what the % is for.

[Peter_1]

Peter try this:

http://www.gordonengland.co.uk/conversion/sibase.htm

Wambat, thanks.
It's not that I don't understand these units but if I have to translate this for every post, then I'm more busy with converting the units then answering the post itselves.

I personally find that this is the responsibility of the poster if he wants to be helped by as many as possible posters.

[The MG Pony]

well again I'm trying to identify WHAT the info is, so you cant translate zerro! if I had the info I could project the rest fairly well. but identing the compressors details is the hard part. But thanks to US Iceman I now have some idea of the compressors specs and rates, thats what I was trying to find to make sure it was within its ratings with the TXV and thank fully it is!

The compressor will do 6100BTU/h (1/2 ton) @ a condensing temp of 32.2C & and evap @ -3.9C

HS 90 to 123psig Max ; LS 20 to 35psig Max depending on which refrigerant used (R-12; R-134a: R-401a, 401B)

But in Mid summer here in BC it gets up to a max of 40C in the city with an average mean of 35C So Now I can plot out over all performance through out summer and at what Capacity I can reasonably expect it to opperate. More info though the better

[The MG Pony]

Here's the pictures of the progress so far

[Peter_1]

This seems indeed an old unit.
I did't know that HP was making condensors in the past

[The MG Pony]

ya, 1973. I added the lowpressur switch and the reciver, cleaned it up a bit. I personaly like how sturdy the compressor is, wish I could afford to buy one just like it brand new for R-22 so I could us R-290, it is a beautyfull refrigerant

[US Iceman]

You should also place a fan shroud around the fan side of the condenser. This will help the condenser to have adequate air flow through it. A fan sticking out in the open will help, but it is not the same as having the fan shroud in place.

[The MG Pony]

It will be further shrouded, but right now I am building it