capillary tube even lenght

[PaulL]

Hi there


I'd like to propose you an apparent simple topic.
To me is very clear, but surprisingly there have been a lot of questioning about in my work experience.

Topic.

I have faced to a coil realized with capillars having different length.
That is: not all the capillars have got the same lenght.

This coil freezes at low temperatures, that is, there is ice formation on the finned pack.

The system works with an expansion valve, and I have not seen an uneven air distribution.

To me the root cause is evident.
Capillars must be of the same length.

To me this is logic: this helps an even distribution of refrigerant into the coil.

According to someone, this rule is not written anywhere.

Please, which is your point of view ?


thanks in advance !

[Brian_UK]

Go to www.sporlanonline.com click on Literature then on Refrigerant Distributors and open document 20-10.

[PaulL]

Many thanks !
I can read it in application instructions.

Therefore do you agree with me with the fact that this can be a probable reason of freezing ?

Thanks !