In Parallel Rack do you separate tubes for each Evaporator?

[cool runings]

Hello!

When using a Parallel Compressor Rack (*****), do you use (1) cooper tube for each Evaporator from the Manifold or do you use a single bigger tube and connect it to several Evaporatos?

I've seen both but can't get a reason to use one or other.

Thanks!

Both..

Where I'm from the one tube is called a ring main (one liquid suplying many evaps).

The other is the stub type.

One suply for each individual section.

The one pipe (ring main) is the most popular nowadays and has replaced the individual stub system.

Cost will be the biggest reason.
To run the single pipe (ring main) it uses less copper tubing
so will be cheaper to install.

All the best

coolrunnings

.

[georgedvf]

Thanks coolrunnings.

And if I use the "ring main" solution, how do I design correctly the pipe diameter considering that each Evaporator has solenoid valve to stop when temperature is achieved or to defrost individually?

I forgot, Do you use this solution in suction line too?

Thanks!