charging a split system with 50 degree ambient

[Ansonf]

after the factory charge, and you are still low because of line set, add more till it sweats.

[jpsmith1cm]

after the factory charge, and you are still low because of line set, add more till it sweats.

This is NOT a good charging metric.

With a 50 degree ambient, the dewpoint will be quite low.

It may not be possible to get the suction line to sweat.

[Tommy1010]

How does that compensate for lineset length?

With that as an unknown, you cannot simply weigh in and go.

is there not a formula that calculates extra refrigerant for additional liquid line

[jpsmith1cm]

is there not a formula that calculates extra refrigerant for additional liquid line

Indeed, there is.


Of course, this ASSUMES that you can access the lineset to measure it.

[Hardwater]

And if you cannot measure the lineset to calculate the required charge, how do you charge it?

"Touche`" you got me! my "DUH"

[d_griff]

after the factory charge, and you are still low because of line set, add more till it sweats.

Wow, Poor customers ...

[d_griff]

This is NOT a good charging metric.

With a 50 degree ambient, the dewpoint will be quite low.

It may not be possible to get the suction line to sweat.

Oh it will sweat , When the ice starts forming on it because you have 0 degree superheat and a 28 degree suction line slugging liquid into the compressor

[GOVHVAC]

Most commercial units don't come with a factory charge weight stamped on them.
If your running the unit at 50 degrees it should have some type of low ambient kit or a fan cycling switch, just charge to proper superheat and subcooling.

[Ansonf]

or you can build an enclosure around your condensor keep it kosey. insulate line set real good. O r have the owner do that.

[Ansonf]

Being i n bay area Ca, I ve not had to deal with 50 degree daytime weather.