Nitro Usage

[sam_hikes]

As a homeowner I wondered when/what nitro is used for?

Is nitrogen used to clean out linesets via some procedure?

Is the above different from the nitro used to pressure test a system?

Reason I ask is tech is coming to cut out Trane internal driers which were never removed during a king valve replacement on my Nov 2007 xl14i system and I want to make sure system is as clean as possible from contaminants.

Unit has been running with both internal & external driers since day 1 (Nov 2006) but I suspect the king valve replacement contaminated at least the internal drier? Is there any additional exposure and/or procedure required due to running with both driers? ( 1 good / 1 bad )

[amd]

The drier is there specifically to absorb/remove moisture.

Nitrogen is used to find leaks, purge lineset of moisture (in between pulling vacuums), and prevent oxidization when brazing.

[smokin68]

Internal/External driers???:confused: :confused: :confused:

Do you mean factory drier/ one installed by tech?

[air2spare]

...its also a filter





The drier is there specifically to absorb/remove
moisture.

Nitrogen is used to find leaks, purge lineset of moisture (in between pulling vacuums), and prevent oxidization when brazing.

[sam_hikes]

Sorry... I was concerned about the internal Trane filter drier from the factory that was not cut out during a king valve and compressor replacement.
( compressor was fine but tech miss diagnosed )

Internal/External driers???:confused: :confused: :confused:

Do you mean factory drier/ one installed by tech?

[timebuilder]

Sorry... I was concerned about the internal Trane filter drier from the factory that was not cut out during a king valve and compressor replacement.
( compressor was fine but tech miss diagnosed )

"Tech miss diagnosed?"

Are you saying the correct diagnosis of your root problem was not made by the tech?

[hvaclover]

"Tech miss diagnosed?"

Are you saaying the correct diagnosis of your root problem was not made by the tech?

Oh, Lord, TB is gonna write another five chapters....here we go again.

[d_griff]

by internal drier you mean the small copper balloon looking "Pencil" drier in the condenser right,and by external you mean on the line set??
why not run with two unless you have a temp or pressure drop across one of them,if your "Guessing" one is at least clogged your making unneccessary work and opening the system again,risking contaminents or foriegn material from entering..i would be sure it is a problem before wasting time.
you are just suspecting and are not a tech right and you have not tested the driers??

[timebuilder]

Oh, Lord, TB is gonna write another five chapters....here we go again.

Only if they want, ol' bud! :D

[wolfstrike]

Reason I ask is tech is coming to cut out Trane internal driers which were never removed during a king valve replacement

an on-going problem Trane refuses to recognize.
those trane driers have to be replaced any time the system is opened , they become weak and can release drier beads thoughout the system , destroying it.
(assuming your system has that kind)

[subcooled_]

As a homeowner I wondered when/what nitro is used for?

Is nitrogen used to clean out linesets via some procedure?

Is the above different from the nitro used to pressure test a system?

Reason I ask is tech is coming to cut out Trane internal driers which were never removed during a king valve replacement on my Nov 2007 xl14i system and I want to make sure system is as clean as possible from contaminants.

Unit has been running with both internal & external driers since day 1 (Nov 2006) but I suspect the king valve replacement contaminated at least the internal drier? Is there any additional exposure and/or procedure required due to running with both driers? ( 1 good / 1 bad )
Nitrogen is used because it's dried nitrogen meaning that when introduced into a system for a leak check (after a repair) it will absorb moisture and when released (which is legal and another reason) it will remove that moisture from your system. The Hydrogen in water can react with the chlorine in the refrigerant creating HydorChloric acid that will eat internal components like compressor windings if not removed. That's also way you need to replace filter driers when ever you open a system. The filter drier will trap remaining moisture. R11 Flush is typically used to clean out linesets.