lineset purging

[socotech]

Anybody just purge lineset with nitrogen when converting to 410a or do you allways use rx11?

[Priceless32]

Depends on how the line set is ran to the condenser? If the line set runs down to the condenser from the attic or upstairs, i feel you could get away with a minimum of nitrogen but better off with rx11. if the line set runs through the slab it could create a trap for the compressor oil so in my opinion you are better of to re run a fresh line set. but that is strictly my opinion and opinions are like elbows. everybody's gotta couple of em

[rdholder]

Read the MSDS for RX11 it will alarm the hell out of you

1,2-dichloroethylene 200 ppm, 8 & 12 hour TWA

1,2-Dichloroethene, commonly called 1,2-dichloroethylene or 1,2-DCE, is an organochloride with the molecular formula C2H2Cl2. It is a highly flammable, colorless liquid with a sharp, harsh odor. It can exist as either of two geometric isomers, cis-1,2-dichloroethene or trans-1,2-dichloroethene, but is often used as a mixture of the two. It is minimally soluble (5090 mg/L for the cis-isomer[1]) in water, and soluble in ethanol, diethyl ether, acetone, benzene, and chloroform.
1,2-DCE is used as a solvent for waxes, resins, polymers, fats, and lacquers. It is also used as an intermediate in the preparation of other chlorinated solvents.
The major health effect of inhalation of vapors of 1,2-DCE is narcosis; it has been used in a combination with diethyl ether as an anesthetic. In high concentrations, exposure to 1,2-DCE causes central nervous system depression; in milder exposures, it can produce nausea, vomiting, weakness, tremor, epigastric cramps, burning of the eyes and vertig

[vstech]

... got a reclaimer? use R22 with the reclaimer and cycle the freon through the line a few times... all the oil will drop right out of the line. and no residue left in the system.

[hvaclover]

... got a reclaimer? use R22 with the reclaimer and cycle the freon through the line a few times... all the oil will drop right out of the line. and no residue left in the system.

Brilliant minds think alike:grin2::cheers: