EcoRenovator - View Single Post - Pressure Test Mini Split with air instead of Nitrogen?

TomWS · 02-12-12, 04:46 PM

I'm enjoying this discussion!

Re Serto fittings, one thing I liked about them, in addition to not having to flare the tube, was the fact that the installation procedure simply calls to tighten 1 3/4 turns after hand tight for initial install - NO TORQUE WRENCH to fiddle with!

Re using propane for leak test and purge, I wasn't going to raise the temp to get 15Bar. To my mind, any reasonable pressure is good enough to leak test, the only advantage I see of a higher pressure is that it makes any leaks that much more obvious. I'm certainly not going to pressurize until it blows! If the tubing's holding 100-150 pounds, then it's not 'broken'... Plus, as you say, propane sounds like a real convenient purge.

Tom

02-12-12, 04:46 PM	#9
TomWS Lurking Renovator Join Date: Feb 2012 Location: Triangle, NC Posts: 8 Thanks: 4 Thanked 0 Times in 0 Posts	I'm enjoying this discussion! Re Serto fittings, one thing I liked about them, in addition to not having to flare the tube, was the fact that the installation procedure simply calls to tighten 1 3/4 turns after hand tight for initial install - NO TORQUE WRENCH to fiddle with! Re using propane for leak test and purge, I wasn't going to raise the temp to get 15Bar. To my mind, any reasonable pressure is good enough to leak test, the only advantage I see of a higher pressure is that it makes any leaks that much more obvious. I'm certainly not going to pressurize until it blows! If the tubing's holding 100-150 pounds, then it's not 'broken'... Plus, as you say, propane sounds like a real convenient purge. Tom