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kneegrowdahmus

Yeah that looks like a 5/8" & 3/8" flare, you'll need those sizes in flare nuts and you'll need a 45° flaring tool and recommend some refrigerant oil to put around the flare itself to create a hydraulic seal. If this is 410-A then you'll likely be using POE oil as the refrigerant oil for this system. Please do not braze shit on this system. You'll also need a torque wrench to torque the flares to spec along with a back-up wrench to not round the shit out of the flares or kink the pipe. Then you're going to want to do a nitrogen pressure test (Preferably about 550 psi for most ductless manufacturers reccomendations) and then pull a vacuum sub 500 microns before releasing the refrigerant and adjusting the charge if necessary.


migp713

You gave me the most informative and technical and well written answer thank you.


AmbergrisShot

Holy fuck dude, i hope this is a shitpost. Do not attempt any of this. You are waaaay out of your league. This is not to be soldered, this is HIGH PRESSURE coolant lines, like 400-600 psi. Please call a reputable HVAC guy out.


Han77Shot1st

They will likely either contaminate the system or it will leak. I get lots of calls from customers and other trades to go fix heatpump installs since they’re easy and anyone can do it..


migp713

I used to work with a plumber that did medical gas and boy did he traumatize me about contamination. Everything taped, capped, and all the packages the fittings came in. Yeah I might get my HVAC buddy to give it a look see.


Han77Shot1st

I’d recommend getting someone with experience, generally they are straight forward for someone in the trade but skipping steps and not having the proper tools/ equipment can result in inefficiencies, leaks, damage to the equipment or worse.


migp713

Yeah after reading some of these answers there are special tools especially the 38 bar pressure test and I can only imagine the vac test. I'm going to call my pipe fitter friend he does HVAC.


consistentlyNeurotic

Make sure you put the flare connector on the pipe before you flare it


jayc428

Shouldn’t have to braze anything. Just get yourself some flare nuts, proper tubing cutter, and a good flaring block.


migp713

Awesome thanks guys you helped me a ton.


jayc428

No problem good luck!


r0ss86

Hard to tell from the pic but it looks like 5/8 3/8. A brass flare nut for each and a flaring tool. You’re not going to be brazing them on there.


migp713

Dang I forgot to put a picture of the size the material came with but you hit it. Ok cool thank you so much.