There's no HVAC general thread so I figured I would get one started with a couple questions and so other people can ask their own.I'm looking to get the terms/names of parts of an hvac system if anyone can help me what what these things are called and what they do.What's the proper name of this thing? It's part of a central air cooling system where the coil of copper pipes meet and get cold right after the air filter.
What are the names of these two copper pipes labeled 1 and 2 and what is the purpose of each? And should I be worried if #2, the big one wrapped in the foam insulation is green like the statue on the outside like the statue of liberty? A power cable was right on it, the black insulation stripped right on it for some reason (do power cables have the power to disintegrate the foam if they lay right on them over time?). Not sure if it's normal for these to get green over the years of use or if it was being corroded by the power line through electrolysis that was right on it making contact with the copper pipe without any insulation. Not sure how the insulation was stripped just in that specific part where it was making contact as only the previous a/c tech has been up in the attic.And what might it indicate if the big pipe #2 in this case is overly sweating so bad that when the a/c turns off, water trips down just from the condensation that water drips out of the insulation?
What are these two pvc pipes called and what is the purpose of each?
>>2871934If this is the stage you’re at with HVAC info, you’re better off just watching a general info video. It’s like you’re asking “what are these 4 round things attached to the bottom of my car?”
>>2871934>>2871937>>2871939you could have watched a 12 minute youtube video on how ac's work instead of making a fucking thread you goon
>>2871934what a shit thread.
>>2871981>>2871989>>2872068They don't know, kek.
>>2872083>omg!! The tech didn’t install this right! Look at all this water leaking from this pipe! He didn’t solder the joints correctly at all! I work for a home builder I know when I’m being ripped off! This leaky pipe needs to be replaced completely!I had this exact thing said to me one time. Not about me, I’m not an hvac guy and he probably should have used more insulation… but still pretty funny. >kek they don’t knowOP would be best served watching a video because anyone who had seen and understood the refrigeration cycle picture would know this stuff. That’s like minute 1 of hvac training. Pic related
>>2872154Why is there two pipes though? I grasp the concept of how they work, but I am looking for the actual names so I can google the prices, and am confused as to why there is two copper lines, one big one and one small one, and two pvc pipes for the drain line. Just looking for the names so I can get some quotes and tell the a/c tech what I need done or is giving me issues over the phone before he even steps foot here.
>>2872161>I grasp the concept of how they work You clearly don’t though. Think for a second how the refrigeration CYCLE works. Look at the day1 diagram I posted for you. Why would a CYCLE need 2 pipes? One is carrying refrigerant TO the evaporation coil, one is carrying heat and refrigerant AWAY from the evap coil. I’m honestly not trying to be mean here, but you’re making this pointlessly difficult. Either do the work of learning or get 2 hvac companies to give different bids and explanations. No one is going to spoonfeed you information to be a Karen to the hvac guy. >my copper pipe is sweating an awful lot, is this a problem? Can this be corrected? If that is your issue then ask that way.
>>2872177Sounds like you don't know either desu.
>Installing new extractor fan>too much wire >measure wire to terminal, add extra for slack>cut wire>wire now too short and only just reachesGoddamn it
>>2872200you should tell your local mechanical company that you want your whole lineset replaced to get rid of that yucky green stuff. Im sure theyll happily oblige.
>>2872161>Why is there two pipes though?The LIQUID line carries the compressed, slightly cooled refrigerant from the compressor TO the evaporator.The VAPOR (gas) line carries the expanded refrigerant BACK TO the compressor from the evaporator.The LIQUID line is small to keep the refrigerant compressed in a liquid state.The VAPOR line is large because the expanded gas takes up more space.
>>2872381I think the joke is HVACR guys are usually retarded anon. I don't know how OP doesn't get it yet unless he is a full blown mongoloid.
>>2871934How does one go about discharging these capacitors before working on an hvac unit?
Does HVAC have a little bit of everything compared to other trades?
>>2871934Evaporator
>>28719391 is the drain for the evaporator condensation, 2 is an overflow drain pan drain incase 1 stops up so it doesn't water damage your ceiling
>>28719371 is the liquid line 2 is the suction line if its just AC if its a heat pump when its in heat pump mode 1 is still the liquid line but 2 is the discharge line
>>2874218>>2874220Finally, someone that actually knows HVAC. The hero we needed. Thank you sir. I am now able to shop for quotes on my a/c and explain in detail what's wrong with my a/c.
>>2874164Just take a heavy duty screwdriver or any tool with good rubber grips and run it across the contacts so it discharges any held charge.
>>2874205Yea! A big factor is where you are, different locales have differing equipment, northeast has a lot of oil and gas work in the winter and AC work in the summer. Out west and down south you’ll see a much longer AC “season” and less oil, more gas. In terms of trade work you definitely learn it all. You learn basic carpentry, sheet metal work, plumbing, electrical, especially 24v control wiring, which is fun once you wrap your head around it. It’s a real do all trade. Plus if you work light commercial or residential you’re moving around from job to job a lot which is nice. If you wanna stay in one place though you can go work chillers or other industrial scale shit. It’s a fun job.
>>2874284it would have taken them just as long to answer your question as it would have to be a smart ass
>>2874205I do refrigeration and 80% of the problems are usually something electrical
