Refrigerant Pipe Sizing HVAC Basics #refrigerant #piping #hvac

I heard you was out of country Gov. stuff hopefully with good guys.

Gracias por compartir tus conocimientos y experiencias. Saludos cordiales desde Guadalajara México

I want to join

Carrier is full of themselves. Private label all the way. "Lifetime unit replacement warranty" customer only purchases unit from us "once" in a lifetime. 🧠

Just passed my epa test guys. Universal

Good information

I'm installing a Gree 4 zone 9,9,12,18 mini split which has 2 branch boxes. The longest run is 40 feet. I'm concerned if I run 2 handlers off of one branch box that I would need to increase the line size to the box. Is it a valid concern or would the system be fine given the short line lengths?

Thanks a bunch Taddy! This was a grateful information man. Can you make a video about Piston Sizes Please?

I'm going into pipefitting next month, this video is very helpful thank you!

Where can I find these catalogs and can I download them online?

Hi, quick question.. lets say you are replacing outdoor condensor unit, and if the existing vapor and liquid line length is not enough(assume0.. what kind of connector you use .. in plumbing we use 90 degree elbow etc.. i am not sure what will be used in HVAC just to extend the line by a feet or two. apprecaite your response

Easier than I expected. Gracias

What is the type of copper pipe is the coil pipe that you use for A/C?

Hi there, I’m having a hard time determining if I need to size the lineset based on the condensing unit’s BTU’s or the Zone’s BTU’s. I have a Bosch 27k 3 zone mini split. Each zone is 9000btu respectively. Logic is telling me that I will only need a lineset big enough to cover 9000btu on each head. If I had a single zoned 27k btu head then obviously I would need a larger lineset. Am I incorrect? Thanks

I bought a 3 ton condensing unit to replace old 3 ton unit. when I looked at the vaporside port for new one, it came with 7/8. So, the pipe in the house which is 3/4 wouldn't fit. Maybe I need an adapter.

1 ton?

Thanks taddy for everything .great content keep it up

This Video es perfect Boss

very informative info, is it possible to change pipe size to get equal BTUS,example if u have larger BTU airhandler then the condensor , does increasing pipe size or decreasing pipe daimeter give u equal BTU to get proper cooling operation ?

Good stuff man

Very informative thanks Tad!

Thanks!

Very Awesome, I have been following your instructions and guide lines. Very accurate, thank you for your professional guidance. Love your professional guidance!!!!

man u teach me some good stuff! im gettin better by the video! this just helped me figure a problem out. i was thinking why the the equipment come with 7/8 stub and somebody reduced to 3/4 on a 25’ line set so i started looking for legitimate answers. i never under mind the hvac engineers and thats just what this installer did to my customer! i sure its what they had on the truck and knew better. bottom line not dumb just lazy!

Can you crush outside copper AC lines by standing on them?

Thank you but you've been very helpful

Im stuck on if i should install a 7/8 or 1 1/8 suction line on a 5 ton unit that has a line set run of about 70 ft which way would you go.

Hey bro, that was just excellent info that I was looking for. I just subscribed. Im building my own house and at drywall stage. But with all this heat, I decided to rough in lines and electrical for future if I decide to do air conditioning. Ive only got about 30 ft run from condenser to air handler but I need to do about 3 or four 90 s . The 3/8 line I may be able to bend gently and do the 3 or 4 90 deg turns. How do I run the bigger, probably 3/4? Can I solder? I've solderd plumbing pipes but I know I cant use that on these. Also are few bends allowed or not? Can you give me as much info as you can please? Much appreciated.

Do you only use ACR fittings? Can you use K or L type fittings instead? Sweat copper fittings.

Type K copper will work also?

Read the manufacturer’s literature. For example, Rheem/Ruud 5-ton RP14AZ and RP15AZ heat pumps use 3/4” or 7/8” vapor lines depending on length, never 1 1/8”, and warn against oversizing.

The link to get the book is not in the description... Thank you

Great video. Thank you for sharing

Can i have your email?

Please don’t cut your own hair anymore

You said line set length on the nomogram, it's actually equivalent length. With equivalent length you need to take all your fittings and valves into consideration and add that to your line set length. For example a 3/4" 90 elbow is this many feet of equivalent length of straight piping, I would refer to the SUVA Piping handbook. Rule of thumb that you use is under 100Ft of line set you times by 2 = equivalent length. Over 100 then times 1.5 = equivalent length. It's a good practice to count how many fittings you will be using and adding that equivalent length up to a total though.

Then you said lower suction pressure causes refrigerant migration, that's not true, refrigerant migration happens in the off cycle mostly and the refrigerant goes to the coldest spot and condenses there. So if it was really cold outside, your refrigerant would go to your compressor and condense there, that's why we use crankcase heaters in refrigeration.

Lower suction pressure however does affect your capacity, the lower the suction pressure the lower the capacity.

If your suction pressure is low due to the coil being a solid block of ice then you're "flooding back" to the compressor, not migrating.

That was awesome thank you so much