Best Of
Re: Rust in one pipe system
Do you keep up on repairing any steam leaks ? With steam leaks the water will escape out of the system and leave the minerals (solids) behind . Hi iron water would leave a redish color mud in the boiler .
Big Ed_4
Re: Material price increases due to govermental tarrifs
The fed can't raise the money supply 28% without causing inflation. Stopped at the deli for breakfast lately?
Re: Remove PTAC unit for servicing
They'll have to support the H W coil or remove it.
it should have unions to service it anyway
pecmsg
Re: Remove PTAC unit for servicing
That looks like a modified PTAC to me. I've done plenty of PTAC"S and never seen the hot water coil on the discharge, external to the unit. Generally PTAC"S are a packaged unit that slides out of their casing so it can be repaired. preferably on a bench. Take the old one out and slide another one that's already been repaired. Maybe that's so old and that how they did it. looks like it will still slide out if you can support the coil. hang it from the window sill. might have to call McGyver
pedmec
Re: Rust in one pipe system
Any pipe above the boiler water line usually lasts forever. It's just the pipe below the water line that causes issues.
Re: What are the most well-established US manufacturers of residential electric boilers
If going all electric just put electric baseboards in each room!
At least you'll be able to control each room separately.
pecmsg
Re: Daikin 2-Zone - Which port to charge? - Instructions confusing
If you didn't vac it down, it isn't going to work.
ratio
Re: Heating Help Partners with SkillCat for App-Based HVAC Learning
Very smart partnering…whenever access to education is made easier, everyone benefits. Mad Dog
Re: Megapress G
We are not allowed to use galvanized steel on gas piping in Massachusetts. I wouldn't recommend spray paint if you do have to paint the pipe. it just gets everywhere. roof, rooftop unit, cloths etc. We brush it on just to keep the site clean.
pedmec
Re: Daikin 2-Zone - Which port to charge? - Instructions confusing
Both lines are on the low pressure side of the system, which is why they only give you one service port. You will get the same reading if they gave you a service valve on the line labeled "liquid". The TEV is in the condenser so the line labeled liquid is the outlet of the TEV which during the operating sequence will be mostly liquid even thou its starting its phase change.
if you have a system operating with 410a refrigerant, you have a blended refrigerant. Because you have a blend you have (2) refrigerants working together but they have different boiling points. if you charge in vapor there is a real chance that you will fractionalization, the separation of the refrigerants. You can have one entering the system more than the other so the composition will not be correct.
to avoid that you turn the cylinder upside down and allow the refrigerant to leave the cylinder as a liquid. but this doesn't mean to allow liquid into the system. you meter it in with your gauge or you can buy a tool that will help you with that.
pedmec