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Discharge superheat is meaningless because the discharge line is all vapor!! :couchhide:

Yes, you should’ve pulled a vacuum. Was the pressure too high or too low? I’d imagine that one pound of refrigerant in that recovery tank would be all vapor, therefore the pressure would be lower...

I pulled a new install mini split down to 60 microns recently and it held for an hour below 100 microns. The government required holding below 500 for an hour and I had to schedule my inspection two...

I’ve noticed the same thing. I always figured the POE holds onto the refrigerant more than mineral oil.

If it’s seeing an accurate temperature, then why is the room over cooling? You need to get it in a spot where it sees an accurate space temp. At least that would be my best guess for a proper...

Can you get it to run manually using the Symbio app? I started a couple up a year ago. I remember the wiring was confusing and it varied by the type of air handler installed.

Smoked pulled chuck tacos on home made blue corn tortillas with pickled red onion, cilantro, guacamole, and El Yucateca hot sauce.

Is this a heat pump?

I’ve had ok luck with those. I’ve seen them turn red many times. I also stock the acid test kits where you mix the oil in a bottle with a chemical but on small systems you can’t get enough oil for...

Maybe undersized txv’s or maybe one of them isn’t feeding?

Are you talking about removing a sheave from a split taper bushing? Did they break because they couldn’t push the sheave off or because the female threads on the bushing were full of gunk? Clean up...

I’m assuming they meant to install a ball valve and close it? I’d just remove that whole section. Spin the 90s off of the headers and put caps on. I think that would be cleanest. I’d still fix the...

Makes sense. Just to be clear, eliminating the bridge where I circled in my pic and correcting the under boiler piping would be the proper fix, correct? I believe that’s how you drew it in post #76.

It looks to me like this would only work if the boiler pump runs anytime there’s a call for heat, not just when the boiler is running. If the boiler pump wasn’t running, the second zone would still...

If you plug the piping where I suggested you will still have a primary/secondary piping configuration.

Maybe I’m missing something but if I was to plug anywhere it would be where I circled in the photo. This would allow for a separate loop through the boiler instead of trying to force all of the flow...

Maybe I just am not patient enough, I’ve certainly never waited 20 minutes. I assume my pump is good because I see the changes in combustion when moving between firing rates very quickly.

I’ve pegged mine a bunch over the years and it’s never come back down

I have a Bacharach PCA3. When CO exceeds the max it displays all X’s and won’t read again without cycling power. I always let it run in fresh air for awhile before cycling power.

I agree with Bbeerme on this one. It’s pretty common to see x series solenoid valves on test chambers and it’s not as simple as just a liquid line solenoid.

When CO levels exceed the max on my analyzer, I need to turn it off and back on to get it to read again. If the CO stops reading, start by getting the O2 within spec. Once the O2 is good, I don’t...

Have you tried dry brining? I’m a big fan of dry brining for all meats. Much less mess than wet brining and you don’t need to worry about brining too long. Just sprinkle on salt as you would normally...

I’ve called for tech support on an AB VFD (Rockwell Automation) and they asked for a credit card number. I decided to figure it out on my own and will not recommend that drive in the future.

I had...

Working out of town this week and enjoying a beer in my hotel room.

Enjoying a really good local bourbon.

I base my rub on this recipe https://amazingribs.com/tested-recipes-spice-rubs-and-pastes-katzs-pastrami-rub/. I don’t use the whole seeds or peppercorns though, just ground spices. I also use the...

Thanks. It’s pink from the cure. The meat was cooked to 200-205 internal temp.

I cured some English cut short ribs, rubbed with a pastrami rub, and smoked on my Weber performer with charcoal and hickory and cherry chunks. Put a couple potatoes on at the end of the cook to use...

Got some Irish whiskey for St Patrick’s day.

Since high school…got a late start, huh?

I’ve never seen their bourbon. I get their rye sometimes, it’s pretty good.

It’s weird, I hear that about Buffalo Trace but there’s always lots of bottles on the shelf at stores here.

Just relaxing after a long week.

Enjoying one of my favorite bourbons and one of my favorite beers after being on call for a week.

I was recently trying to get some info on a DB iron fireman boiler was told by DB and the local DB distributor that no info is available.

One of my favorites.

Vaillant’s have a problem with overheating and melting gas valves and ignition modules. Vaillant is no longer in business. I typically recommend replacing these pieces of junk when they start having...

In my first year in the field I was troubleshooting a small residential boiler that was having the pilot go out occasionally. This was a standing pilot with a thermocouple. I was testing my theory...

I’ve done the same thing with the HSI touching the burner face. When I did it there was a meltdown. It started glowing like normal, then grew to a blinding white light that lasted for a couple of...

This occurred in my county. The company that did it is a decent size. Some of their work isn’t the greatest but they have a decent reputation. They have a couple pretty good techs. The negligence in...

Do not cook like a prime rib. I’ve only cooked them in a smoker but my mom makes a tasty oven braised brisket with tons of onions. If I was to cook one in the oven, I’d braise it.

I agree about using gauges more when new, especially on PMs, but you also need to touch, look, and listen so you get a feel for what a working system should feel, sound, and look like. It’s also...

I replaced one on a Bard recently that the only way to get it in place, without cutting out a bunch of piping, was to turn it on it’s side. Didn’t have any issues on start up.

That’s what you get for trusting technology :grin2:

I’m gonna say no. It a difference between two numbers, so it should always be a positive number…unless it’s zero.

I am just arguing semantics, kind of. I misspoke about saying negative subcooling was possible, when I meant it was possible to measure negative sub cooling which means there is only superheated...

Temperature is not the unit of measurement for cooling. Degrees is the unit of measurement for temperature. There is no unit of measurement for cooling because cooling is a relative term. Heat, or...

Exactly. Just because something doesn’t technically exist doesn’t mean we can’t measure it and then convert to something that does exist. Just like checking the subcooling on a system, ending up with...

BTUs are the unit of measurement for heat, not cool.

What units of measurement do you use to measure cooling?