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Mainly because you do not want power on to the unit when doing the descale. I don’t know if it is even possible to run the pump without heating water and you definitely don’t want to be heating the vinegar solution inside the heat exchanger. The service valves are designed to enable a flush using an external pump. Good question.

Glad it was helpful!

Per UPC 908.2.4: Paraphrasing, WC must be furthest DOWNSTREAM. His illustration, while correctly quoting UPC, is wrong for UPC. The illustration shows the WC farthest upstream. Keep all wet vented connections upstream of the WC connection, even if you have to loop one or more back around (observing proper slope). Read all of 908.2. There area only 5 sections. Read it, then read it again, and again until you comprehend it. That's what I did. :) If you have a fixture in the group, or any other fixture on the house for that matter, that has it's own vent, then it can connect downstream of the WC. Kind of a duh statement, as your main drain line may pass other fixtures in the house on it's way out of the house.

Interesting! Certainly is a lot more work!

Awesome, thank you!

Glad you enjoyed it!

You're welcome!

Hello. The details about seismic in Utah are in the Utah Amendments. When a state adopts a code they often make amendments to the code. le.utah.gov/xcode/Title15A/Chapter3/C15A-3-P3_1800010118000101.pdf Page 4 talks about water heater seismic.

@@plumber-tom9470 Yeah, I'd already seen that and it is just a vague restatement of the same general description of seismic strapping found all around the internet. Does not give any specifics about strapping type, weight loads required of the strap materials, weight load required of the anchors, etc--and that's what SLC Corp is hassling me about / trying to impose on me.

As I stated in my original reply.

@@Big_Island_Boi I know what you mean. I have dealt with that before. Might me in the building code? But ultimately, IPC Chapter 1 gives the Code Official (inspector) the authority to interpret and enforce the code. So my approach has been to just go with what they recommend. Fighting an inspector makes it more difficult to deal with them in the future.

@@plumber-tom9470 Eh. The entire point of having specific building codes is to prevent individual inspectors or even entire departments from "interpreting" or extrapolating them into something that is just an opinion--not a fact. If the code books says "X", then X is the code. If the code book says nothing about it, inspectors should not be able to just make stuff up that they like. Laws are laws--and the codes are laws. And, yeah, maybe arguing with an inspector about something they are just making up out of thin air might not win you friends in the plumbing department--but the other side of that coin is that if nobody pushes back--they just keep repeating their bad behavior. And from what you are saying so far, the IPC does not specify the type of strapping material or the strength of the anchors required, etc. Correct?

Awesome! Glad I could help!

Oh. Nice catch! Looks like I will need to make a correction on that video!

@ thanks ! Hey do you have a contact email?

Probably ok for now. When it needs to be replaced I would recommend changing that.

Glad to help

Yes. Code requires expansion tanks to be installed with water heaters.

Commented too soon, answered at around 8 minute mark

Cool. Thanks for watching!

I agree. It’s good to be able to do this in your head. Some people really struggle with this though. It takes practice.

You can do it!

Cool. 😎 what state are you in?

Ooh. That’s tough. Not aware of flexible bits. Might have to open the ceiling.

Yes. The International Code Council has a store on their website. iccsafe.org

Good question. Depends on the water heater size and the pressure of the system. Can be complicated. But generally you can use a 2.5 gallon expansion tank for a 40 gallon or smaller tank. And a 4.5 gallon expansion tank for a 50 gallon or larger or multiple tanks.

Your welcome!

Nice.

It is in the comments below the video.

That may be a matter of interpretation. If UPC requires connection on the horizontal downstream, that illustration may not work for UPC.

He said ipc , w/c must be the furthest upstream, and later that under the upc the w/c must be furthest downstream. My area is ipc, and now I'm confused about something already confusing

@@patrickreaves8053 Sorry. It can be confusing. If you watch again, I only state that the toilet has to be the most upstream for UPC. IPC does not have that requirement.

too small for most roof drains

Could be.

You’re welcome. One you calculate then you will need to subtract for fitting allowances (I have another video on that). Then you can assemble the pipe.

@plumber-tom9470 What happen though, I have problems assembling the rolling offset. I know from the explanation how to calculate the rolling offset. Do you by chance, have a video showing how to assemble the rolling offset AFTER calculation is done?

You can find a link in the comments below the video

Here you go: a.co/d/07kVHRY

Glad to hear it! You earned it!

Hello. Code has minimum per fixtures listed, but not a minimum per building. Each building will differ depending on the number of fixtures connected, the size of the service pipe, and the pressure of the system. So there is not a standard per building.

Hello. Flow rates are addressed in IPC Chapter 6. I think flow rates would vary from one house to another, depending on how many fixtures there are and the sizes of pipe. I am not aware of any minimum per house, but I imagine it would be the total for all the fixtures connected to the system. Once again, that would vary from one building to another, which might be why there is no minimum per building.

For that I would refer you to my videos on chapter 9. There are different sizing tables depending on the venting method.

Noted! Thanks!

Use 0 for emergency floor drains. Use 2 for other floor drains that would regularly be receiving water.

Thank you! 😃

Sorry! I wish the United States would go metric!

I do not know that there is a limit to that. The 3” drain serves as a wet vent to the tub. Usually they would not be too far apart for a bathroom group.

Thanks for commenting. Which code are you referring to? Do you have references for those requirements?

@plumber-tom9470 I'm a retired plumbing contractor of almost 30 years. I then was a commercial plumbing inspector for the city of Los Angeles. When I retired 7 years I purged myself of all the plumbing in my brain. I just always remembered doing it this way and enforcing it that way. I think it's 908.1 UPC. I don't have a code book in front of me to look it up exactly.

@@mrpickle219 You're awesome! I will look into it. Thank you for serving as a code official! You are the ones who keep quality in construction.

Nice. Sounds like a good arrangement.

Good plan.

Spade bits are really difficult. I don't even own any because I feel they are so ineffective. These 3 tooth whole saws are incredible by comparison.

@@plumber-tom9470Thank you Tom. I didn’t even know a 3-teeth style existed, but a quick Google search shows several options.

@@thenexthobby 3 tooth hole saws are the best!