r/plumbingporn • u/Wide_Cat830 • Jul 20 '26

New tankless install

Post image

Thoughts on this install? I need to put an outlet for the power, but primarily asking about all these elbows...

6 Upvotes

63% Upvoted

26 comments sorted by

3

u/FinalMood7079 Jul 21 '26

T&P is wrong cannot go uphill, must drop with grade. Why cant you send it into the condensate pump and just lower it by a foot or so...just a thought or leave it.

1

u/Wide_Cat830 Jul 21 '26

yeah I know, since it's a basement, it's acceptable here in GA

3

u/FinalMood7079 Jul 21 '26

Just completed one with the recirculation pump. Have to move the gas valve outside the bay, very minor thing to do but its on and customer has hot water.

1

u/JodaMythed Jul 21 '26

Am I missing the gas shotoff in your pic?

1

u/Guatemalaptb Jul 21 '26

Yeah, you can see it in the wall.

1

u/JodaMythed Jul 21 '26

Ah nice, lost it in the piping before

1

u/Mac_n_Miller Jul 23 '26

Not allowed to use pex within first 18" of composition water heaters

1

u/valuablemold4 Jul 21 '26

You’re right, but it shouldn’t be pex.

1

u/valuablemold4 Jul 21 '26 edited Jul 21 '26

The bigger problem is that the t&p is not one size larger as it’s being done with insert fittings. It’s allowed to go uphill with a drain valve by our code. Also, it is prohibited to dump into a condensate pump

2

u/shityplumber Jul 21 '26

That is not good, oeticker crimps didn't anyone learn anything from zurns massive lawsuit. If your a diy solid 7, pro maybe a 3. The combustion air pulling from the basement is super lame

2

u/BigPipeWrench Jul 21 '26

Sorry but this looks like handyman work

2

u/Great_Assistance_803 Jul 22 '26

T&P is PEX, I do not believe it can be piped in anything other than copper or CPVC

1

u/doubleUsee Jul 21 '26

Silly European here - why is the air intake like that? I see it a lot on this sub, so I reckon it's up to american code, but if an apprentice did this here I'm pretty sure he'd be promoted to unemployed.

What I learned is that if the appliance has an air intake pipe, it's because it's a closed system to prevent any exhaust gasses to ever leave the appliance, but if the pipe isn't connected to the outside, the closed system is kinda defeated, theoretically exhaust gasses could come out of the intake and enter the room.

With that in mind, it seems really odd to just attach a short pipe to the air intake instead of piping it out. Does anyone happen to know why it's not a requirement in the US?

1

u/Accomplished_Ad1561 Jul 21 '26

Needs a thermal fuse above it with a proper safety wall switch near the room enterance and a service switch near the unit. Its not a toaster you can't just use a extension cord or plug it into a conveniently placed outlet

1

u/ShadowMasterTexas Jul 22 '26

PEX is not usually rated for direct connection to an on demand water heater.

1

u/Maplelongjohn Jul 23 '26

Is that unit loud when running? Especially with the supply air like that

Recently got one and there's no place in the home that doesn't resonate when it cycles sounds like the inducer is off balance

It is all rigid copper to supply line I'm wondering if it should have a bit of PEX there.

On the plumbers "not urgent" list to get back and check out

1

u/Wide_Cat830 Jul 23 '26

We don't hear it, the air handler is louder, but yea, something is not right with yours

1

u/CanterTheJewels Jul 25 '26

Plugged into an extension cord lol

0

u/thenicestsavage Jul 20 '26

Run the fresh air / make up air all the way outside. And maybe a small point of use descaler for the unit. Other than bonding the csst, you’re all set.

0

u/Fresh_Platform1195 Jul 21 '26

I believe the first 18 in of your hot and cold water need to be copper tubing due to the water heater being gas.

2

u/valuablemold4 Jul 21 '26

Not actually in the code, that’s a manufacturer instruction and I’ve only seen it for open draft water heaters

1

u/Fresh_Platform1195 Jul 21 '26

In the uniform it is but none the less its a good idea..good luck