Hot Water Heater PRV plumbing

[skon1212]

I know this is the electrical board but I had a plumbing question and wasnt sure where to post on here, but always get great advice when I come here. I have a hot water heater that is installed in a hall closet in the interior of the house, there is no exterior wall around it. I am thinking of replacing the hot water heater to one with an automatic shut off valve since two previous ones had failed before we bought the house 6 years ago. When looking at the plumbing to the hot water heater I noticed the Pressure Relief Valve is on top of the heater and the line goes from the valve 90's down the HWH then 90's again into the wall leading into hall storage area. I am just curious where this line might lead to . On the backside of the hall storage area there is a bathroom tub and shower, so could this line drain somewhere in there? I am just courious if anyone knows where this line may go from past experiences. My plan was to check the valve and empty and clean the tank to see how bad it is, but if I cant see if water is draining through the PRV how can I tell if it is functioning.
TIA for any suggestions or experiences.

 

[The Cobbler]

relief valves are supposed to exit to daylight so you know if they are leaking .
you could try to trigger the valve to see where it exits , but you run a hi risk that it won't want to seal after .
edit
what is the line plumbed with? can you cut into it & run water thru it to see where it exits?

 

[skon1212]

relief valves are supposed to exit to daylight so you know if they are leaking .
you could try to trigger the valve to see where it exits , but you run a hi risk that it won't want to seal after .
edit
what is the line plumbed with? can you cut into it & run water thru it to see where it exits?

Its plummed with copper and really the only outlets I see on the side of my house are for the AC condensation. I really dont want to cut into a copper line and there is no drain in that closet of course. I thought about moving the HWH to the garage, but the quotes to do it were rediculous.

 

[Jim greengo]

Did they increase the size of the drip leg before the 2nd 90?

 

[skon1212]

Did they increase the size of the drip leg before the 2nd 90?

No, the pipe size is the same the whole way.

 

[mc4life27]

I know this is the electrical board but I had a plumbing question and wasnt sure where to post on here, but always get great advice when I come here. I have a hot water heater that is installed in a hall closet in the interior of the house, there is no exterior wall around it. I am thinking of replacing the hot water heater to one with an automatic shut off valve since two previous ones had failed before we bought the house 6 years ago. When looking at the plumbing to the hot water heater I noticed the Pressure Relief Valve is on top of the heater and the line goes from the valve 90's down the HWH then 90's again into the wall leading into hall storage area. I am just curious where this line might lead to . On the backside of the hall storage area there is a bathroom tub and shower, so could this line drain somewhere in there? I am just courious if anyone knows where this line may go from past experiences. My plan was to check the valve and empty and clean the tank to see how bad it is, but if I cant see if water is draining through the PRV how can I tell if it is functioning.

TIA for any suggestions or experiences.

Btw it’s not a hot water heater. It’s just a water heater. It makes hot water.


Sent from my iPhone using The Garage Journal mobile app

 

[Jim greengo]

No, the pipe size is the same the whole way.

Around here we have to upsize the drip leg before a 2nd 90

 

[flat350]

If it doesn't drain to daylight out side it should be going to a p trap inside somewhere.Are you on a slab or basement/crawl?

 

[yatg]

Hunt around for it. At my last house I had a water heater in the garage. The drain line went into the wall, then down under the slab and 25' or so to the side yard where it popped up with a couple of ells to keep dirt out. But it was buried and I only found it because I was digging in the area.

 

[Dagny]

Thank God for basements.

 

[JRC3]

relief valves are supposed to exit to daylight so you know if they are leaking .

"Daylight" means outside. They don't have to go outside, at least not in OH and probably every other cold state. A dripping valve could eventually freeze the pipe closed and render the PRV useless. Here they turn down to the pan so if it leaks the pan catches the water. It's also to prevent scalding anyone near by.

Once again, it's hard to give advice when we don't know the OP's location.

 

[The Cobbler]

ok, maybe daylight wasn't the right term. exit to open atmosphere may have been a better word

 

[Jim greengo]

"Daylight" means outside. They don't have to go outside, at least not in OH and probably every other cold state. A dripping valve could eventually freeze the pipe closed and render the PRV useless. Here they turn down to the pan so if it leaks the pan catches the water. It's also to prevent scalding anyone near by.

Once again, it's hard to give advice when we don't know the OP's location.

What he said.