Thread: Hot water lines

Hello, I hope someone can help me here. Trying to figure out what all the lines coming out of hot water tank are. There's a total of 9 hot water fixtures through the condo, what are all the rest, cold?

Similar Threads:

• two water service lines?
• Insulating water lines
• Schedule 40 for water supply lines
• Water heater supply lines
• Water supply lines in attic

If I am looking at it correctly, the third photo tells the story:

Cold water comes in from the top left (where the shut off valve is).

The top manifold are cold water lines.

The cold is tapped off to the water heater.

There is a mixing valve.

The hot from the water heater goes to the bottom of the mixing valve.

Below the mixing valve are two hot water lines which are not tempered through the mixing valve - clothes washer and dishwasher maybe?

From the mixing valve to the right is a manifold with tempered only water which goes to all the 'hot' for the fixtures.

Jerry, thanks for the reply. I think your right, I just never seen so many lines coming out of a HW Tank.
K

Originally Posted by Jerry Peck

If I am looking at it correctly, the third photo tells the story:

Cold water comes in from the top left (where the shut off valve is).

The top manifold are cold water lines.

The cold is tapped off to the water heater.

There is a mixing valve.

The hot from the water heater goes to the bottom of the mixing valve.

Below the mixing valve are two hot water lines which are not tempered through the mixing valve - clothes washer and dishwasher maybe?

From the mixing valve to the right is a manifold with tempered only water which goes to all the 'hot' for the fixtures.

In a condo inspection, I would be making sure there is a faucet (or a floor heating loop) for every one of those heated lines. Otherwise, another unit could be getting heated water from the same source.

I remember a building with 7 units where one guy's electric meter supplied the common laundry room and a second WH.

"Water Heater" (WH) is more correct, as in professional.

John, that's what I was worried about. There is 9 lines and 9 fixtures.

Originally Posted by John Kogel

In a condo inspection, I would be making sure there is a faucet (or a floor heating loop) for every one of those heated lines. Otherwise, another unit could be getting heated water from the same source.

I remember a building with 7 units where one guy's electric meter supplied the common laundry room and a second WH.

"Water Heater" (WH) is more correct, as in professional.

Originally Posted by Ermanno D'Angelo

John, that's what I was worried about. There is 9 lines and 9 fixtures.

Likely with a home run to/from the manifolds and each fixture.

It is not uncommon for manifolds to be plumbed with home runs to/from each fixture - maybe it is even 'standard practice' to plumb manifolds that way as it makes best use of the manifolds (rather than taking one run out to all fixtures and dead-ending the run at the last fixture) ... albeit that method uses more piping than a single run out to the end uses.

Originally Posted by Jerry Peck

Likely with a home run to/from the manifolds and each fixture.

It is not uncommon for manifolds to be plumbed with home runs to/from each fixture - maybe it is even 'standard practice' to plumb manifolds that way as it makes best use of the manifolds (rather than taking one run out to all fixtures and dead-ending the run at the last fixture) ... albeit that method uses more piping than a single run out to the end uses.

Yes, but with PEX it might actually be cheaper to run home runs for each fixture. I have seen systems that a manifold of say 3/4-1 inch to sub-manifolds in other locations in the house to say 1/2 inch runs as well.

Hi Jerry, havent talked in a while. Hope all is well!