Halp Ever install an electric water heater?

I've never actually worked with PEX but I imagine it's a pretty easy/quick job to install. PEX is also much cheaper than copper - I got a fright last time I bought copper pipe.

In my house, I've got 3/4" copper mains, 3/4" copper in/out of the water heater, etc. with 1/2" branches to things. No problem taking a shower with the dishwasher/washer/whatever running. Of course, few other people will spring for the extra $$$ to do that.
 
gee said:
I've never actually worked with PEX but I imagine it's a pretty easy/quick job to install. PEX is also much cheaper than copper - I got a fright last time I bought copper pipe.
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I havent had to work with it yet either
You need a special tool to do the compression fittings
Other than that it looks pretty easy to deal with
 
so whats the point of the manifold?

You stlil have run a hot and a cold to each fixture
is it to avoid having 17 tee's and stuff?
 
Domon said:
so whats the point of the manifold?

You stlil have run a hot and a cold to each fixture
is it to avoid having 17 tee's and stuff?
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Dunno
Being able to turn everything on/off from one location is kinda nice.
I can turn off the outdoor hose bibs and drain them on the one or two days a year it freezes here.
 
Domon said:
so whats the point of the manifold?

You stlil have run a hot and a cold to each fixture
is it to avoid having 17 tee's and stuff?
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You home run each fixture to the supply. There is less loss of pressure when you turn on multiple taps in the same room than in a sequential system.

So much for me not knowing anything
 
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The manifolds aren't needed, you can tee tap 17 times if you want. Difference is you won't have knocking like with copper.

We ripped the copper out of my brothers house and put in PEX. Took about 4 hours (ranch style house with open basement so everything was exposed). What we got for recycling the copper pipes almost paid for the PEX. :lol:

The tool wasn't cheap but it can do all sizes and will probably last forever. Most faucets come with PEX fittings now...
 
ZRH said:
You home run each fixture to the supply. There is less loss of pressure when you turn on multiple taps in the same room than in a sequential system.

So much for me not knowing anything
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1) thanks for the info
2) fuck you for the attitude
 
turns out i made my own cpvc manifold when i redid my plumbing. Nothing stems off any other line, it all off the mains.

that said, you run a fuckton more pipe doing this it would seem
 
Coqui said:
Why does a submanifold not save water compared to a trunk and branch if it's using the same plan as a home run just subdivided more?
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Because you still have to get hot water to the sub-manifold. It's probably not as much loss as in a sequential system but it's still more than a home run.
 
plot said:
yup, which is why i wouldn't bother with a manifold personally.
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You have to estimate actual water usage. If you have a lot of stuff that runs at the same time it can be a big deal. If you ave one bath and a kitchen you wont see much improvement.

It's especially noticeable in multiple occupancy applications. Lots of older houses around here are du/tri-plex apartments with one water line. That's where youd see the most improvement.
 
gee said:
Here's what I'd do. Hit up home depot and get..

Two of these:
http://www.homedepot.com/p/Watts-3-...ater-Connector-FFSS-18/202255005#.UqT0uSeQOLY

Two of these, or whatever matches your CPVC diameter and the thread on the water heater hoses:
http://www.homedepot.com/p/NIBCO-3-...ition-Adapter-C4704-CT/100187109#.UqT0ZSeQOLY

Also CPVC cement.

When the tank's drained, cut the CPVC halfway up the pipes attached to the hot water heater - use a proper cutter as domon suggested, or mark a circle around the pipe with a piece of paper and a marker and carefully use a hacksaw. Weld on the new adapters. Pull the heater out, put the new heater in and make the connection with the flex hoses.

This assumes the heat pump heater has both connections on the top.
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Any idea why this one:

http://www.lowes.com/pd_142758-104-...t=stainless+water+heater+connector&facetInfo=

is half the price of this one:

http://www.lowes.com/pd_136681-104-...t=stainless+water+heater+connector&facetInfo=
 
fly said:
Uhh, why would there be lead in plumbing?
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The one with the one in the model # is 1 inch fittings. Lowe's is retarded and doesn't state that. It's bigger so it costs more. Check Amazon for both product numbers and you'll find the full listing
 
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