Connecting water heater with pex


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Old 03-02-15, 04:07 PM
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Connecting water heater with pex

This ok for pex pipe?
View image: IMG 20150302 185943451
 
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Old 03-02-15, 04:12 PM
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That short white piping off of the T & P valve needs to be copper and go down almost to the floor.
Is that a BX connector on your NM cable there ?

I don't see a problem with the pex but I'm sure others will chime in.
 
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Old 03-02-15, 04:17 PM
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That short white piping off of the T & P valve needs to be copper
Code changed AFAIK... Plastic piping is allowed for the relief valve now.. Some time ago..

Connections to the heater is supposed to have a ninimum of 18" copper I believe before any transition to pex...
 
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Old 03-02-15, 04:39 PM
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I use these. They seem to clear the body and have a metal attachment point that can be removed.

Camco Polypropylene Runoff Top-Mount Water Heater Drain Tube - 60 in.-10962 - The Home Depot
 
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Old 03-02-15, 05:32 PM
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The pex here is the cold water pipe to a bottom inlet.
Just worried if it needs support and whether it's too close to heat from top of heater?

What's a bx connector? The one I have is a plastic one.
 

Last edited by qwertyjjj; 03-02-15 at 07:31 PM.
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Old 03-05-15, 02:25 PM
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Does pex need supporting horizontally where it comes from the shark bite connector?
And is it OK across the top of tank like that?
 
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Old 03-05-15, 03:43 PM
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Without a doubt support any pipe to where it is straight into a pex or sharkbite fitting. Pex is OK across the tank, just not pretty The electrical connector you have going into the water heater pecker head does not have a strain relief on it, and is made for BX. Yours should look like this, or metal with screw strain reliefs.

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Old 03-05-15, 08:47 PM
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What's the best way to support the pipe?
And what's a strain? Why is the plastic for the nmd cable bad?
 
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Old 03-06-15, 02:47 AM
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Attach a block of wood to your stair riser and use a clamp to hold the pex in the proper position. As far as the strain relief, you are missing a collar and possibly an insert to make the connection solid. You don't have anything that will keep a good sharp tug from disconnecting the wires inside. Here are your strain relief with the cap applied and a screw type strain relief.

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Old 03-06-15, 06:59 AM
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And what's a strain? Why is the plastic for the nmd cable bad?
The power wiring to the heater from the above joists really should be in conduit. I'd use 3/4" steel flexible metal conduit.
 
 

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