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Old 03-22-2018, 05:29 PM   #1
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Default Heat Trace installed in drain line

I have installed heat trace in roof drain lines before and have a customer which we wired their building request heat trace be installed the entire drain line because it’s freezing up all winter. The line is 4” PVC and is 150’ long (mostly underground) until it hits the catch basin-man hole. In looking on the web nothing really states that this can be installed like this, anybody else come across this?


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Old 03-22-2018, 05:33 PM   #2
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Sewer gas is explosive. Needs to be traced on the outside.
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Old 03-22-2018, 05:39 PM   #3
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Sewer gas is explosive. Needs to be traced on the outside.


No, rain water only. Is not connected at all to the sewage system.


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Old 03-22-2018, 06:32 PM   #4
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I know they build a kit that can be installed in the drain. I think it was at a farm supply house.

https://www.heatersplus.com/ilh.html

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Old 03-22-2018, 06:39 PM   #5
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Quote:
Originally Posted by Kunolop View Post
I have installed heat trace in roof drain lines before and have a customer which we wired their building request heat trace be installed the entire drain line because it’s freezing up all winter. The line is 4” PVC and is 150’ long (mostly underground) until it hits the catch basin-man hole. In looking on the web nothing really states that this can be installed like this, anybody else come across this?


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Run the heat trace outside of the PVC pipe.,

second thing .,

How deep this pvc drain pipe is in and pitched correct ?
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Old 03-22-2018, 06:43 PM   #6
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Raychem. Any other brand and you're already screwing up.
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Old 03-22-2018, 06:51 PM   #7
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Run the heat trace outside of the PVC pipe.,



second thing .,



How deep this pvc drain pipe is in and pitched correct ?


Pipe is 5’ under a lumber yard asphalt slab, is 4” and draining properly when it’s not frozen. Raychem rep says to go ahead and use GM-2X line? Guess I will


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Old 03-22-2018, 07:47 PM   #8
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Quote:
Originally Posted by 99cents View Post
Sewer gas is explosive. Needs to be traced on the outside.
In the US roof drains don't typically go into sewer lines, they go into storm drains.
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Old 03-22-2018, 07:56 PM   #9
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Quote:
Originally Posted by Kunolop View Post
Pipe is 5’ under a lumber yard asphalt slab, is 4” and draining properly when it’s not frozen. Raychem rep says to go ahead and use GM-2X line? Guess I will


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If the drain is 5' under ground, what is your frost line?

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Old 03-22-2018, 08:00 PM   #10
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If the drain is 5' under ground, what is your frost line?

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Normally 3-4’ here under regular conditions, but in a high traffic area it can get to 8’!


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Old 03-22-2018, 08:12 PM   #11
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Quote:
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Normally 3-4’ here under regular conditions, but in a high traffic area it can get to 8’!


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Wow!!

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Old 03-22-2018, 08:35 PM   #12
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Raychem. Any other brand and you're already screwing up.
Pffft. Raychem, Thermon, EasyHeat, Nelson, same chit.
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Old 03-22-2018, 08:40 PM   #13
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Put self reg inside the pipe but go to a manufacturer's website to check out maximum run length and circuit breaker size. 240V cable most likely.
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Old 03-22-2018, 08:45 PM   #14
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Phone EasyHeat in Elmira. Good guys.
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Old 03-22-2018, 09:06 PM   #15
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In the US roof drains don't typically go into sewer lines, they go into storm drains.
We have storm sewers and we have sanitary sewers.
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Old 03-22-2018, 09:10 PM   #16
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Sewage plants call it I&I. Rain can easily overload and overflow a wastewater plant. Older systems in the US ran them together. Newer systems separate them.

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Old 03-22-2018, 09:20 PM   #17
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We have storm sewers and we have sanitary sewers.
Exactly, this isn't some third world country.
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Old 03-22-2018, 10:09 PM   #18
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It took a while to digest why we call the **** sewer a "sanitary" sewer. It creates sanitary conditions in the buildings which they are connected to.

And storm sewer doesn't sound as clean as it is, because of the word sewer. But that's what we call it in the code books.

Our city has a marina. They call it the City Yacht Basin. To me a basin is something my mother handed me when I was sick so I could vomit in it. I'd much rather see the city marina called the "City Marina". But I'm not on city council.
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