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  #1  
Old 11/18/08, 2:35 PM
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Exclamation Help please

RNC (rigid Non-Metallic Conduit) utilized for ac condensate drain - I need to prove RNC is not rated for a drain application.

I can't find the damn spec sheet for some reason.



and...

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  #2  
Old 11/18/08, 2:49 PM
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Joe Funderburk, CMI Joe Funderburk, CMI is offline
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Default Re: Help please

This is all I have on it:

"IRC M1411.3.2 Drain pipe materials and sizes. Components
of the condensate disposal system shall be cast iron, galvanized
steel, copper, polybutylene, polyethylene, ABS,
CPVC or PVC pipe or tubing. All components shall be
selected for the pressure and temperature rating of the
installation. Condensate waste and drain line size shall be
not less than 3/4-inch (19 mm) internal diameter and shall not
decrease in size from the drain pan connection to the place
of condensate disposal. Where the drain pipes from more
than one unit are manifolded together for condensate drainage,
the pipe or tubing shall be sized in accordance with an
approved method. All horizontal sections of drain piping
shall be installed in uniform alignment at a uniform slope."



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  #3  
Old 11/18/08, 2:50 PM
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James H. Bushart James H. Bushart is offline
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Default Re: Help please

Why would you need to "prove" that an electrical item being used for something for which it was not designed to be used for (a violation of NEC 2005 103B) is improper?



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  #4  
Old 11/18/08, 2:53 PM
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Michael Larson Michael Larson is offline
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Default Re: Help please

Does anyone see a real problem with this installation?

The NEC doesn't apply as it is not an electrical installation.



You can argue with intelligent people but to argue with a mush head is like trying to grab fog-Thomas Sowell

Never underestimate the difficulty of changing false beliefs by facts. - Henry Rosovsky-Harvard

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Services provided in East MN and West WI

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  #5  
Old 11/18/08, 2:54 PM
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Default Re: Help please

Quote:
Originally Posted by jfunderburk View Post
This is all I have on it:

"IRC M1411.3.2 Drain pipe materials and sizes. Components
of the condensate disposal system shall be cast iron, galvanized
steel, copper, polybutylene, polyethylene, ABS,
CPVC or PVC pipe or tubing. All components shall be
selected for the pressure and temperature rating of the
installation. Condensate waste and drain line size shall be
not less than 3/4-inch (19 mm) internal diameter and shall not
decrease in size from the drain pan connection to the place
of condensate disposal. Where the drain pipes from more
than one unit are manifolded together for condensate drainage,
the pipe or tubing shall be sized in accordance with an
approved method. All horizontal sections of drain piping
shall be installed in uniform alignment at a uniform slope."
Thanks Joe unfortunately I have that .... still looking for the approved applications of RNC. I know I've read and been told by plumbers/electricians alike that it is a no-no now I need the documentation to prove it.
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  #6  
Old 11/18/08, 2:55 PM
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Michael Larson Michael Larson is offline
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Default Re: Help please

I'd be more concerned with the lack of an anti siphon vent tee and riser.



You can argue with intelligent people but to argue with a mush head is like trying to grab fog-Thomas Sowell

Never underestimate the difficulty of changing false beliefs by facts. - Henry Rosovsky-Harvard

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  #7  
Old 11/18/08, 2:58 PM
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Default Re: Help please

Quote:
Originally Posted by mlarson View Post
Does anyone see a real problem with this installation?

The NEC doesn't apply as it is not an electrical installation.
pvc glue can not make a permanent water tight seal when used on RNC (so I've been told numerous times over the years. It's always been taboo to my knowledge. If I'm wrong that's fine ...but I would like to find viable proof either way.
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  #8  
Old 11/18/08, 2:58 PM
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Default Re: Help please

Quote:
Originally Posted by mlarson View Post
I'd be more concerned with the lack of an anti siphon vent tee and riser.
That isn't an issue because it was already stated in the report and understood by all parties.
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  #9  
Old 11/18/08, 2:59 PM
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Michael Larson Michael Larson is offline
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Default Re: Help please

Quote:
Originally Posted by cduphily View Post
pvc glue can not make a permanent water tight seal when used on RNC (so I've been told numerous times over the years. It's always been taboo to my knowledge. If I'm wrong that's fine ...but I would like to find viable proof either way.
I agree that what ever solvent is used it must be compatible with both materials but there are solvents for this purpose.



You can argue with intelligent people but to argue with a mush head is like trying to grab fog-Thomas Sowell

Never underestimate the difficulty of changing false beliefs by facts. - Henry Rosovsky-Harvard

Michael Larson
Hudson, WI

Services provided in East MN and West WI

[/I]
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  #10  
Old 11/18/08, 3:00 PM
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Michael Larson Michael Larson is offline
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Default Re: Help please

Quote:
Originally Posted by cduphily View Post
That isn't an issue because it was already stated in the report and understood by all parties.
Sorry.



You can argue with intelligent people but to argue with a mush head is like trying to grab fog-Thomas Sowell

Never underestimate the difficulty of changing false beliefs by facts. - Henry Rosovsky-Harvard

Michael Larson
Hudson, WI

Services provided in East MN and West WI

[/I]
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  #11  
Old 11/18/08, 3:00 PM
Brian A. MacNeish Brian A. MacNeish is offline
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Default Re: Help please

Quote:
Originally Posted by mlarson View Post
I'd be more concerned with the lack of an anti siphon vent tee and riser.

Yep!!!
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  #12  
Old 11/18/08, 4:06 PM
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Default Re: Help please

Well, after talking to 2 LICENSED electricians (licensed through a bordering state) and 1 LICENSED Plumbing contractor - they agree with Brian, they know of no codes/documentation to prevent it but they discourage doing it.
I'm just a deal killer I guess ....well in this instance a hindrance to close escrow seeing as though my client bought the home anyway.

Feel free to throw your 2 cents into this.
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  #13  
Old 11/18/08, 4:11 PM
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Default Re: Help please

Are the pipe and connectors different types of plastic ?, as that may be a problem.
May require different adhesives?
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  #14  
Old 11/18/08, 4:11 PM
Speedy Petey Speedy Petey is offline
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Default Re: Help please

I'm not sure why you are even asking electricians. As Michael stated, this is NOT an electrical issue.

Your answer is right here:
Quote:
All components shall be
selected for the pressure and temperature rating of the
installation.
Electrical conduit is not rated for pressure so that would preclude it from being used.

I agree, this is not a big deal, but it is not compliant.
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  #15  
Old 11/18/08, 8:48 PM
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Erby Crofutt Erby Crofutt is offline
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Default Re: Help please

Did you think about contacting the manufacturer of the RNC?
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