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Posted by Jeffrey Lebowski on April 1, 2007, 11:09 pm
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> "New Directions In Building Services \(Australia\)"
<snip>
> I'm not sure how the above ties in specifically to ABS pipe.
> All plastics, when burned, release PVC's, or polyvinylchlorides.
<Uhhm you getting off onto some odd and substantially wrong track>
Pvc, when heated releases chlorine gas--what hapen is in contact with
humidity the result is hydrochloric acid.
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> Or, as we in the field call the products of combustion,
> methyl-ethyl-bad-shit.
Depends on temps and catalysts available--burn plastics high enough, then
only thing left will be co2 and ash.
Big point of contention, depression and anxiety for me--I know the end of
mankind, seen it already.
Why not burn the plastics--better than going into a landfill by a large
margin.
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> But there is a need to switch to a more temperature-resislient venting
> material.
> I was just surprised to hear you say that you've known this since the
early
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> ninety's
ABS...still best to just use it as a sewer pipe.
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Posted by gofish on March 27, 2007, 7:31 pm
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>Are you guys in the States getting a change to the vent code re: plastic
>venting?
>As of July 1 2007, in Canada, all plastic venting will have to comply with
>ULC S636, which prohibits the use of ABS, and requires any new
>installations AND retrofits to use approved PVC or CPVC ,stamped with the
>new code of S636 on the pipe.
>That means existing furnaces and water heaters currently using ABS will
>have to have their venting changed, regardless of where the venting runs,
>ie; inside drywalled ceilings.
>Customers are gonna love it when you tell them their basement ceiling has
>to ripped open!
Ha! Just wait until code changes forces multi parameter demand
control ventilation down your throat.
Test your knowledge:
A ventilation rate of 20 cfm per person correspondes to an indoor
vs outdoor co2 differential of how many ppm?
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Posted by Bob_Loblaw on March 27, 2007, 9:48 pm
gofish@gonefishin.net wrote
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> Ha! Just wait until code changes forces multi parameter demand
> control ventilation down your throat.
>
> Test your knowledge:
> A ventilation rate of 20 cfm per person correspondes to an indoor
> vs outdoor co2 differential of how many ppm?
I have zero knowledge of this, and I'm not about to pretend that I do.
Maybe you could bring me up to speed on this.
I'd appreciate any info you could give.
I think it's a move in the right direction, given the tightness of new
construction, and the off-gassing of home products.
IAQ is the next hurdle for us as techs to teach the homeowner.
--
Respectfully, Bob
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Posted by gofish on March 27, 2007, 10:26 pm
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>gofish@gonefishin.net wrote
>> Ha! Just wait until code changes forces multi parameter demand
>> control ventilation down your throat.
>>
>> Test your knowledge:
>> A ventilation rate of 20 cfm per person correspondes to an indoor
>> vs outdoor co2 differential of how many ppm?
525 ppm
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>I have zero knowledge of this, and I'm not about to pretend that I do.
>Maybe you could bring me up to speed on this.
>I'd appreciate any info you could give.
>I think it's a move in the right direction, given the tightness of new
>construction, and the off-gassing of home products.
>IAQ is the next hurdle for us as techs to teach the homeowner.
no worries Bob. In all liklihood you will never have to deal with
this....in your lifetime.
First off, its a commercial thing and not so much a resi-.
How many resi systems have a modulating economizer controlled by a co2
sensor that calculates the differential between indoor & outdoor co2
levels....
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Posted by Bob_Loblaw on March 27, 2007, 11:03 pm
gofish@gonefishin.net wrote
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> How many resi systems have a modulating economizer controlled by a co2
> sensor that calculates the differential between indoor & outdoor co2
> levels....
Ummmm....my answer is Nantucket.....which shows you how much I know about
that.... :-)
--
Respectfully, Bob
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<snip>
> I'm not sure how the above ties in specifically to ABS pipe.
> All plastics, when burned, release PVC's, or polyvinylchlorides.
<Uhhm you getting off onto some odd and substantially wrong track>