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Posted by Bob_Loblaw on March 27, 2007, 10:20 am
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!
--
Respectfully, Bob
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Posted by New Directions In Building Ser on March 27, 2007, 6:49 pm
> 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!
>
> --
> Respectfully, Bob
Nice to see Canada catching up with what they should have known from day
dot.....
I seem to remember hearing about how stupid this was from my visiting
(Canadian) Professor at Sydney University at a post grad on IAQ in 1992.
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Posted by Bob_Loblaw on March 27, 2007, 9:43 pm
"New Directions In Building Services \(Australia\)"
> Nice to see Canada catching up with what they should have known from
> day dot.....
> I seem to remember hearing about how stupid this was from my visiting
> (Canadian) Professor at Sydney University at a post grad on IAQ in
> 1992.
And what exactly were the reasons for it being a stupid idea back in 1992?
Are you saying Australia hasn't used PVC for venting since then?
--
Respectfully, Bob
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Posted by New Directions In Building Ser on April 1, 2007, 5:12 am
> And what exactly were the reasons for it being a stupid idea back in 1992?
> Are you saying Australia hasn't used PVC for venting since then?
>
> --
> Respectfully, Bob
Bob - if you remember it was ABS (CYCOLAC ACRYLONITRILE-BUTADIENE-STYRENE
TERPOLYMER) which I was commenting on as being unacceptable for hot flue
effluent venting. Such usage as you've been putting this ABS to has been,
stupid as you say. Melting Point: 218-262F/103~128C, these materials do not
exhibit a sharp melting point but soften gradually over a wide temperature
range.
So this material that melts at just above the boiling point of water - is
what you've been using as a flue for the discharge of boiler units - duhh!
Grinder dust is an explosion hazard.
Fire Hazard Information: Hazards from burning are intense heat and very high
levels of dense black smoke containing carbon monoxide, carbon dioxide, and
hydrogen cyanide. Fire-fighters should be provided the necessary protective
clothing and use a self-contained breathing apparatus approved by NIOSH or
MSHA for all fires.
Hazardous Decomposition Products: Styrene monomer, ammonia, hydrogen
cyanide, acrylamide, aromatic and aliphatic hydrocarbon fractions, and
carbon monoxide may be present. Primary toxic product on combustion is
carbon monoxide. Carbon dioxide, an asphyxiate, is also produced.
is this sufficcient information to validate the concerns with using these
products or should we go on.....
Regards,
Ian
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Posted by Bob_Loblaw on April 1, 2007, 7:50 pm
"New Directions In Building Services \(Australia\)"
> Grinder dust is an explosion hazard.
>
> Fire Hazard Information: Hazards from burning are intense heat and
> very high levels of dense black smoke containing carbon monoxide,
> carbon dioxide, and hydrogen cyanide. Fire-fighters should be provided
> the necessary protective clothing and use a self-contained breathing
> apparatus approved by NIOSH or MSHA for all fires.
>
> Hazardous Decomposition Products: Styrene monomer, ammonia, hydrogen
> cyanide, acrylamide, aromatic and aliphatic hydrocarbon fractions, and
> carbon monoxide may be present. Primary toxic product on combustion is
> carbon monoxide. Carbon dioxide, an asphyxiate, is also produced.
>
> is this sufficcient information to validate the concerns with using
> these products or should we go on.....
>
> Regards,
> Ian
I'm not sure how the above ties in specifically to ABS pipe.
All plastics, when burned, release PVC's, or polyvinylchlorides.
Or, as we in the field call the products of combustion,
methyl-ethyl-bad-shit.
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
ninety's
--
Respectfully, Bob
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