Are you guys in the States getting a change to the vent code re: plastic
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!
Nice to see Canada catching up with what they should have known from day
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.
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
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.....
"New Directions In Building Services \\(Australia\\)"
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,
But there is a need to switch to a more temperature-resislient venting
I was just surprised to hear you say that you've known this since the early
<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.
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
ABS...still best to just use it as a sewer pipe.
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.
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
Must calculate in for more CFM exchange for broccoli and legume eaters. Also
for Mexican food.
Methane is explosive twice. Once on spewing and twice in the presence of a
some guy was killed when he ate too many potato pancakes on Passover and he
was too close to the Menorah with candles. :-)
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