UV-C Light

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snipped-for-privacy@gonefishin.net wrote:

Listen I am not going to try to convince you of anything. Believe what you want i have plenty of documentation to support the technology. As to the fan; the UV-C light is always on irradiating the coil killing the mold, when the system is turning on the the fan works with not blowing mold throughout the building. The yearly bulb replacements are far more cost effective than cleaning or replacing the coil. your wrong they do have a monetary savings.
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Jim - UV-C Light Purification
e-mail: snipped-for-privacy@uvclightpurification.com
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knowledge
Now you want us to believe the bulbs are going to act as air filters keeping the evaps clean? LOL
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kjpro @ usenet.com wrote:

I didn't say that of course you still need filters but the pathogens that we were talking about are too small and will not get trapped in the filter. Since you asked about filters I do have carbon bonded filters that will control VOC's and ordors. Plus the light is irradiating the coil to kill the mold plus the pathogens.
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Jim - UV-C Light Purification
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and
to
more
keeping
You you just want to talk about UV-C lights, but now you're offering "carbon bonded filters"?
LOL
Get lost you freaking moron!
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kjpro @ usenet.com wrote:

So glad I stopped by to talk. You guys are the best. Einstein, you said filters was just stating a response.
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Jim - UV-C Light Purification
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UV belongs in the return airstreams... Putting bulbs near the coil adds heat to your cool air & subjects bulbs to life shortening temp. swings when heating. But it does a great job of killing all those nasty bits & distributing them throughout the buildings duct system.
One of the 2nd Tier UV mfgrs/sellers has stopped promoting their line as Honeywell & Sanuvox have a lock... Further, their "we put it near the coil" schpeil lost lots of credit when they had to include statements like "cover all exposed plastics with aluminum foil"... How do plastics (and other common coil construction materials) handle direct UVC exposure? When the drainpans started to deteriorate "die" faster than the mold, it cost 'em some cash & credibility.. How about that vibration isolating "canvas" connector?
At least in the return duct, the exposed materials are primarily galvanized sheet metal, and what you kill will be collected in the filter, depending on filter eff & particle size of course...
goodluck geothermaljones st.paul,mn.
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geothermaljones wrote:

Th UV-C Light do not have any heat discharge they run cool, so heat is not a factor. The optimum distance from the coil is 12". And yes UV Light will eventually disintegrate plastics. This can be simply avoided by placing aluminum tape in any of those ares which would be few inside the plenum or air handling room. They are either 12" (if space permits) from the coil and on the downstream air, but can be put on the return but you want to kill anything prior to the air distribution.
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Jim - UV-C Light Purification
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simply avoided

YEAH, that's real convenient (use aluminum tape), NOT!!!!!!!
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kjpro @ usenet.com wrote:

I have a UV Sterilizer on my fish tank its made from pvc pipe and the uv light in the middle it would take 8-10 years for the UV to cause a problem with the plastic for an example. And like I said in most cases there is bx wiring and not much other plastics are inside a system.
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Jim - UV-C Light Purification
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Polymer materials suffer degradation when exposed to UV-C, I have some pics somewhere if you like.
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Yes Chris I would like to see the pics. Are you referring to filter that are made from polymer? If so you must use alternative filters if you are installing the UV between the pre filter and the coil filter. You might want to install the UV in the downstream air on the backside of the coil.
Thanks
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Jim - UV-C Light Purification
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We install the Sanuvox pretty regularly. IMHO it is the only one that is effective. I am not quite sure what the two UV spectrums do (UV-V & UV-C).
I just had to go to a call where one of my techs installed the Sanuvox where the filter could see it. IN less than three months it ate through a 3M pleated filter. I am having them go back and install it further into the crawl space, where the return starts.
I have been using Sanuvox for many, many years. Customers that have them love them, and have noticed a huge difference in their allergies and such while in their home. It may me mental it may be not, but they are happy!
Another down side to stick lights is there ozone creation, which seems to not be a problem with the Sanuvox.
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Bob Pietrangelo
snipped-for-privacy@comcast.net (home)
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Bob Pietrangelo wrote:

UV produces very little heat, they operate fairly cool. Well I am not so familiar with that brand (Sanuvox), but Honeywell has a pretty hefty price tag, and two bulbs (more expensive maintenance) are not really needed on a typical residential, light industrial unit, plus they are hard to install in systems that have limited space. And both brands have limited applications.I you place it on the return air (not as effective), you will only be treating that, you will continue to blow the microbials in on the downstream side. Your have to be careful when you install UV in in between the pre-filter and the filter, if that's where this unit was installed. There are alternative filters (carbon bonded filters, less expensive and more effective) to use if a unit were to be installed there. As to the ozone, not all brands produce (not the ones I have) it and it should be used with discretion. UV is non producing ozone in itself. It would have been better to be on the backside of the coil, on the downstream air. But I am not too sure what the target microbial was, it may have been installed between the filters for a reason.
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Jim - UV-C Light Purification
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Dear Home Enviro Health Specialists:
On Jun 11, 4:52 am, Home Enviro Health Specialists
...

If you have light of 215nm or shorter passing through oxygen- containing gas at less than 390 C, you make ozone. 215nm *is* UV. http://www.physlink.com/Education/AskExperts/ae300.cfm?CFID 241637&CFTOKEN`87837
Note also that only low pressure lamps are cool to the touch. Even so, the internal plasma temperature is quite high.
David A. Smith
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Correction: 241nm (which equates to the published 5.13eV necessary to dissociate O2).

http://www.physlink.com/Education/AskExperts/ae300.cfm?CFID 241637&CFTOKEN`87837
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dlzc wrote:

http://www.physlink.com/Education/AskExperts/ae300.cfm?CFID 241637&CFTOKEN`87837
Dave the bulbs are at the 254nm range, they are soft glass, and low mercury content. The lamps that I have do not produce ozone.
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Jim - UV-C Light Purification
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wrote:

get a clue. the internet is full of documentation, yea & nay on every topic on this planet.
the criteriia you obviously lack is 20+ years of hands on field experience.

If an ac is installed as per manu- instuctions and serviced on a regular basis, mold is never an issue.
I'll say this, it takes one hell of a stretch of the imagination to think that wasting energy has monetary savings.
its a sales gimmick designed to make a lot of contractors a lot of money, period. one poor sucker got stung bad, he's got two ac systems in his attic, each ac system has two bulbs in the ra, just upstream of the eac, another two downstream of the coil. 8 bulbs a year! yowza! then factor in a tiered rate structure pushing 26 cents /kwh
Somebody needs to get involved at the state or national level and mandate that all UV lighting must be cycled with the fan for energy conservation purposes.
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snipped-for-privacy@gonefishin.net wrote:

It would cost more money to clean the coil and would not be as effective. The unit would operate better with no restrictions on the coil 100% of the time verses only when the coil is cleaned (1 time every 6 mo. which is rare and more like 1 time a year maybe in residential people never do it). If you used uncloggers or power washed the coil you still would not penetrate deep into the coil. UV-C will reflect (aluminum is the best reflective source for UV) throughout the unit and in between the fins on the coil to clean everywhere.
There is no gimmick it work just as the sun does outdoors purifying our air. That does seem like a bit much to do the return air. But everything else (if the system was properly calculated and there obviously more than just mold was a concern) would be correct. Th bulbs all 8 of them would still be cheaper than most cleaning costs with the extended benefits all year long, not just at cleaning time.
The National level supports the use of UV. The efficiency improves on the HCAV system and you only operating light bulbs, which have very little energy draw. To cycle it with the fan might not be a bad idea.
--
Jim - UV-C Light Purification
e-mail: snipped-for-privacy@uvclightpurification.com
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Please tell me why we have to *clean* condenser coils. Afterall, the Sun's UV-C should be keeping them clean by your ideas.
Is there not smog in the air? I call your talk *bullshit* all the way around.
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