[RFI] Blower noise from Carrier Furnace

[Dave Cole]

That is why the additional clause "that the new device won't generate
RFI", was added...  That gets around 15.103(d).
-- 
73's, and thanks,
Dave

For software/hardware reviews see:
http://www.nk7z.net

For MixW support see:
https://groups.yahoo.com/neo/groups/mixw/info

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http://groups.yahoo.com/neo/groups/MM-SSTV/info



On Thu, 2016-01-28 at 08:50 -0800, Hisashi T Fujinaka wrote:
> I'm not a lawyer, but part 15.103(d) appears to exempt furnaces.
> 
> On Thu, 28 Jan 2016, Dave Cole wrote:
> 
> > If possible, when you replace your HVAC system, have the company
> doing
> > the install write into the contract both you and they sign, that
> the
> > new device will not generate RFI, and will be FCC part 15
> compliant,
> > else it goes back, and the old system gets put back in place at no
> > charge to you. 
> >
> > That forces them to do the homework and call the manufacturer. 
> This
> > also puts the RFI issue right out on the table to start with, and
> > brings up the issue of RFI to the manufacturer.  This also lets the
> > manufacturer know that RFI is an issue , and can cost them sales. 
> >
> > When I changed furnaces I did this...  I also had no issues with
> RFI
> > when the install was finished.  I asked the installers, to please
> do
> > their homework and call the vendor to insure there would not be an
> RFI
> > issue, prior to install in order to avoid ugly issues later. 
> >
> > All went well, and they installed an RFI kit on a Coleman furnace
> at
> > the time of install...  Not a peep from it. 
> >
> > I also elected to avoid the PW controlled fan as well... 
> >
> > All discussion were very nice, and very friendly, but in no
> uncertain
> > terms, no RFI would be tolerated, it would be a show-stopper.
> >
> > -- 
> > 73's, and thanks,
> > Dave
> >
> > For software/hardware reviews see:
> > http://www.nk7z.net
> >
> > For MixW support see:
> > https://groups.yahoo.com/neo/groups/mixw/info
> >
> > For SSTV help see:
> > http://groups.yahoo.com/neo/groups/MM-SSTV/info
> >
> >
> >
> > On Thu, 2016-01-28 at 07:41 -0800, Gary Smith via RFI wrote:
> >> Thanks for this very valuable info. Our hvac system is near
> >> replacement 
> >> time, good to know that Trane corp knows (and apparently,
> >> understands) 
> >> about and can do something about RFI from their hvac system.
> >> 
> >> Gary...wa6fgi
> >> 
> >> 
> >> 
> >> On 1/27/2016 7:41 PM, Tim Duffy wrote:
> >> > Hello Jim:
> >> > 
> >> > I had a new HVAC system installed last year - It is the American
> >> > Standard
> >> > brand. I had bad RFI on 20 meters.
> >> > 
> >> > I found this document:
> >> > 
> >> > http://www.crompton.com/hamradio/Trane%20XV95%20RFI%20Documentat
> ion
> >> > .pdf
> >> > 
> >> > It gave me all the info I needed to give to the HVAC installers
> to
> >> > fix my
> >> > RFI. Now my HVAC system is RFI noise free.
> >> > 
> >> > Hope this document (lots of links) or something else you can
> Google
> >> > will
> >> > help you solve your problem.
> >> > 
> >> > 73,
> >> > Tim K3LR
> >> > 
> >> > -----Original Message-----
> >> > From: RFI [mailto:rfi-bounces at contesting.com] On Behalf Of Jim
> >> > Netwal via
> >> > RFI
> >> > Sent: Wednesday, January 27, 2016 2:55 PM
> >> > To: rfi at contesting.com
> >> > Subject: [RFI] Blower noise from Carrier Furnace
> >> > 
> >> > Last August I replaced my dead furnace with a new Carrier Model
> >> > 59TP6A060
> >> > variable speed, 2-stage furnace.  Right away I noticed that I
> had
> >> > loud
> >> > blower motor noise ever 18 kHz on most bands but it was the
> loudest
> >> > on 17
> >> > meters.  Does anyone have any advice or a fix for this?  Thank
> you
> >> > in
> >> > advance!
> >> > 
> >> > 73, Jim W9UUM
> >> > www.w9uum.com
> >> > _______________________________________________
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> >> > RFI at contesting.com
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> >> > 
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> >> 
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> 
> -- 
> Hisashi T Fujinaka - htodd at twofifty.com
> BSEE + BSChem + BAEnglish + MSCS + $2.50 = coffee