Mel,
I have a Trane (installed 2 years ago) and have had some RFI problems
with it. I haven't been active for awhile so I don't remember which bands were
affected the most. However, I complained to the installer and the manufacturer
provided a filter which he installed. I think it was connected to the box that
controls the combustion air blower (or whatever it is called). It mitigated the
noise somewhat, but not completely. I was planning on adding some ferrite
myself, but haven't gotten around to it. If you need more information on this
furnace and the filter, I can dig it out for you.
Dan Kf4kkf
"Let every man be quick to hear, slow to speak, slow to wrath..."
-----Original Message-----
From: rfi-bounces@contesting.com [mailto:rfi-bounces@contesting.com] On Behalf
Of Mel Crichton
Sent: Wednesday, October 27, 2010 12:42 PM
To: rfi@contesting.com
Subject: [RFI] RFI from new Hi-efficiency furnace?
Looking to replace old furnace with new 95% efficient unit. (Air conditioning
won't be changed out as it works fine and no RFI)
I plan to stay away fom variable speed drive on the primary fan to avoid
traditional RFI from VSD untits, but most all units have ECM (electronic
control module) on the smaller combustion air blower. Some even have DC motors.
Any experience (good or bad) with these high efficiency furnace units? (RFI in
or out?) Looking at Carrier and brands made by Carrier (Kenmore, Bryant)
Mel KJ9C
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