How old of a furnace is it Bob. Our gas job uses a ceramic thing, like a glow
plug. I do remember the old oil furnace use a spark gap. You could hear it
buzzzzit on startup. Sometimes the thing would buzzzzzit for a long time
before ignition, hi.
On 11, Dec 2013, at 16:36, Bob@N2SCJ.net wrote:
> I watched the Tech do his thing. Tech closed the spark gap on igniter a
> little. He used some sort of go no/go gauge to bend electrodes. Also he
> bent up the electrodes so that they would be more likely to make contact with
> igniter springs and therefore eliminate one set of arcing contacts. Tightened
> AC wire connections. It reduced the problem, but did not eliminate it.
> -----Original Message----- From: David Robbins
> Sent: Sunday, December 01, 2013 10:45 AM
> To: Bob@N2SCJ.net ; email@example.com
> Subject: RE: [RFI] Interference from Oil Burner Ignitor
> Tell them it is interfering with your AM radio reception... you can suspect
> that maybe a ground wasn't reconnected, or maybe a bolt isn't holding it
> tight to the case, or maybe a dirty connection, or even possibly a cut wire
> or a hv wire too close to some metal that is arcing. In any case it
> shouldn't interfere, especially to AM radio or an audio system.
> David Robbins K1TTT
> e-mail: mailto:firstname.lastname@example.org
> web: http://wiki.k1ttt.net
> AR-Cluster node: 145.69MHz or telnet://k1ttt.net
> -----Original Message-----
> From: RFI [mailto:email@example.com] On Behalf Of Bob@N2SCJ.net
> Sent: Sunday, December 01, 2013 14:27
> To: rfi
> Subject: [RFI] Interference from Oil Burner Ignitor
> I recently had the igniter fail on my oil burner. The replacement was an
> Allanson 2275-U as per the bill. The interference comes through over top of
> a station on the AM Broadcast band (KYW-1060). Its also getting into one of
> my FM rigs and/or my audio distribution system. I can figure out which one
> it is as soon as I can walk again (burst Baker's cyst). I can tell it’s the
> heater as I hear it start and at same time the tick, tick, tick, tick, sound
> comes over the AM radio. The noise lasts for about a minute and burner
> continues to fire. There is a logic circuit built into the heater that
> deactivates the igniter once circuit is sure the fire is burning. I believe
> that is why the noise stops before burner shuts down.
> The old igniter was RF quiet when it was working. Probably even quieter once
> it failed.
> This is a new install done on 11/27. I have not paid the bill yet, so I have
> some leverage with the service company. I think the igniter would be
> classified as an un-intentional radiator. Any thoughts on how to proceed?
> RFI mailing list
> RFI mailing list
RFI mailing list