On Sun, 06 Aug 2006 05:03:34 GMT, "Pete C."
wrote:

zero wrote:


Oil burners do *not* have blowbacks on their own, they have had the
safety devices to prevent that for decades.

You don't know what you are talking about.

Blowbacks occur when someone
keeps pressing the reset button ignoring the warning not to press it
more than once. Oil burner controls from the last couple decades have
incorporated a "three strikes and you're out" lockout to prevent this.

For the last couple of decades THIS is what came on a domestic oil
burners;
http://customer.honeywell.com/techli...0s/69-0618.pdf

and before that, it was THIS;
http://www.partsguy.com/cgi-bin/Part...A117A1047.html

As soon as you purge yourself of the "three strike/ decades" sales
blurb, only then can you move forward.

Ok, that's not the case. You can reset ANY oil flame safeguard
relay control as many times as you like.


One of many examples:

Many examples? I know you are greenhorn, thats OK, however now your a
greenhorn know-it-all. This will be my last post responding to you.

http://www.carlincombustion.com/products/50200.htm

"Serviceman Reset Protection ( Latch-up after three consecutive
lockouts)"

Yes, this is one of the better controls NOW available. I referred to
this below.*


The nucleus of gas vs. oil residential heating safety lies in the
control methodology of the times.

Oil burners are direct fired. The full fuel output is ignited by a
strong arc. There is no pilot light. If it does not ignite, there is
approximately 10 seconds worth of atomized oil spray
inside of the combustion chamber. Flame detection is performed by a
Cad Cell.

Right, but what does that have to do with the three strike lockout?

Read it again slowly and carefully starting from; "The nucleus of
gas...."


Until recently, most all gas furnaces used a small pilot light to
achieve combustion, which in turn ignites the main burners. More of
today's furnaces are direct light off such as the oil burner, however
modern flame safeguards strategies are applied to bring an acceptable
level of safety to the gas burner.

If you're indicating that gas burners until very recently have had very
minimal controls with limited safeties you are correct. Many had no
electronics at all and relied on a thermocouple heated by the pilot as
the only safety for pilot loss. Most had no detection if the main burner
actually lit off properly. Most had no easily accessible emergency off
switch, you had to find the gas valve, etc.

Read it again slowly and carefully starting from; "Until recently,
most all gas furnaces..."

There is less risk involved in lighting off main gas fuel with a
supervised established ignition (a pilot), then there is lighting off
main oil fuel with a spark , unsupervised. This is probably beyond
you. Never mind.



* There are better controls available for domestic oil burners
however they have not found their way into the residential product
lines.

Huh? Those features are on nearly every residential oil burner
manufactured in the last decade. They are certainly on the oil burner I
had installed this spring.

Yes, you're new to this. So are the Carlin programmed controls.


Proportionally, there are many more instances of delayed ignition in
oil, then fuel gas.

For pilot units probably.

There are no pilots on little oil burners Read it again..

And for delayed ignition on an oil burner
rarely anything of consequence without human intervention overriding the
safety.

You don't know what you are talking about regarding oil
burners/combustion and safety. All you know is what you installed this
spring. There's more to learn. Good luck.


-zero

Pete C.