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air bubbles in furnace lxhop 03-27-2007
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Posted by on March 27, 2007, 7:20 am
I have an oil fed forced hot air heating system with the oil tank
outside under the porch . Since I moved in 13 years ago, I would get
air into the furnace and have to bleed it due to the heat shutting
off. This would happen only once every year and had no correlation to
the tank being filled, nor to the approximate level of oil in the tank
( it's a side-lying tank with no gauge). The problem continued even
when I replaced the furnace 8 years ago and the hvac repair man hasn't
found any loose connections inside.
Does anyone have any idea why this would happen with such regularity
and infrequency? Would a 2 line system help in this case? My major
concern is freezing pipes,etc if I were to go away for several days in
the winter.


Posted by Bubba on March 27, 2007, 7:44 am
On 27 Mar 2007 04:20:59 -0700, lxhop@yahoo.com wrote:

>I have an oil fed forced hot air heating system with the oil tank
>outside under the porch . Since I moved in 13 years ago, I would get
>air into the furnace and have to bleed it due to the heat shutting
>off. This would happen only once every year and had no correlation to
>the tank being filled, nor to the approximate level of oil in the tank
>( it's a side-lying tank with no gauge). The problem continued even
>when I replaced the furnace 8 years ago and the hvac repair man hasn't
>found any loose connections inside.
>Does anyone have any idea why this would happen with such regularity
>and infrequency? Would a 2 line system help in this case? My major
>concern is freezing pipes,etc if I were to go away for several days in
>the winter.

You replaced the furnace because of air in the line?
You should have replaced the thermostat.
Bubba

Posted by on March 27, 2007, 9:02 am
> On 27 Mar 2007 04:20:59 -0700, l...@yahoo.com wrote:
>
> >I have an oil fed forced hot air heating system with the oil tank
> >outside under the porch . Since I moved in 13 years ago, I would get
> >air into the furnace and have to bleed it due to the heat shutting
> >off. This would happen only once every year and had no correlation to
> >the tank being filled, nor to the approximate level of oil in the tank
> >( it's a side-lying tank with no gauge). The problem continued even
> >when I replaced the furnace 8 years ago and the hvac repair man hasn't
> >found any loose connections inside.
> >Does anyone have any idea why this would happen with such regularity
> >and infrequency? Would a 2 line system help in this case? My major
> >concern is freezing pipes,etc if I were to go away for several days in
> >the winter.
>
> You replaced the furnace because of air in the line?
> You should have replaced the thermostat.
> Bubba

I replaced the furnace due to it's age (?80 years). And what does the
thermostat have to do with air bubbles in the fuel line?


Posted by Bubba on March 27, 2007, 12:03 pm
On 27 Mar 2007 06:02:08 -0700, lxhop@yahoo.com wrote:

>> On 27 Mar 2007 04:20:59 -0700, l...@yahoo.com wrote:
>>
>> >I have an oil fed forced hot air heating system with the oil tank
>> >outside under the porch . Since I moved in 13 years ago, I would get
>> >air into the furnace and have to bleed it due to the heat shutting
>> >off. This would happen only once every year and had no correlation to
>> >the tank being filled, nor to the approximate level of oil in the tank
>> >( it's a side-lying tank with no gauge). The problem continued even
>> >when I replaced the furnace 8 years ago and the hvac repair man hasn't
>> >found any loose connections inside.
>> >Does anyone have any idea why this would happen with such regularity
>> >and infrequency? Would a 2 line system help in this case? My major
>> >concern is freezing pipes,etc if I were to go away for several days in
>> >the winter.
>>
>> You replaced the furnace because of air in the line?
>> You should have replaced the thermostat.
>> Bubba
>
>I replaced the furnace due to it's age (?80 years). And what does the
>thermostat have to do with air bubbles in the fuel line?

Because its the thermostat. Its almost always the thermostat.
You'll see.
Bubba

Posted by baymee on March 27, 2007, 3:46 pm
Thermostat has nothing to do with it. You have a vacuum leak in the
line somewhere.



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