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OT - Need Help ASAP with oil fired furnace - 10F outside
Posted by: OttawaCorvairGuy ()
Date: January 10, 2019 07:10PM

ANYONE out there with furnace knowledge?

We have an oil fired furnace with hot-water baseboard heat.

While watching TV tonight we noticed the furnace is not running as long as it normally does.
It is also kicking on and off more.

IT is HOWEVER, still cycling the water after the burner turns off.
But where the burner use to run 15 to 20 minutes - it is running about a minute or two and then shutting off.

NOTE: But the pipes near the registers throughout the house are very hot.
However the large living room is normally 69f and it sticking around 67f...

I have no clue if the pressure is getting to high or what is the problem.

With temps dropping over night - I don't want to lose our heat.

THANKS

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Re: OT - Need Help ASAP with oil fired furnace - 10F outside
Posted by: jjohnsonjo ()
Date: January 10, 2019 07:14PM

What's the water temp going to at the furnace?

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa

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Re: OT - Need Help ASAP with oil fired furnace - 10F outside
Posted by: 63vert ()
Date: January 10, 2019 07:16PM

Sounds like the water cycling pump is not actually moving the water. If the baseboards closest to the furnace are very hot, the furnace is probably hitting the high temp limit, and shutting off.
When I had baseboard hot water heat, I kept an extra circulation pump, an aqua stat, and an extra electronics board.

Rockingham, NC

1962 Greenbrier
65 110 4speed



Edited 1 time(s). Last edit at 01/10/2019 07:25PM by 63vert.

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Re: OT - Need Help ASAP with oil fired furnace - 10F outside
Posted by: OttawaCorvairGuy ()
Date: January 10, 2019 07:29PM

jjohnsonjo Wrote:
-------------------------------------------------------
> What's the water temp going to at the furnace?


Not sure what you are trying to say.


What is the tmep of the water going to the furnace or going from the furnace trough the baseboard heating system?



Edited 1 time(s). Last edit at 01/10/2019 07:35PM by OttawaCorvairGuy.

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Re: OT - Need Help ASAP with oil fired furnace - 10F outside
Posted by: OttawaCorvairGuy ()
Date: January 10, 2019 07:34PM

63vert Wrote:
-------------------------------------------------------
> Sounds like the water cycling pump is not actually
> moving the water. If the baseboards closest to
> the furnace are very hot, the furnace is probably
> hitting the high temp limit, and shutting off.
> When I had baseboard hot water heat, I kept an
> extra circulation pump, an aqua stat, and an extra
> electronics board.


I'm thankful for you trying to help.
The fifth line in my first post I stated that the pump is STILL cycling water after the burner shuts down...

As for how hot the pipes feel.
They are about the same throughout the house - which I also stated in my first post...

Hoping we making it overnight...
Tomorrow - I will get my laser temp gun and put new batteries in it.
That way I will have an exact reading throughout the system...

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Re: OT - Need Help ASAP with oil fired furnace - 10F outside
Posted by: 63vert ()
Date: January 10, 2019 07:41PM

OttawaCorvairGuy Wrote:
-------------------------------------------------------
> 63vert Wrote:
> --------------------------------------------------
> -----
> > Sounds like the water cycling pump is not
> actually
> > moving the water. If the baseboards closest to
> > the furnace are very hot, the furnace is
> probably
> > hitting the high temp limit, and shutting off.
> > When I had baseboard hot water heat, I kept an
> > extra circulation pump, an aqua stat, and an
> extra
> > electronics board.
>
>
> I'm thankful for you trying to help.
> The fifth line in my first post I stated that the
> pump is STILL cycling water after the burner shuts
> down...
>
> As for how hot the pipes feel.
> They are about the same throughout the house -
> which I also stated in my first post...
>
My thought was that maybe the circulation pump is making noise, but not actually moving the water.

Rockingham, NC

1962 Greenbrier
65 110 4speed

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Re: OT - Need Help ASAP with oil fired furnace - 10F outside
Posted by: OttawaCorvairGuy ()
Date: January 10, 2019 07:58PM

UPADTE or TEST:

At 8:32pm I flipped the main switch (used to service the furnace) off.

We left the furnace OFF until 10:27.15pm.

At 10:27.15PM I flipped the furnace back ON and it ran until 10:44.25pm before the burner turned off.
The PUMP was still cycling the water through the system from 10:44.25 until 10:53.05 when the furnace turned back on.

Boiler temps were 210f when furnace turned off at 10:44.25 and 170f when furnace turned back on at 10:53.05

The short cycle - Might be a freak thing or intermittent.



Edited 2 time(s). Last edit at 01/10/2019 08:03PM by OttawaCorvairGuy.

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Re: OT - Need Help ASAP with oil fired furnace - 10F outside
Posted by: MattNall ()
Date: January 10, 2019 08:04PM

or the electronics board just needed re-booting.....





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Re: OT - Need Help ASAP with oil fired furnace - 10F outside
Posted by: OttawaCorvairGuy ()
Date: January 10, 2019 08:06PM

Living room temp was 67f when I turned furnace off and dropped to 65f by the time I turned the furnace back on.

It is now 66f - But it take a little while for a room to heat up with baseboard heat.

Lord willing - the short cycle we experienced might not be a problem.

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Re: OT - Need Help ASAP with oil fired furnace - 10F outside
Posted by: OttawaCorvairGuy ()
Date: January 10, 2019 08:07PM

MattNall Wrote:
-------------------------------------------------------
> or the electronics board just needed
> re-booting.....


I'm not sure it has one - with an old system like this...

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Re: OT - Need Help ASAP with oil fired furnace - 10F outside
Posted by: OttawaCorvairGuy ()
Date: January 10, 2019 08:09PM

Thanks everyone!

With outside temps dropping overnight I was concerned of losing heat.

Plus a cold wife is not a happy wife. Grin

FYI - Furnace kicked back on again at 11:08pm with living room temp now 67f..

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Re: OT - Need Help ASAP with oil fired furnace - 10F outside
Posted by: vairsUPnorth ()
Date: January 10, 2019 08:44PM

What you have is a boiler and hot water circulation system, not a furnace [for heating air].

The symptoms you describe suggest that somehow air got into the water circulation system, which can allow the pump to run but not effectively circulate the water [and heat] through the system due to loss of prime. The boiler then short cycled due to overheating, with the limit switch doing exactly what it is supposed to do.

Make sure to check the automatic vent valve, which is designed to separate and vent off any air that gets into the system. Sometimes this problem crops up when there is a minor or slow leak somewhere; often undetected except for telltale lime build up because the heat evaporates the water as it seeps out. The make-up water system then adds DCW to the system with dissolved air, which comes out of solution and may accumulate if the vent is not working [maybe also limed up].

[corvaircenter.com]

Dale Dewald
Hancock, MI

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Re: OT - Need Help ASAP with oil fired furnace - 10F outside
Posted by: Frank DuVal ()
Date: January 10, 2019 09:01PM

Just like car terminology gets skewed, around here everyone calls home boilers furnaces too. Boilers are those big 100 horsepower things in industry!grinning smiley

Frank DuVal

Fredericksburg, VA

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Re: OT - Need Help ASAP with oil fired furnace - 10F outside
Posted by: OttawaCorvairGuy ()
Date: January 10, 2019 09:10PM

vairsUPnorth Wrote:
-------------------------------------------------------
> What you have is a boiler and hot water
> circulation system, not a furnace .
>
> The symptoms you describe suggest that somehow air
> got into the water circulation system, which can
> allow the pump to run but not effectively
> circulate the water through the system due to
> loss of prime. The boiler then short cycled due
> to overheating, with the limit switch doing
> exactly what it is supposed to do.
>
> Make sure to check the automatic vent valve, which
> is designed to separate and vent off any air that
> gets into the system. Sometimes this problem
> crops up when there is a minor or slow leak
> somewhere; often undetected except for telltale
> lime build up because the heat evaporates the
> water as it seeps out. The make-up water system
> then adds DCW to the system with dissolved air,
> which comes out of solution and may accumulate if
> the vent is not working .


Dale, Thank you...

Last summer I added 2 entire house water filters.

I have noticed that when I change them - there seems to be a lot of air in the entire water system.
This ENCLUDES the hot-water boiler and baseboard heating system...
I've changed the filters the first week of January and my guess is that the heating system now has more air in the lines.





Edited 1 time(s). Last edit at 01/10/2019 09:14PM by OttawaCorvairGuy.

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Re: OT - Need Help ASAP with oil fired furnace - 10F outside
Posted by: OttawaCorvairGuy ()
Date: January 10, 2019 09:15PM

NOTE: The rear house water filter above is mounted just left of the water line that feeds our hot-water furnace or boiler.

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Re: OT - Need Help ASAP with oil fired furnace - 10F outside
Posted by: jjohnsonjo ()
Date: January 11, 2019 05:59AM

[inspectapedia.com]



read this stuff

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa

Image and video hosting by TinyPic

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Re: OT - Need Help ASAP with oil fired furnace - 10F outside
Posted by: OttawaCorvairGuy ()
Date: January 11, 2019 07:14AM

jjohnsonjo Wrote:
-------------------------------------------------------
> [inspectapedia.com]
>
>
>
> read this stuff


I will. I just woke up from a bad night.. Only half way through my first C[_] of tea this morning... Grin

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Re: OT - Need Help ASAP with oil fired furnace - 10F outside
Posted by: OttawaCorvairGuy ()
Date: January 11, 2019 07:38AM

Once winter is over I plan to install a one-way valve at the beginning of the water supply for the boiler or furnace, as shown in the picture below.

FYI - The water filter system is less than a year old and I replaced the filter a the beginning of January and this might be where the system is getting the air from.

Adding the one-way valve should help to keep the air from getting into the system when I go to change out that filter seen on the left.



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Re: OT - Need Help ASAP with oil fired furnace - 10F outside
Posted by: curt ()
Date: January 11, 2019 07:48AM

I suggest air in the line or low water.I'm not a furnace man. Call the furnaace repair and evaluate what you can. LUCK TO YOU .

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Re: OT - Need Help ASAP with oil fired furnace - 10F outside
Posted by: OttawaCorvairGuy ()
Date: January 11, 2019 07:53AM

For most of today I will be purging a little amount of air out of system at different places in the system each time the furnace turns on.
I had to do this when we first got the place.
My thought now is that the new water filters are causing this again.
A lot of air gets into the pipes when I have to change the filter.

It is 2f or -18c outside right now...
The reason why it will take so long is due to the time of year it is and that we don't want to be without heat.
It is NOT good to shock the system with too much cold water entering it when the system and pipes are so hot.
I heard that it could cause damage to the boiler itself.
So baby steps all the way. ggg


Thank you everyone for your help.



Edited 2 time(s). Last edit at 01/11/2019 07:57AM by OttawaCorvairGuy.

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