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Burnham MPO boiler - strange temperature behavior

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Burnham MPO boiler - strange temperature behavior anthonymmfalcone 10-17-2007
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Posted by on October 17, 2007, 12:16 am
Dear Readers,
My Burnham MPO boiler was installed in August. I've an indirect water
heater attached as well. The domestic hot water works fine and heats
up on demand as expected. Now that heating season has begun, I find
hydronic system with very very weak heat output. The new circulator
is running fine. The manual says there is a 15degree differential
between the "high limit setting" and a call for boiler ignition. I
see the high limit is set at 200F. I raise the thermostat to call for
heat, but I watch the boiler thermometer go down to under 90deg F and
never come on. The only way it does come on is if I run the hot water
too.

Any ideas or suggestions on what is wrong would be appreciated.

Regards,
Anthony Falcone


Posted by Tony Hwang on October 17, 2007, 12:32 am
anthonymmfalcone@yahoo.com wrote:

> Dear Readers,
> My Burnham MPO boiler was installed in August. I've an indirect water
> heater attached as well. The domestic hot water works fine and heats
> up on demand as expected. Now that heating season has begun, I find
> hydronic system with very very weak heat output. The new circulator
> is running fine. The manual says there is a 15degree differential
> between the "high limit setting" and a call for boiler ignition. I
> see the high limit is set at 200F. I raise the thermostat to call for
> heat, but I watch the boiler thermometer go down to under 90deg F and
> never come on. The only way it does come on is if I run the hot water
> too.
>
> Any ideas or suggestions on what is wrong would be appreciated.
>
> Regards,
> Anthony Falcone
>
Hi,
Air in the system?

Posted by on October 17, 2007, 5:44 am
> Air in the system?- Hide quoted text -

I bled everything more than once. Don't think that's the case as I
hear the circulator running smoothly with water.


Posted by on October 17, 2007, 5:58 am
Call nother dealr for warranty service


On Oct 17, 5:44 am, anthonymmfalc...@yahoo.com wrote:
> > Air in the system?- Hide quoted text -
>
> I bled everything more than once. Don't think that's the case as I
> hear the circulator running smoothly with water.



Posted by on October 17, 2007, 12:39 am

> Dear Readers,
> My Burnham MPO boiler was installed in August. I've an indirect water
> heater attached as well. The domestic hot water works fine and heats
> up on demand as expected. Now that heating season has begun, I find
> hydronic system with very very weak heat output. The new circulator
> is running fine. The manual says there is a 15degree differential
> between the "high limit setting" and a call for boiler ignition. I
> see the high limit is set at 200F. I raise the thermostat to call for
> heat, but I watch the boiler thermometer go down to under 90deg F and
> never come on. The only way it does come on is if I run the hot water
> too.
>
> Any ideas or suggestions on what is wrong would be appreciated.
>
> Regards,
> Anthony Falcone


What's the installing dealer have to say?



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