Problem with heatmaker boiler

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Old 10-11-08, 05:54 AM
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Problem with heatmaker boiler

I have an older heatmaker Mark II boiler that has been working great all these years.
Now on firing it up, the water temp won't go over 170 degrees and the boiler won't cut out and stays constantly running.
I believe its supposed to go to 210 degrees before it cuts out.
Any ideas?
 
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Old 10-11-08, 06:09 AM
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210

It is a rare instance where you need 210 water to heat the house. In fact, even 170 is often more than is needed. If the thermostat is calling for heat, the boiler is going to run a while.
 
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Old 10-11-08, 07:00 AM
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210 degrees

Yes its calling for heat but this boiler always gets up to the cutout temp quickly and then hot water pumps till the temp goes down and then it fires up again. It won't get over 170
and its not cold out yet.
 
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