Boiler Water Circulation Issue

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Old 12-04-11, 08:39 AM
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Boiler Water Circulation Issue

Hello,

I own a Weil-McLain CG5 SPDN Series 12 boiler. Is the water supose to continue to circulate when the temperature is gained and the furnace turns off? The water is constanly cycling. If it is suppose to turn off how do fix this problem? I hope this makes sense.
 
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Old 12-04-11, 09:34 AM
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Hi, welcome...

Some systems DO run with constant circulation.

Whether yours should or shouldn't depends on the controls and wiring...

Follow the wire coming from the circulator pump and tell us which control that goes to.
 
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Old 12-04-11, 09:44 AM
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Do you know if your system has 'zones' ? How many thermostats in the home?
 
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Old 12-04-11, 03:35 PM
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Weir_McLain Circulation Issue

Hello and thanks for the response. There are six zones. However, when all the thermostat are off the water continues to cycle.


Thanks again
 
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Old 12-04-11, 07:21 PM
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Follow the wire coming from the circulator pump and tell us which control that goes to.
Just don't go sticking your hands where there might be voltage.
 
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Old 12-05-11, 05:16 AM
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If these are zone valves which it sounds like it may be talking about six zones and A pump. Normally the pump should not run all the time as there is a possibility of dead heading the pump. Pictures of the piping might be required as there are some piping strategies that would use constant circulation.
 
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