Circulator Pump for boiler runs non-stop even with zones off.

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  #1  
Old 09-02-14, 03:02 PM
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Unhappy Circulator Pump for boiler runs non-stop even with zones off.

There are no zones calling for heat, yet the circulator pump for the boiler continues to run. I tried opening and closing the zone valves manually but get the same results. All the wiring for the zone valves are in place and no loose connections. I replaced the circulator pump but got the same result. Could I have a zone valve stuck in the open position and would that trigger the pump to activate. I'm thinking it could be the controller shorting out and keeping that circuit closed. The controller is a United Technologies 1013-10 Boiler Controller, would it be wise to replace the controller. Could anyone steer me in the right direction.
 
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  #2  
Old 09-02-14, 03:20 PM
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Take the zone heads off the body to make sure that none of the plungers are stuck down. That can cause the control to think that there's a call for heat. What kind of control is the circ wired to?
 
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Old 09-02-14, 03:54 PM
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First off, we really shouldn't be answering anything until we know:

What is the MAKE AND MODEL of the boiler? (my guess is Weil-McLain)

What is the MAKE AND MODEL of the zone valves?

Are the zone valves wired to a control panel of their own?


No, do not replace the UT control, that's for firing up your burners and such and you haven't said there's a problem with that part yet.

As dburr has asked, what control is the pump wired to?

Is there something inside the boiler that looks like this?



If so, my GUESS is that you need a new one of these:



http://www.supplyhouse.com/Weil-McLa...V-Holding-Coil
 
  #4  
Old 09-02-14, 04:09 PM
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What kind of zone valve uses a fan center? Most likely taco zone valves. The other thing is a contactor. Never seen one of those used on zone valves either...
 
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Old 09-02-14, 04:17 PM
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Dude, you ever work on Weil-McLain? MOST of them use the fan center control for the circ pump.

And the contactors have a tendency to weld themselves shut.

The other thing is a contactor.
Yes it is, and it plugs into that socket on the control in the picture.

You are ASSuming that it's a zone valve problem. I don't think it is...

You need to get out more.
 
  #6  
Old 09-02-14, 04:26 PM
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I work on this **** everyday. I have never seen a fan center or a contactor used on zone valves. I've seen a fan center used on a steam boiler but never on a water boiler. Zone valves either run off of a zone control relay or the aquastat. Since I'm going to assume this is an older system if he's having problems with the zone valves so I bet it's run of the Aquastat with a transformer. The problem is either with a zone head or the Aquastat.
 
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Old 09-02-14, 04:37 PM
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Trooper be nice please............
 
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Old 09-02-14, 04:38 PM
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Trooper be nice please............
I AM!

Who said it was used on zone valves?

It's INSIDE of MANY W-M boilers. Go do the research yourself and stop arguing.

Stop assuming it's a problem with the zone valves, because it probably is not.

He said the PUMP is running, NOT the burners. If it was a zone valve, the burners would be firing and bouncing off the high limit.

Wait for the OP to come back and answer the questions and we'll go from there.

In the meantime, download install manual for W-M series CG boilers. It's not the only one that uses the fan center, but it's one of them.

Or, just go to the webpage I posted for the contactor and read it. That contactor is used in all these W-M models

Weil McLain plug in relay with 24v holding coil, for boiler models:

CGA
CGx
CG
AHE
EG
EGH
HE
PFG
VHE
 
  #9  
Old 09-02-14, 04:51 PM
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OK you are right about the burner but I have never seen a Weil McLain with that stuff. To be fair he never said it was a Weil McLain. Sometimes you might want to leave it to the pros before you get mad. Google will only tell you so much.
 
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Old 09-02-14, 05:02 PM
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Sometimes you might want to leave it to the pros before you get mad.
Dburr9 we are the pros here on this site.. Most have been in the industry for some time..

Now we do not want to sway off topic... Lets refrain from reply's until the OP responds..

but I have never seen a Weil McLain with that stuff.
Many many years they have used these controls. If your not sure with your answer sometimes its best not to respond...
 
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Old 09-02-14, 05:06 PM
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Maybe that's the set up on gas? I do mostly oil so that could be the confusion. However the brand of boiler doesn't matter in regards to wiring most of the time. A Weil McLain is wired the same as a peerless and a Burnham. I do this for a living so I know what I'm talking about. In over 10 years I haven't seen that configuration.
 
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Old 09-02-14, 05:14 PM
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I do mostly oil so that could be the confusion.
Most likely... Maybe you could assist in the oil boiler area if you dont know gas boilers...

Im the opposite.. Gas guy and I dont touch oil..

Thank you for your understanding... And lets please stay on topic for the sake of the original poster..

Thanks.....
 
  #13  
Old 09-02-14, 05:46 PM
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To be fair he never said it was a Weil McLain
No, you're right... and I clearly said that I was GUESSING that it was a W-M, but that guess is an educated one based on experience. The fact that it has a UT ignition control, the symptoms, etc...

But yeah, let's quit for now and wait to see how it all pans out.
 
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