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i Radiant valve from Taco - questions

Weezbo
Weezbo Member Posts: 6,232
(Boiler protection activated)the first one would be to activate the valve full open with the power shut off then watch what it does ...then close it and turn the power back on and see what it does. then turn the power off again andthe t stat down turn the power back on and then see if it resets and is working with the green light on again.

so an enswer would be to turn off the 1 and 2 dip switches and turn the power back on after all that if it didnt go and it would allow 10% flow that wont cure any thing ie the sensor buh at least they will have heat... i think all zone valves no matter what kind need to be exercised just before the heating season...consider all that exercising turn the power back off put the dip switch one back to off and the 2 back to on and check it one more time.Hope it was just being onery after sitting idle all summer. best of the day to you.

Comments

  • ScottMP
    ScottMP Member Posts: 5,884
    We installed one

    this summer and we keep getting a flashing green light and a call from the HO that the floor is not warm.

    I have set up the control and checked the location of the sensers and all seems to be correct. My big concern is when I manueal turn the valve on top I get flow and the temp goes up to 150/160 going out to the floor. My curve is set at 1.2

    Any one have any ideas ??

    Scott

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  • John Jr
    John Jr Member Posts: 210
    Directions?

    Scott, I know this is a stupid question for you but did you read the directions for the Valve that came with it? It explains the blinking lights. It also explains the dip switch's on the side. If no luck give Taco a call they stand behind their product.

    John Jr.
  • Weezbo
    Weezbo Member Posts: 6,232
    *~/:)

    the R series with reset acts somewhat like a pump block would using sort of a constant tweaking of the valve to maintain temp. the green flashing light means at least it is getting the message to go.i am home for a few mins. i will get the cut sheet. it has various flashing tempos as i re call mostly i have been using the set point control for partial differential set back. i will go look. BRB



    Ok Here it is ,found the paperwork! I'm Bad :)
    (Green slow flash- WWSD )(fast flash=Reduced output). solid (green=power on). (red flash pause = sensor fault will continue to operate at 10 % if maximum supply dip switches are off).( red flash flash pause =boiler sensor fault)it ignores boiler protection function.Red Flash flash flash pause= outdoor sensor fault the valve assumes out door temp is 32. if the outside temp is cold and the inside temp is cold increase the reset ratio one click per day.
  • ScottMP
    ScottMP Member Posts: 5,884
    Thanks Weezy

    I have checked all the instructions and am aware that its in a reduced output mode. I think my problem is that this is on an ald boiler and the return sensor is seeing To Much cold return water from other zones. There-by putting it in reduced output mode and giving the inpression my customer is getting no heat.

    I had a good talk with Ken Fagen from Emerson Swan and I think we've got it worked out.

    Scott

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  • Weezbo
    Weezbo Member Posts: 6,232
    tell us your solution.

    is this happening on full reset or differential reset? i wonder ,if a person had a condensing boiler tied into a header for the shoulder seasons,hmmmm.....always something new *~/:)
  • Joe Mattiello
    Joe Mattiello Member Posts: 703
    I valve Reset, and setpoint type

    Good morning
    You didn’t mention if you have a setpoint or reset type valve. You did mention the 1.2 reset ratio so I assume you have the reset type. If you have slow flash warm weather shut down is activated, simply turn dip switch 4 off to remedy the problem. If it’s a fast green light flashing, th e valve is trying to do boiler protection. You will still get heat, but reduced output because the valve is holding off flow to the radiant zone to protect the boiler. You can try taking the sensor off and powering up the valve without a boiler return sensor. If you still experience problems you can call me, or any of the technicians here at Taco.

    For your reference I attached the instruction sheet.

    Taco, Inc.
    Joe Mattiello
    Technical Service Technician
    [email protected]
    401-942-8000 X 484
    www.taco-hvac.com
    Joe Mattiello
    N. E. Regional Manger, Commercial Products
    Taco Comfort Solutions
  • Joe Mattiello
    Joe Mattiello Member Posts: 703


    Good morning
    You didn’t mention if you have a setpoint or reset type valve. You did mention the 1.2 reset ratio so I assume you have the reset type. If you have slow flash warm weather shut down is activated, simply turn dip switch 4 off to remedy the problem. If it’s a fast green light flashing, th e valve is trying to do boiler protection. You will still get heat, but reduced output because the valve is holding off flow to the radiant zone to protect the boiler. You can try taking the sensor off and powering up the valve without a boiler return sensor. If you still experience problems you can call me, or any of the technicians here at Taco.


    Taco, Inc.
    Joe Mattiello
    Technical Service Technician
    [email protected]
    401-942-8000 X 484
    www.taco-hvac.com
    Joe Mattiello
    N. E. Regional Manger, Commercial Products
    Taco Comfort Solutions
  • Joe Mattiello
    Joe Mattiello Member Posts: 703


    Good morning
    You didn’t mention if you have a setpoint or reset type valve. You did mention the 1.2 reset ratio so I assume you have the reset type. If you have slow flash warm weather shut down is activated, simply turn dip switch 4 off to remedy the problem. If it’s a fast green light flashing, th e valve is trying to do boiler protection. You will still get heat, but reduced output because the valve is holding off flow to the radiant zone to protect the boiler. You can try taking the sensor off and powering up the valve without a boiler return sensor. If you still experience problems you can call me, or any of the technicians here at Taco.


    Taco, Inc.
    Joe Mattiello
    Technical Service Technician
    [email protected]
    401-942-8000 X 484
    www.taco-hvac.com
    Joe Mattiello
    N. E. Regional Manger, Commercial Products
    Taco Comfort Solutions
  • ScottMP
    ScottMP Member Posts: 5,884
    Joe

    I did wind up removing the boiler return sensor and its all working fine now. The sensor was located at the return manifold to the boiler and I was getting a quick flashing green light.

    If non of the other zones where calling I was probable not getting enough flow to the boiler to get a 'warm" reading. I was not getting ANY flow ?? I would assume that as the return warmed it would go out of reduced flow but it was not and I was getting nothing to the floor ?

    I have been happy with the valve on other jobs but maybe on large multi zones jobs the boiler return sensor should be left off ??

    Scott

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  • Ted_9
    Ted_9 Member Posts: 1,718
    heating

    Scott, do you install the boiler protection sensor on the main boiler return or the return on the 3 way going to the main return?

    I've often thought about using this valve.

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  • ScottMP
    ScottMP Member Posts: 5,884
    According to

    the directions it is to be located on the Boiler return. I am not sure its a great application in older systems.

    All and All we have been very happy with this control. Its a nice fit for smaller compeditive systems.

    Scott

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