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High Limit Thermostat

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  • 04-07-2006 7:30pm
    #1
    Hawthorn_Pl
    Registered Users Posts: 37 ✭


    Hi
    I am installing a new boiler that comes with a high limit thermostat. This cuts power to the boiler if the temperature exceeds 90 degrees. No wiring instructions came with the stat. I have included a picture of stat and I know that the white wire in the picture runs from the stat back to a control panel, however I am not to sure where exactly it is wired in. If anyone can shed some light on this I would be grateful.


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    #2
    phil me up
    Closed Accounts Posts: 14 ✭phil me up


    hi there
    you usually just use c which stands for common and then return your live feed true number 1
    it should be a normally closed switch but i have found that they sometimes get the numbers wrong
    hope this explains it to u if u need anymore info just ask


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    #3
    Hawthorn_Pl
    Registered Users Posts: 37 ✭Hawthorn_Pl


    Hi Phil
    Thanks for the reply. Do you know what the 2 is for? Thanks again and sorry for asking such a basic question I am just trying to figure out the setup and know what goes where.


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    #4
    towbar
    Registered Users Posts: 448 ✭✭towbar


    I would suspect one of the terminals is normally open the other normally closed. The c or common is live in. Whichever is normally closed would be to boiler or thermostat and the other would be to an external light maybe to indicate that the high limit has been reached.

    Again only suspect that hard to tell just from a picture.


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    #5
    phil me up
    Closed Accounts Posts: 14 ✭phil me up


    hi ya horthorn

    dont worry about the no 2 connetion just think of ur stat as a switch with c bein ye common connection and no 1 and no2 bein ur when u connect ur cables into the common and number 1 power will flow trought because its a closed switch

    hope this helps let me know if i can answer any other of ur questions and let me know did it work out for u ]

    cheers


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