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    Furnace_Man's Avatar
    Furnace_Man Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Nov 10, 2011, 06:37 PM
    Jumper wire at furnace to bypass thermostat...
    Hi, I am wondering if anyone has an easy step by step process that I can follow to jumper my thermostat at the furnace. If I do not have access to the thermostat (upstairs and the landlord isn't home, but I am working in the tenants apartment in the basement) and I want to check my manifold pressure, dropout and such how would I do it safely without frying the thermostat? I should put a jumper wire between R and W, but I was told to disconnect the thermostat wire first. Does that mean I disconnect R place my jumper between the 2 and then put R back on? Any help of confirmation of this would be very appreciated!
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #2

    Nov 10, 2011, 06:46 PM
    Simply jump R to W, as you thought. No need to remove the stat wires, just jump r to w and you will create a call for heat. You will now be able to do your manometer testing etc. Just make sure to take the jumper out when your done.
    Furnace_Man's Avatar
    Furnace_Man Posts: 2, Reputation: 1
    New Member
    		  
    #3

    Nov 10, 2011, 06:54 PM
    Awesome, thank you very much! Ran into that problem today but I just waited long enough for a call for heat and I was able to do all of the checks I had too.
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