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    Morkstall's Avatar
    Morkstall Posts: 1, Reputation: 1
    New Member

    Sep 22, 2018, 01:12 PM
    2 Wire boiler connected to a honeywell RTH6350 D1000
    I have a 2 wire (Red & Yellow) system for my boiler with no AC. I have put the red wire in the red slot and the yellow in the y slot. No luck. Am I wiring this incorrectly?
    talaniman's Avatar
    talaniman Posts: 54,178, Reputation: 10852

    Sep 22, 2018, 02:59 PM
    Do you have a display? Is it set up? What stat did you have before and why did you change it?
    massplumber2008's Avatar
    massplumber2008 Posts: 12,809, Reputation: 1210
    Senior Plumbing Expert

    Sep 23, 2018, 04:49 PM
    Hi Morkstall

    In most cases where there is a simple two wire thermostat for heat only you install one wire to R and one wire to W... color of the wires does not matter. Try installing the yellow wire to W... should be al set after that!


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