Wiring RA832a Switch into Honeywell EIM

Discussion in 'HVAC Heating & Cooling' started by Matthew Haberland, Nov 10, 2020.

  1. Matthew Haberland

    Matthew Haberland New Member

    Nov 10, 2020
    HVAC Maintenance Tech
    I am looking at wiring a Honeywell EIM into a boiler system, which is using RA832A switch. I am not very familiar with the wiring for boilers and their corresponding wiring. So any help on how the TT terminals from the switch would be wired into the EIM?
  2. fitter30

    fitter30 Well-Known Member

    Feb 2, 2020
    Retired service tech
    Peace valley missouri
    Emi when heating calls RH to W closes putting out 24v to common. Ra relay needs a dry contact across T-T to energize relay so there not going to work together without a relay. What is the full model # of emi and what is sequence of operation trying to do.
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