Wiring RA832a Switch into Honeywell EIM

[Matthew Haberland]

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?

 

[Fitter30]

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.