Click here to Find a Contractor in your area.
Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit

condesate heating from a one pipe steam boiler

The XX terminals are dry contacts in the relay.Wire them and the terminals of the 4006 in series with the thermostat connections that are there now.


  • May
    May Member Posts: 4
    condensate heating for a one pipe steam boiler

    Hello, I'm am an industrial plumber, working for a big company in the Northeast, however this question is for my own personal system. Could you please tell me how to wire in the aquastat (L4006A) model with the gas valve (Robertshaw-Grayson) coming from a relay (RA832A). I have power to the relay with the thermostat doing the controlling of my Taco circulator. I would like to be able to fire the boiler for the condesate loop, with out making steam, but I'm not sure of the wiring, trying not to burn out the gas valve and or relay. Please help. Sincere thanks.
This discussion has been closed.