Puzzled by my Tarm

  • Active since 1995, Hearth.com is THE place on the internet for free information and advice about wood stoves, pellet stoves and other energy saving equipment.

    We strive to provide opinions, articles, discussions and history related to Hearth Products and in a more general sense, energy issues.

    We promote the EFFICIENT, RESPONSIBLE, CLEAN and SAFE use of all fuels, whether renewable or fossil.
  • Hope everyone has a wonderful and warm Thanksgiving!
  • Super Cedar firestarters 30% discount Use code Hearth2024 Click here

Thom Griffin

Member
Mar 25, 2012
36
Haven't been on this sight much for the past several years, which is good 'cause that means everything is running fine, but...
My Tarm 140 is about 9 year old. My question concerns the logic controller (which controls both the wood boiler and the oil boiler) the aquastats, the zone valve, and the (2) three-way valves. I installed the whole system myself, so I know my way around somewhat. I'm thinking I just need to follow the voltage, but the actual path is not apparent to me.

Any help would be greatly appreciated.