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Tekmar 260

Terminals 1&2 (Blr Demand) and 3&4 (DHW Demand) require a powered input - 24vac, 120vac or 240vac. Jumping them won't create a heat demand, but a powered input will. You can create a heat demand by jumping 5(L) to 1 and 6(N) to 2 and see if you can fire the boiler and start the pump(s). If this works, then you will have check your power source from your heat demand. See the following link if you don't have a copy of the applications brochure from temmar http://www.tekmarcontrols.com/literature/acrobat/a260.pdf


  • NWS
    NWS Member Posts: 2
    Tekmar 260 Control

    I am having a problem on a 260 control; When I test the powered imputs I can fire the boiler, get the pumps to work; When I test my boiler demand terminal I have no voltage and if I jump the terminal the boiler won't fire; same with DHW demand;
    Any help would be appreciated.
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