No heat/hot water on new install by others

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adamkirwan1994
adamkirwan1994 Posts: 4
in Thermostats and Controls

Taco 506 circ zone board- found system wiring like this on arrival. The thermostat terminals have no voltage on board but have 24 v on end switch. The indirect aquastat wiring also seems incorrect but wanted to get some insight from more experienced technicians. When adding 24v from separate source to t stat terminals it activates the circs/zones. (Indirect on zone 6)

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Photos for reference.

Comments

  • pedmec
    pedmec Posts: 1,488

    Just to clarify are you using zone valves?

  • adamkirwan1994
    adamkirwan1994 Posts: 4

    he has circulators

  • tcassano87
    tcassano87 Posts: 154

    no zones turn on at all?

    Have to checked the Fuse on the Relay Box?

    Is the In-Direct wired to the Taco Relay or the hyrdostat? Because wiring would be different for both

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  • adamkirwan1994
    adamkirwan1994 Posts: 4

    fuses all fine, indirect control wired to zone 6 on board, I included pictures in post as well. They used a jumper wire on the indirect control instead of a dedicated 24v which is not an option in the manual

  • adamkirwan1994
    adamkirwan1994 Posts: 4

    also no idea why they wired the white wire to the C terminal on all heat zones

  • Jamie Hall
    Jamie Hall Posts: 27,894

    Can you make a circuit diagram of how it is wired now?

    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England

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