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Zone valve and automag wiring questions

Post in 'The Boiler Room - Wood Boilers and Furnaces' started by gorsuchmill, Nov 22, 2008.

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  1. gorsuchmill

    gorsuchmill New Member

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    I'm almost finished installing my Tarm and have a couple simple wiring questions. First, I need to connect my Automag to a transformer and want to make sure I have it right. I assume I connect the red (fuse) wire to the Load/R terminal on the 24v side and the white wire to the NEC/C side. Second, I need to connect the zone valve to the BLT panel I purchased from Bioheat USA. The zone valve has 5 screw terminals. The three that I believe are meaningful are labeled TR/TH, TH and TR. Since I am not using a thermostat, but rather am simply going to the control panel should I just use the TR/TH and TR terminals? Also, does it matter which wires (i.e. red or white) connect to which terminals on the zone valve and BLT terminal strip?

    Thanks for your help.

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  2. gorsuchmill

    gorsuchmill New Member

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    Any thoughts on these questions? These are the last two items I need to complete my install and am hoping for a test fire by Thanksgiving.

    Thanks.
  3. kevindauch

    kevindauch New Member

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    I'm not sure about the Bioheat BLT panel, but the polarity really doesn't matter, thermostats are 24 volt AC. I'm assuming that you are just using the 24 volt step down transformer in the BLT panel for power for the automag valve.
  4. gorsuchmill

    gorsuchmill New Member

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    Actually, I'm using a separate transformer for the automag. It has a "Load/R" terminal and "NEC/C" terminal. Are you suggesting 24 volt wiring is indifferent as to which wire goes where? Would the same then apply to the zone valve?
  5. Bad Wolf

    Bad Wolf Minister of Fire

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    The automag dosen't care which way you hook it up. There is a rectifier on the red wire anyway which will make it DC so it can energize the coil.
    Don't know about the other issue.

    Greg
  6. gorsuchmill

    gorsuchmill New Member

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    Thanks Squeezle and Greg, now the zone valve and I'm done.
  7. kabbott

    kabbott Member

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    I am not familiar with the BLT panel , but as far as the zone valve 24 volts between tr and th should open the valve. Two of the terminals should be
    an "end switch" which closes on valve opening and can be used to turn a pump on when zone valve opens. Sounds like you may not need those terminals.

    If you have a link to the BLT panel I may be able to help with that but a quick search turned up no instructions or schematic.
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