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Louvered damper with lockout

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Rob8339
Rob8339 Member Posts: 2
in Thermostats and Controls

Hi, I am looking for assistance regarding the integration of a fresh air electronic louver damper with lockout into my existing setup. I have two Weil-McLain natural draft boilers that are electronically operated by a Tekmar mixing control 354 and a two-stage boiler with domestic hot water control 252. The specific issue I am facing involves the Honeywell motor that operates the louvers, which has only two wires and requires 24 volts to open and close it, along with a dial to set the open and closed positions. Any guidance on this integration would be greatly appreciated.

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  • mattmia2
    mattmia2 Member Posts: 13,436

    microswitch with a lever actuator positioned on a bracket such that it is closed when the vane is in the open position?

    Rob8339
  • mattmia2
    mattmia2 Member Posts: 13,436
    edited June 16

    might already be a cam on the linkage for this or you could just position it so the tip of a vane trips the switch. Probably much less expensive from an electronics distributor like mouser or digikey.

    Rob8339
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 18,209

    if the honeywell damper actuator does not have a damper open proving switch (sounds like it dosent) you can get a switch that mounts on the damper. Try Kele Associates they are in TN you can google them

    On a call for heat you want the damper to open when the proving switch makesyou want the boilers to fire. You also will probably need a relay to do this

    Rob8339
  • ratio
    ratio Member Posts: 4,061

    You want to prove the damper in the open position, not the actuator in the open position. Google "whisker switch".

    Rob8339
  • Rob8339
    Rob8339 Member Posts: 2

    Hey! I just wanted to say a big thank you! I was doing some mental gymnastics trying to figure out how I would make this work, and your information was super insightful. Thanks a ton!

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