Recent content by Jrr

  1. Jrr

    Logamatic setback problem

    I've been monitoring the boiler, mix, and room temperature so you can see that the boiler just shuts down when the night period starts...
  2. Jrr

    Logamatic setback problem

    I don't think there is an issue here, but I drew up the wiring diagram of how the system is set up right now...
  3. Jrr

    Logamatic setback problem

    Yes -- I have it set to RMSETBACK so that it uses the BFU room sensor. I am tempted to disconnect the room sensor and do an experiment with just SETBACK (i.e., just outdoor reset curve). The other two settings would work.
  4. Jrr

    Logamatic setback problem

    I went back and read the notes in the Application Manual for Example 8.7 -- I see that is says something curious: HK2 circuit (mixed temperature) • Mixed water temperature is maintained based on the selected heating curve and input from the outdoor sensor (FA), supply sensor (FV) and room...
  5. Jrr

    Logamatic setback problem

    I am not sure if you mean the BFU room sensor setting in the rotary switch. I have tried #1, #3 and #4 -- all the same -- it's currently at #1=1.8 degreesF. I am attaching a photo of my BFU and the manual page I am relying on.
  6. Jrr

    Logamatic setback problem

    A Bosch BFU (HS2105) room sensor is connected to a FM241 mix controller in the Logamatic 2107 (pretty much like Example 8.7 in the Applications Manual) -- works great except for the automatic setback mode. In fact, I replaced the BFU because I thought it might be bad with no change. So this...
  7. Jrr

    Logamatic setback problem

    I have trying to get a Logamatic 2107 night setback to work on a BFU controlled mixed circuit on a Boderus G115WS. Instead of setting the temperature back, the boiler just stops firing at the setback time until about 3AM when the boiler temperature has fallen to about 68. I can't believe that...
Top
Hey, wait a minute.

This is awkward, but...

It looks like you're using an ad blocker. We get it, but (1) terrylove.com can't live without ads, and (2) ad blockers can cause issues with videos and comments. If you'd like to support the site, please allow ads.

If any particular ad is your REASON for blocking ads, please let us know. We might be able to do something about it. Thanks.
I've Disabled AdBlock    No Thanks