Search Results - HVAC-Talk: Heating, Air & Refrigeration Discussion

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Type: Posts; User: drewski11

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  1. still waiting?

    still waiting?
  2. yes, same one as being discussed.

    yes, same one as being discussed.
  3. There is only a 24V W terminal. No W2 so unlike...

    There is only a 24V W terminal. No W2 so unlike the Infinity/Evolution, connection for a 2-stage stat is physically not possible.

    From tj's earlier post w/ info from the York tech guy that really...
  4. Replies
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    i would have said combustion air until you said...

    i would have said combustion air until you said it was spliced into the return ducting. now i'll say weird uncontrolled ventilation.
  5. partially blocking the return could impact things...

    partially blocking the return could impact things based on the total CFM of the system and the total return size after blocking. if you do that you may need to increase the other return or add an...
  6. according to the documentation, Run 2 mode occurs...

    according to the documentation, Run 2 mode occurs after the thermostat opens the W contact saying it's satisfied.

    - if the furnace calculates that demand can be met by the minimum firing rate or...
  7. For retrofitting a PSC motor with ECM you should...

    For retrofitting a PSC motor with ECM you should look at the Genteq Evergreen or Emerson Rescue EcoTech. These can wire directly to the PSC speed taps on most control boards. The X-13 is a basic ECM...
  8. Thanks for the update. A still open question...

    Thanks for the update.

    A still open question is if having the COMM stat helps the modulation control algorithms by passing set point and interior temperature data to the furnace control board.
    ...
  9. You mention this issue was noticed after the new...

    You mention this issue was noticed after the new system went in. Is this a new issue with your new system and wasn't a problem with the old one? Were there any ducting changes done with the install?...
  10. Thread: Boilers

    by drewski11
    Replies
    19
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    841

    My parents have a W-M Ultra Plus indirect. It has...

    My parents have a W-M Ultra Plus indirect. It has it's own thermostat / aquastat so will only call for the boiler to run when it needs it. If you have a high BTU boiler connected to it the water will...
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    The TH8320 can definitely support the additional...

    The TH8320 can definitely support the additional sensor. Either Outdoor or Remote Indoor, but not both.

    It's odd that it skips to 500 because 350 & 360 are Heat Pump related settings. Possibly...
  12. i'll see. right now i have a wireless t-stat...

    i'll see. right now i have a wireless t-stat controlling the furnace so testing the new Stat would require running some new wiring which may not happen unless i agree to buy.

    the issues with...
  13. motorized valve in the drainline? something like...

    motorized valve in the drainline? something like a hydronic zone valve? closed on heating call, open on cooling call?
  14. thanks for the info! interested to see the next...

    thanks for the info! interested to see the next report!

    as i mentioned previously, my contractor, LJ Kruse in Berkeley has one. i should get them to temporarily hook it to my furnace to see what...
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    my contractor got one for me last Thursday. we...

    my contractor got one for me last Thursday. we haven't decided whether to buy / install it or not.

    here's a post discussing some of what it can / can't do. all info not verified yet....
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    it was PVC. i think the comment was directed...

    it was PVC.

    i think the comment was directed at your post. shouldn't the liquid PVC cement be dry before firing up the furnace and having wet exhaust gases flowing through it?
  17. there are 3 jumper settings for Cont Fan on the...

    there are 3 jumper settings for Cont Fan on the board. tj said the low speed on the board was still too high.

    the Comm Stat docs say it can adjust as low as 17% fan speed which i'm guessing is...
  18. it looks like the continuous fan speed can be...

    it looks like the continuous fan speed can be controlled in Heating Mode (i.e. in Heating Mode, but burners not firing. Continuous Fan set to On). what you can't modify is the fan speed while the...
  19. have you tried the continuous fan mode to help...

    have you tried the continuous fan mode to help even the heat between cycles?
  20. if it's any consolation, this thread is giving me...

    if it's any consolation, this thread is giving me some buyers remorse for the YP9C sitting in my crawlspace. My contractor actually told me to hold off on the communicating stat until he researches...
  21. is the York ambiguity helping to alleve your...

    is the York ambiguity helping to alleve your buyers remorse? :)
  22. Replies
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    1,269

    The Aprilaire has a pretty good design, imo, with...

    The Aprilaire has a pretty good design, imo, with the expanding filter sliding into tracks at the top & bottom of the cabinet (2410) minimizing unfiltered air sneaking around the filter. I like the...
  23. I believe your buddy when he says the modulation...

    I believe your buddy when he says the modulation is board controlled. It doesn't matter to me whether the algorithm is in the furnace or in the stat.

    What is not clear is if any data is being...
  24. I just re-read the whole thread to see what I...

    I just re-read the whole thread to see what I missed and I don't know we're all on the same page.

    I think I can say we're in agreement that the modulation algorithms are on the furnace control...
  25. Are all 17 loops controlled by one thermostat or...

    Are all 17 loops controlled by one thermostat or are there multiple zones and zone valves?

    As others have said, there's probably both a pump size issue as well as a balancing issue between all...
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