Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

WM SGO-3 short cycling even when t-stat is satisfied!

blackpenny
blackpenny Member Posts: 15
in Strictly Steam
I just (today) installed a WM sgo-3 in my home and it is short cycling even after the t-stat is satisfied. I'm very confused in my very warm home. I have 1200sq and will be adding a hot water loop tomorrow. I skimmed the boiler several times and nothing seems to help. I have 2 main air vents that are fairly new. Thanks in advance.

Comments

  • Hap_Hazzard
    Hap_Hazzard Member Posts: 2,846
    What kind of LWCO did that come with?

    And how often is it cycling?
    Just another DIYer | King of Prussia, PA
    1983(?) Peerless G-561-W-S | 3" drop header, CG400-1090, VXT-24
  • nicholas bonham-carter
    nicholas bonham-carter Member Posts: 8,578
    Thermostat wiring problem

    Are you saying that even after the thermostat has been satisfied and cut off the circuit to the boiler, it continues to run in a short-cycling fashion?

    The wiring must be the problem. Doublecheck it against the diagram from the boiler mfg, and thermostat co.--NBC
  • crash2009
    crash2009 Member Posts: 1,484
    The thermostat

    should shut the boiler off when you get to the preset temperature.  Tell your installer that they might have a wire crossed.
  • blackpenny
    blackpenny Member Posts: 15
    Checked the wiring

    The boiler came with a CyleGard LWC. As far as the wiring is concerned it is a simple TR and TW connection to the Beckett burner.
  • Paul48
    Paul48 Member Posts: 4,469
    EDR

    What was the total EDR of all the radiators, and how many sq/ft of steam is the boiler rated for?
  • blackpenny
    blackpenny Member Posts: 15
    Installer sucks

    I am the installer! lol
  • crash2009
    crash2009 Member Posts: 1,484
    I'm laughing too

    I thought you were the victum of the installer.  What kind of thermostat do you have?
  • blackpenny
    blackpenny Member Posts: 15
    Honeywell t-stat

    I have a digital/programmable Honeywell 5-2 t-stat. I'm not the best when it comes to steam, I do all supermarket service work now and haven't touched a steam boiler other than my own in over 7 years.
  • JStar
    JStar Member Posts: 2,752
    Boiler

    Disconnect the thermostat. See if it still happens.
  • Hap_Hazzard
    Hap_Hazzard Member Posts: 2,846
    Read the CycleGard Manual

    I think you'll find your answer there.
    Just another DIYer | King of Prussia, PA
    1983(?) Peerless G-561-W-S | 3" drop header, CG400-1090, VXT-24
  • crash2009
    crash2009 Member Posts: 1,484
    Do you

    have an aquastat?
  • blackpenny
    blackpenny Member Posts: 15
    beckett A/C ready kit???

    t-stat disconnected and still happening.

    ok, go easy on me ....but, ....the burner came with a jumper on R to W. Do i leave this in?

    Also read in the beckett manual that I may need a A/C ready kit if boiler is cycling. ???
  • blackpenny
    blackpenny Member Posts: 15
    aquastat

    no auquastat ....yet. I will install one when i add my hot water loop tomorrow.
  • Hap_Hazzard
    Hap_Hazzard Member Posts: 2,846
    I think you've bypassed the thermostat.

    The LWCO turns off the burner for 90 seconds every 10 minutes. Apparently this is the only thing that's controlling your gas valve. Go over the wiring diagram inside the CycleGard cover or the one in the manual. If you connected the optional connection from the "burner" terminal to the gas valve, disconnect it and see if the thermostat works. If it does, make sure you are connecting the right gas valve terminal to the "burner" terminal.
    Just another DIYer | King of Prussia, PA
    1983(?) Peerless G-561-W-S | 3" drop header, CG400-1090, VXT-24
  • Paul48
    Paul48 Member Posts: 4,469
    The

    jumper(resistor) between T-T on primary control was cut?
  • blackpenny
    blackpenny Member Posts: 15
    hmmmm

    The beckett burner came with a jumper from W to R, so I removed my t-stat wires going to W R and it's still running. So the question is, where do I connect my t-stat wires? Looked at the wiring diagram on the cyclegard and I dont see where my t-stat connection would be. It's late and I'm confused after a very long solo install on a 600lb boiler.
  • crash2009
    crash2009 Member Posts: 1,484
    edited October 2012
    Ya

     got it nailed Hap?  I'm going back to the fight.
  • blackpenny
    blackpenny Member Posts: 15
    T-stat wires

    Where do I connect my t-stat wires if not on the burner???
  • JStar
    JStar Member Posts: 2,752
    Tstat

    The tstat goes to R and W without a jumper.
  • blackpenny
    blackpenny Member Posts: 15
    I don't get it.

    I have t-stat to r and w without jumper and nothing! I'm so tired and frustrated. I just don't get it.
  • blackpenny
    blackpenny Member Posts: 15
    LWC

    Do I need to wire anything to my LWC??? Are the t-stat wires direct from my t-stat to the R and W on the 7505 on the burner?
  • AaronH
    AaronH Member Posts: 59
    Post a photo of your burner control

    Please post a photo of your burner control's wiring, and let us know what model it is. 

    There was an error rendering this rich post.

  • blackpenny
    blackpenny Member Posts: 15
    Beckett Genisys 7505

    I have my t-stat wired directly to the R and W on the 7505.
  • crash2009
    crash2009 Member Posts: 1,484
    edited October 2012
    Is this

    what you are working with?



    http://www.beckettcorp.com/protect/techsuppt/product-manuals/61649GeniSysProductLit1.pdf
  • blackpenny
    blackpenny Member Posts: 15
    edited October 2012
    yes

    the one on the left without the display.
  • blackpenny
    blackpenny Member Posts: 15
    Anyone???

    I ran all new t-stat wire from first floor to burner. Still not running. Boiler only runs with jumper from TW to TR on burner and will not shut off when t-stat is satisfied.
  • blackpenny
    blackpenny Member Posts: 15
    SOLVED!

    Bad t-stat wire. I ran new from first floor to my jumper split by my water feed valve but forgot to run from there to the boiler. Wow! I can be real dumb sometimes!!!
  • Hap_Hazzard
    Hap_Hazzard Member Posts: 2,846
    edited October 2012
    Okay, and do the LWCO and pressuretrol still turn it off?

    Make sure that the CycleGard turns off the burner on low water (amber light) and for the intermittent level test (green light). Also tip the rocker on the pressuretrol and make sure it cuts the burner.



    And did you say you had a water feeder too? No wonder you were confused. I installed a CycleGard and a water feeder last year, on a 30 year old Peerless. Of course the manual for the burner control didn't say where to connect a water feeder, and the Hydrolevel manuals weren't too clear on how to install their controls on a 30 year old Honeywell burner control, so I put all the manuals together and sketched out the connections and hooked everything up and... nothing. So I stepped back and took another shot and finally figure out that I needed to run another pair of wires from the transformer, which someone thoughtfully installed under my breaker box instead of anywhere near the boiler. Good times!



    Oh, and by the way, I used to be an electronics technician, so don't feel bad about not getting your wiring right on the first try.
    Just another DIYer | King of Prussia, PA
    1983(?) Peerless G-561-W-S | 3" drop header, CG400-1090, VXT-24
  • blackpenny
    blackpenny Member Posts: 15
    done

    everything seems to be functioning as they should. i'll be starting on my hot water loop in a bit. thanks all.
This discussion has been closed.

Categories