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24v vxt 24v safgard 400 110v burner

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USA498
USA498 Member Posts: 45
in Strictly Steam
Attempting to upgrade burner controls with a VXT 24 and safgard 400 24v. I have set up the power for both and the cutoff for the burner but I am having trouble figuring out how to hook up the VXT to the safgard for the autofeed to work. The schematic is saying I need to hook up the feed on the vxt to the A on the safgard which I have done but thne it says I need to connect the line load to to H on the VXT and connect the common to N on the vxt. This does not make much sense to bring 110v into the VXT to me. Am I reading this right ?



Thanks for your help !

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  • Steamhead
    Steamhead Member Posts: 16,845
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    What boiler

    are you using these controls on?
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • USA498
    USA498 Member Posts: 45
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    boiler

    an old peerless steamer jottw-175-s
  • Hap_Hazzard
    Hap_Hazzard Member Posts: 2,846
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    Why?

    Both those controls are available in 120v. Why would you try to install 24v controls on a 120v gas valve?



    The main difference between the VXT 24 and 120 is that the 120 has a transformer on the circuit board where the 24 has a dropping resistor, and a 120v coil on the DEMA valve.
    Just another DIYer | King of Prussia, PA
    1983(?) Peerless G-561-W-S | 3" drop header, CG400-1090, VXT-24
  • USA498
    USA498 Member Posts: 45
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    will it work ?

    I guess i'm asking if these two devices will work with a 110v burner. If they can how would they get wired up. I got them off ebay at a good price so i am somewhat stuck with them. Maybe i should put them back on ebay and get the vxt 120 and the safguard 450.
  • Hap_Hazzard
    Hap_Hazzard Member Posts: 2,846
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    Wait a sec

    Isn't the JOT-TW175 an oil burner?
    Just another DIYer | King of Prussia, PA
    1983(?) Peerless G-561-W-S | 3" drop header, CG400-1090, VXT-24
  • Steamhead
    Steamhead Member Posts: 16,845
    edited November 2012
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    Unless someone has put a gas burner on it

    but even so, it would still use line-voltage controls.



    USA498, you might want to post the 24V units on the Buy, Sell, Barter page here. I'm assuming they are new, rather than used?
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
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