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Sears Vented Heater

vintageheat
vintageheat Member Posts: 4
in Gas Heating

Hi,,New here,,Picked up a old Sears Vented Heater Model 155 850232. Would like to change it from Nat. to LP,, I can find the orifices I think,,wondering if I have to do something with the main gas valve,I believe it is a 31A valve.

Thanks for any info and help...

Comments

  • 109A_5
    109A_5 Member Posts: 3,042

    Is the valve rated for LP ?

    If so the burner's manifold pressure should be verified & adjusted if needed and a combustion analysis done to verify the modification is working correctly.

    National - U.S. Gas Boiler 45+ Years Old
    Steam 300 SQ. FT. - EDR 347
    One Pipe System
  • vintageheat
    vintageheat Member Posts: 4

    I assume so,Sears Parts Direct gave me a part # for a kit of conversion orifices. Guess I will have to find someone that could tell me if the valve can handle propane.Thanks..

  • vintageheat
    vintageheat Member Posts: 4

    The gas valve is a Model 36C06,,from my research today , I believe it looks pretty easy to convert the valve over and parts look available. Any recommendations on working on the gas valve would be great…

  • Big Ed_4
    Big Ed_4 Member Posts: 3,300
    edited October 25

    The kit should come with a new plunger for the gas regulator in the valve . Then you need to set the gas pressure to spec . A manometer is used to measure the low pressure ..

    If its a old stranding pilot there would be a pilot change

    ..

    There was an error rendering this rich post.

  • mattmia2
    mattmia2 Member Posts: 14,599

    does the kit come wit instructions or are there instructions on the sears parts web site? The 155 source code seems to indicate that it was made by preway.

  • vintageheat
    vintageheat Member Posts: 4

    Can anyone tell by these pics,,if this valve is natural gas only and I won't be able to convert it???

    Screenshot_20251026-072544_Gallery.jpg
    Screenshot_20251026-072528_Gallery.jpg
    Screenshot_20251026-072513_Gallery.jpg
  • 109A_5
    109A_5 Member Posts: 3,042

    Sadly the only data I can find so far skips your gas valve.

    image.png

    https://media.copeland.com/9483cfb3-af75-45f4-9aa2-b16b00f94e2f/R-4360_36_series_gas_valve_ref_9_12.pdf

    National - U.S. Gas Boiler 45+ Years Old
    Steam 300 SQ. FT. - EDR 347
    One Pipe System

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