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Dunham 9a service?

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guzzinerd
guzzinerd Member Posts: 235
edited January 14 in Strictly Steam
Been cleaning up the dust on the pipes around the boiler.  Repainting the return trap made me wonder... These things need any sort of periodic maintenance?


Bryant 245-8 2-pipe steam in a 1930s 6-unit 1-story apt building in the NM mountains.  26 radiators heating up 3800sqf.

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  • Dave in QCA
    Dave in QCA Member Posts: 1,786
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    https://youtu.be/j9FfGBXxDVE

    This link is helpful. 
    Dave in Quad Cities, America
    Weil-McLain 680 with Riello 2-stage burner, December 2012. Firing rate=375MBH Low, 690MBH Hi.
    System = Early Dunham 2-pipe Vacuo-Vapor (inlet and outlet both at bottom of radiators) Traps are Dunham #2 rebuilt w. Barnes-Jones Cage Units, Dunham-Bush 1E, Mepco 1E, and Armstrong TS-2. All valves haveTunstall orifices sized at 8 oz.
    Current connected load EDR= 1,259 sq ft, Original system EDR = 2,100 sq ft Vaporstat, 13 oz cutout, 4 oz cutin - Temp. control Tekmar 279.
    http://grandviewdavenport.com
    guzzinerd
  • guzzinerd
    guzzinerd Member Posts: 235
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    Thank you 
    Bryant 245-8 2-pipe steam in a 1930s 6-unit 1-story apt building in the NM mountains.  26 radiators heating up 3800sqf.

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