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Moline system questions

NYJoe
NYJoe Member Posts: 1
in Strictly Steam
We purchased an old victorian home about 15 years ago. The heating system appears to be a Moline Vacuum system (pictures show the vacuum valve and air trap).  What is the valve for on the air trap?  I am wondering why the radiators on the first floor have what looks like steam traps while the radiators upstairs have valves (see pictures).  I don't see the ejector or condensor anywhere in the system.  At one point I had a radiator that didn't get hot.  I removed the steam trap body from inside the trap body and the radiator worked great.  Some of the first floor radiators don't get fully hot -- could that be because of the steam traps?  Also, for the last 15 years, the system hammered on start up -- sometime quite loud.  But, amazingly this winter it stopped.  The system is very quiet -- alI I hear is the tap-tap-tap of the air valve. Any comments you folks have would be appreciated.  Thanks

Joe Berini   

Comments

  • Dave in QCA
    Dave in QCA Member Posts: 1,788
    edited January 2011
    close to Moline...

    The city limits of the town of Moline IL is only 22 blocks from my front door!  I should know more about he Moline vapor system, but I don't, other than the traps are not original, and appear to be Dunham 1E traps.  Moline usually had a hand valve on the inlet and a key valve on the outlet.  I know there was also and ejector, but, You're going to have to wait until one of the pros who is experienced with Moline systems to give you more information.



    Have you found the materials in the category, Resources\Library?



    Here is the link to the publication that is there.  http://www.heatinghelp.com/files/articles/1375/27.pdf
    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
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