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Love this boiler.Oh and that water tank....

Marz
Marz Member Posts: 90
This 2 pipe system works great. Just wish I could get the zone valves to work right. Main zone valve was stuck in the open position, which caused the unit to run until the cows came home. Temperature in the house was over 100 degrees back in August. I think i need to adjust the cam so that the mercury bulb goes back and forth correctly.
Tinman

Comments

  • hvacfreak2
    hvacfreak2 Member Posts: 500
    It's piped wrong , needs Gorton #2's , oh wait this is one of those. lol

    That is one cool , historically significant , awesome vapor system ( I think ) man. I would keep that old cam actuated electric control in place just for the effect but there has to be something available that can do that better ( that could be hidden in a hollowed out cast iron something ). Really cool system.
    hvacfreak

    Mechanical Enthusiast

    Burnham MST 396 , 60 oz gauge , Tigerloop , Firomatic Check Valve , Mcdonnell Miller 67 lwco , Danfoss RA2k TRV's

    Easyio FG20 Controller

  • Marz
    Marz Member Posts: 90
    The zone valve motors are just horrible to deal with. Both have been changed over the years, but I can't seem to get the main one in step with the thermostat. I thought it was wired wrong at first. Turn up tstat, valve closes. turn down tstat, valve opens. But after watching the other one which is working fine, It is somehow out of step.
  • hvacfreak2
    hvacfreak2 Member Posts: 500
    Shoot I took a second look , the series 90 valve actuators do indeed have 0-10 vdc converter boards that go inside of the cover. From there you have a wide range of control options.
    hvacfreak

    Mechanical Enthusiast

    Burnham MST 396 , 60 oz gauge , Tigerloop , Firomatic Check Valve , Mcdonnell Miller 67 lwco , Danfoss RA2k TRV's

    Easyio FG20 Controller

  • Marz
    Marz Member Posts: 90
    Good idea. I'll look into converting the motor controls/end switches. The mercury endswitch is problematic.
  • hvacfreak2
    hvacfreak2 Member Posts: 500
    edited November 2015
    The boards work really well , I just installed some on some old induction units in a commercial building. It gets away from the awful 135 ohm stuff and gets some real control of the motor. I used KMC 5200 series stats which were cheap as well as providing the 0-10 power supply.

    https://customer.honeywell.com/resources/Techlit/TechLitDocuments/63-0000s/63-2235.pdf

    http://www.hvacdigital.com/Product/KMC_Controls/kmc_cte-5200.aspx

    hvacfreak

    Mechanical Enthusiast

    Burnham MST 396 , 60 oz gauge , Tigerloop , Firomatic Check Valve , Mcdonnell Miller 67 lwco , Danfoss RA2k TRV's

    Easyio FG20 Controller

  • Marz
    Marz Member Posts: 90
    Thats really good to hear. I will add 4 Gorton #2's while i'm at it. :)
  • hvacfreak2
    hvacfreak2 Member Posts: 500
    Marz said:

    Thats really good to hear. I will add 4 Gorton #2's while i'm at it. :)

    LOL , yeah I was trying to think of the common replys that seem to go with each thread.
    hvacfreak

    Mechanical Enthusiast

    Burnham MST 396 , 60 oz gauge , Tigerloop , Firomatic Check Valve , Mcdonnell Miller 67 lwco , Danfoss RA2k TRV's

    Easyio FG20 Controller

  • Marz
    Marz Member Posts: 90
    That made my morning !! Only 2 no heats have called in so far today, so when I read that I actually LOL'd
  • Steamhead
    Steamhead Member Posts: 16,736
    Marz said:

    Thats really good to hear. I will add 4 Gorton #2's while i'm at it. :)

    I bet that Barnes & Jones Vapor system has crossover traps- enlarging these might have the same effect.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • hvacfreak2
    hvacfreak2 Member Posts: 500
    edited November 2015
    I posted the links to the boards and stats back a couple of posts..

    As far as the system can you explain a bit about it. I really don't know what I'm looking at in those pictures. I'm assuming that is an alternating receiver , but it may be some magic gravity hot water device for what I know.

    hvacfreak

    Mechanical Enthusiast

    Burnham MST 396 , 60 oz gauge , Tigerloop , Firomatic Check Valve , Mcdonnell Miller 67 lwco , Danfoss RA2k TRV's

    Easyio FG20 Controller

  • Steamhead
    Steamhead Member Posts: 16,736
    Correct- B&J calls it a Condensator.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • hvacfreak2
    hvacfreak2 Member Posts: 500
    edited November 2015
    I need to get a new lost art book , mine has fallen into pieces and the vapor chapter is upstairs I think , lol.

    edit , I do have the companion , page 156 condensator , got it .
    hvacfreak

    Mechanical Enthusiast

    Burnham MST 396 , 60 oz gauge , Tigerloop , Firomatic Check Valve , Mcdonnell Miller 67 lwco , Danfoss RA2k TRV's

    Easyio FG20 Controller

  • This might be a good time to consider disabling those zone valves, and installing a better control system. The zone valves may have been added later as a bandaid to correct an imbalance due to improper maintenance.
    I wonder if the burner has a couple of stages on it to bring it closer to the heat loss once the pipes have warmed up.
    Is the system operating at the correct low pressure for a vapor system-ounces?
    Are the crossover traps working properly, to ensure a quick release of air, and even steam distribution?--NBC