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Steam on the 1st floor, hot water on the second floor

Johnny9
Johnny9 Member Posts: 2
in THE MAIN WALL
The 2nd floor was piped in using the exact method in the following diagram on the site you recommended http://fhaspapp.ittind.com/NewsAndArticles/UniversityPressArchives.asp#2
The heat is still traveling (by this I mean the radiators are heating up on the steam part of the house) as the 2nd floor (hot water) just starts doing it's job. Since both zones aren't calling at once I'm at my wits end.

Comments

  • Johnny9
    Johnny9 Member Posts: 2
    Steam on the 1st floor, hot water on the 2nd floor

    I have a house with steam heat on the first floor and hot water heat on the 2nd floor in . The 2nd floor has hot water going through a heat exchange plate mounted near the boiler. The 2nd floor has cast iron baseboard radiators. When the 2nd floor calls for heat the first floor is getting heat as well. How can I control the heat going to the first floor short of putting valves on the first floors radiators? The first floor has cast iron baseboard Any questions or comments would help greatly. Thank you in advance!
  • Dale
    Dale Member Posts: 1,317
    Control

    Seems you are getting more heat in the boiler than you need, some systems like perhaps yours assume all parts of the bld will need heat at the same time and steam needs over 212 F to be steam. You could control this so a low limit kept the condensate at whatever min. temp you need, say 180 F and the upstairs stat just runs the water pump. If by heat downstairs you mean the warmth of the pipes that isn't steam then a auto valve on the steam supply is needed ( and expensive ). Good luck.
  • Robert O'Connor_7
    Robert O'Connor_7 Member Posts: 688
    Johnny.

    Sounds like a temperature issue. You must limit the system (Condensate/Baseboard) zone temperature usually by installing an aquastat on the BB zone. Utilization of an isolation relay is recommended so that this condition (heat migration) doesn't happen. It may be as simple as turning down the temperature of an aquastat (if one is used) and or installing a bypass (or adjusting the bypass setting).

    Here is a link for you to read regarding PROPER installation of a scavenger/condensate zone.

    http://www.bellgossett.com/Press/CounterPointJun04-B.pdf

    Robert O'Connor/NJ
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