Click here to Find a Contractor in your area.
Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.

Slantfin Multi/Pak Baseboards

Joe V_2
Joe V_2 Member Posts: 234
How well do these work?  I have to add radiation to unheated rooms and prefer to use baseboards if possible but there is not much out there for steam baseboard, even on the slantfin site.  Seems like it is possible but they prefer to use hot water.

Comments

  • Steamhead
    Steamhead Member Posts: 14,830
    I've used them for steam

    specifically, Vapor which is 2-pipe. As long as the existing radiation is low-mass, such as convectors, the Multi-Pak 80 with the steam-type element having black iron pipe instead of copper will fit in nicely. If this is a one-pipe system, you'll have to run return lines from the Multi-Pak to the wet return (or use a water seal if you have a dry return)  and pitch the element down to the return end, otherwise it will bang. 



    If the existing radiation is cast-iron, the Multi-Pak is not such a good choice. It does not hold heat like cast-iron will, so the rooms with the Multi-Pak will go cold much more quickly. In this case, cast-iron baseboard or traditional radiators are the right choice.
    All Steamed Up, Inc.
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • Joe V_2
    Joe V_2 Member Posts: 234
    that's good information

    Thanks steamhead!  It is a vapor system that runs on 8oz.  I have not considered to lack of mass letting the rooms cool faster.  The rooms are bathrooms and kitchen and they  comfortable with only electric oil fill radiators from Lowe's as a heat source.  I'll have to give it more thought. 
  • Joe V_2
    Joe V_2 Member Posts: 234
    edited June 2010
    oops.

    sorry, posted twice
  • Joe V_2
    Joe V_2 Member Posts: 234
    going with the cast iron but

    ...there isn't much written about baseboards on a 2 pipe vapor system.  There is enough but I'm still curious.  Why does a baseboard need an air vent on the return and not a steam trap?  
  • Steamhead
    Steamhead Member Posts: 14,830
    edited June 2010
    On Vapor

    you hook up cast-iron or fin-tube baseboard just like a radiator- inlet valve at one end, and pitching down to the return connection (with trap if used). No air vent is needed since the air exits with the water at the return connection.



    If this is an Orifice system that doesn't use traps, you orifice the inlet connection in the usual manner. What type of Vapor system is it, BTW?



    On a one-pipe system, you use an air vent at the far end of the baseboard, but you need a return line since the water doesn't have enough room to flow back against the steam in the baseboard. In this case the return line only carries water, not air, and a steam trap won't work because it would let steam flow up the return and close the air vent. That's why a water seal or a wet-return connection is the way to go when using baseboard on a one-pipe system.
    All Steamed Up, Inc.
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • Joe V_2
    Joe V_2 Member Posts: 234
    edited June 2010
    But...

    In TLAOSH, it says traps wont work. Did I misunderstand it?I have valves on existig rads and it is a Trane system
  • Steamhead
    Steamhead Member Posts: 14,830
    edited June 2010
    If you're referring to

    the discussion on page 99, that only refers to hooking up baseboard on one-pipe systems, not Vapor systems.



    On Vapor, there must always be a way to keep steam from getting into the dry return. The most common way to do this is with a trap. So if the entire Vapor system has radiator traps, you'd use a trap on your baseboard.
    All Steamed Up, Inc.
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • Joe V_2
    Joe V_2 Member Posts: 234
    Thank you!

    Steamhead, thank you for clarifying for me!  I didn't think it made sense.
This discussion has been closed.