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/.
Click here to Find a Contractor in your area.

Copper with cast

Paul Mitchell_2
Paul Mitchell_2 Member Posts: 184
in THE MAIN WALL
Hey guys
I have never mixed copper baseboard with cast iron rads. Ever since I was told by the old timers when I was a pup. Have a customer with a leaking rad in a 10x10 room. System is mono-flo...would a small piece of high output baseboard work properly if btu rating was correct?
Thanks

Comments

  • tim smith
    tim smith Member Posts: 2,818
    cast & copper

    IMHO, NOOOO. Cast and copper fin have a much different rate of heat up and cool down. I always find that when people put fin tube on same circuit the room with fin is going to run cool. The cast circuits stay warm and keep the t stat off quite along while after the baseboard has been dead cold causing that room to cool down. How bout cast iron baseray instead, just an option.
  • Paul Mitchell_2
    Paul Mitchell_2 Member Posts: 184


    That is what I was thinking. I m waiting on some costs of radiators from burnham and I am going to price it with baseray too.
    Just making sure I wasnt crazy
    Thanks
  • Boilerpro_3
    Boilerpro_3 Member Posts: 1,231
    Yes, it can work decently

    the key is to make sure that the design operating temps of the baseboard match the rads, which usually means designing them for 140 F water. Then, due to the great difference in mass, water must be circulated continouously so the basebaords will continue to put out heat as long as heat is available from the rads. This way the system warms up and cools down together. The only limitation is that the heating curve of rads is steeper (more heat at low temps) than baseboard, but they tend to be reasonably close to work.

    If you use cast iron baseboard with old gravity rads, I'd suggest you do the same thing. the old rads hold alot more water per EDR than cast iron baseboard, so you can still get uneven heating.

    Boilerpro
  • J.C.A._3
    J.C.A._3 Member Posts: 2,980
    If it's,

    On monoflow tees, why not cut it out, plug off the tees and make it it's own zone with the Baseboard? Put a thermostat in the room , and run it to the owners content.

    Mixing and matching RARELY works, for the reasons stated. C.I. holds heat FAR longer than the fin tube. JMHO. Chris
  • Mike Kraft_2
    Mike Kraft_2 Member Posts: 398
    If you do JCA's suggestion

    Don't cap em loop em:)Or remove them.

    cheese
This discussion has been closed.

Categories