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wet & dry returns

I have supply lines off the main headed to a tee. One side of the tee
attaches to the supply riser, the other side is dripped to a wet return. My
system also has a wet return to which all return risers (should be) are

> In this configuration, couldn't I do without either one or the other as
long as they're vented properly?

I am particularly interested in getting rid of the wet returns. It just
seems like less pipe and with the dry return I would only need to vent the
end just before the return dropped down instead of venting at the base of
each return riser if only the wet return remained.

Does it hurt to have both?

Additionally, the wet return is about 1" above the water line of the
boiler and all supply risers are dripped to it. I assumed this is a bad
thing because, by definition, the wet return becomes a dry return and
violates the "B" dimension requirements. I just don't know what bad things
may happen - boiler water level problems, hammering, etc? So what bad things
can happen?
Thanks and regards,

Bill Jenkins


  • DanHolohan
    DanHolohan Member, Moderator, Administrator Posts: 16,489
    Are you able

    to post a sketch of this?
    Retired and loving it.
This discussion has been closed.