Almost all Refrigerators have defrost drain lines which
are piped to a Condensate drain pan on top of the
compressor or electricaly heated. However some of
couse lead to a trap and outside drain
"MiamiCuse" wrote in message
...
My kitchen was recently demolished and had someone came and removed all
the appliances and cabinets.

Above the stove top there is a range hood which has a galvanized 4" vent
pipe that exhaust to the roof.

About seven feet over there is another galvanized vent pipe, same size
that goes through the roof but I have no idea what it is for. They have
already demoed everything and they didn't remember what it was connected
to. But the location of it was where there used to be a double oven.
Oven was 35 years old brand was Thermatronic by Thermador. Does an older
oven need a 4" exhaust vent? or may be it was an abandoned old vent that
was not connected to anything.

Another question. We also removed a huge refrigerator brand name Subzero
also 35 years old. This monster has a copper pipe connected to it's back
and it is not an ice maker supply feed. It routed into the wall, followed
the bottom plate and exited the house, on the outside is a trap and
stopped. It almost look like a normal air conditioning condensation drain
line, but from a refrigerator? I have owned a dozen refrigerator and
never seen one that needed a dedicated drain line.

May be I am just ignorant of these old old appliances. I want to make
sure I am doing this right.

Thanks,

MC