C. The pump comes already mounted directly to the furnace
without
a shut-off valve.
However, it is a good idea to install a shut-off valve above the pump (as pictured below)
so that if the pump ever has to be changed, the water supply can be shut off so water
doesn’t flow out of the furnace during the repair or pump replacement.
Simply add a valve and a threaded pipe (threaded on both ends), as shown.
D. It is also a good idea to put TWO shut-off valves on the return lines. This helps bleed
the system of air and is a big help when troubleshooting. (Shown on next page.)
ALL of these parts are available as an “installation kit” (saving a lot of running around)..
See the picture on next page. Note that two different types of shutoff valves are used,
but they can be the same. Personally, I would reverse them to make bleeding easier.
When you have
several large
pumps, it’s better
to have the pumps
at the bottom and
the return line
where the pump is
shown now!
Simply reverse
what is shown and
you will have a
better setup!
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