On 10/23/2011 09:52 AM, Stormin Mormon wrote:
Makes me wonder if the cover snaps off? Might have to
unscrew one of the ducts to get at the humidifier. Sounds
like you say, a poor install.


Ugh...

I think I found it. after dragging out a stepstool and sticking my head
farther in there it looks like it's held on by four flathead screws.
unfortunately I don't have a right angle screwdriver handy (I have one,
but it's probably in a roll cabinet in my storage locker.)
Additionally, the humidifier is fed by 120VAC from the "emergency
shutoff" switch through a sail switch in the return (why not tap it off
the furnace control board somewhere?) then through a transformer screwed
to the return plenum and from there to the humidistat. The sail switch
is stuck in the "on" position so that needs to be fixed somehow, and
even worse, whoever wired it up tied that 120VAC to the always hot wire
in the emergency shutoff box not the switched side. And left unstapled
romex laying on top of the supply duct.

Ever have one of those days where you wish you could just pretend you'd
never seen anything and walk away?

Oh, I finally found the model number of the furnace - it's a Rheem
RGEB-06EC-FS. Unfortunately that seems to be not helpful as finding a
manual or a wiring diagram online is still not happening. Why are
mfgrs. so cagey about giving out this information? The furnace at my
old place was nice, just had a terminal on the control board marked
"HUM." and a few minutes with a multimeter revealed that that was 120VAC
that was only live when there was a heat call and the blower was
running, et voila, problem solved. This one, not so much.

nate

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