Humidifiers and Dehumidifiers - HE220A and Lennox G26

Trying to figure out how to wire this up efficiently. I purchased the Installation kit, which I'm beginning to think was a big waste of money. I'd like to wire it so that whenever the blower comes on, the humidifier starts up, which if I could do, I'm assuming would make the sail switch unneccesary?

I've got an ACC terminal on the Lennox circuit board, but this is 120V supply, correct? The humidifier only requires 24V.

Can I just hook the humidistat and humidifier to the low-voltage connections at the bottom of the Lennox Circuit board, or is the transformer necessary? Thanks for your help.

I've got an ACC terminal on the Lennox circuit board, but this is 120V supply, correct? The humidifier only requires 24V.
That is correct, there is a transformer that comes with the humidifier itself, and that needs to be used on the ACC.


Can I just hook the humidistat and humidifier to the low-voltage connections at the bottom of the Lennox Circuit board, or is the transformer necessary?
I would not advise it.. System may act up on you if you "steal" the power off the t-stat connections.

That is correct, there is a transformer that comes with the humidifier itself, and that needs to be used on the ACC.


Okay, cool. That makes sense. My concern is the stupid bulky transformer that was supplied that needs to be plugged directly into an outlet. And I'd rather not have to cut extra holes in my ducts for something that is not necessary, like the sail switch. So the brown wire coming off of the ACC should be hot only when the blower is active, right?

I've already got a make-up box with a switch installed on the furnace, so I could replace that w/ a switch/outlet combo, connect the brown wire from ACC to one hot terminal on the outlet, and that's where I get stumped 'cause I've only ever had to connect things with a minimum of 2 wires. My gut says run a white wire from the 120V feed in the make-up box to the outlet, but I don't want my gut to be responsible for blowing up my house.

Thanks for your help thus far. Any ideas on how to go about it from here is appreciated.

. My concern is the stupid bulky transformer that was supplied that needs to be plugged directly into an outlet.
Didn't it come with a hard wired type transformer?


So the brown wire coming off of the ACC should be hot only when the blower is active, right?
Correct.

My gut says run a white wire from the 120V feed in the make-up box to the outlet,
You are fine doing that..

Didn't it come with a hard wired type transformer?

Nope. Where can I get my hands on one of those?

Okay, so assuming I can get power to the new outlet when the blower is active, I've got one last question (for now). Since the outlet now acts as the power source and the switch, the wiring diagram that came w/ the install kit is (along with the rest of the kit) is completely worthless. Instead of running from transformer to sail switch to humidistat to solenoid, I've only got the transformer, the humidistat, and the solenoid. How do I go about wiring those w/ the 2-pair low voltage wiring? Or should I just try to get a hard-wired transformer? Thanks again.

Nope. Where can I get my hands on one of those?
Door bell section.


I've got one last question (for now). Since the outlet now acts as the power source and the switch, Instead of running from transformer to sail switch to humidistat to solenoid, I've only got the transformer, the humidistat, and the solenoid.
Correct.

How do I go about wiring those w/ the 2-pair low voltage wiring?

http://img528.imageshack.us/img528/844/24humnorelayyf2.jpg

I don't have a wire nut drawn into the drawing on the red wire between the wire going to the humidistat, and wire going to HUM (will be your transformer)

I don't have a wire nut drawn into the drawing on the red wire between the wire going to the humidistat, and wire going to HUM (will be your transformer)

Okay, just to make sure I'm understanding the diagram, red 24V goes from humidistat to xformer, and white 24V goes from humidistat to humidifier, then from humidifier to C on my Lennox circuit board? (there's already a connection there from my thermostat)

I took a look at the hard-wired transformers online, and I understand connecting the 120V ACC to 120V black on the xformer, but what do I connect to the 120V white terminal? Also, if I connect 24V red to 24V terminal on the xformer, what do I connect to the other 24V terminal.

Really appreciate all your help Jay.

then from humidifier to C on my Lennox circuit board?
No, that wire will go to the other screw that is on the transformer.

but what do I connect to the 120V white terminal?
Really appreciate all your help Jay.
Anywhere you can find the 120 v neutral/common side of it.

Anywhere you can find the 120 v neutral/common side of it.

Looking at the circuit board on the furnace, it's a G26, but does not have the surelight control board, rather the BCC2-3.

Link to the G26 manual page 15:
http://hvacpartsshop.net/G26_Series.pdf

All Neutrals are in the upper left. I'm seeing HSIN free, can I plug into that for my 120V common to xformer?

All Neutrals are in the upper left. I'm seeing HSIN free, can I plug into that for my 120V common to xformer?
Yes, You can use that area for your transformer.

Yes, You can use that area for your transformer.

Jay,

Ran out of time last weekend, but I wanted to give you an update since you've been such a big help. I got a honeywell hard-wired xformer (probably the one that used to ship w/ the 220) and wired it up. It works like a champ -- well the electrical anyway. I'll have to keep an eye on the RH to see if it's actually doing its job.

To quote "Analyze This/That"

"You, my friend. You're good."

Thanks for all your help.

Glad to hear you are up and going.

It may take a few days to get the RH up since the house is dry.

Good quote there.

:D