Humidifiers and Dehumidifiers - HE265A, I need some advice on placement

:coffee: I purchaced a Honeywell HE265A and like alot of others I am having problems. Thier instructions are not very descriptive. I reviewed other threads and I have figured out most of it. However, Placement is still a big question for me. My return is not wide enough to mount the unit. Where else can it be mounted? There was a humidifier in the cabin when I bought it, (it was broke) can I mount it in the other location. It is just below the heated air duct.
Also I have a new heater and it does allow hooking HUM directly to the unit. There are three labeled placement screws. W1, Y2, HUM. Where and which wires go on them? Thank you

I have one more question. Is the hookup on the furnace that is labeled HUM 24 or 110. Should I use the transformer?
Thanks Again

This can be placed anywere on the return or supply trunk.

What mode/brand of furnace did you get?

99% of the the hum is 110volts, so yes, you'll need a transformer on it.

Don't use the W or Y. that is for t-stat hook up.

Thanks for the information. Since I must plug into the HUM screw only, where do I plug my neg wire?

I finally have it mounted, water line is hooked up also, All that is left is the power

Not knowing what brand off hand of furnace you got, I know some says tie onto the Common or Nutral side of the line there maybe bars or tap to go onto.

see next post

I believe I have got it figured out.
The Bryant 352 t-90 furnace diagrams on the cover show a transformer built in between the two circuit boards. There are several screws to add on extras to the unit. One is marked COM24V. I believe that to be the neg hook up. It already has one white wire in it. Can I put the neg for the Humidifier in that as well? And behind the row of screws there is a a plug that reads HUM the diagram calls it a 24V humidifier plug. I will plug the hot into that. I shouldnt need the transformer now, so If I have this right, the negative will go directly to the humidifier and the HOT wire will pass through the HSTAT and then go to the humidifier. Does that sound correct, or am I way off?
Honeywell doesnt help at all, I think they try to keep it so you have to hire a contractor. I dont think it should be as hard as it has been but I dont want to ruin a 4000 dollar heater because I am too stubborn to hire a prof.
Thanks for your help.

I turned everything on the way I described. So far so good. Water is runnung out through the drain hose while the heater is running and it stopped when the heater shut off. I am gonna watch it for a while but it seems to be working fine. :D

Thanks for the update. Sorry I wasn't here to reply right away with your post. Glad to see you figured it out that it was 24 volts. On mine, it's 120v on the hum screw.