Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Would like to replace an old 560 with the 600.  Would it be a clean swap with both wiring and duct installation Cutout?
Document: I purchased this humidifier to replace on old Skuttle drum style humidifier on my furnace that had a broken float. I installed the unit myself and would rate the difficulty to install at about 3.5 out of 5. Overall installation took me about 4 hours. The control wiring was time consuming as there are quite a few connections to make. The parts list in one of the other reviews was also very helpful.
I purchased the aprilaire model 600 to replace my old sears humidifier on my new furnace. Three months ago I had a new coleman echelon furnace and air conditioner istalled and wanted a new humidifier to replace my 12 year old sears drum type unit. After some research I picked the Model 600 with automatic digital control.First, if you are not handy or comfortable doing electrical wiring, hire a professional to install the humidifier.
Not that the installation is very difficult or confusing but it is time consuming. there is some duct work, electical and wiring hook ups. Once installed it could'nt be easier to use. With the digital control you set the humidity level, and the unit will adjust itself with changes in the outside temp., set it and forget it! Maintenance is just as easy, replace the media pad once a year, a five minute job if you take your time! I would'nt hesitate to recommend this unit.
I really like this humidifier. It took me a couple of days and 3 trips to my hardware store to finally get everything to install it.The installation went well and I didn't have any rear problems with the installation except the time factor. You have to study the wiring installation a few times to wire the Humidstat but all went well. The unit ran well first time running. I'm satisfied with the Aprilaire 600.The reason I gave it 4 stars rather than 5 was the absence of mounting screws and wiring.
The same place the thermostat gets it. There is an (R) wire that goes from the furnace to the humidistat, just like you have with the thermostat. *Before discovering it periodically turned on the blower to sample the air, I was initially concerned that the RH in the duct would be artificially high because the sensor is 18" upstream from the humidifier and colder, and thus it would never trigger the blower.
It's a great unit with one exception, the controller. If your like me and have an old humidifier controller on the first floor and the humidifier itself in the basement, than hooking the new controller up is an issue unless your an HVAC wiring expert and can run the outside humidity sensor from the first floor controller to the outside. The direction are great until you get to the controller. Good news though, the old Lennox humidifier controller works perfect with this unit.
I installed it myself in less then a day. Was a little tricky wiring it to my thermostat control, I didn't use the included humidistat. Once I got through the manual for my thermostat and furnace wiring and found the right connections it was pretty easy to wire up. The only reason I gave it four stars is because I would prefer the On/Off damper to seal a little bit better, in the summer I'll put a piece of plastic over the output duct to seal it better for the cooling season.
This replaced our old humidifier which was broken. This has changed everything in our house. No more getting shocked when I reach for the light switch! Also - my husband had no trouble installing it - low level wiring for the auto panel was a breeze. Of course, he has heating and cooling background. We love this item and would get it again.
I recommend 1/4 inch COPPER tubing for hot water supply as for the PEX you will need to buy additional plastic rings and copper inserts. I installed my Aprilaire 600 a week ago and now it works great. My family members don`t have dry noses in the morning anymore. Definitely would recommend this product but you should be very careful with the installation as the included instructions are not Ikea type DIY, but feasible.
Installation of the Aprilaire 500A took 7 hours (including two trips to the hardware store.) The wiring directions were clear, but good overall instructions would have been appreciated.The installation hardware list (see the other review) is great! I needed extra 18-2 thermostat wire to tie in the outside temperature probe. The leads were only 3' long, and my furnace is in the middle of the house. Make sure you have wire nuts for small wires.
Answer: No, it will fit on the furnace but the control box and wiring is all different. I hated the unit, it is way overkill on the controls and the wiring is very complicated. It wants to be able to turn the furnace fan on if the humidity is low even if the temperature in the house is OK. It caused me lots of problems. Also you need to be able to run a temperature probe to the outside so that it can automatically adjust humidity level.