Aprilaire 700A on Goodman Furnace?

kcrossley2

I'm getting ready to install and Aprilaire 700 Humidifier on a Goodman (Janitrol) Furnace. My plan is to pull AC power from the furnace an install a 120V outlet so I can plugin the 3-prong external power cord needed for the powered fan. Everything else will wire directly to the Goodman furnace. I'll also be pulling water from the hot water pipe above the hot water heater.

I've included some images of my setup. My plan is to install the Aprilaire 700 above the furnace on the supply side. Here are a few questions I have.

1. How is the A coil configured on this furnace?
2. I take it I have to cut the insulation back to mount the humidifier. Should I cut the insulation the same size as the humidifier opening?
3. I've noticed that some installers place a bead of clear caulk between the humidifier and opening. Should I do that?
4. Where should I mount the 120V outlet?
5. Is there anything else I need to consider?

Thanks,
Kelly

diyorpay

Really neat/clean installation.

Do you have a drain for humidifier?

Hixheat1

Your humidifier has it's own transformer, if you use your furnace trans former to make circuit you will blow it's transformer or other bad things. Do you have the instructions if so I can help clarify what you don't under stand. And yes seal around the mounting bracket. This unit drains a lot of water if you live in area that freezes could create a ice rink.

kcrossley2

I was simply going to put a T on the existing HVAC drain, which is shown in the first photo with the P trap, but that could be a problem since that line simply drains outside. The only other option I have is to tie into the house waste drain by going through the wall and under the crawlspace.

Did I mention that I hate crawlspaces?

Any other drain ideas?

kcrossley2

I found this wiring diagram off of the Internet. The preferred Goodman wiring is shown at the lower right:

I also found this off of the Alpine site: http://www.alpinehomeair.com/related...20Diagrams.pdf

Which wiring method is best?

kcrossley2

I'm getting a little nervous about soldering a T on the 3/4" copper tubing coming out of the hot water heater shown to the left. Perhaps a better solution is to tap into the laundry room through the steel door pictured here. Look closely and you can see a small white hose coming out of a whole in the wall to the left of the door.

That hose goes to an RO filtration system in the laundry room. On the opposite side of it is a 30 gallon trashcan out in the garage where I store water for my aquarium:

What do you think?

Hixheat1

Go to lowes and buy a 3/4x3/4x1/2 shark bite " T" 1/2 cpvc pipe and a 1/2 to 1/4 valve ice maker valve and cpvc glue no soldering required.

Hixheat1

I would use diagram one if your system is not dual fuel

kcrossley2

And tie into the copper pipe above the hot water heater?

kcrossley2

Which diagram, the colored one above or the linked Alpine air PDF?

kcrossley2

Is this what you're talking about? http://www.homedepot.com/h_d1/N-5yc1...atalogId=10053 AND http://www.homedepot.com/h_d1/N-5yc1...atalogId=10053

Wow, those Sharkbites are cool. http://www.cashacme.com/prod_sharkbite.php BTW, I think Lowes sells another brand.

Do you think they'd hold up to the pressure created by the main hot water line? Also, do I need to completely drain my hot water heater before I install the Shark Bite fitting?

kcrossley2

Here's a link to the Aprilaire 700 installation guide: http://www.alpinehomeair.com/related...ns%2004.10.pdf

Thanks for your help Hixheat1.

kcrossley2

Any more suggestions before I begin the install.

Hixheat1

Sounds like your ready good luck

kcrossley2

I just thought of a few more questions.

1. If I wire the Aprilaire 700 correctly, what happens when we use the circulate feature of my Honeywell programable thermostat, which we often do?
2. About how much water does this thing use?