Humidifiers and Dehumidifiers - Aprilaire 600 Installation Questions

All,

I wanted to install an Aprilaire 600 humidifier in my house. Just want to confirm a few things.

1) In you look at the overall.jpg(link below), I have marked two places on the vents where I think the humidifier should go. Does that look fine? I believe It is above the AC coils(if it matters).

2) In you look at the overall.jpg and drain_pipe.jpg (link below), I have circled the floor drain pipe that is used by the AC. Can I tie into the same for the humidifier drain? I would use the top part of the pipe. The reason that I ask is because I noticed some people saying that the AC pipe can get clogged. Also, some people are saying that the floor drain should have a trap. Does anybody know where to look for the trap?

3) I was thinking this for the wiring:

HUM to W only. --> I only want the humidifier to run when the heater turns on, not the fan. Com to Cf on control, Run a jumper from C to Cf. Then R from furnace to R on control. Does that sound correct?

4) I have cpvc pipe installed, so I wanted to T the hot water line. So, it is fine to cut it with a hack saw and then install a T? You can see the hot and cold water line in the water_pipe.jpg(link below). Also, would I just run the new line perpendicular to the existing one and then an elbow with another pipe leading straight down to the humidifier?

5) Can IAQ stat with the Aprilaire humidifier? I know the IAQ offers more options and control.


Sorry for all the questions, but trying to get it right the first time.


Overall Image - Yfrog - 1005087je6.jpg (http://yfrog.com/37overallrj)

Drain Pipe Image - Yfrog - wc3scrnshot031309154400.jpg (http://yfrog.com/6udrainpipej)

Water Pipe Image - Yfrog - waterpipe (http://yfrog.com/3ewaterpipej)

Thanks,
Ashish

I forgot to mention that I have a Payne PG9MAB furnace.

Regards,
Ashish

I'll get with you on Thursday.. it's getting late for me.

1) In you look at the overall.jpg(link below), I have marked two places on the vents where I think the humidifier should go. Does that look fine? I believe It is above the AC coils(if it matters).
Looks good, are you putting the unit itself on the return, and bypass above the A-Coil? I would suggest doing that.

2) In you look at the overall.jpg and drain_pipe.jpg (link below), I have circled the floor drain pipe that is used by the AC. Can I tie into the same for the humidifier drain? I would use the top part of the pipe.
No, I would not use the top part. Since I'm suggesting to mount the humidifier on the return, run the PVC pipe around the back and down to the floor drain.. A trip is not needed.


3) I was thinking this for the wiring:

HUM to W only. --> I only want the humidifier to run when the heater turns on, not the fan. Com to Cf on control, Run a jumper from C to Cf. Then R from furnace to R on control. Does that sound correct?
Sounds good.

4) I have cpvc pipe installed, so I wanted to T the hot water line. So, it is fine to cut it with a hack saw and then install a T?
Yes, make sure you clean up the cut so you don't get any shaving into the line.

Also, would I just run the new line perpendicular to the existing one and then an elbow with another pipe leading straight down to the humidifier?
You can do that, are you putting on a shut off valve before you go down to the 1/4" supply line?


5) Can IAQ stat with the Aprilaire humidifier? I know the IAQ offers more options and control.
Yes, it can. Aprilaire's control is taken out of the picture.

Looks good, are you putting the unit itself on the return, and bypass above the A-Coil? I would suggest doing that.


Yes I am putting the unit on the return return side(located on the right hand side in the overall image). I will put the bypass, which will supply the air to the supply side.


No, I would not use the top part. Since I'm suggesting to mount the humidifier on the return, run the PVC pipe around the back and down to the floor drain.. A trip is not needed.


Just wondering, but why is the top part not good? Can you please look at the below image, to see what I want to do. The line I drew shows how the humidifier drain pipe will be routed to the drain. Are you suggesting that I route the humidifier drain pipe on the other side? Also the reason that I wanted to use the top part is because the pipe hole is already there, I just need to remove the cover. But, if you think it is not right, please let me know.

http://img11.imageshack.us/img11/6541/overall2.jpg



You can do that, are you putting on a shut off valve before you go down to the 1/4" supply line?


I am sorry, but I do not understand. Are you saying that I need to put a shut off valve at the supply(hot water line)? Why is that necessary? Can you please look at the below image to see the path I am planning the water line to follow.

http://img193.imageshack.us/img193/6728/waterpipe2.jpg


Again thanks so much for your help.


Thanks,
Ashish

I will put the bypass, which will supply the air to the supply side.
It's not supplying the air to the supply, the air is going to come from the supply side, go over the pad, and into the return.



Just wondering, but why is the top part not good?
That cap is for cleaning/service of the drain line from the A/C.


Are you suggesting that I route the humidifier drain pipe on the other side?
Yes, or you can run it in front of the Coil case, then drop it down the side. and "T" on to the line.




I am sorry, but I do not understand. Are you saying that I need to put a shut off valve at the supply(hot water line)? Why is that necessary?
Yes, you need a shut off valve between the main line and the humidifier. That way you can shut the water off to the humidifer if you need to service it/replace the filter on it, and shut it down for the summer. Are you going to use copper line or the pex? (Plastic)

I was out of town for a few days. Thanks for the response.

It's not supplying the air to the supply, the air is going to come from the supply side, go over the pad, and into the return.


Sorry that is what I meant.


That cap is for cleaning/service of the drain line from the A/C.


Oh, I did not know that. Then, I will put a 'T' near the bottom of the drain pipe. There is already a 'T" there, but I will put another one above it. Does that sound fine?



Yes, you need a shut off valve between the main line and the humidifier. That way you can shut the water off to the humidifer if you need to service it/replace the filter on it, and shut it down for the summer. Are you going to use copper line or the pex? (Plastic)


I will install the shut off valve. I was thinking of using a brass ball valve. Does that sound fine?

Also, I was thinking, since I have cpvc pipe now, I would use pex for the water supply to the humidifier and for the drain. Does that sound ok?


Once, I get your response, I will try to install the humidifier next weekend. At first, I will make the cuts to the hot water supply and drain pipe. After that is all done, I will make the wire connections to the circuit board. And finally, I will cut out using the template and mount the humidifier.


Thanks,
Ashish

I was out of town for a few days. Thanks for the response.
No problem.

There is already a 'T" there, but I will put another one above it. Does that sound fine?
Yep, you are good to go.


I will install the shut off valve. I was thinking of using a brass ball valve. Does that sound fine?
Yep.

Also, I was thinking, since I have cpvc pipe now, I would use pex for the water supply to the humidifier and for the drain. Does that sound ok?
I'm not a big fan of non-copper supply line, I just hear one too many events of the line coming undone at the compression fittings, I'd strongly suggest copper. I suggest the PVC pipe for the drain.