Humidifiers and Dehumidifiers - Wiring help needed for HE260A

I have Ruud Quiet 80 furnace. Got all the setup completed for water line and humidifier. The only thing that is now remaining is the wiring for the 24volt transformer.

I have got the humidifier on the return side with the by pass going on the supply.

I looked thru the furnace circuit board to setup the transformer but there was no luck.

I have two wires white and Black coming out of the transformer and two black wires coming out of the humidistat.

I am unable to attach the pictures here. Somehow the site is not allowing me. However I can send them by
email.

Can some one help me with identifying the right place for these wires please?

I am a first timer on the humidifier setup. Would really appreciate any support for the electrical setup.

You can send the photo to me... jaymarking at gmail.com

On the board do you know if it's 120 volts or 24 volts where you wired the humidifer to?

Jay, I have just send you the email with pictures @ Jaymarking at gmail.com

1. Control Board
2. Control board diagram
3. Pressure Switch
4. Gas Valve
5. RiteTemp thermostat that I am currently using

I have not started wiring yet as I am not sure what to do.

Looking forward to complete it tomorrow

Note: I do not think I have a HUM on the control board.

Ok, Got your e-mail and thanks for the photo.

I looked at the photo, and I looked at the wire diagram... Odd on the left section, it don't shows the HUM.. on the right section, it does.... I looked at your board's photo and I don't see HUM.. Unless it's under the wires... But, it's not end of the world. YOu can wire the transformer to the EAC on the board.

The EAC is 120 volts and will power up any time the blower comes on.

Black wire from transfromer on that.. White wire to Neutural.

One wire from transformer to one wire on humidistat. Other wire from humidstat to selnoid valve. other wire from valve to transformer.

Would that mean that anytime the blower comes on irrespective of heat or cool?

Is there any other thing that I can do to ensure that I do not have to unplug the wiring in summers?

It will come on in cool as well, but in the summer, turn the humidistat to OFF, turn off the water, and Close the bypass damper (If any on there).

Ok I got your point.

I am assuming that switching off the humidistat is going to take care of not running the humidifier?

Would I still need to shut off the water supply valve and the damper (and yes I do have one).

In addition is there any way I can avoid using the humidistat that came with the HE260A?

I think my thermostat (RiteTemp) has humidity control and if I can use that instead then it will be one single control unit for me.

Thanks for your help

I am assuming that switching off the humidistat is going to take care of not running the humidifier?
Correct.

Would I still need to shut off the water supply valve and the damper (and yes I do have one).
You don't have to.. but I'd advise you to do so.. it keeps the valve in working order, and also less chance of leaks if you are away from home on a summer trip. Damper for sure should be closed off, otherwise, you may incresse the risk of freezing the A/C coil with colder air going back into the system.

In the spring I take my pad out throw it away.. Clean the unit out and tray, and replace with a new pad, and close down the damper.

In addition is there any way I can avoid using the humidistat that came with the HE260A?

I think my thermostat (RiteTemp) has humidity control and if I can use that instead then it will be one single control unit for me.
That t-stat does not if the fan is or or not.. It going to be a waste of water when nothing is running... If you really need to use the t-stat, then the wire hook up to HUM is out, and you need to by a A50 relay, or Sail switch.

I will pass the idea of using the t-stat for now (may be till next winter or till the time it starts bothering me enough).

Before I get going with the plan, one last thing that came to my mind is what if I connect the black wire from the transformer to the heat on the furnace control board? if its a bad thing then pardon my ignorance and review my below plan of action with EAC.

Here is what I am going to do now.

1. Swtich off the furnace circuit
2. Hook up black wire of transformer to EAC and white wire to any closet neutral on the furnace control board.
3. From the 24 v side of the transformer the C goes to the humidistat and the other one to the solenoid
4. Then hook up the remaining wire from the humidistat to the remaining wire of the solenoid.
5. Switch on the circuit and it should work fine from there.

Please review and let me know if this is correct.

Here is what I am going to do now.

1. Swtich off the furnace circuit
2. Hook up black wire of transformer to EAC and white wire to any closet neutral on the furnace control board.
Correct.

3. From the 24 v side of the transformer the C goes to the humidistat and the other one to the solenoid
C to Solenoid valve.

4. Then hook up the remaining wire from the humidistat to the remaining wire of the solenoid.
Wire from transfromer to one of the humidistat wire. Other humidistat wire to valve.

I am assuming that my heat question was a stupid one.

Thanks for clarification on the connections. I will be hooking this up tomorrow and let you know the results.

Thanks for all your help.

I am assuming that my heat question was a stupid one.

This one?
one last thing that came to my mind is what if I connect the black wire from the transformer to the heat on the furnace control board?

I wasn't sure at first when you meant by this.. I now think you mean wire the Transformer to the HEAT tap on the board?? THat is already being used for the blower speed in heat mode.

Jay, I good news is that I have the humidifier working. I can here the solenoid opening and closing too when I move the dial of the humidistat.

Thanks for your support.

Though one thing I am observing is that I have constant water flow in the drain pipe when the humidifier is running.

Is that normal?

To limit the water wastage I have kept the water valve only half open to limit the water flow so that less water gets wasted.

Is that ok?

You are going to get a small stream, and that is normal... That's why they call if flow though... It keeps the pad clean and fresh all times.

You can try the valve shut donw half way.. I done it on mine in the past, and It can't keep up. so I kept it open all the way.

Here is the report out

Today is the 5th day for the humidifier working and my house humidity is now at 36% (started at 20%). So thats the good news.

The part which is unclear is the behaviour of the thermostat. It is set at 69 F and however the current temprature shows anywhere b/w 1 to 2.5 degree over it. :-(

Is it normal or this is something wrong somewhere?