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-   -   Armstrong furnace how to wire humidifier (http://www.diychatroom.com/f17/armstrong-furnace-how-wire-humidifier-89642/)

doublewide6 12-14-2010 08:41 PM

Armstrong furnace how to wire humidifier
 
I want to hook up a humidifier to my armstrong furnace, I don't know how to wire directly to the 24volt terminals in the furnace, so that when the heat kicks on, so does the humidifier. Can anyone help me out?
http://s1196.photobucket.com/albums/aa414/doublewide6/

hvactech126 12-15-2010 06:45 PM

what humidifier do you have brand and model number? can you take a picture of the control board?

geothermalpa 12-15-2010 08:40 PM

Wire it to the G terminal so it comes on with the blower. http://geothermal-pa.com

doublewide6 12-16-2010 06:20 AM

My furnace is an Armstrong
Model EFC20LAA-1A
Serial No. 6005H19337
Voltage 240/208

Honeywell HE225DG115 TRUE IAQ By-pass Humidifier


The pics of the wiring schematic is on my first post in this thread. Thanks for all your help. DW

hvactech126 12-16-2010 08:23 PM

http://www.alpinehomeair.com/related...de%2001.10.pdf

see page 11

doublewide6 12-16-2010 08:50 PM

Thanks for the manual. I looked inside the furnace, but can't determine where the 24v connection would be. Do you know if this humidifier will turn on and off when the furnace turns on and off, if I have it plugged in to a 120 wall outlet separate from the furnace? Thanks

hvactech126 12-16-2010 09:30 PM

it would be on the control board located in the blower compartment. the model number of hum that you gave me was for a bypass unit. It should not need 120v other than for the transformer.

doublewide6 12-17-2010 06:20 AM

Quote:

Originally Posted by hvactech126 (Post 552410)
it would be on the control board located in the blower compartment. the model number of hum that you gave me was for a bypass unit. It should not need 120v other than for the transformer.

I am figuring if I can't hook it directly to the furnace board I will use an outlet to plug it in. Is there anywhere I can get a picture or schematic of the location of the 24V transformer? Thanks again for helping.

hvactech126 12-17-2010 07:24 AM

Quote:

Originally Posted by doublewide6 (Post 552539)
I am figuring if I can't hook it directly to the furnace board I will use an outlet to plug it in. Is there anywhere I can get a picture or schematic of the location of the 24V transformer? Thanks again for helping.

there should be two terminals on the board one labeled HUM H and one labeled EAC H ....if you have hum on board then use that for the hot leg of the high voltage side of the transformer and take your other leg (common to a neutral post on the control board. If you don't have HUM then you can use EAC

doublewide6 12-17-2010 09:43 AM

hvactech,

I really appreciate your effort and help in this matter. I'm pretty good with home wiring and repairs, so I think I can handle this. I am going to go home and try to locate the terminals you are speaking of. I might post a picture or a video for you to check out if I can't find the exact terminals you are speaking of. Once again I will keep you posted and I appreciate you taking the time to help me. Thanks DW

doublewide6 12-17-2010 05:16 PM

HVACtech,

This is a video I was not able to find any HUM H or EAC H Neither are on the wiring diagram. Please take the time to see the video and let me know what you think. Thanks again for your needed help. DW

http://www.youtube.com/watch?v=3-sBn5JXl8Y

hvactech126 12-17-2010 05:31 PM

do you have a heat pump? If you do then please tell me what terminal designations are in your t-stat.

doublewide6 12-17-2010 07:23 PM

Thermostat Indoor Unit Outdoor Unit
Red Red Red
Yellow wire nutted Yellow
Orange wire nutted Orange
White Black + White +Brown White *************edited**************
Green Green ------
Blue Blue Blue

These are the wire nuts on the outside of the furnace that connect the thermostat to the furnace + the heat pump.

I do have a heat pump. Here is how it is wired up. The Thermostat and outdoor unit have 20 gauge wire and the indoor furnace has 14 gauge tied together with wire nuts.

The following is what I found behind the Thermostat:

W2 White
G Green
B ------
O Orange
Y Yellow
R Red
C Blue
E Black

hvactech126 12-17-2010 07:32 PM

1 Attachment(s)
Do you have any extra wires going to thermostat from air handler? If you do hook it to B...

doublewide6 12-17-2010 07:57 PM

Thanks for the quick response.

All wires going from the thermostat terminals do wire nut to the indoor unit. However there is one extra wire not in use. It is a brown 20 gauge wire it runs from the thermostat to the furnace, but not connected on either end.

********* I edited posting #13 please see the wiring correction****************


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