Aprilaire 560 Humidistat Installation instructions

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Old 11-01-06, 07:03 PM
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Aprilaire 560 Humidistat Installation instructions

I have a Aprilaire 560 humidifier with a humidistat mounted onto the return air duct.

1.)Does anyone know where I can get the installation instuctions for this humidistat?
I would like to find out what the A/A terminal is and what the jumpers inside the humidistat are for.

2.) Currently the humidifier seems to get triggeregd by a current sensor inside the furnace. I believe it senses the fan. Does this make sense? Oftentimes I have the fan always on and I was wondering if the humidifier should run without heat....
 
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Old 11-01-06, 09:24 PM
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http://www.iaqsource.com/pdf/56_install.pdf

That is fine when you run fan only to have the humidifer going.. I run my fan 24/7, and the humidifer will run as needed.. not wait till heat cycle.

never heard of the a/a on this... Jumper maybe is a manual mode instead of outdoor sensor?
 
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Old 11-02-06, 07:12 PM
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The closest picture of my humidistat is this:
http://www.ontimemall.com/media/56.jpg

There is 24AC terminal, an outdoor temperature sensor, and this A/A terminal. Could the A/A terminal going to the humidifier? The confusing part is that the current sensing module has two wire sets going out to the humidistat and possibly to the humidifier. Can't really tell due to the cable routing. Does such cabling make sense?

What would I need to change if I decided not to run the humidifier when not heating? Could I simply switch the current sensor to an other fan wire?
 
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Old 11-02-06, 09:02 PM
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I looked everywhere, and I can't find anything stating the A-A.

I'd call Aprilaire, and see what say.
 
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Old 11-05-06, 11:58 AM
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Thanks for looking.
What would I need to change if only would like water flowing during a heat cycle?
Is it possible to change the current sensor to a different wire?
Currently it is on the white which seems to be the common.
 
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Old 11-05-06, 03:17 PM
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You can move it over to red or yellow (Depends what speed the blower is used in heating). Only down fall of that is if you run the fan "ON". it not going to work in that mode. So that's why it's on Common wire, it works in both heat and fan "ON".

Why not leave it at that? I run my fan "ON" all times, and also the humidifer can keep up with the home as needed. and not fall behind if you have little call/short cycle of heat.
 
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Old 11-05-06, 07:01 PM
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Thanks. My only concern was the water consumption and the possibility to end up with condensing water.
 
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Old 11-05-06, 07:56 PM
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You not going to save any more water just moving the wire..

In the summer, just turn the humidstat to off.
 
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Old 11-18-06, 04:49 PM
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As a test I moved the current sensor from the white to red. The result: the humidifier will not kick in anymore.
Tried orange and black with the same result. The only one I didn't try was the blue one (cool),
Does the sensor have a flow polarity, or what else could be wrong?
 
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Old 11-18-06, 05:42 PM
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The sensor will only work when the blower is running..

Red is heat speed.

Blue is cool speed.

the other two are not used unless blower needs to go slower in cool or faster in heat.

Put it back on the white wire, and forget about it. It is fine for it to run when you run the fan ON. It will keep up than just waiting for heat to come on.
 
 

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