On 11/23/2014 3:27 PM, Hongyi Kang wrote:
On Saturday, November 22, 2014 9:57:48 PM UTC-5, Tony Hwang wrote:
Hi,
Usually furnace control board has terminals marked "HUM" meaning
humidifier hook up there. Simply humidifier solenoid needs 24V AC
in series with humidistat. When humidity is called for contacts in the
humidistat makes supplying the 24V AC power to the solenoid. Aprilaire
package comes with a small 24V AC transformer for this purpose. In case
there is no "HUM" terminals. Then power source has to be tied into
blower power utilising that transformer. Turning fan on does not start
humidifier? you better call the service tech and ask him to make it work
like it should. Being a retired EE I always tell HVAC service techs
leave electrical part to me, don't bother with it. Once I teased a guy
who installed my high efficiency furnace and a/c for an upgrade, I asked
him to install wireless thermostat I got, he did not want to saying he
never installed one. I wish I were your neighbor, I could straighten
things out for you like nothing. Is your name 姜? My BIL
who is HVAC commercial estimator, mechanical engineer's name is 姜大薰.
Come to think of it, maybe they made the humidifier to come on when heat
comes on which is not ideal.

Hi Tony, sorry I didn't reply earlier, passed out with my crying son last night XD. I will definitely ask the service tech about hooking the unit up with blower power. Haha if you were my neighbor it would be a lot of fun, cuz I've always been interested in EE, but I'm a bio major. My last name is actually 康, not sure if the character displays fine on your screen though...


If the three of us were there in person,
we'd had it fixed by now.

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Christopher A. Young
Learn about Jesus
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