Aprilaire 700 wiring??


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Old 11-18-07, 06:20 PM
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Aprilaire 700 wiring??

I am installing an Aprilaire 700 on a Goodman GMNT furnace. From the humidifier control I have two leads for the 24v source, labeled "R" & "C". On the circuit board in the furnace I have located only one terminal labeled "24vHUM". If one of the leads (R or C) connects there where does the other connect?
 
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Old 11-18-07, 07:05 PM
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Originally Posted by DoItYrslfOrDie
From the humidifier control I have two leads for the 24v source, labeled "R" & "C". On the circuit board in the furnace I have located only one terminal labeled "24vHUM". If one of the leads (R or C) connects there where does the other connect?
You can wire to R and C for 24 volt, but you must use a sail switch, or A50 relay.

You can wire one wire to 24vHUM and other wire to C, with this the humidifier will come on when the burner starts. No relay or sail switch is needed.
 
 

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