Question about Aprilaire Humidifiers
I have a recently installed Lennox EL296UHV furnace and an Aprilaire 760 with a manual humidistat. During the annual inspection, the technician said that the 760 needed a new control board and disconnected the unit two bare red and white wires from the furnace control board before I could see where it was wired in. They wanted to replace the unit with a new one at a cost of several hundred but I opted to buy and install the board myself having replaced such things before. I just want to make sure to connect the wires to the correct locations on the board.
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Posted on Jan 02, 2017
it is best to use a seperate transformer for the hummidifier, but in some cases you can use the low voltage t-stat wire that runs your furnace, you will need to have one wire run to common, and the other to the heating side of your low voltage, normally its the red wire hooked to the w circuit of your terminal board, if you do decide to go with an extra transformer, make sure you you have it wired to bring on the humidifier only when the unit calls for heat, hope that helps
Posted on Jan 20, 2009
I just solved a problem with mine today. One of my low voltage power wires to the humidity control had a bad connection. I reconnected it and I could again hear the solenoid valve clicking as I adjusted the dial control.
I found the problem with a voltmeter: there was voltage at the power terminals on the humidity control terminal board, but there was no voltage at the solenoid valve terminals. It was hard to push my big wires into the terminal board, but I finally secured the connection!
Posted on Jan 28, 2009
Maybe I can help. this is 24v so it doestn't matter which wire goes where so here goes. 2 wires from humidistat go to furnace, split one of the wires(not both) so they reach the yellow wires on the humidifier. with marettsconnect one of the split wires to one of the yellow wires. do the same to the other split wire and yellow wire. what you should get is one wire from humidistat to furnace then one wire from humidifier to humidistat and one from humidifier to furnace. hope this helps
Posted on Feb 04, 2009
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