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Old 12-18-2007, 08:03 PM   #1
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Humidifier & Thermostat

I have a new fan powered humidifier (Carrier LFP 1418, I think same as last years 1318) and a RiteTemp 8085C thermostat. The thermostat has the capability to control the humidity.

The humidifier has two wires (both brown) and a sticker on them that states "Caution Do not connect these leads to line voltage" and a standard 110 plug.

Instructions from the RiteTemp:
Connect the humidifier control wire to the H terminal on the new RiteTemp thermostat.

The humidifier instructions:
Shows both leads going to a 24V coil normally open relay (part HN61KQ120) the other two leads on the relay connect to the C and HUM on the ‘Thermidistat Control’.

My question is how do I connect this properly, I want to just use the RiteTemp thermostat to control the humidifier and not the supplied manual humidistat? Do I need the relay that is described in the instructions for the humidifier? Is this relay needed if a 'Thermidistat Control' is being used but not with a different kind of thermostat.


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Old 12-19-2007, 08:04 PM   #2
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One lead from the humidifier goes to "H" on the t-stat and the other to "C" from the furnace.


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