Humidifier Relay For Nest

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Everything worked great until 3 months ago when i got a fancy new high. Used this relay with a nest 3rd gen thermostat to control a furnace humidifier that uses a separate controller module to pulse the solenoid injector open for 4 sec and closed for 30 sec. The humidifier transformer is fed from the furnace controller, and i believe that circuit is only energized if the heat and fan are both on. Also in that circuit is the relay so that.

For example, you can use the. Connect the wires that used to go to hum 1 and hum 2 on oldthermostat to the n/o terminals on relay. When nest calls for humidifer, relay will be energized through this. Hire the best humidifier repair services in orangevale, ca on homeadvisor. Compare homeowner reviews from 4 top orangevale central humidifier repair services. When the nest thermostat calls for humidity, 24v ac is applied to the humidifiers internal fan relay coil as well as the solenoid valve coil. Applying 24v ac across the fan relay coil closes. Hire the best humidifier repair services in el dorado hills, ca on homeadvisor. Compare homeowner reviews from top el dorado hills central humidifier repair services.