Electrical installation
Electrical installation
This humidifier is intended to be wired directly to the integrated control panel on your furnace. The electrical tap will provide power to the humidifier whenever the circulating air blower is in operation.
Read the instructions in the furnace installation manual carefully before attempting installation or operation of this humidifier. Failure to follow these instructions may result in improper installation and therefore, void the manufacturer’s warranty.
1.Remove the cover from the junction box in the furnace jacket.
2.Connect the humidifier input leads to the two (2) leads that run to the furnace blower motor. This connection provides for the automatic operation of the humidifier during the heating season.
3.The humidifier will only operate when the furnace blower is in operation.
4.It is recommended to install a humidistat (provided with model 707U) in the system to provide optimum performance when continuous air circulation is desired.
5.If a humidistat is not used in the installation, install an ON/OFF switch in its place. This provides a simple, yet effective, method of turning the humidifier off during the summer months when humidification is not desired.
WARNING 
Improper electrical wiring can cause personal shock, injury, or property damage. It is required that the unit be installed by a properly qualified HVAC technician or electrician, following NEC and any other local codes.
Wiring diagram for humidifier installation - Return Duct Installation
Furnace wiring connection
To Blower
I n p u t P o w e r
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