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Installation tips:
Step 1: Turn off power to furnace and shut off water valve that supplies water to the humidifier.
Step 2: Disconnect the 2 wires attached to the solenoid valve.
Step 3: Unscrew the inlet and outlet water compression nuts with a 1/2" and a 7/16" wrenches.
Step 4: Use a Phillips head screwdriver to remove the old valve from the humidifier.
Step 5: Screw the valve and reconnect the water lines . Follow the arrows for flow direction.
Step 6: Reattach the wire connections. The valve uses AC voltage.
Step 7: Turn the power back on and open the water supply valve.