Product review (4 stars): Product is good, but a couple installation suggestions to include with ...
Product is good, but a couple installation suggestions to include with the instructions.  First, the tubing has to make a very tight turn in humidifier model 560; so, recommend heating the tubing with a blow dryer to make it easier to install.  Second, it might not be obvious that the strainer screen included with the kit goes on the other (feed) side of the solenoid. Straighten a paperclip and then make a small hook at the end (with needle nose pliers)  to remove the existing strainer screen.  Also recommend replacing the tubing every 3 to 5 years or so.  I did not discover that the tubing in my 560 humidifier split at the tight bend inside the humidifier until I went to replace the a/c air filter and found the a/c filter to be wet along with other things under the blower fan.  So, I now plan to replace the tubing on regular intervals.  The old tubing was very brittle and broke easily.  If you too find water at the bottom of your heating unit, please be sure to turn off power to the unit before cleaning up the water.