Fig. 1. Typical humidifier installation locations.
Selecting Water Supply Location
Use either hard or soft water in the humidifier and either hot or cold water. The water flow rate, with the
humidifier running, is 3.5 gal/hr. (13 liters/hr.) to flush the pad and provide moisture for evaporation.
Make sure that the 20 ft (6.2m) of feed water tubing provided is adequate to connect the water supply (saddle
valve) with the humidifier solenoid valve
Locating Closest Floor Drain
Select location with access to a floor drain to provide drainage for air conditioner condensation and humidifier
drainage.
If you do not have a drain available, we recommend that you install the Honeywell Whole House Drum or Disk
Humidifier. Make sure that the 10 ft. (3.1m) of drain tubing is adequate to reach from the humidifier drain
connection to the floor drain.
Selecting Location for Humidistat
• Select a location for the humidistat on the return plenum or on the wall in the living space.
Mounting on the return plenum is the easiest installation for the control wiring circuit. For return duct
mounting, the humidistat should be mounted upstream from the humidifier or bypass so that it is properly
sensing the relative humidity of the living space. Locate the control at least 8 in. (203 mm) upstream from
the humidifier in the return air duct. (See Fig. 2.)