Annual Maintenance; Annual Summer Shutdown - Aprilaire 110 Owner's Manual

Water used in homes contains varying amounts of minerals. The residue
remaining as a result of hard water evaporation is primarily calcium and
magnesium components and is usually quite hard, scaly, and dense.
Residue from softened water tends to be soft and fluffy and has a greater
volume than hard water scale. The service life of a Water Panel
evaporator may be extended by using hard water, but in either case, the
Water Panel evaporator is usually changed once a year.
In the drain-equipped models, most of these solids are effectively
controlled by flushing them down the drain.
In the Models 448 and 445 Aprilaire Humidifiers, these solids will build up
on the evaporator surface, in the reservoir and pump section. This is why
proper maintenance is important and necessary. Service hot water, 140°
maximum, is recommended with drain type units for increasing capacity
and for heat pump applications.
VI. ANNUAL MAINTENANCE
For best performance, we recommend that you replace the water
panel evaporator in your Aprilaire Humidifier annually. See
individual model instructions for additional maintenance.
To purchase a Water Panel:
• Call the installer of your Aprilaire Humidifier.
This information is often found on your equipment.
• Call your heating and air conditioning dealer.
• Use our "Dealer Locator" at: www.aprilaire.com
• Look in the Yellow Pages under Humidifying Apparatus
or Heating & Air Conditioner Contractors.
• If none of the above is successful and you still need
information, please feel free to write us.
VII. ANNUAL SUMMER SHUTDOWN
For Models 220, 224, 440, 445, 448, 558, 560, and 568 close the bypass
damper in the bypass pipe. For the Models 445 and 448, empty the
reservoir.
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