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Selecting a location for the unit
Mounting on face of vertical return duct or side of
horizontal return duct
When mounting your humidifier on the face of a horizontal
return duct, or on the face of a vertical return duct, certain
conditions must be met for its proper operation:
• Mount the humidifier on the vertical or horizontal cold air
return duct.
• Locate the humidifier at least four (4) linear feet upstream of
either the furnace fan and /or filter and any turn in the duct.
This will ensure that condensation does not collect within the
duct and cause oxidation (rust).
• Mount the humidifier at least six (6) linear feet (preferably 10
feet) upstream from any electronic air cleaner. Failure to
follow this recommendation can cause excessive nuisance
arcing and or power supply failure.
• If the duct seams inside the duct are not flat, locate the
humidifier at least three (3) linear feet upstream from the
seam.
• If the humidification needs of the home require more than
one humidifier, each unit should be installed a minimum of (3)
linear feet apart.
• DO NOT use this humidifier on the discharge or warm air
supply side of a forced air heating system. This will reduce the
efficiency of the humidifier and may cause operational
problems.
• DO NOT mount the humidifier in a furnace jacket.
• DO NOT install the humidifier where freezing conditions could
occur.
• DO NOT install on gravity hot air systems.