8 terms

Operation of a by-pass humidifier

by-pass
STUDY
PLAY
Step 1
the furnace conditioned air blower must be on to get moisture into the conditioned space
Step 2
the bypass damper must be open for winter operation
Step 3
humidistat calls for humidity
Step 4
a solenoid valve on the water line to the humidifier is energized and opens and water drips down over a media pad
Step 5
a percentage of supply air is routed through the humidifier and the warm supply air will absorb the water dripping down the media pad
Step 6
this warm moist air will then be routed to the return air side of the furnace
Step 7
the return air is then sent through the furnace and into the conditioned space
Step 8
humidistat is satisfied and de-energizes the water solenoid valve
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