Aprilaire 4655 Humidifier User Manual


 
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Your humidifier is controlled by either an Automatic Digital
Humidifier Control, or a Manual Humidifier Control.
The Automatic Digital Humidifier Control offers two modes of
operation, Automatic or Manual. When in the Automatic Mode,
this system offers the following benefits:
You will receive the optimum amount of humidity so that
your home and its furnishings are protected from the
damaging effects of excess condensation or low
humidity during the heating season. The Control
automatically adjusts your home’s RH based on the outdoor
temperature, increasing the time maximum comfort is
maintained
Simple operation with few adjustments. The Control
eliminates the need to manually adjust the control when
outdoor temperature changes. It also eliminates the need to turn
the dial setting to “OFF” during the summer season.
YOUR HUMIDIFIER OPERATING INSTRUCTIONS
Blower Activation
Digital Humidifier Control Indicator Lights
Set the Blower Activation Switch to “ON” to allow the Humidifier
Control to activate the furnace fan for additional humidification.
Refer to TABLE 3 – Operation Guide. This may be required if
the humidifier is mounted on a heat pump or a furnace with short
run cycles. The humidifier should be plumbed to hot water when
using the Blower Activation feature.
When the Blower Activation switch is “ON”, the Humidifier
Control will turn on the HVAC blower when humidity is required.
In the “OFF” position, the humidifier will only operate if humidity
is required and the HVAC system is operating.
When the Blower Activation switch is “ON”, the Humidifier
Control will periodically turn the HVAC blower on for 3 minutes
to sample the RH of the air.
Automatic Digital Humidifier Control
Your Automatic Digital Humidifier Control works in conjunction
with your heating, ventilating, air conditioning equipment (HVAC)
to control the operation of the humidifier. The control senses
indoor humidity and outdoor temperature and automatically
adjusts the operation of the humidifier to provide the optimum
humidity level in the home.
The digital readout on the automatic control displays the humidity
level inside the cold air return duct. This reading will accurately
indicate the humidity in the living space when the HVAC blower is
operating.
Call Dealer for Service: The red light indicates that the
humidifier is not operating normally and that service is required.
Change Water Panel: The yellow light indicates that it is time
to change the Water Panel in the humidifier. (Model 60 only. The
Model 62 is used for steam applications that do not require this
feature.)
Humidifier On: The green light indicates that the humidifier is
operating normally.