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- 14 - - 15 -
Apply the RH setting label to the front cover if you want a guideline for
setting the control according to outdoor temperature. Since all houses are
different, you will need to determine exactly where to set the control so
that you have enough humidity to meet your needs, but not so much as to
cause excess condensation on windows or other cold surfaces.
CAUTION
Do not adjust humidity set-point above recommended level or to
recommended level if condensation occurs on inside surface of
windows or on other surfaces. Excess condensation can cause
damage to structure or furnishings. Excess moisture can allow
the possibility for mold growth to occur.
When the control is first powered up, it will display “30%,” which is the
default setting.
OPERATING INSTRUCTIONS –
MODEL 65 MANUAL DIGITAL HUMIDISTAT
FIGURE 4 – Control Display and User Buttons
LCD Display
Mode Buttons – Use
to turn control On/Off.
Buttons –
Use to view and
adjust relative
humidity setting.
RH Setting Label
FIGURE 5 – LCD Display
90-1670
Blinking ON +
*
: Temp Limits Exceeded.
See Operating Limits, page 16.
Solid ON:
Control On
Blinking ON:
Humidifying
Numbers show
current room humidity
OR humidity setting
SET is displayed
when
or
is
pressed. The value
displayed is the
relative humidity
setting.
OFF: Control Off
TURNING CONTROL ON & OFF
Begin by pressing the “ON” button. “ON” will appear on the display. This
means the control is on, but it does not necessarily mean the humidifier
is running. In order for the control to turn on your humidifier, several
conditions must be met:
1) The control and humidifier must be powered,
2) The RH level in the conditioned space must be below the set point, and
3) Your furnace or furnace blower must be running.
When these conditions are met and the humidifier is operating, “ON” will
blink in the control display.
NOTE: If you have an Aprilaire Model 800 Steam Humidifier and a Model
850 Fan Pack, they will operate independently of any HVAC (Heating,
Ventilating and Air Conditioning) equipment.
To disable the humidifier, press the “OFF” button. The control will remain
on and display “OFF” plus the actual RH but will not allow the humidifier to
operate. The control must be ON in order to adjust the RH setting.
SETTING THE DESIRED RH LEVEL
Use the
and
buttons to display and raise or lower the RH setting.
When pressing the
and
buttons, “SET” and the RH setting will be
displayed. Each press of the buttons will change the setting by 1% RH.
If a button is pressed and held, the setting will change 1% RH every 1/2
second. “SET” will disappear and the display will once again show the
actual RH 5 seconds after the buttons are pressed.
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