INDICATOR LIGHTS
ARROW BUTTONS
Use the up and down arrow button to set the desired humidity setpoint on the display screen.
The setpoint can be any number between 36-90%. Creating a setpoint means that when
the indoor humidity is lower than the set point, the machine will stop automatically.
Conversely, when the indoor humidity is higher than the set level, the unit will operate.
NOTE: The humidty levels
displayed are approximate only (+/- 5%)
CONTINUOUS MODE
To switch into continuous mode, set the humidity below 36%. At this point the Cont.light
should iluminate green on the display board to indicate you have succesfully switched to
continuous mode. The display screen will show“CO".
When set to continuous, the dehumidifier will run constantly, regardless of the humidity
level.To stop the dehumidifier from running, turn the unit off or switch back to normal
humidistat operation. To swtich back to normal humidistat operation, simply move the
setpoint above 36%.
CENTRAL CONTROL
This mode is not applicable on the PureAiro DSC 90S.
AUXILLARY TERMINALS A5/A6
The A5/A6 on the terminal strip can be used as a safety switch for external condensate
pumps.It should be set to N/O (normally open) at the dehumidifier. If an E4 error codes,
switch the wiring to N/C (normally closed).
HUMIDITY DISPLAY SCREEN
The display screen has two functions:
POWER INDICATOR LIGHT
CONTINUOUS MODE/AUTODEFROST LIGHT
This light indicates that the unit is properly powered on and ready to operate. Always make
sure the unit is "off" prior to performing any service.
When this light iluminates green, it indicates that the dehumidifer is set to continuous
operation mode.
1. When the unit is powered on, it shows the humidity of the space.
2. While setting the desired humidity level, the screen wil show the set humidity. After a brief
delay,the display will revert to current humidity level.
When the light glows red, it means the unit is in auto defrost mode and clearing the
evaporator coil of any ice buildup.
STEP #2: SET UP DRAIN LINE
The drain line should be routed to a suitable drain on the outside. It must flow down to the
drain without any loops, dips, or valleys.
STEP #3: PLUG UNIT INTO 15 AMP GROUNDED CIRCUIT.
Use this button to turn the dehumidifier on and off. Press once to turn machine on. You will
hear 2 beeps and the
light will illuminate green. Press the power button a second time and
you will hear one beep as the machine shuts down. Note that there is a one minute fan delay
on shutdown.
POWER KEY
Key Functions
88
Power
Cont.
Defrost
Comp
Drain
Central control
1
2
3
4
5
1
2
3
04
05
When the compressor light glows red, it indicates the compressor has been initiated but is
currenty warming up.
Once the compressor light switches to green, it indicates the compressor is in working
status.
COMPRESSOR LIGHT
4
RECOMMENDED DRAIN OPTION-TRANSITION TO PVC PIPE
Drain Tube- 12 inches Long.12 mm OD.
Cut a piece of 3/4" OD PVC that is approx. 6”long.
Insert the open end of the tubing into the 3/4" pipe so that it does not extend into the elbow
fitting. For proper flow, a minimum downward slope of 1”per 10' run is required.
(Note: If a proper downward angle is not possible, then it is recommended to use a
PureAiro DSC 90S which includes an integrated pump. Alternatively you can use an
external condensate pump).
Support the PVC tubing so that it maintains a
smooth downward flow to drain.
Always test the drain before leaving the
installation area.
1
2
3
4
Insert PVC into a 3/4”elbow, then attach to a 3/4" OD length of PVC to drain.
(Note: Keep the length of PVC drain pipe to a minimum)
5
When the compressor light glows red, it indicates the compressor has been initiated but is
currenty warming up.
Once the compressor light switches to green, it indicates the compressor is in working
status.
COMPRESSOR LIGHT
4
PureAiro
DSC 90S
