25
®
Model MSX Make-Up Air
Drain Mode
Drain Mode locks open the drain solenoid and drains
the supply line between the supply solenoid and
the media. To activate Drain Mode simultaneously,
press the Function and Enter Keys (L2 will light). To
deactivate Drain Mode and unlock the drain solenoid,
simultaneously press the Function and Enter Keys
again.
Flow Test Mode
Activating Flow Test Mode opens the supply solenoid
and allows water to pass to the manual supply
valve. To activate Flow Test Mode, press and hold
the Function Key for one second (L3 will flash). To
deactivate Flow Test Mode and allow the supply
solenoid to close, press and hold the Function Key
again for one second.
Program Mode
Program Mode allows the user to view the Program
Menu and edit the factory default settings. To access
Program Mode and view the Program Menu press and
hold the Enter key for three seconds. While viewing
the Program Menu press the Up and Down keys to
scroll through the Menu Options. To view the setting
of the selected Menu Option, press the Enter key.
To edit the setting, press the Up or Down key while
viewing the setting. To save the setting and return to
the Program Menu, press the Enter key. To return to
the Program Menu without saving the change, wait
10 seconds. To exit Program Mode from the Program
Menu, wait 10 seconds.
Function Key
L1
L2
L3
Enter Key
Up Key
Down Key
Water Wizard™ User Interface
Key Function Description
Operation - Water Wizard™ (optional)
CAUTION
The sump drain line must be clear and draining to a
safe location before using Flow Test Mode.
CAUTION
Be aware of the water level in the sump tank at all
times when using the Flow Test Mode.
WARNING
Changing the default settings will significantly affect
performance. Only change a setting after reading
and understanding this entire manual.
WARNING
The Enter key must be pressed to save any changes
made to a setting.
Dry Bulb Temperature
The dry bulb temperature is visible on the home
screen. If a number is not visible, wait 15 seconds
and use the Up and Down Keys until a number is
displayed.
Wet Bulb Temperature
To view the Wet Bulb Temperature, simultaneously
press and hold the Up and Down Keys.
Indicating Lights
Three indicating lights are located across the top
of the display to indicate the status of the Water
Wizard™.
Light Status
Indicating
Light
On
Off
Blinking
(Long on,
Short Off)
Blinking
(Short on,
Long Off)
L1
Call for
cooling
No call
for
cooling
Call for
cooling.
Outdoor
temperature
lockout.
N/A
L2
Drain
solenoid
open
Drain
solenoid
closed
N/A
Supply
solenoid
open.
(Drain
solenoid
closed).
L3
Cooling
on
Cooling
off
Supply
solenoid
locked
closed
Flow test
mode active
