Greenheck MSX (470658) - Manual (Page 26)

26 Modular Supply Make-Up Air Unit
®
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