Greenheck DG/DGX Pilot Ignition (470651_IOM) - Manual (Page 21)

NOTE
The Freeze Temperature is preset to the factory
recommended 45ºF. Steps 9-11 should only
be completed if the Freeze Temperature needs
adjustment.
NOTE
The Freeze Temperature is the temperature at which
the supply solenoid closes and the drain solenoid
opens to drain the supply line, preventing possible
freeze damage. A drain solenoid is required for this
option.
9. Enter Program Mode
Press and hold
the Enter key
for three seconds. The
display will read “Pro”
when Program Mode is
active.
10. Adjust the Freeze Temperature
While in Program Mode, use the Up and Down
keys to navigate
through the
Menu Options
until “Frt” is
displayed. Press
the Enter key to access
the selected Menu
Option setting.
Use the Up and Down keys to adjust the Freeze
Temperature setting as needed. Press the Enter key to
set the Freeze Temperature and return to the Program
Menu.
Program Display
Freeze Temperature
Display
NOTE
The enter key must be pressed to save the new
freeze temperature.
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.
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.
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
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.
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™.
11. Exit Program Mode
After ten seconds of idle time the controller will exit
Program Mode.
Model DG / DGX Pilot Ignition Make-Up Air 21
®