Greenheck DG / DGX with Pilot Ignition (463555 IOM) (Pre-2008) - Manual (Page 28)

28
Start-Up - Water Wizard (Optional)
Step 1 Open the Solenoid
Confirm that the manual water supply valve is
closed. Press and hold the function button for
one second. L3 (refer to Water Wizard operation in the
Reference section) will begin blinking (short on, long
off), indicating that flow test mode is active and the
supply solenoid is open.
Step 2 Set the Water Pressure
With the solenoid open, set the supply water
pressure to the correct setting from the following
tables. Use the manual supply valve to adjust the
supply pressure. A pressure gauge is provided between
the manual supply valve and the media.
WARNING!
Opening the manual supply valve will allow
water to pass to the media. Be sure the
sump is safely draining before opening the
manual supply valve.
NOTE!
The manual supply valve ships closed and
must be adjusted for proper performance.
NOTE!
The recommended water pressure is based on
media width. Refer to the table provided
for proper water pressure settings.
Housing
Size
Media Width
(inches)
Water
Pressure
12 30 20
22
43 3 ⁄
4
36
60 61
32
66 72
96* 42
35 120* 61
38 180* 37
42 216* 51
DG-10 26 3 ⁄
4
19
DG-20 66 74
DG-30 84* 35
Recommended Water Pressure Chart
*Multiple media sections. Values represent total media width.
Step 3 Break-in Media
Leave the supply solenoid open to saturate and break-
in the media for 20 minutes with the blower off.
Step 4 Close Solenoid
With the pressure set, press the function key for
one second to deactivate flow test mode and
allow the supply solenoid to close.
Step 5 Check Media
Start the cooling cycle and check the media after one
hour of operation. If the media is continuously dry or if
too much water is draining from the sump tank, refer to
Water Wizard troubleshooting.
NOTE!
Steps 6 through 8 are provided to adjust the minimum cooling temperature. The minimum cooling
temperature is preset to the factory recommended 75ºF. Only adjust if needed.
NOTE!
The inlet air sensor function overrides and shuts down the evaporative cooler if the outside
temperature falls below the minimum cooling temperature.
Step 6 Enter Program Mode
Press and hold the enter key for three seconds.
The display will read “Pro” when program mode
is active.
Program Display
Start-Up