Greenheck DG / DGX with Direct Spark (464043 IOM) (Pre-2008) - Manual (Page 27)

27
NOTE!
The minimum cooling temperature is preset to the factory recommended 75ºF. Steps 5-7 should only
be complete if the minimum cooling temperature needs adjustment.
NOTE!
The inlet air sensor function overrides and shuts down the evaporative cooler if the outside
temperature falls below the minimum cooling temperature.
Step 5 Enter Program Mode
Press and hold the Enter Key for three
seconds. The display will read “Pro” when
Program Mode is active.
Start-Up - Water Wizard (Optional)
NOTE!
The manual supply valve ships closed and must be
adjusted for proper performance.
Step 2 Set the Water Pressure
With the solenoid open, set the supply water
pressure to the correct setting. (see table at
right). Use the manual supply valve to adjust the
supply pressure. A pressure gauge is provided
between the manual supply valve and the media.
Step 3 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 4 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 Troubleshooting, Water Wizard.
Step 1 Open the Solenoid
Confirm that the manual water supply valve is
closed. Press and hold the Function Button for
one second. L3 will begin blinking (short on, long off),
indicating that Flow Test Mode is active and the
supply solenoid is open.
Program Display
Drain Solenoid
Supply
Solenoid
Manual
Supply Valve
Pressure
Gauge
To Media
Sump
Drain
Roof
Line
Trap
Water Wizard Installation
Start-Up
Recommended Water Pressure Chart
Housing
Size
Media Width
(inches)
Water Pressure
(in. wc)
12 30 20
22
43 3 ⁄
4
* 36
60* 61
32
66* 72
96* 42
DG-10 26 3 ⁄
4
19
DG-20 66 74
DG-30 84* 35
*Multiple media sections. Value represents total media width.