Greenheck DG / DGX with Pilot Ignition (463555 IOM) (Pre-2008) - Manual (Page 14)

Installation
14
Evaporative Cooling with the Water Wizard
Installation - Water Wizard (Optional)
Step 3 Wire the Solenoid(s)
Wire the supply line solenoid and drain solenoid as
shown on the unit’s wiring diagram in the control
center.
Step 4 Wire the Temperature Sensor
If the evaporative cooler shipped separate from the unit, the temperature sensor must be wired. The sensor wire
is bundled inside the discharge end of the evaporative cooler. Wire the sensor wire to terminals AI2 and AIC on
the terminal strip in the unit’s control center.
Step 1 Install Normally Closed Supply Line/Solenoid
Connect the water supply line to the manual supply valve in the unit. Install the supply solenoid in the supply
line, upstream of the manual supply valve and below the roofline.
Step 2 Install Normally Open Drain Line/Solenoid
Connect the drain line to the supply line between the manual supply valve and the supply solenoid. Install a
drain solenoid in the drain line, below the roof line. A trap should be installed in the drain line.
CAUTION!
Any wiring deviations may result in personal
injury or property damage. Greenheck is not
responsible for any damage to, or failure of the
unit caused by incorrect final wiring.
NOTE!
The Water Wizard start-up must be completed for proper performance.
NOTE!
Solenoid(s) may be provided by Greenheck (if ordered) or by others.
WARNING!
Disconnect and lock-out all power and gas before performing any maintenance or service to the unit.
Failure to do so could result in serious injury or death and damage to equipment.
Supply Line Drain Solenoid
(Normally Open)
Supply Solenoid
(Normally Closed)
Manual
Supply Valve
Pressure
Gauge
To Media
Sump
Drain
Roof
Line
Trap
NOTE!
The following instructions are provided for evaporative coolers equipped with the Water Wizard only.
Additional instructions are provided for evaporative coolers equipped with the auto-drain and fill or bleed-off.
Water Wizard Installation
Factory
Installed
Field
Installed
Water Wizard Valves (when provided by Greenheck)
Unit
Model
Assembly
Number
GFC
Part Number
ASCO
Part Number
Solenoid
Type
De-Energized
Position
Diameter Quantity
DG - H10/H20
DGX - H12/H22
DGX - H30 (<9000 cfm)
852370
461262 8210G2 Supply Closed 1/2 inch 1
383086 8210G34
Supply Line
Drain
Open 1/2 inch 1
DG - H30
DGX - H32 (≥9000 cfm)
DGX - H35, H38, H42
852371
383088 8210G9 Supply Closed 3/4 inch 1
383086 8210G34
Supply Line
Drain
Open 1/2 inch 1
Part numbers subject to change.