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Installation of water wizard™ (optional), Install normally open drain line/solenoid, Wire the solenoid(s) – Greenheck DG / DGX with Direct Spark (470652) User Manual

Page 11: Wire the temperature sensor, Warning, Caution

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Direct Spark Ignition Make-Up Air

11

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Installation of Water Wizard™ (optional)

Evaporative Cooling with the Water Wizard™

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
roof line.

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.

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.

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.

Water Wizard™ Installation

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.

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.

NOTE

Solenoid(s) may be provided by manufacturer (if
ordered) or by others.

CAUTION

Any wiring deviations may result in personal injury or
property damage. Manufacturer 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.

Water Wizard™ Valves

(when provided by manufacturer)

Unit

Model

Assm.

Number

Mfg.

Part

Number

ASCO

Part

Number

Solenoid

Type

De-Energized

Position

Diameter Qty.

DG-

H10/H20

DGX-

H12/H22

DGX-H32

(<9000 cfm)

852370

461262 8210G2

Supply

Closed

1/2 inch

(12.7 mm)

1

383086 8210G34

Supply

Line

Drain

Open

1/2 inch

(12.7 mm)

1

DG-H30

DGX-H32

(≥9000 cfm)

DGX-H35,

H38, H42

852371

383088 8210G9

Supply

Closed

3/4 inch

(19.05 mm)

1

383086 8210G34

Supply

Line

Drain

Open

1/2 inch

(12.7 mm)

1

Part numbers subject to change.

Sump Drain

To Media

Trap

Roof Line

Supply Line Drain Solenoid

(normally open)

Supply Solenoid

(normally closed)

Manual Supply Valve

Factory

Installed

Field

Installed

Pressure Gauge