Greenheck TSU Base Unit Manual (464441) - Manual (Page 10)

Make-Up Air Unit 10
®
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 the unit’s control center.
Refer to ladder diagram for proper connections.
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.
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
Three-Sided Evaporative Coolers
Housing
Size
Water Pressure (in. wc)
Front Sides
H-50 21 26