2110498-3
Cooler Installation
CAUTION: Make sure that the mounting surface is strong
enoughtosupport the operating weight ofthe coolerwheninuse.
(For operating weight, see Specification Table.)
CAUTION: Never start cooler until installation is complete
and unit has been tested for rigidity.
CAUTION: Donotscrewordrillwithin5 inches of the bottom
of the wet module. You could puncture the reservoir.
CAUTION: If the unit is supported with legs at each corner,
the middle of the unit where the two sec-
tions join must be supported as well.
NOTE: For ease of installation you can
separate the wet module from the blower
module by removing the4 bolts from the wet
module side (Fig. 1). Remember to unplug
the pump and drain pump before separating
the modules.
Water Connection
• Install overflow assembly. Remove
nut and place nipple through the hole
in the pan, with the rubber washer be-
tween the pan and the head of the drain
nipple (Fig. 2). Screw on nut and draw
up tight against bottom of pan. Insert
overflow into nipple to retain water.
The overflow pipe comes from the fac-
tory connected to the dump pump hose.
The overflow pipe may be removed to
drain pan when necessary. A garden
hose may bescrewed on the drainnipple
to drain water away from your unit.
• Connectwatersupplyline. Install
a sillcock and water valve on faucet
as shown by figure 3. Place the nut
and ferrule on thetubing and tighten
the nut until water tight. NOTE:
Do not connect the water supply to
any soft water applications.
• Install float valve and fill pan.
Refer to Fig. 4. Remove items 1,
2, 3, and 4. Insert float body (5)
through hole in back post panel as
shown. Install washer (1) and nut
(2). Tightentokeepfloatfromturn-
ing. Place nut (4) and ferrule (3) on
water supply line. Connect to float
fitting and tighten until water tight.
Bend rod (6) to adjust float until
water level is about 1 inch below
the top of the overflow pipe. Slide
float shield (7) over float body (5)
until it snaps into place.
should be adequately protected against overloads and short circuits.
Note: Electrical installation should be performed by a qualified
electrician. Be sure to follow all National and Local Electrical
Codes when installing this cooler.
• Install weatherproof switch box. Located inside the unit in a
plastic bag is a switch box and cover, a chase nipple, a seal ring
and a toggle switch. Remove the electrical junction box (Fig. 5)
which is mounted on the inside of the center panel. From inside
the unit, insert the chase nipple
through the electrical access
hole. Slide the seal ring over
the chase nipple. Mount the
switch box to theoutside of the
unitbythreadingthe chase nip-
ple into the switch box. Run
the three switch leads through
the nipple and into the switch
box and reinstall the junction
box. Connect thegreen ground
lead to the ground screw in the
switch box.
• Supply power to unit. Run power to the external switch box and
connect to the two poles of the toggle switch. Connect the gray and
white leads from the cooler electrical box to the two poles of the
toggle switch. Refer to the appropriate wiring diagram to complete
the electrical installation of your cooler. Secure the switch into the
switch box and install the gasket and switch cover.
CAUTION: All openings in the external switch box must be
sealed to prevent water from entering the switch box.
CAUTION: Pump receptacles are for grounded evaporative
cooler pumps only. Do not plug anything else into receptacle.
WARNING: Make sure that cooler cabinet is properly
grounded to a suitable ground connection for maximum safety.
Thermostat Installation
1) Find a suitable location forthe wall thermostat (away from sources
of heat, sunlight, or ventilation, and between 4 and 6 feet from the
floor). The thermostat may be mounted to a standard electrical
box.
2) Route an insulated four-conductor thermostat cable (or similar)
from the Control Box inside the cooler to the thermostat electrical
box. Thiscableisnotsupplied. WARNING: Thethermostat
cableshouldnotbe routednexttoorenterthe cabinet through
the same inlet as the power supply wire.
3) Connect the thermostat wires to the terminals on the back of the
wall control and to the terminals located on the left side of the
control box in the unit. Make sure to follow the color code found
next to each terminal.
Electrical Installation
WARNING: Disconnectall electrical service that will beused
for this unit before you begin the installation and leave it discon-
nected until the installation is complete.
Thecontrol box is factory wired and installed for either 120Vor230V
operation depending on the model you purchased. The supply power
Amperage Draw And Belt Tension
This unit is equipped with an adjustable motor drive sheave for
adjusting the blower wheel speed to the proper loading on different
duct systems. It is important that the motor drive pulley is adjusted
to correct size to assure maximum air delivery without damage to the
motor. Be sure to follow these instructions carefully.
• Adjust drive pulley. After the unit is completely installed, adjust
the drive pulley to the least diameter and adjust belt tension. See
the maintenance section for adjusting belt tension.
Wet
Module
Fig. 1
Mounting
Bolts
Faucet
Water Supply
Valve
Sillcock
Ferrule
Nut
Fig. 3
1234
5
6
7
Fig. 4
Rubber Washer
Overflow Pipe
Nipple
Bottom Pan
Nut
Fig. 2
Drain Pump
Hose
Fig. 5
Electrical
Box
Seal Ring
Junction
Box Chase
Nipple
