Open Windows To Exhaust Air, Cooler Installation

Wet

Module

Mounting Bolts

Fig. 1

Fig. 4

Open Windows To Exhaust Air

An often misunderstood concept of evaporative cooling is the amount of air that should be exhausted. How much should you open your windows? The fact is that most people do not open their windows enough. The following two methods will help you determine the amount to open your windows.

First Method

You should allow an opening of at least 2 square feet (288 square inches) for each 1000 CFM rating of your unit. Example: At 3320 CFM, model ADA 51 (1/2 hp) requires 6.6 square feet (950 square inches) of opening (3320/1000 * 2 = 6.6). Multiply the number of windows by window width in inches and divide this into the number of square inches required for your size unit. This will give you the height to open windows. In this example, four 36 inch wide windows should be opened 6.6 inches each.

Champion Air Balancing Method

1.Take a piece of tissue paper and cut it lengthwise into 3 equal strips.

2.Turn your cooler on high cool.

3.Open one window at least six inches wide in each room that you want to cool.

4.Take the piece of tissue paper and put it up against the screen of the open window furthest from the cooler discharge opening. Let go of it. It will do one of three things.

IF	It falls down.
THEN	CLOSE all of the windows one inch and try step 4 again.
IF	It plasters itself to the screen.
THEN	OPEN all of the windows one inch and try step 4 again.
IF	It stays on the screen lightly.
THEN	PERFECT. You are done. Enjoy your cooler.

NOTES:

•When switching to low cool, you must rebalance your home. Repeat step 4.

•Once you balance your home you can cool some areas more than others by opening those windows more and closing the others by the same amount. Repeat step 4 to make sure your home is still air balanced.

•Mount motor. Install blower motor in the motor mount yokes, adjust- ing the yoke if necessary. Fasten with the provided mounting clips (see Fig. 2). NOTE: Adjustable yoke will have to be reversed for 1 H.P. motors.

•Install pulley. Install the adjustable motor pulley so that it aligns with the blower drive pulley (see Fig. 3) and tighten set screw.

Motor		Motor
Motor		Pulley
Clips		Pulley
Clips
	Blower	Blower
	Housing	Blower
		Pulley
Adjustable	Fig. 3
Fig. 2 Yoke	Fig. 3

Electrical Installation

WARNING: Disconnect all electrical service that will be used for this unit before you begin the installation.

• Remove junction box. The elec-	Screws
trical junction box is located in	Junction
the upper inside of the left center	Box
post. Remove the two screws and
pull box out from panel for access
to plug wiring (Fig. 4).

• Hook up electrical. Electrical hook up should be done by a

qualiﬁed electrician, so that all electrical wiring will conform to your local standards. This unit is suppled with a 120V pump. For 240V pump operation, a 240V pump must be purchased. The fan and pump receptacles will support both 120V and 240V installations. See the wiring diagrams for 120V and 240V installations on the following page.

IMPORTANT: When a single speed motor is used, do not use the red lead on the receptacle and motor plug wiring. Tape off end of both of the red leads.

CAUTION: Pump receptacle is for grounded evaporative cooler pump 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.

Cooler Installation

CAUTION: Make sure that the mounting surface is strong enough to support the operating weight of the cooler when in use. (For operating weight, see Speciﬁcation Table.)

CAUTION: Never plug in cooler until installation is complete and unit has been tested for rigidity.

CAUTION: Do not screw or drill within 5 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 sections

join must be supported as well.

NOTE: You can separate the wet module from the blower module by removing the 4 bolts (2 bolts in ADA35 and ASA35) from the wet module side (Fig. 1)

Motor Installation

• Install motor cord. For typical 120V

installation, connect motor cord to motor using the following color

Water Connection

•Install overflow assembly. Remove nut and place nipple through the hole in the pan, with the rubber washer between the pan and the head of the drain nipple (Fig. 5). Screw on nut and draw up tight against bottom of pan. Insert over- ﬂow pipe in nipple to retain water. The overﬂow pipe may be removed to drain pan when necessary. A garden hose may be screwed on the drain nipple to drain water away from your unit.

•Connect water supply line. Install a sillcock and water valve on faucet as shown by ﬁgure 6. Place the nut and ferrule on the tubing and tighten the nut until water tight. NOTE: Do not connect the water supply to any soft water applications.

Overﬂow Pipe