USER'S MANUAL AND INSTALLATIONINSTRUCTIONS10 and 12 SEERSingle Package Air Conditioner

Single Package Air Conditioner

IMPORTANTRead this owner information to become familiar with the capabilities and use ofyour appliance. Keep this with literature on other appliances where you have easyaccess to it in the future. If a problem occurs, check the instructions and followrecommendations given. If these suggestions don’t eliminate your problem, callyour installing contractor or distributor in your area.

INTRODUCTIONMost any air conditioner will keep you cool. Our air conditioner was designed todo it efficiently. Efficiency means less cost to you while keeping you comfortable.

WHY YOUR AIR CONDITIONER WORKS SO WELL, SO QUIETLY

1. Air is cooled by a large evaporator coil. Moisture is also removed from the air bythis same coil.

2. Air is then delivered through the main duct, via registers, into your home.

3. Return air is drawn through the return register.

4. This air enters the unit, passes through the evaporator coil, is cooled and dehumidi-fied. Then the cycle begins again.

2

SECTION 1. OWNER INFORMATION

OPERATING INSTRUCTIONS

To Turn On Air Conditioner

If you have a heating/cooling thermostat:1. Set the system switch to "Cool."2. Set the thermostat at the temperature level

you desire.3. Turn the power on. Your air conditioner

should start as soon as room temperaturerises above the setting on the thermostat.

If you have one thermostat for heating andanother for cooling, they must be inter-locked to prevent simultaneous operation(See Figure 1):1. Turn the heating thermostat to its lowest

possible setting.2. If the cooling thermostat has an "On/Off"

switch, turn it "On."3. Set the cooling thermostat to the desired

temperature.4. Turn the power on. Your air conditioner

should start when room temperature ex-ceeds the thermostat setting.

To Shut Off Air Conditioner

If you have a heating/cooling thermostat:1. Turn the system switch to "Heat" or "Off."2. Turn the thermostat to the desired heating

temperature setting.3. If you are turning your air conditioner off for

the winter or an extended period, shut offthe power to the air conditioner.

If you have one thermostat for heatingand another for cooling, they must beinterlocked to prevent simultaneousoperation (See Figure 1):

1. Turn your cooling thermostat "Off" or to itshighest setting.

2. Turn the heating thermostat to the desiredtemperature.

3. If you are turning your air conditioner off forthe winter or an extended period, shut offthe power to the air conditioner.

BEFORE YOU CALL A SERVICEMANLet your serviceman check your system at thestart of each air conditioning season. He willmake sure it's working right, clean or changefilters and make any needed adjustments.

In addition, follow these simple rules:1. Never run your system without filter. If you

do, the cooling coils will get dirty and maybecome clogged.

2. Set your thermostat at the comfort levelyou wish -- and then leave it alone. Let itcontrol the operation of the air conditioningsystem. If you get chilly, turn it up a degreeat a time until comfort is restored.

3. It takes longer for an air conditioner to coolyour dwelling than it does for your furnaceto heat it. So . . . don't turn the unit on andexpect a dramatic drop in temperature, atleast not right away. If your home is hot andhumid, the temperature will drop slowly.

4. Check your filters every ten days in sum-mer to see if they are dirty. To keep themclean, use a mild solution of detergent andwater on washable types. Replace nonwashable filters.

5. Keep your outdoor condenser coil clean.You can hose it down when it gets dirty.

If your air conditioner isn't working:1. Make sure the fuses are not blown or that

your circuit breakers are on.2. See that your thermostat is set at the

desired temperature and that your system'sswitch is on "Cool."

3. For free air flow, make sure your returnregister is not covered and that the filter isclean.

4. Check the outdoor condenser coil andmake sure it is clean and not clogged withgrass or leaves.

If your air conditioner still isn't working, call yournearest distributor.

Cooling Thermostat

FurnaceThermostat

Double ThrowDouble Pole Switch

To Air Conditioner To Furnace

R R

Figure 1. Thermostat Interlock System

3

SECTION 2. INSTALLERINFORMATION

GENERALRead the following instructions completelybefore performing the installation.These instructions are for the use of qualifiedpersonnel specially trained and experienced inthe installation of this type of equipment andrelated system components. Some states re-quire installation and service personnel to belicensed. Unqualified individuals should notattempt to interpret these instructions or installthis equipment.

The single packaged air conditioners are de-signed for outdoor installation only and can bereadily connected into the high static ductsystem of a home. The only connectionsneeded for installation are the supply and returnducts, the line voltage, and thermostat wiring.A complete air conditioning system typicallyconsists of:

• Single Package Air Conditioner• Home Fittings Kit• Unit Fittings Kit• Thermostat

The single package air conditioner is com-pletely assembled, factory wired, and factoryrun tested. The units are ready for easy andimmediate installation.

PRE-INSTALLATION CHECKBefore any installation is attempted, the coolingload of the area to be conditioned must becalculated and a system of the proper capacityselected. It is recommended that the area to beconditioned be completely insulated and vaporsealed.

The installer should comply with all local codesand regulations which govern the installation ofthis type of equipment. Local codes andregulations take precedence over any recom-mendations contained in these instructions.Consult local building codes and the NationalElectrical Code (ANSI CI) for special installa-tion requirements.

The electrical supply should be checked todetermine if adequate power is available. Ifthere is any question concerning the powersupply, contact the local power company.

Inspecting Equipment: All units are securelypacked at the time of shipment and, uponarrival, should be carefully inspected for dam-age. Claims for damage (apparent or con-cealed) should be filed immediately with thecarrier.

INSTALLATION1. SELECT THE BEST LOCATION FOR

THE AIR CONDITIONING UNIT

IMPORTANT: DO NOT PLACE UNIT UNDERTHE HOME.

• Select a solid, level position, preferably on aconcrete slab, slightly above the grade level,and parallel to the home.

• The hot condenser air must be dischargedup and away from the home, and if possible,in a direction with the prevailing wind.

• Do not place the unit in a confined space.• If practical, place the air conditioner where it

and the ducts will be shaded from the after-noon sun when the heat load is greatest.

• Try to select a site for the unit that is as closeas possible to the proposed return grillelocation.

• Keep in mind that the length of the supply andreturn ducts should be kept to a minimum withno sharp radiused bends.

2. UNPACK THE UNITIt is recommended that the unit be unpacked atthe installation site to minimize damage due tohandling.

! CAUTION:Do not tip the unit on its side. Oil mayenter the compressor cylinders andcause starting trouble. If unit has beenset on its side, restore to upright posi-tion and do not run for several hours.Then run unit for a few seconds. Dothis three or four times with five min-utes between runs.

a. Remove the bands from around the unit.b. Unfold the top and bottom cap flanges.c. Carefully remove the top cap and tube.

4

Figure 2. Minimum Unit Clearances

Figure 3. Return and Supply Air Fittings Figure 4. Return Air Box

14" Duct DimplesTransition Duct Screws

Supply Air Return Air

3. INSTALL THE RETURN AND SUPPLYAIR FITTINGS ON THE UNIT

The supply and return fittings are included withselect models. If supplied, the duct fittings areshipped in the supply duct. They attach to theunit openings with a flange and bead arrange-ment, secured with two sheet metal screws.Note: For ease of access, install fitting beforepositioning unit in final location.

SUPPLY DUCTPosition the supply duct collar, if supplied, so theedge of the unit opening fits between the flangeand the bead. Overlap the collar ends keepingthe small screw holes underneath. Align theholes in the crimped area and install one screw.

Note: It may be necessary to loosen the fourscrews that hold the transition duct in order toinstall the supply fitting. Re-tighten when instal-lation is complete.

Tap collar as necessary to ensure engagementwith unit opening and install second screw.Tighten first screw. Rotate collar clockwise sojoint is near three o’clock position.

RETURN DUCTThe 12" return duct is installed in the samemanner as the supply duct. If the unit has a 14"return, follow these instructions.

Align the slots with the holes in the collar andinstall two screws. Position the collar over theopening and align the four notches in the collarwith the four dimples in the panel. Using self-drilling screws (10-16x.5) attach the collar tothe rear panel.

4. LOCATING AND INSTALLING THE RE-TURN AIR ASSEMBLY

To avoid complications, locate and install thereturn air assembly first. The return air box withgrille and filter (Figure 4) should not be locatedin heavy traffic areas like hallways or center ofrooms. A good spot is in a corner or under atable, if a minimum two inch clearance is avail-able. If desired, the return opening can belocated inside a closet with louvered doors thathave an open area equal to or greater than the12" x 20" grille furnished. The return air grille canbe placed in the wall of a closet and the air ductedinto the filter box through a boxed-in area at thecloset floor level. Make sure the filter is readilyaccessible.

After determining the location of the return airopening, start the installation from under thehome by cutting a small hole in the fiberunderboard to determine how the floor joist

10 SEER 12 SEERModel Model

2 Ton 12 2 Ton 122 1/2 Ton 12 2 1/2 Ton 123 Ton 12 3 Ton 123 1/2 Ton 12 3 1/2 Ton 144 Ton 14 4 Ton 145 Ton 14

Return Dia. (in)

Return Dia. (in)

6 ft.

24"

12"

12"

5

location will affect cutting the opening neededfor the box. Floor joists generally are located on16" centers, leaving 14-3/8" between joists.After measuring the return air box (approxi-mately 12-1/4" x 14-1/4"), cut the hole throughthe floor so that the box will fit between the floorjoists. Care should be taken when cutting throughcarpeting to avoid snags. In most installationsit will be necessary to cut a similar hole in thefiberboard directly under the hole in the floor.However, if the floor is more than ten inchesdeep, it will only be necessary to cut a hole forthe collar on the return air box or for the insulatedduct.

Set the box into the opening and fasten withscrews or nails. Put the filter and return air grillein place.

5. LOCATING AND INSTALLING THESUPPLY DAMPER(S)

! CAUTION:When a home is not equipped with amake-ready kit means must be pro-vided to prevent simultaneous opera-tion of the heating and cooling units. Aheat/cool thermostat is available forthis purpose.

When installing this air conditioningsystem in conjunction with a furnace,a damper must be installed in the fur-nace base assembly to prevent coldair being discharged around the heatexchanger. Damage to the heat ex-changer and asphyxiation may occurif a damper is not installed.if the damp

Check with the furnace manufacturerfor damper requirements. Failure toinstall the required furnace dampermay invalidate code agency listing andlimited warranty on the furnace.

When locating the supply damper(s), carefullycheck floor joists and frame members thatcould interfere with the installation of the damperor flexible duct. Ideally, the damper should belocated in the bottom of the main duct, forwardof center of the home, at least three feet from the

nearest register. The round supply opening inthe slanted side of the damper should face theside of the home where the air conditioner islocated. To locate the center of the heat duct,first cut a small hole in the fiberboard below theduct at the desired location. After locating theduct center, cut a hole approximately 3/4" largerthan the damper opening in the fiberboard. Cuta 9-1/8" x 13-1/8" hole in the duct and bend overall tabs flat on the inside of the heat duct. Afterinserting the damper into the duct, bend over alltabs flat on the inside of the heat duct. Seal theopening between the fiberboard and damper orflexible duct.

DUCTING SYSTEM

DUCT REQUIREMENTSThe supply duct system, including the numberand type of registers, will have much moreeffect on the performance of an air conditioningsystem than any other factor. The duct mustbe sufficiently large to conduct an adequateamount of air to each register.

THE AIR CONDITIONING OUTPUT OF THESYSTEM WILL NOT COOL THE HOME IFTHE AIR IS LOST TO THE OUTSIDETHROUGH LEAKS IN THE DUCT SYSTEM.ALSO, DUCTS WHICH ARE COLLAPSED ORRESTRICTED BY FOREIGN OBJECTS WILLPREVENT ADEQUATE AIR FLOW.

Note: For highly resistive duct systems it maybe necessary to add an additional return air ductand or supply to achieve maximum perfor-mance and prevent coil icing and refrigerantflood back.

CONNECTING THE RETURN AND SUPPLYAIR FLEXIBLE DUCTS

a. The supply duct for all units is twelve inchesin diameter. The return duct may be 12" or14" diameter depending on unit size. (SeeTable on page 4).

Figure 5. Supply Damper

6

Figure 6. Typical Applications

TYPICAL APPLICATIONS

MULTIPLE DUCT APPLICATIONSINGLE DUCT APPLICATION

Ref. No. Description

12" x 20" Return Air

16" x 20" Air Filter

12" x 20" Grille

Supply Damper

12" or 14" Diameter Flex Return Duct

12" Diameter Flex Supply Duct

12" x 12" x 12" “Y” Fitting

1

6

6

4

4

5

23

1

5

23 6

4

17

2

3

4

5

6

7

7

b. The flexible ducts can be connected to thecorresponding fittings with the clamps pro-vided with the ducts. Note: All connectionsshould be leak tight or a loss in coolingcapacity will result.

c. The flexible ducts may be cut to the re-quired length, see instructions packed withduct. Keep all ducts as short and straightas possible. Avoid sharp bends.

d. Ducts may be spliced with sheet metalsleeves and clamps. (See Ducting Instal-lation Accessories below.)

e. Once the inner duct is connected to theproper fitting, the insulation and plasticsleeve should be pulled over the connec-tion and clamped.

f. For homes with multiple supply ducts or forspecial applications, a Y fitting is availableto divide the supply air so it can be ductedto different areas of the home for moreefficient cooling. Note: The Y fitting shouldbe insulated for maximum performance.

Blower Speed — The blower speed is preset atthe factory for operation at the same speed forheating and cooling. For optimum systemperformance and comfort, it may be necessaryto change the factory set speed. To change theblower speed:1. Disconnect all electrical power to the unit

and remove the service panel.2. See Figure 7 for wire color vs. motor speed

guide.3. Place the desired heating blower speed

lead on the "NO" terminal of the blowerrelay. Use another wire tie (field supplied)

to bundle the remaining motor lead up andout of the way.

! CAUTION:To avoid personal injury or propertydamage, make certain that the motorleads cannot come into contact withany uninsulated metal components ofthe unit.

Check all factory wiring per the unit wiringdiagram and inspect the factory wiring connec-tions to be sure none loosened during shippingor installation.

CONDENSATE DRAINA 3/4" condensate fitting extends out of the sideof the unit. The drain trap, shipped in theelectrical compartment, must be installed toprevent water from collecting inside the unit.Thread the elbow provided with the unit into thedrain connection until hand tight. Install the trapinto the fitting and seal the joint. Make sure it islevel. Route the condensate from the trap to asuitable drain. Any connecting tubing or hosemust have the outlet below the trap level forproper drainage.

! WARNING:Turn off electrical power before ser-vicing controls. Severe electricalshock may result unless power isturned off. Unit must be installed incompliance with the National Electri-cal Code (NEC) and local codes.

Figure 9. Power Entry

High Voltage

Low Voltage

Figure 8. Drain Trap

Elbow

P-Trap

Wire Color Motor Speed

Black HighRed Low

Figure 7. Motor Lead Connection

8

ELECTRICAL CONNECTIONS

1. ELECTRICAL SERVICE

High Voltagea. Install a branch circuit disconnect of ad-

equate size per NEC. Locate the discon-nect within sight of the unit.

b. Extend leads through power wiring holeprovided. Connect L1 and L2 directly to thecontactor. (See Figure 9).

c. Ground the air conditioning unit using thegreen grounding screw provided in thecontrol panel.

Low Voltagea. Route 24v control wires through the seal-

ing grommet near the power entrance.b. Connect the control wires to the leads in the

low voltage area. (See Figure 10).

2. OVERCURRENT PROTECTION

In general, the best fuse or breaker for any airconditioner is the smallest size that will permitthe equipment to run under normal use andservice without nuisance trips. Such a device,sized properly, gives maximum equipment pro-tection. The principal reason for specifying atime delay type is to prevent nuisance tripswhen the unit starts.

In the event that a fuse does blow or a breakertrips, always determine the reason. Do notarbitrarily put in a larger fuse or breaker and donot, in any case, exceed the maximum sizelisted on the data label of the unit.

3. LOCATING THE THERMOSTAT

Locate the thermostat away from drafts andslamming doors and place it where there is afree flow of air. Mount on an inside wall approxi-mately five feet from the floor.

Do not locate near a lamp, kitchen range, directsunlight, or in line with air flow from supplyregisters.

a. Connect Cooling Thermostat: Thecooling thermostat available for use withthis system is equipped with a selectorswitch. To shut down the air conditioner,set the selector switch to the OFF position.

Connect the red and yellow wires from theunit to the R and Y terminals respectivelyon the thermostat subbase. Connect thegreen wire to the yellow wire at the unit. Seethe instruction sheet packed with the ther-mostat for detailed methods of mounting.

Note: The cooling-only thermostat mustbe connected to an interlock switch toprevent simultaneous operation of the fur-nace and the air conditioner. (See Figure 1,Page 2.)

b. Connect the Heat-Cool Thermostat:The heat-cool thermostat is equipped witha system HEAT-COOL switch, which pro-vides a positive means of preventing simul-taneous operation of the heating and cool-ing units. The thermostat is also equippedwith an ON-AUTO fan switch which allowsthe home owner to operate the indoorblower when air circulation is desired.

Connect the red, yellow, green and brownlow voltage wires to the R or RC, Y, G andW terminals respectively on the thermo-stat base. The black wire is the 24 voltcommon required on some thermostats.See thermostat instruction sheet for moredetailed information.

Refer to furnace installation instructions forrequired connections and proper heat an-ticipator setting when installing unit with anexternal furnace.

c. If two stage heating is desired, anoptional outdoor thermostat may beinstalled: Connect the thermostat to theorange low voltage wire and the W terminalon the indoor thermostat base (See Figure10). See the thermostat instructions fordetails on setting the outdoor thermostat.

4. ELECTRIC HEAT PACKAGE (OP-TIONAL)

The air conditioner is shipped without an aux-iliary electric heat kit installed. If electric heat isdesired, an accessory Heater Kit must be fieldinstalled. See Specifications Sheet for availablekits and their applications.

• Select the correct size heat package forthe installation.

9

• Follow installation instructions providedwith each heater kit.

• Installation is most easily accomplishedbefore making duct or electrical connec-tions.

• The blower must be set to high speed forelectric heat operation.

SYSTEM OPERATION

1. PRE-START CHECK LIST

The following check list should be observedprior to starting the unit.

Is the unit level? It should be level orslightly slanted toward the drain for propercondensate drainage.

Is the unit installed with the proper clear-ances (See Figure 2)?

Is the wiring correct according to thewiring diagram and electrical codes?

Are all the wiring connections tight? Checkthe condenser fan to make sure it turnsfreely.

Is the overcurrent protection properlysized?

Is the thermostat wired correctly? Is itinstalled in a proper location?

2. START-UP PROCEDURE

a. Set the system switch to the OFF position.b. Dial thermostat setting as high as it will go.c. Turn on power supply at the disconnect

switch.d. Set the system switch to ON or COOL. Set

the temperature setting to below roomtemperature. Verify that the indoor blower,outdoor fan, and compressor are ener-gized and the cooling function starts.

e. Verify that the discharge air grilles areadjusted and the system is balanced.

f. Verify that there are no air leaks in the ductwork.

g. Verify that the condensate drain is properlyinstalled and that it functions correctly.

h. Dial the thermostat higher than room tem-perature. The unit should stop.

i. If using a combination heating-cooling ther-mostat, set to the HEAT position. Proceedto check for correct furnace operation.

j. Verify that the furnace controls and burn-ers or heating elements operate correctly.

k. Instruct the owner on unit operation, filterservicing, and proper thermostat opera-tion.

Figure 10. Low Voltage Connections

REDR

YELLOWY

GREENG

BROWNW

OptionalOutdoor Thermostat

(Field Supplied)

ORANGE

REDR

YELLOWY

GREENG

BROWNW

ORANGE

4 Wire Heat/Cool Thermostat

Two Stage Electric Heat

Single Stage Electric Heat

REDR

YELLOWY

GREEN

BROWN

2 Wire Cooling ThermostatControl Wire Legend

Green - Blower Relay Red - Transformer

Yellow - Cooling 1st Brown - Heating 1st

Orange - Heating 2nd

24V

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Dis

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261

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263

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278

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265

169

280

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296

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173

282

173

298

173

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177

286

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300

177

275

181

290

182

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186

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187

311

191

708298A(Replaces 7082980)

Specifications and illustrations subject to changewithout notice and without incurring obligations.

Printed in U.S.A. (11/03)

¢708298Y¤708298A

INSTALLER

PLEASE LEAVE THESEINSTALLATION INSTRUCTIONS

WITH THE HOMEOWNER.