OWNER’S MANUAL

035-14566-000 REV A Form 550.38-O1Y (899)

CONTENTS

CONGRATULATIONS. . . . . . . . . . . . . . . 2

Y2K COMPLIANCE . . . . . . . . . . . . . . . . 2

THERMOSTATS . . . . . . . . . . . . . . . . . . . 2

COOLING AND HEATING . . . . . . . . . . 2

FAN OPERATION . . . . . . . . . . . . . . . . . 2

START-UP . . . . . . . . . . . . . . . . . . . . . . . . 3

POWER FAILURE . . . . . . . . . . . . . . . . . 3

SYSTEM OPERATION . . . . . . . . . . . . . . 3

MANUAL CHANGE-OVER THERMOSTAT . . . . . . . . . . . . . . . . . . . 3

ELECTRONIC THERMOSTAT . . . . . . . 3

CARE OF SYSTEM . . . . . . . . . . . . . . . . . 3

COIL CARE . . . . . . . . . . . . . . . . . . . . . . 4

CARE OF FAN MOTORS . . . . . . . . . . . 4

SERVICE CALLS . . . . . . . . . . . . . . . . . 4

FILTER CARE . . . . . . . . . . . . . . . . . . . . 4

CLEARANCES . . . . . . . . . . . . . . . . . . . 4

PARTS INFORMATION. . . . . . . . . . . . . 4

COMFORT ASSURANCE . . . . . . . . . . . 4

EFFICIENCY DO’S & DONT’S . . . . . . . . 4

�STELLAR

AIR CONDITIONING UNIT

SPLIT-SYSTEM COOLING

MODELS: 10 SEER H*DB012 - 7611 SEER H*DE024 - 6012 SEER H*DH018 - 6050 Hz H*DA036-076

035-14566-000 REV A (899) 550.38-O1Y

2 Unitary Products Group

Y2K COMPLIANCE

All York thermostats and system controlboards for the Stellar™ series are Y2Kcompliant.

THERMOSTATS

YOUR KEY TO COMFORT

Though thermostats may vary widely inappearance they are all designed toperform the same basic function, tocontrol the operation of your air condi-tioning system. Regardless of size orshape, each thermostat will feature atemperature indicator; a dial, arm orpush button for selection of the desiredtemperature; a fan switch to choose theindoor fan operation; and a comfortswitch for you to select the systemmode of operation.

Only York approved thermostats havebeen tested and are fully compatiblewith York designed equipment. Pleasebe aware that many different thermo-stats operate on batteries or “powerstealing” principals. York can not sup-port such models to be trouble freewhen used with the Stellar series units.

The following illustrations and discus-sion will aid you to determine which typeof thermostat you have for your system.

A complete operating instruction is pro-vided by the manufacturer for each ther-mostat. Familiarize yourself with itsproper operation to obtain the maxiumcomfort with a minimum of energy con-sumption.

COOLING ONLY

If your air conditioning system isdesigned to provide only cooling, withno capability for heating operation, atwo-stage cooling only thermostat, witha manual, two-position “Cool” and “Off”comfort switch is all that is required forsystem operation.

NOTE: If you have an independentheating system (with a separate ther-mostat), always be sure the heatingcontrol is turned “Off” before turning onthe cooling system.

COOLING AND HEATING

If your system has been designed toallow both cooling and heating opera-tion, you may have either a manualchange-over type, or a programmableelectronic type thermostat .

MANUAL CHANGE-OVER

Manual change-over simply means thatthe comfort switch must be manuallypositioned every time you wish to switchfrom the cooling to heating or heating tocooling modes of operation.

PROGRAMMABLE ELECTRONIC

THERMOSTATS

The computerized electronic thermostatis actually a sophisticated electronicversion of a manual change-over type.This thermostat includes features whichallow “set-back” temperature variationsfor periods of sleep, or while you areaway during the day, and means energysavings for you. The thermostat alsofeatures a digital clock.

FAN OPERATION SELECTION

A multi-position fan switch allows you tochoose the type of fan operation of theindoor fan.

AUTO

With the thermostat fan switch set to“AUTO”, the fan will run intermittently asrequired for either heating or cooling.This position will provide the lowest op-erating cost. If you purchased one the ofthe York thermostats, they have an

FIGURE 1: PROGRAMMABLE ELECTRONIC THERMOSTAT

FIGURE 2: PROGRAMMABLE ELECTRONIC THERMOSTAT

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035-14566-000 REV A (899) 550.38-O1Y

Unitary Products Group 3

Intelligent fan mode which continuallycirculates the air during occupiedmodes or when you are at home, andcan cycle the fan during unoccupiedmode or during the night while yousleep to further conserve energy.

ON

CONTINUOUS FAN OPERATION: Withthe thermostat fan switch set to “ON”,the indoor fan will not shut off. However,the cooling and heating systems will stilloperate as required by room tempera-tures. This provides continuous air filter-ing and more even temperaturedistribution to all conditioned spaces.

FAN ONLY OPERATION: On moderatedays, usually during spring and fall,when neither heating nor cooling isrequired, you may want to run only thefan to ventilate, circulate and filter theair in your home or building. Set thecomfort control switch to “OFF” and thefan switch to “ON”. Be sure to return theswitches to their original positions fornormal operation.

START-UP

The comfort control switch is assumedto be in the “OFF” position. If the mainpower supply to the outdoor and indoorunits is off, turn the appropriate discon-nects to the “ON” position. Place thesystem into operation as follows:

1. Set temperature adjustment to thedesired temperature on your thermo-stat.

COOLING - The higher the setting, thelower the amount of energy consumed.The National Bureau of Standards rec-commends a setting of 78 °F.

HEATING - The lower the setting, thelower the amount of energy consumed.

Federal guidelines recommend a set-ting of 65 °F or lower.

NOTE: if your cooling and heating tem-perature adjustments are separate, besure to set both.

2. After considering “Fan OperationSelection” above, select and set the fanoperation mode you desire.

3. Move the comfort control switch tothe desired mode of operation (Coolingor Heating) found on your particularthermostat.

POWER FAILURE

When accidents, wind storms, etc. dis-rupt electrical power supply to yourhouse, switch thermostat to “OFF” posi-tion. CAUTION: if the power was offmore than 8 hours DO NOT switch to“COOLING” or “AUTO” until electricalpower has been re-established for 8hours.

SYSTEM OPERATIONMANUAL CHANGE-OVER THERMOSTAT

COOLING YOUR HOME - With thecomfort control switch in the “COOL”position, the system will operate as fol-lows: When the indoor temperaturerises above the level indicated by thetemperature adjustment setting, thesystem will start. The outdoor unit willoperate and the indoor fan will circulatethe cooled, filtered air. When the roomtemperature is lowered to the settingselected, the system will shut off. HEAT-ING YOUR HOME - If your systemincludes a heating unit and the comfortcontrol switch is in the “HEAT” position,the system will operate as follows:When the indoor temperature dropsbelow the level indicated by the temper-ature adjustment setting, the system willstart. The heating system will operateand the indoor fan will circulate the fil-tered air. When the room temperaturerises to the setting selected, the systemwill shut off. Whether heating or cooling,the fan will continue to operate if the fanswitch was set in the “ON or Intelligent”position. The “AUTO” setting on the fan

switch will allow the fan to shut off whenyour system does.

ELECTRONIC THERMOSTAT

The computerized electronic thermo-stat, when programmed, will functionautomatically to operate the system asfollows: When the indoor temperaturerises above the higher (COOL) setting,the outdoor unit will operate and theindoor fan will circulate the cooled, fil-tered air. When the room temperature islowered to the selected level, the sys-tem will shut off. The indoor fan willeither shut off or run continuously,depending upon your choice of fanswitch setting. When the indoor temper-ature is lowered to the selected level,the system will shut off. The indoor fanwill either shut off or run continuously,depending upon your choice of fanswitch setting. When the indoor temper-ature drops below the lower (HEAT) set-ting, the heating system will operate,and the indoor fan will circulate theheated, filtered air. When the indoortemperature rises to the selected set-ting, the system will shut off.

CARE OF SYSTEMYORK strongly recommends regularperiodic preventative maintenance onthis equipment. The person mostfamiliar with the equipment in yourH.V.A.C. system is a YORK dealer.The YORK dealer can ensure yourmaintenance program meets the con-ditions of the “YORK Warranty”, maxi-mize the efficiency of the equipment,and service your unit within the feder-ally mandated guidelines with regardto unlawful discharge of refrigerantsinto the atmosphere.

COIL CARE

Keep the outdoor unit free of foliage,grass clippings, leaves, paper, and anyother material which could restrict theproper air flow in an out of the unit. Thecoil may be vacuumed to remove anydebris from between the fins. If the coilbecomes excessively dirty, turn themain disconnect switch to “Off” andwash the coil with your garden hose.Avoid getting water into the fan motor

Do not operate this unitwhen outdoor temperaturesare below 60°F as this willcause damage to the unit.

035-14566-000 REV A (899) 550.38-O1Y

Heating and Air ConditioningUnitary Products Group5005 York Drive, Norman, Oklahoma 73069Subject to change without notice. Printed in U.S.A.

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CARE OF FAN MOTORS

Some fan motors are provided withlubrication ports. Inspect your indoorand outdoor units to determine whetheror not lubrication ports are provided.The fan motor is shipped with an oil sup-ply which will last for several yearsunder normal operating conditions.After this time, each motor bearingshould be oiled with 10 - 15 drops(approximately 1/4 teaspoon) of SAE 20non-detergent electric motor oil or auto-mobile oil. DO NOT use definite pur-pose oils such as sewing machine,cleaning, rust preventative, cutting,household, etc.

SERVICE CALLS

There are a few instances where theuser can avoid unnecessary servicecalls. If unit stops functioning properlycheck the following items before callingyour YORK servicing dealer:

1. Indoor section for dirty filter.

2. Outdoor section for leaf or debrisblockage. Eliminate problem, turn offthe thermostat for 10 seconds andattempt start. Wait 5 minutes. If systemdoes not start, call your YORK servicingdealer.

FILTER CARE

Inspect the air filter(s) at least once amonth. If they are dirty, wash reusablefilters with a mild detergent per manu-facturer’s recommendations. Replacedisposable filters with new filters. Installthe clean filters with “air flow” arrow inthe same direction as the air flow in yourduct. Filters should be clean to assuremaximum efficiency and ade-quate aircirculation.

CLEARANCES

The minimum clearances shown belowmust be maintained should any patio oryard improvements be done around theoutdoor unit.

* Service Access Panel

PARTS INFORMATION

Replacement parts are available fromlocal YORK contractor/dealer or thenearest YORK distribution center.

COMFORT ASSURANCE

Special warranty packages (calledComfort Assurance) are available thruyour contractor. These packagesreduce the potential cost of service callsfollowing the first year of operation onyour cooling (or heating/cooling) sys-tem.

SOME EFFICIENCY DO’S & DON’TS

DON’T heat or cool unused householdarea. Reduce supply and return air flowto a minimum in areas which are not liv-ing spaces (storage rooms, garages,basements, etc).

DON’T be a “thermostat jiggler”. Movingyour thermostat setting will not makeyour system heat or cool any faster.Adjust your thermostat to a comfortablesetting and leave it there.

DON’T restrict air circulation. Placingfurniture, rugs, etc. in such a way thatthey interfere with air vents will makeyou system work harder to achieve acomfortable temperature level. Thisrequires more energy, which meansgreater cost to you.

DON’T heat or cool when you are away.If you are going to be away for a day ormore, re-adjust your thermostat accord-ingly. Your furniture is far less demand-ing than you are when it comes tocomfort levels. However, don’t expectthe system to restore comfort conditionsimmediately upon returning home. It willtake a little time.

DON’T locate lamps or other heat-pro-ducing appliances (radios, TV’s, heat-ers, etc.) near your thermostat. Theheat from these items will give yourthermostat “false information” about thetem-perature in the room.

DO select a comfortable thermostat set-ting, but keep in mind that moderation intemperature selection will save energy.

DO turn on your kitchen exhaust fanwhen cooking and your bathroom ex-haust fan when showering. Also, makesure your clothes dryer is properlyvented. If these items are neglected, anexcess heat and humidity condition maybe created, causing your air condition-ing system to run longer.

DO set your thermostat a few degreeslower than normal several hours beforeentertaining a large group of people in arelatively small area. People give off aconsiderable amount of heat and mois-ture in a closed area.

DO keep drapes and venetian blindsclosed when practical. These items pro-vide insulation against heat loss/gain.

DO contact a qualified service person tomake repairs or adjustments to yoursystem. He has been trained to performthis service.

TOP 48" SIDES 12"

REAR 12" FRONT * 24"