2100-508(F)

Manual 2100-508FPage 1 of 25

INSTALLATION INSTRUCTIONS

WALL MOUNTEDPACKAGE AIR CONDITIONERS

MODELSW17A1 W17L1W18A1 W18L1W24A1 W24L1W30A1 W30L1W36A1 W36L1W42A1 W42L1W48A1 W48L1W60A1 W60L1W70A1 W70L1

Manual : 2100-508FSupersedes: 2100-508EFile: Volume III Tab 16Date: 12-15-11

Bard Manufacturing Company, Inc.Bryan, Ohio 43506

Since 1914...Moving ahead just as planned.


Contents

FiguresFigure 1 Fresh Air Damper Assembly ................... 5Figure 2 Unit Dimensions ...................................... 7Figure 3A Mounting Instructions .............................. 8Figure 3B Mounting Instructions - W17 – 36 .............. 9Figure 3C Mounting Instructions - W42, 48, 60, 70 ...10Figure 4 Electric Heat Clearance .........................11Figure 5 Wall Mounting Instructions .................... 12Figure 6 Wall Mounting Instructions .................... 12Figure 7 Common Wall Mounting Installations .... 13Figure 8 Fan Blade Setting ................................. 18

TablesTable 1 Fan Blade Dimensions .......................... 18Table 2 Cooling Pressure .................................. 19Table 3 Electrical Specifications W**A .............. 20Table 4 Electrical Specifications W**L ............... 21Table 5 Recommended Airflow .......................... 22Table 6 Indoor Blower Performance .................. 22Table 7 Maximum ESP Electric Heat Only ........ 22Table 8 Electric Heat ......................................... 23Table 9 Optional Accessories ............................ 24Table 10 Vent & Control Options ......................... 25

Getting Other Information and Publications 3

Wall Mount General InformationWall Mount Model Nomenclature ............................ 4Shipping Damage .................................................... 4General ................................................................ 4Duct Work ................................................................ 5Filters ................................................................ 5Fresh Air Intake ....................................................... 5Condensate Drain .................................................... 5

Installation InstructionsWall Mounting Information ....................................... 6Mounting the Unit .................................................... 6Clearances Required ............................................... 6Minimum Clearances ............................................... 6Wiring – Main Power ............................................. 14Wiring – Low Voltage Wiring ................................. 14

Start UpGeneral .............................................................. 15Topping Off System Charge................................... 15Safety Practices ..................................................... 15Important Installer Note ......................................... 16High Pressure Switch ............................................ 16Three Phase Scroll Compressor ............................ 16Phase Monitor ....................................................... 16Condenser Fan Operation ..................................... 16Service Hints ......................................................... 16Sequence of Operation .......................................... 17Compressor Control Module .................................. 17Adjustments ........................................................... 17Pressure Service Ports .......................................... 17

TroubleshootingFan Blade Setting Dimensions .............................. 18Removal of Fan Shroud ......................................... 18Refrigerant Charge ................................................ 18


GETTING OTHER INFORMATION AND PUBLICATIONS

These publications can help you install the airconditioner or heat pump. You can usually find these atyour local library or purchase them directly from thepublisher. Be sure to consult current edition of eachstandard.

National Electrical Code ...................... ANSI/NFPA 70

Standard for the Installation .............. ANSI/NFPA 90Aof Air Conditioning and Ventilating Systems

Standard for Warm Air ...................... ANSI/NFPA 90BHeating and Air Conditioning Systems

Load Calculation for ............................ ACCA Manual JResidential Winter and Summer Air Conditioning

Duct Design for Residential .............. ACCA Manual DWinter and Summer Air Conditioning and EquipmentSelection

FOR MORE INFORMATION, CONTACTTHESE PUBLISHERS:

ACCA Air Conditioning Contractors of America1712 New Hampshire Ave. N.W.Washington, DC 20009Telephone: (202) 483-9370Fax: (202) 234-4721

ANSI American National Standards Institute11 West Street, 13th FloorNew York, NY 10036Telephone: (212) 642-4900Fax: (212) 302-1286

ASHRAE American Society of Heating, Refrigerationand Air Conditioning Engineers, Inc.1791 Tullie Circle, N.E.Atlanta, GA 30329-2305Telephone: (404) 636-8400Fax: (404) 321-5478

NFPA National Fire Protection AssociationBatterymarch ParkP.O. Box 9101Quincy, MA 02269-9901Telephone: (800) 344-3555Fax: (617) 984-7057


WALL MOUNT GENERAL INFORMATION

AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE

W 42 A 1 – A 10 X X X X X A

NOTE: Vent options X, B and M are without exhaust capability. May require separate field supplied barometric relief in building.

SHIPPING DAMAGEUpon receipt of equipment, the carton should bechecked for external signs of shipping damage. Ifdamage is found, the receiving party must contact thelast carrier immediately, preferably in writing,requesting inspection by the carrier’s agent.

GENERALThe equipment covered in this manual is to be installedby trained, experienced service and installationtechnicians.

The refrigerant system is completely assembled andcharged. All internal wiring is complete.

The unit is designed for use with or without duct work.Flanges are provided for attaching the supply and returnducts.

These instructions explain the recommended method toinstall the air cooled self-contained unit and theelectrical wiring connections to the unit.

These instructions and any instructions packaged withany separate equipment required to make up the entireair conditioning system should be carefully read beforebeginning the installation. Note particularly “StartingProcedure” and any tags and/or labels attached to theequipment.

While these instructions are intended as a generalrecommended guide, they do not supersede any nationaland/or local codes in any way. Authorities havingjurisdiction should be consulted before the installation ismade. See Page 3 for information on codes andstandards.

Size of unit for a proposed installation should be basedon heat loss calculation made according to methods ofAir Conditioning Contractors of America (ACCA). Theair duct should be installed in accordance with theStandards of the National Fire Protection Associationfor the Installation of Air Conditioning and VentilatingSystems of Other Than Residence Type, NFPA No.90A, and Residence Type Warm Air Heating and AirConditioning Systems, NFPA No. 90B. Where localregulations are at a variance with instructions, installershould adhere to local codes.

KWMODEL NUMBER CONTROL MODULES

(See Spec. Sheet S3397)

VOLTS & PHASEA - 230/208/60/1B - 230/208/60/3C - 460/60/3

REVISIONS

VENTILATION OPTIONSX - Barometric Fresh Air Damper (Standard)B - Blank-off PlateM - Motorized Fresh Air DamperV - Commercial Ventilator - Motorized with ExhaustE - Economizer (Internal) - Fully Modulating with ExhaustR - Energy Recovery Ventilator - Motorized with Exhaust

(See Spec. Sheet S3397)

FILTER OPTIONSX - One Inch Throwaway (Standard)W - One Inch WashableP - Two Inch Pleated

COLOR OPTIONSX - Beige (Standard)1 - White4 - Buckeye Gray5 - Desert Brown6 - Dark BronzeA - AluminumS - Stainless Steel

COIL OPTIONSX - Standard1 - Phenolic Coated Evaporator2 - Phenolic Coated Condenser3 - Phenolic Coated Evaporator

and Condenser

OUTLET OPTIONSX - Front (Standard)T - Top Outlet (W30A, W36A Only)

CAPACITY18 - 1½ Ton24 - 2 Ton30 - 2½ Ton36 - 3 Ton42 - 3½ Ton48 - 4 Ton60 - 5 Ton70 - 6 Ton

A - Right Hand Air ConditionerL - Left Hand Air Conditioner


DUCT WORKAll duct work, supply and return, must be properly sizedfor the design airflow requirement of the equipment. AirConditioning Contractors of America (ACCA) is anexcellent guide to proper sizing. All duct work or portionsthereof not in the conditioned space should be properlyinsulated in order to both conserve energy and preventcondensation or moisture damage.

Refer to Maximum ESP of operation Electric Heat Table 6.

Design the duct work according to methods given by the AirConditioning Contractors of America (ACCA). When ductruns through unheated spaces, it should be insulated with aminimum of one inch of insulation. Use insulation with avapor barrier on the outside of the insulation. Flexible jointsshould be used to connect the duct work to the equipment inorder to keep the noise transmission to a minimum.

Models W17 - W24 as approved for zero inch clearance tothe supply duct. For model series W30, W36, W42, W48,W60 and W70 a 1/4 inch clearance to combustible materialfor the first three feet of duct attached to the outlet air frameis required. See Wall Mounting Instructions and Figures 3and 4 for further details.

Ducts through the walls must be insulated and all jointstaped or sealed to prevent air or moisture entering the wallcavity.

Some installations may not require any return air duct. Ametallic return air grille is required with installations notrequiring a return air duct. The spacing between louvers onthe grille shall not be larger than 5/8 inch.

Any grille that meets with 5/8 inch louver criteria may beused. It is recommended that Bard Return Air Grille KitRG2 through RG5 or RFG2 through RFG5 be installedwhen no return duct is used. Contact distributor or factoryfor ordering information. If using a return air filter grille,filters must be of sufficient size to allow a maximumvelocity of 400 fpm.

NOTE: If no return air duct is used, applicable installationcodes may limit this cabinet to installation only in asingle story structure.

FILTERSA 1-inch throwaway filter is standard with each unit.The filter slides into position making it easy to service.This filter can be serviced from the outside by removingthe filter access panel. A 1-inch washable filter and 2-inch pleated filter are also available as optionalaccessories. The internal filter brackets are adjustableto accommodate the 2-inch filter by bending two (2)tabs down on each side of the filter support bracket.

FRESH AIR INTAKEAll units are built with fresh air inlet slots punched inthe service door.

If the unit is equipped with a fresh air damper assembly,the assembly is shipped already attached to the unit.The damper blade is locked in the closed position. Toallow the damper to operate, the maximum andminimum blade position stops must be installed. SeeFigure 1.

All capacity, efficiency and cost of operationinformation is based upon the fresh air blank-off plate inplace and is recommended for maximum energyefficiency.

The blank-off plate is available upon request from thefactory and is installed in place of the fresh air dampershipped with each unit.

CONDENSATE DRAINA plastic drain hose extends from the drain pan at thetop of the unit down to the unit base. There areopenings in the unit base for the drain hose to passthrough. In the event the drain hose is connected to adrain system of some type, it must be an open or ventedtype system to assure proper drainage.

FIGURE 1FRESH AIR DAMPER


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NOTE: For side by side installation of two (2) W**A models theremust be 20" between units. This can be reduced to 15" by usinga W**L model (left side compressor and controls) for the left unitand WA (right side compressor and controls) for right unit.See W**A Specification S3397 & W**L Specification S3400.

INSTALLATION INSTRUCTIONS

WARNINGFailure to provide the 1/4 inch clearancebetween the supply duct and a combustiblesurface for the first 3 feet of duct can result infire causing damage, injury or death.

WALL MOUNTING INFORMATION1. Two holes for the supply and return air openings

must be cut through the wall as shown in Figure 3.

2. On wood frame walls, the wall construction must bestrong and rigid enough to carry the weight of theunit without transmitting any unit vibration.

3. Concrete block walls must be thoroughly inspectedto insure that they are capable of carrying the weightof the installed unit.

MOUNTING THE UNIT1. These units are secured by wall mounting brackets

which secure the unit to the outside wall surface atboth sides. A bottom mounting bracket, attached toskid for shipping, is provided for ease of installation,but is not required.

2. The unit itself is suitable for 0 inch clearance, butthe supply air duct flange and the first 3 feet ofsupply air duct require a minimum of 1/4 inchclearance to combustible material for model seriesW30, W36, W42, W48, W60 and W70. However, itis generally recommended that a 1-inch clearance isused for ease of installation and maintaining therequired clearance to combustible material. SeeFigure 3 for details on opening sizes.

3. Locate and mark lag bolt locations and bottommounting bracket location. See Figure 3.

4. Mount bottom mounting bracket.

5. Hook top rain flashing, attached to front - right ofsupply flange for shipping, under back bend of top.

6. Position unit in opening and secure with 5/16 lagbolts; use 7/8 inch diameter flat washers on the lagbolts.

7. Secure rain flashing to wall and caulk across entirelength of top. See Figure 3.

8. For additional mounting rigidity, the return air andsupply air frames or collars can be drilled andscrewed or welded to the structural wall itself(depending upon wall construction). Be sure toobserve required clearance if combustible wall.

9. On side-by-side installations, maintain a minimumof 20 inches clearance on right side to allow accessto control panel and heat strips, and to allow properairflow to the outdoor coil. Additional clearancemay be required to meet local or national codes.


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All dimensions are in inches. Dimensional drawings are not to scale.

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FIGURE 4ELECTRIC HEAT CLEARANCE

W30A1, W30L1, W36A1, W36L1, W42A1, W42L1, W48A1, W48L1, W60A1, W60L1, W70A1, W70L1

WARNINGA minimum of 1/4 inch clearance must be maintained betweenthe supply air duct and combustible materials. This is requiredfor the first 3 feet of ducting.

It is important to insure that the 1/4 inch minimum spacing ismaintained at all points.

Failure to do this could result in overheating the combustiblematerial and may result in a fire causing damage, injury or death.

SIDE SECTION VIEW OF SUPPLY AIR DUCT FORWALL MOUNTED UNIT SHOWING 1/4 INCHCLEARANCE TO COMBUSTIBLE SURFACES.


FIGURE 5WALL MOUNTING INSTRUCTIONS

FIGURE 6WALL MOUNTING INSTRUCTIONS

DUCT

OPENINGRETURN AIR

SUPPLY AIR

WOOD FRAME WALL INSTALLATION

OPENING

WALL BEFORE

MOUNT ON UNIT

OPENING

BEFORE INSTALLATION

BOTTOM MOUNTING

CONCRETE BLOCK WALL INSTALLATION

BRACKET. MOUNT ON

OPENING

WOOD OR STEEL SIDING

OPENING

INSTALLING UNIT.

RETURN AIR

WALL STRUCTURE

RETURN AIR

SUPPLY AIR

FACTORY SUPPLIEDRAIN FLASHING.

SUPPLY AIR

MIS-548 ASIDE VIEW

I

A

C

K

E + 1.000

B

1.000

I

A

C

K

E + 1.000

B

1.000

I

A

C

K

E + 1.000

B

1.000

I

A

C

K

E + 1.000

B

1.000

I

A

C

K

E + 1.000

B

1.000

I

A

C

K

E + 1.000

B

1.000

I

A

C

K

E + 1.000

B

1.000

I

A

C

K

E + 1.000

B

1.000

I

A

C

K

E + 1.000

B

1.000

I

A

C

K

E + 1.000

B

1.000

I

A

C

K

E + 1.000

B

1.000

I

A

C

K

E + 1.000

B

1.000

I

A

C

K

E + 1.000

B

1.000

I

A

C

K

E + 1.000

B

1.000

I

A

C

K

E + 1.000

B

1.000

I

A

C

K

E + 1.000

B

1.000

I

A

C

K

E + 1.000

B

1.000

RETURN DUCT

L2 x 6

PLATE OF WALL

ATTACH TO BOTTOM

1.000" CLEARANCE

C

STRUCTURAL STEEL

OVER FRAME

2 x 4'S, 2 x 6'S &/OR

EXTERIOR FINISH WALL

OPENING

1.000" CLEARANCE

OPENING

SUPPLY DUCT

INTERIOR FINISHED WALL

ATTACH TO TOP

FRAMING MATERIAL

PLATE OF WALL

OVER FRAME

IF REQUIRED

THIS STRUCTURAL MEMBERLOCATED TO MATCH STUDSPACING FOR REST OF WALL.A SECOND MEMBER MAY BEREQUIRED FOR SOME WALLS.

IF REQUIRED

ALL AROUND DUCT

ALL AROUND DUCT

SEE UNIT DIMENSIONS, FIGURE 2,FOR ACTUAL DIMENSIONS.

MIS-549 A

SEE FIGURE 3 – MOUNTING INSTRUCTIONS


FIGURE 7COMMON WALL MOUNTING INSTALLATIONS

LOWERED

RAISED FLOOR

RAFTERS

SUPPLY AIR

CEILING SURFACE

WALL SLEEVE

RETURN AIRCLOSET WALL

GRILLE

FLASHING

RETURN AIR

FLASHING

SUPPLY DUCT MAYBE LOCATED IN AN ATTICOR BELOW CEILING RAFTERS AS SHOWN

SUPPLY DUCT MAY BE LOCATED IN AN ATTIC

SURFACE

RAFTERS

FINISHED CEILING

SUPPLY AIR DUCT

WALL

OPENING W/ GRILLE

SUPPLY DUCT MAYBE LOCATED IN AN ATTICOR BELOW CEILING RAFTERS AS SHOWN

CEILING

RAIN

RETURN AIR

SLEEVEWALL

SUPPLY AIR DUCT

RAFTERSRAFTERS

RETURN AIROPENING W/ GRILLE

RAIN

FALSE WALL INSTALLATION

DUCTED SUPPLY

GRILLEOUTSIDE

SPACE

FALSE WALL

RETURN AIR GRILLEOUTSIDE

OR BELOW CEILING RAFTERS AS SHOWN

FINISHED CEILING SURFACE

RAINFLASHING

RAINFLASHING

RETURN AT UNIT NO DUCT

WALL

SUPPLY AIR DUCT

CLOSET INSTALLATION

RETURN AIR

FINISHED

FINISHED CEILING SURFACE

MIS-550 B

FREE AIR FLOW

OUTSIDEWALL

OUTSIDEWALL

SUPPLY AIR DUCTW/ GRILLE


WIRING – MAIN POWERRefer to the unit rating plate for wire sizing informationand maximum fuse or “HACR” type circuit breakersize. Each outdoor unit is marked with a “MinimumCircuit Ampacity”. This means that the field wiringused must be sized to carry that amount of current.Depending on the installed KW of electric heat, theremay be two field power circuits required. If this is thecase, the unit serial plate will so indicate. All modelsare suitable only for connection with copper wire. Eachunit and/or wiring diagram will be marked “Use CopperConductors Only”. These instructions must be adheredto. Refer to the National Electrical Code (NEC) forcomplete current carrying capacity data on the variousinsulation grades of wiring material. All wiring mustconform to NEC and all local codes.

The electrical data lists fuse and wire sizes (75° Ccopper) for all models including the most commonlyused heater sizes. Also shown are the number of fieldpower circuits required for the various models withheaters.

The unit rating plate lists a “Maximum Time DelayRelay Fuse” or “HACR” type circuit breaker that is tobe used with the equipment. The correct size must beused for proper circuit protection and also to assure thatthere will be no nuisance tripping due to the momentaryhigh starting current of the compressor motor.

The disconnect access door on this unit may be lockedto prevent unauthorized access to the disconnect. Toconvert for the locking capability, bend the tab locatedin the bottom left-hand corner of the disconnect openingunder the disconnect access panel straight out. This tabwill now line up with the slot in the door. When shut, apadlock may be placed through the hole in the tabpreventing entry.

See “Start Up” section for important information onthree phase scroll compressor start ups.

See Tables 3 & 4 for Electrical Specifications.

WIRING – LOW VOLTAGE WIRING230/208V, 1 phase and 3 phase equipment dual primaryvoltage transformers. All equipment leaves the factorywired on 240V tap. For 208V operation, reconnect from240V to 208V tap. The acceptable operating voltagerange for the 240 and 208V taps are:

TAP RANGE240 253 – 216208 220 – 187

NOTE: The voltage should be measured at the field powerconnection point in the unit and while the unit isoperating at full load (maximum amperageoperating condition).

For wiring size and connections, refer to Wiring Manual2100-507.


START UP

THESE UNITS REQUIRE R-410AREFRIGERANT AND POLYOLESTER OIL.

GENERAL:1. Use separate service equipment to avoid cross

contamination of oil and refrigerants.2. Use recovery equipment rated for R-410A

refrigerant.3. Use manifold gauges rated for R-410A (800 psi/250

psi low).4. R-410A is a binary blend of HFC-32 and HFC-125.5. R-410A is nearly azeotropic - similar to R-22 and

R-12. Although nearly azeotropic, charge withliquid refrigerant.

6. R-410A operates at 40-70% higher pressure thanR-22, and systems designed for R-22 cannotwithstand this higher pressure.

7. R-410A has an ozone depletion potential of zero,but must be reclaimed due to its global warmingpotential.

8. R-410A compressors use polyolester oil.9. Polyol Ester oil is hygroscopic; it will rapidly absorb

moisture and strongly hold this moisture in the oil.10. A liquid line dryer must be used - even a deep

vacuum will not separate moisture from the oil.11. Limit atmospheric exposure to 15 minutes.12. If compressor removal is necessary, always plug

compressor immediately after removal. Purge withsmall amount of nitrogen when inserting plugs.

TOPPING OFF SYSTEM CHARGEIf a leak has occurred in the system, Bard Manufacturingrecommends reclaiming, evacuating (see criteria above),and charging to the nameplate charge. If done correctly,topping off the system charge can be done withoutproblems.With R-410A, there are no significant changes in therefrigerant composition during multiple leaks andrecharges. R-410A refrigerant is close to being anazeotropic blend (it behaves like a pure compound orsingle component refrigerant). The remainingrefrigerant charge, in the system, may be used afterleaks have occurred and then “top-off” the charge byutilizing the pressure charts on the inner control panelcover as a guideline.

REMEMBER: When adding R-410A refrigerant, itmust come out of the charging cylinder/tank as a liquidto avoid any fractionation, and to insure optimal systemperformance. Refer to instructions for the cylinder thatis being utilized for proper method of liquid extraction.

SAFETY PRACTICES:1. Never mix R-410A with other refrigerants.2. Use gloves and safety glasses, Polyol Ester oils can

be irritating to the skin, and liquid refrigerant willfreeze the skin.

3. Never use air and R-410A to leak check; themixture may become flammable.

4. Do not inhale R-410A – the vapor attacks thenervous system, creating dizziness, loss ofcoordination and slurred speech. Cardiacirregularities, unconsciousness and ultimate deathcan result from breathing this concentration.

5. Do not burn R-410A. This decompositionproduces hazardous vapors. Evacuate the area ifexposed.

6. Use only cylinders rated DOT4BA/4BW 400.7. Never fill cylinders over 80% of total capacity.8. Store cylinders in a cool area, out of direct

sunlight.9. Never heat cylinders above 125°F.10. Never trap liquid R-410A in manifold sets, gauge

lines or cylinders. R-410A expands significantlyat warmer temperatures. Once a cylinder or line isfull of liquid, any further rise in temperature willcause it to burst.

WARNINGFailure to conform to these practicescould lead to damage, injury or death.


START UP (Continued)

IMPORTANT INSTALLER NOTEFor improved start up performance wash the indoor coilwith a dish washing detergent.

HIGH PRESSURE SWITCHAll W**A/W**L wall mounted air conditioner seriesmodels are supplied with a remote reset for the high andlow pressure switch. If tripped, this pressure switch maybe reset by turning the thermostat off then back on again.

THREE PHASE SCROLL COMPRESSORSTART UP INFORMATIONScroll compressors, like several other types ofcompressors, will only compress in one rotationaldirection. Direction of rotation is not an issue withsingle phase compressors since they will always startand run in the proper direction.

However, three phase compressors will rotate in eitherdirection depending upon phasing of the power. Sincethere is a 50-50 chance of connecting power in such away as to cause rotation in the reverse direction,verification of proper rotation must be made.Verification of proper rotation direction is made byobserving that suction pressure drops and dischargepressure rises when the compressor is energized.Reverse rotation also results in an elevated sound levelover that with correct rotation, as well as substantiallyreduced current draw compared to tabulated values.

Verification of proper rotation must be made at thetime the equipment is put into service. If improperrotation is corrected at this time, there will be nonegative impact on the durability of the compressor.However, reverse operation for over one hour may havea negative impact on the bearing due to oil pump out.

NOTE: If compressor is allowed to run in reverse rotationfor several minutes, the compressor’s internalprotector will trip.

All three phase compressors are wired identicallyinternally. As a result, once the correct phasing isdetermined for a specific system or installation,connecting properly phased power leads to the sameFusite terminal should maintain proper rotationdirection.

The direction of rotation of the compressor may bechanged by reversing any two line connections to theunit.

PHASE MONITORAll units with three phase scroll compressors areequipped with a 3 phase line monitor to preventcompressor damage due to phase reversal.

The phase monitor in this unit is equipped with twoLEDs. If the Y signal is present at the phase monitorand phases are correct the green LED will light.

If phases are reversed, the red fault LED will be lit andcompressor operation is inhibited.

If a fault condition occurs, reverse two of the supplyleads to the unit. Do not reverse any of the unit factorywires as damage may occur.

CONDENSER FAN OPERATIONApplies to W42, W48, W60 and W70 models only. Thecondenser fan motor on 230/208 volt, one and threephase, 60 HZ units is a two-speed motor that comesfactory wired on high speed for peak performance. Ifambient conditions permit, it can be reconnected to lowspeed (red wire) for lower sound level. See wiringdiagram.

50 HZ models must have fan wired on low speed.These models are factory wired on low speed.

SERVICE HINTS1. Caution owner/operator to maintain clean air filters

at all times. Also, not to needlessly close off supplyand return air registers. This reduces airflowthrough the system, which shortens equipmentservice life as well as increasing operating costs.

2. Check all power fuses or circuit breakers to be surethey are the correct rating.

3. Periodic cleaning of the outdoor coil to permit fulland unrestricted airflow circulation is essential.


SEQUENCE OF OPERATIONCOOLING – Circuit R-Y makes at thermostat pullingin compressor contactor, starting the compressor andoutdoor motor. The G (indoor motor) circuit isautomatically completed on any call for coolingoperation or can be energized by manual fan switch onsubbase for constant air circulation. On a call forheating, circuit R-W1 make at the thermostat pulling inheat contact for the strip heat and blower operation. Ona call for second stage heat, R-W2 makes bringing onsecond heat contactor, if so equipped.

COMPRESSOR CONTROL MODULEThe compressor control module is standard on allmodels covered by this manual. The compressor controlmodule is an anti-short cycle/lockout timer with highand low pressure switch monitoring and alarm relayoutput.

Adjustable Delay On Make And Break TimerOn initial power up or anytime power is interrupted tothe unit, the delay on make period begins, which will be2 minutes plus 10% of the delay on break setting. Whenthe delay on make is complete and the high pressureswitch and low pressure switch is closed, the compressorcontactor is energized. Upon shutdown, the delay onbreak timer starts and prevents restart until the delay onbreak and delay on make periods have expired.

During routine operation of the unit with no powerinterruptions, the compressor will operate on demandwith no delay.

High Pressure Switch and Lockout Sequence

If the high pressure switch opens, the compressorcontactor will de-energize immediately. The lockouttimer will go into a soft lockout and stay in soft lockoutuntil the high pressure switch closes and the delay onbreak time has expired. If the high pressure switchopens again in this same operating cycle, the unit will gointo manual lockout condition and the alarm relay circuitwill energize. Recycling the wall thermostat resets themanual lockout.

Low Pressure Switch, Bypass, and LockoutSequence

If the low pressure switch opens for more than 120seconds, the compressor contactor will de-energize andgo into a soft lockout. Regardless the state of the lowpressure switch, the contactor will reenergize after thedelay on make time delay has expired. If the lowpressure switch remains open, or opens again for longerthan 120 seconds, the unit will go into manual lockoutcondition and the alarm relay circuit will energize.Recycling the wall thermostat resets the manual lockout.

Alarm Relay Output

Alarm terminal is output connection for applicationswhere alarm relay is employed. This terminal ispowered whenever the compressor is locked out due toHPC or LPC sequences as described.

NOTE: Both high and low pressure switch controls areinherently automatic reset devices. The highpressure switch and low pressure switch cut outand cut in settings are fixed by specific airconditioner unit model. The lockout features,both soft and manual, are a function of theCompressor Control Module.

ADJUSTMENTSAdjustable Delay on Make and Delay on BreakTimer

The potentiometer is used to select Delay on Break timefrom 30 seconds to 5 minutes. Delay on Make (DOM)timing on power-up and after power interruptions isequal to 2 minutes plus 10% of Delay on Break (DOB)setting:

0.5 minute (30 seconds) DOB = 123 second DOM1.0 minute (60 seconds) DOB = 126 second DOM2.0 minute (120 seconds) DOB = 132 second DOM3.0 minute (180 seconds) DOB = 138 second DOM4.0 minute (240 seconds) DOB = 144 second DOM5.0 minute (300 seconds) DOB = 150 second DOM

During routine operation of the unit with no powerinterruptions the compressor will operate on demandwith no delay.

Typical Settings for Dual Unit Installation:

Unit 1: DOB set at 2 minutes, and DOM is 132 seconds

Unit 2: DOB set at 4 minutes, and DOM is 144 seconds

PRESSURE SERVICE PORTSHigh and low pressure service ports are installed on allunits so that the system operating pressures can beobserved. A pressure table can be found later in themanual covering all models. It is imperative to matchthe correct pressure table to the unit by model number.See Table 2.


TROUBLESHOOTING

FIGURE 8FAN BLADE SETTING

MIS-1724

TABLE 1FAN BLADE DIMENSION

R-410AREFRIGERANT CHARGEThis unit was charged at the factory with the quantity ofrefrigerant listed on the serial plate. AHRI capacity andefficiency ratings were determined by testing with thisrefrigerant charge quantity.

The following pressure tables show nominal pressuresfor the units. Since many installation specific situationscan affect the pressure readings, this information shouldonly be used by certified technicians as a guide forevaluating proper system performance. They shall notbe used to adjust charge. If charge is in doubt, reclaim,evacuate and recharge the unit to the serial plate charge.

REMOVAL OF FAN SHROUD1. Disconnect all power to the unit.

2. Remove the screws holding both grilles, one on eachside of unit, and remove grilles.

3. Remove screws holding fan shroud to condenser andbottom. Nine (9) screws.

4. Unwire condenser fan motor.

5. Slide complete motor, fan blade, and shroudassembly out the left side of the unit.

6. Service motor/fan as needed.

7. Reverse steps to reinstall.

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"57.1

1L07W/1A07W "57.

FAN BLADE SETTING DIMENSIONSShown in Figure 8 is the correct fan blade setting forproper air delivery across the outdoor coil. Refer toTable 1 for unit specific dimension.

Any service work requiring removal or adjustment inthe fan and/or motor area will require that thedimensions below be checked and blade adjusted in orout on the motor shaft accordingly.


TABLE 2COOLING PRESSURE TABLE

Air Temperature Entering Outdoor Coil °F

Low side pressure ± 4 PSIGHigh side pressure ± 10 PSIG

Tables are based upon rated CFM (airflow) across the evaporator coil. If there is any doubt as to correct operating chargebeing in the system, the charge should be removed, system evacuated and recharged to serial plate charge weight.

NOTE: Pressure table based on high speed condenser fan operation. If condensing pressures appear elevated checkcondenser fan wiring. See “Condenser Fan Operation”.

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TABLE 3

1 Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors.2 Based on 75C copper wire. All wiring must conform to the National Electrical Code and all local codes.3 These “Minimum Circuit Ampacity” values are to be used for sizing the field power conductors. Refer to the National Electrical code (latest version), Article

310 for power conductor sizing.

Caution: When more than one field power circuit is run through one conduit, the conductors must be derated. Pay special attention to note 8 of Table 310regarding Ampacity Adjustment Factors when more than three (3) current carrying conductors are in a raceway.

* Top outlet supply option is available only factory installed and only on the selected models.

IMPORTANT: While this electrical data is presented as a guide, it is important to electrically connect properly sized fuses and conductor wires inaccordance with the National Electrical Code and all local codes.

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51B

81B

3-802/032

1

1

1

2

52

43

35

A/N

53

53

06

A/N

8

8

6

A/N

01

01

01

A/N 43 82 53 03 8 01 01 01

Z0C,00C-1A24W

90C

51C

3-064

1

1

1

31

81

72

51

02

03

41

21

01

41

21

01

Z0A,00A-1A84W

50A

01A

51A

02A

1-802/032

1

1

1

2ro1

2ro1

73

73

95

58

111

05

05

06

09

521

8

8

6

4

2

01

01

01

8

6

95

95

62

25

06

06

03

06

6

6

01

6

01

01

01

01

Z0B,00B-1A84W

90B

51B

81B

3-802/032

1

1

1

2

92

43

25

A/N

04

04

06

A/N

8

8

6

A/N

01

01

01

A/N 43 82 04 03 8 01 01 01

Z0C,00C-1A84W

90C

51C

3-064

1

1

1

41

81

72

02

02

03

21

21

01

21

21

01

Z0A,00A-1A06W

50A

01A

51A

02A

1-802/032

1

1

1

2ro1

2ro1

14

14

95

58

111

06

06

06

09

521

8

8

6

4

2

01

01

01

8

6

95

95

62

25

06

06

03

06

6

6

01

6

01

01

01

01

Z0B,00B-1A06W

90B

51B

81B

3-802/032

1

1

1

2

82

43

35

A/N

04

04

06

A/N

8

8

6

A/N

01

01

01

A/N 43 82 04 03 8 01 01 01

Z0C,00C-1A06W

90C

51C

3-064

1

1

1

51

81

72

02

02

03

21

21

01

21

21

01

Z0A,00A-1A07W

50A

01A

51A

02A

1-802/032

1

1

2ro1

2ro1

2ro1

94

94

95

58

111

06

06

06

09

521

8

8

6

4

2

01

01

01

8

6

95

95

62

25

06

06

03

06

6

6

01

6

01

01

01

01

Z0B,00B-1A07W

90B

51B

81B

3-802/032

1

1

1

2

34

34

35

A/N

06

06

06

A/N

8

8

6

A/N

01

01

01

A/N 34 82 06 03 8 01 01 01

Z0C,00C-1A07W

90C

51C

3-064

1

1

1

32

32

72

03

03

53

01

01

8

01

01

01

Electrical Specifications — W**A Series


TABLE 4

1 Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors.2 Based on 75C copper wire. All wiring must conform to the National Electrical Code and all local codes.3 These “Minimum Circuit Ampacity” values are to be used for sizing the field power conductors. Refer to the National Electrical code (latest version), Article

310 for power conductor sizing.

Caution: When more than one field power circuit is run through one conduit, the conductors must be derated. Pay special attention to note 8 of Table 310regarding Ampacity Adjustment Factors when more than three (3) current carrying conductors are in a raceway.

* Top outlet supply option is available only factory installed and only on the selected models.

IMPORTANT: While this electrical data is presented as a guide, it is important to electrically connect properly sized fuses and conductor wires inaccordance with the National Electrical Code and all local codes.

tiucriCelgniS tiucriClauD

ledoM

detaR

stloV

esahPdna

dleiF.oN

rewoP

stiucriC

3 muminiM

tiucriC

yticapmA

1 mumixaM

esuFlanretxE

.rkrB.tkCro

2 dleiF

rewoP

eziSeriW

2 dnuorG

eriW

3 muminiM

tiucriC

yticapmA

1 mumixaM

esuFlanretxE

.rkrB.tkCro

2 dleiF

rewoP

eziSeriW

2 dnuorG

eziSeriW

A.tkC B.tkC A.tkC B.tkC A.tkC B.tkC A.tkC B.tkC

Z0A,00A-1L81,71W

50A

80A

01A

1-802/032

1

1

1

1

61

03

64

65

02

03

05

06

21

01

8

6

21

01

01

01

Z0A,00A-1L42W

50A

80A

01A

1-802/032

1

1

1

1

12

03

64

65

03

03

05

06

01

01

8

6

01

01

01

01

Z0B,00B-1L42W

60B3-802/032

1

1

51

22

51

52

41

01

41

01

*Z0A,*00A-1L03W

*50A

80A

*01A

51A

1-802/032

1

1

1

1

2ro1

42

23

84

85

48

53

53

05

06

09

8

8

8

6

4

01

01

01

01

8 85 62 06 03 6 01 01 01

*Z0B,*00B-1L03W

*90B

51B

3-802/032

1

1

1

81

33

15

02

53

06

21

8

8

21

01

01

*Z0C,*00C-1L03W

*90C

51C

3-064

1

1

1

11

71

62

51

02

03

41

21

01

41

21

01

*Z0A,*00A-1L63W

*50A

*01A

51A

1-802/032

1

1

1

2ro1

92

23

85

48

53

53

06

09

8

8

6

4

01

01

01

8 85 62 06 03 6 01 01 01

*Z0B,*00B-1L63W

*90B

51B

3-802/032

1

1

1

32

33

15

03

53

06

01

8

6

01

01

01

*Z0C,*00C-1L63W

*90C

51C

3-064

1

1

1

21

71

62

51

02

03

41

01

01

41

01

01

Z0A,00A-1L24W

50A

01A

51A

1-802/032

1

1

1

2ro1

33

33

95

58

05

05

06

09

8

8

6

4

01

01

01

8 95 62 06 03 6 01 01 01

Z0B,00B-1L24W

90B

51B

3-802/032

1

1

1

52

43

35

53

53

06

8

8

6

01

01

01

Z0C,00C-1L24W

90C

51C

3-064

1

1

1

31

81

72

51

02

03

41

21

01

41

21

01

Z0A,00A-1L84W

50A

01A

51A

1-802/032

1

1

1

2ro1

73

73

95

58

05

05

06

09

8

8

6

4

01

01

01

8 95 62 06 03 6 01 01 01

Z0B,00B-1L84W

90B

51B

3-802/032

1

1

1

92

43

25

04

04

06

8

8

6

01

01

01

Z0C,00C-1L84W

90C

51C

3-064

1

1

1

41

81

72

02

02

03

21

21

01

21

21

01

Z0A,00A-1L06W

50A

01A

51A

1-802/032

1

1

1

2ro1

14

14

95

58

06

06

06

09

8

8

6

4

01

01

01

8 95 62 06 03 6 01 01 01

Z0B,00B-1L06W

90B

51B

3-802/032

1

1

1

82

43

35

04

04

06

8

8

6

01

01

01

Z0C,00C-1L06W

90C

51C

3-064

1

1

1

51

81

72

02

02

03

21

21

01

21

21

01

Z0A-1L07W

50A

01A

51A

1-802/032

1

1

2ro1

2ro1

94

94

95

58

06

06

06

09

8

8

6

4

01

01

01

8 95 62 06 03 6 01 01 01

Z0B-1L07W

90B

51B

3-802/032

1

1

1

34

34

35

06

06

06

8

8

6

01

01

01

Z0C-1L07W

90C

51C

3-064

1

1

1

32

32

72

03

03

53

01

01

8

01

01

01

Electrical Specifications — W**L Series


TABLE 5RECOMMENDED AIRFLOW

TABLE 6INDOOR BLOWER PERFORMANCE

TABLE 7MAXIMUM ESP OF OPERATION

ELECTRIC HEAT ONLY

Values shown are for units equipped with standard 1-inch throwaway filter or 1-inch washable filter.Derate ESP by .15 for 2-inch pleated filters.

ledoM

detaR

*MFC

detaR

*PSE

dednemmoceR

egnaRwolfriA

deepSyrotcaF

noitcennoC

L71W,A71W

L81W,A81W055 04. 527-575 hgiH

L42W,A42W 008 02. 059-007 hgiH

L03W,A03W 0001 04. 0031-039 hgiH

L63W,A63W 0011 03. 0531-039 hgiH

L24W,A24W 0041 03. 0511-0061 hgiH

L84W,A84W 0551 02. 5821-0571 hgiH

L06W,A06W 0561 03. 5731-0591 hgiH

L07W,A07W 0081 02. 5741-0002 hgiH

.P.S.E

nI

H2O

,L/A71W

,L/A81W

L/A42W

L/A63W,L/A03W L/A84W,L/A24W L/A07W,L/A06W

deepShgiH deepShgiH deepSwoL deepShgiH deepSwoL deepShgiH deepSwoL

yrD

lioC

teW

lioC

yrD

lioC

teW

lioC

yrD

lioC

teW

lioC

yrD

lioC

teW

lioC

yrD

lioC

teW

lioC

yrD

lioC

teW

lioC

yrD

lioC

teW

lioC

0.

1.

2.

3.

4.

5.

0201

069

568

028

537

516

579

509

008

537

056

535

5931

0431

5821

5021

0111

5001

5131

0721

0911

0011

0001

078

059

039

019

558

008

—

539

519

588

038

557

—

5881

0771

5361

0051

0731

0521

0081

5661

0451

0041

5821

0511

0561

0551

0541

0531

0031

—

0061

0051

0041

0031

5711

—

0022

0012

0002

5781

5771

0561

0002

0091

0081

0071

0061

5741

0061

5251

—

—

—

—

0541

5731

—

—

—

—

ledoM,L/A71W

L/A42W,L/A81WL/A63W,L/A03W L/A84W,L/A24W L/A07W,L/A06W

teltuO TNORF TNORF POT TNORF TNORF

deepS elgniS hgiH woL hgiH woL hgiH woL hgiH woL

Z0A-

40A-

50A-

80A-

01A-

51A-

02A-

05.

05.

05.

05.

05.

05.

05.

04.

05.

05.

05.

54.

53.

05.

05.

05.

05.

54.

53.

05.

05.

05.

05.

05.

05.

05.

05.

05.

54.

05.

05.

05.

05.

05.

05.

05.

05.

05.

04.

Z0B-

60B-

90B-

51B-

81B-

05.

05.

05.

05.

05.

54.

05.

04.

05.

03.

05.

54.

05.

04.

05.

05.

05.

05.

05.

05.

05.

05.

05.

05.

05.

05.

05.

05.

05.

05.

Z0C-

60C-

90C-

51C-

05.

05.

05.

54.

05.

05.

04.

53.

05.

54.

05.

04.

05.

05.

05.

05.

05.

05.

05.

05.

05.

05.

05.

05.

* Rated CFM and ESP on high speed tap.


TABLE 8ELECTRIC HEAT

sledoM 1-V042 1-V802 3-V042 3-V802 3-V064

WK spmA HUTB spmA HUTB spmA HUTB spmA HUTB spmA HUTB

4 7.61 05631 4.41 04201

5 8.02 56071 1.81 00821

6 4.41 00502 5.21 06351 2.7 00502

8 3.33 00372 8.82 57402

9 7.12 00603 7.81 03032 8.01 00703

01 6.14 03143 2.63 00652

21 4.41 05904

51 5.26 05215 0.45 00483 2.63 00215 2.13 00483 0.81 00215

81 3.34 03416 5.73 00164

02 2.38 06286 1.27 00215


W17

/18A

1-A

W24

A1-

A

W24

A1-

B

W24

A1-

C

W30

A1-

A

W30

A1-

B

W30

A1-

C

W36

A1-

A

W36

A1-

B

W36

A1-

C

W42

A1-

A

W42

A1-

B

W42

A1-

C

W48

A1-

A

W48

A1-

B

W48

A1-

C

W60

A1-

A

W60

A1-

B

W60

A1-

C

W70

A1-

A

W70

A1-

B

W70

A1-

C

TABLE 9OPTIONAL ACCESSORIES

rebmuNtraP

50A-20AWHE X X

80A-A20WHE X X

01A-A20AWHE X X

60B-42AWHE X

60C-B42HWHE X

50A-30AWHE X X

80A-30AWHE X X

01A-30AWHE X X

51A-30AWHE X X

60B-30AWHE X

60B-A63WHE X

90B-30AWHE X X

51B-73AWHE X X

60C-A30CWHE X X

90C-A30CWHE X X

51C-A30AWHE X X

50A-50AWHE X X

01A-50AWHE X X X X

51A-50AWHE X X X X

02A-50AWHE X X X X

90B-50AWHE X X

51B-50AWHE X X X X

81B-A50WHE X X X X

90C-A50AWHE X X X X

51C-A50AWHE X X X X

50A-06AWHE X X

90B-06AWHE X X

B10-BCMW X

A20-BCMW X

B20-BCMW X

A30-BCMW X

B40-BCMW X

A50-BCMW X X

B50-BCMW X X

B60-BCMW X

A80-BCMW X X

A90-BCMW X X

C10-DPMW X X X X X X X

B90-BCMW X

HE

ATE

R K

ITS

CIR

CU

IT B

REA

KER

(WM

CB

) &P

ULL

DIS

CO

NN

EC

T (W

MP

D)


TABLE 10VENT & CONTROL OPTIONS

W17

, W18

, W24

W30

, W36

W42

, W48

, W60

, W70

rebmuNtraP noitpircseD

41-CMC TDO X X X

51-CMC )esahP-1V032(tiKtratS X X X

32-CMC CDD X X

42-CMC CDD X

82-CMC CAL X X X

2-DAFB dradnatS-repmaDriAhserFcirtemoraB X

2-POB etalPffOknalB X

2-DAFM repmaDriAhserFdezirotoM X

2-VRC nruteRgnirpS-rotalitneVlaicremmoC X

B2-MFIE rezimonocE X

A2-FVRE tloV032-rotalitneVyrevoceRygrenE X




3-SVRC nruteRgnirpS-rotalitneVlaicremmoC X

3-PVRC nruteRrewoP-rotalitneVlaicremmoC X

C3-MFIE rezimonocE X


C3-FVRE tloV064-rotalitneVyrevoceRygrenE X




5-SVRC nruteRgnirpS-rotalitneVlaicremmoC X

5-PVRC nruteRrewoP-rotalitneVlaicremmoC X

C5-MFIE rezimonocE X


C5-FVRE tloV064-rotalitneVyrevoceRygrenE X

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2100-508(F)