MIS-801

Manual No.: 2100-425Supersedes:File: Volume III, Tab 16Date: 01-01-03

© Copyright 2003

Bard Manufacturing CompanyBryan, Ohio 43506

Since 1914...Moving ahead, just as planned.

Models: WA611WA701-BWA701-CWA702-AWA721

WALL MOUNTED PACKAGEDAIR CONDITIONER

INSTALLATIONINSTRUCTIONS

CONTENTS

i

Figures

Figure 1 Unit Dimensions ..................................... 3Figure 2 Blower Damper Assembly ...................... 6Figure 3 Mounting Instructions ............................. 8Figure 4 Wall-Mounting Instructions .................. 10Figure 5 Wall-Mounting Instructions .................. 10Figure 6 Common Wall-Mounting Instructions ....11Figure 7 Electric Heat Clearances ..................... 12Figure 8 Low Voltage Wiring .............................. 13Figure 9 Start-Up Label ...................................... 14Figure 10 Fan Blade Setting ................................ 17

Tables

Table 1 Electric Heat Table ................................. 2Table 2 Dimensions of Basic Unit ....................... 3Table 3 Electrical Specifications ......................... 4Table 4 Operating Voltage Range ...................... 9Table 5 Thermostat Wire Size ............................ 9Table 6 Wall Thermostat and

Subbase Combinations .......................... 9Table 7 Fan Blade Dimensions ......................... 17Table 8 Suction Line Temperatures .................. 17Table 9 CFM and ESP ...................................... 17Table 10 Indoor Blower Performance ................. 17Table 11 Maximum ESP of Operation

Electric Heat Only ................................ 18Table 12 Cooling Pressure ................................. 18Table 13 Optional Accessories ........................... 19

Getting Other Information and PublicationsFor more information, contact these publishers: ..... 1

Wall Mount General InformationAir Conditioner Wall Mount Model Nomenclature .... 2Shipping Damage .................................................... 5General ............................................................... 5Duct Work ............................................................... 5Filters ............................................................... 6Fresh Air Intake ....................................................... 6Condensate Drain .................................................... 6

Installation InstructionsWall Mounting Information ....................................... 7Mounting the Unit .................................................... 7Typical Installations ................................................. 7Wiring – Main Power ............................................. 7Wiring – Low Voltage Wiring ................................. 9

Start UpImportant Installer Note ......................................... 14Crankcase Heaters ................................................ 14High Pressure Switch ............................................ 14Three Phase Scroll Compressor Start UpInformation ............................................................. 14Service Hints ......................................................... 15Sequence of Operation .......................................... 15Compressor Control Module .................................. 15Adjustments ........................................................... 16Phase Monitor ....................................................... 16Pressure Service Ports .......................................... 16

TroubleshootingFan Blade Setting Dimensions .............................. 17Removal of Fan Shroud ......................................... 17Refrigerant Charge ................................................ 17Pressure Chart ...................................................... 18Optional Accessories ............................................. 19

Manual 2100-425Page 1

Getting Other Information and Publications

Manufactured under the following U.S. patent numbers:5,485,878; 5,301,744; 5,002,116; 4,924,934;

4,875,520; 4,825,936

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 andVentilating Systems

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

Load Calculation for ....................... ACCA Manual J orResidential Winter and Manual NSummer Air Conditioning

Low Pressure, Low Velocity .......... ACCA Manual D orDuct System Design for Winter Manual Qand Summer Air Conditioning

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 Refrigerating,and 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

Manual 2100-425Page 2

WALL MOUNT GENERAL INFORMATION

AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE

WA 70 1 – B 09 X X X X X J

TABLE 1ELECTRIC HEAT TABLE

sledoM A-116AW B-116AW C-116AW1-V042 1-V802 3-V042 3-V802 3-V064

WK SPMA HUTB SPMA HUTB SPMA HUTB SPMA HUTB SPMA HUTB

0.5 8.02 004,81 1.81 001,41 --- --- --- --- --- ---0.8 3.33 006,82 8.82 008,12 --- --- --- --- --- ---0.9 --- --- --- --- 7.12 009,13 7.81 053,42 8.01 000,230.01 6.14 054,53 2.63 009,62 --- --- --- --- --- ---

sledoMA-207AW B-107AW

B-127AWC-107AWC-127AW

1-V042 1-V802 3-V042 3-V802 3-V064WK SPMA HUTB SPMA HUTB SPMA HUTB SPMA HUTB SPMA HUTB

0.5 8.02 050,71 1.81 008,21 --- --- --- --- --- ---0.9 --- --- --- --- 7.12 006,03 7.81 030,32 8.01 007,030.01 6.14 031,43 2.63 006,52 --- --- --- --- --- ---0.51 5.26 002,15 1.45 004,83 2.63 002,15 2.13 004,83 3.71 000,740.81 --- --- --- --- 3.34 034,16 5.73 001,64 --- ---0.02 2.38 062,86 1.27 002,15 --- --- --- --- --- ---

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

KW00 – No KW0Z – No KW

w/CircuitBreakeror PullDisconnect

05 – 5 KW09 – 9 KW10 – 10 KW15 – 15 KW18 – 18 KW

VENTILATION OPTIONSX – Barometric Fresh Air Damper

(Standard)B – Blank-off PlateM – Motorized Fresh Air DamperV – Commercial Room Ventilator -

Motorized with ExhaustE – Economizer (Internal) - Fully

Modulating with ExhaustR – Energy Recovery Ventilator -

with Exhaust

COLOR OPTIONSX – Beige

(Standard)1 – White

OUTLET OPTIONSX – Front (Standard)

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

and Condenser

CONTROL MODULESJ – Standard on all

Models

NOTE: For 0KW and circuit breakers (230/208 V) or pull disconnects (460 V) applications, insert 0Z in the KW field of model number.

MODEL NUMBER

CAPACITY61 – 5 Ton70 – 6 Ton72 – 6 TonREVISION

FILTER OPTIONSX – One Inch Throwaway

(Standard)W – One Inch WashableP – Two Inch Pleated

Manual 2100-425

Page 3

FIGURE 1UNIT DIMENSIONS

TABLE 2DIMENSIONS OF BASIC UNIT FOR ARCHITECTURAL AND INSTALLATION REQUIREMENTS (Nominal)

All dimensions in inches.

tinUhtdiW

WhtpeD

DthgieH

H

ylppuS nruteR

E F G I J K L M N O P QA B C B

116AW07AW127AW

24 4/1-22 8/7-49 8/7-9 8/7-92 8/7-51 8/7-92 8/7-34 91 8/5-14 03 61/11-24 73 4/3-44 2/1-24 4/1-3 34 8/7-33 01

MIS-764

Manual 2100-425

Page 4

�

�

�

Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors.Based on 75°C copper wire. All wiring must conform to the National Electric Code (NEC) and all local codes.These "Minimum Circuit Ampacity" values are to be used for sizing the field power conductors. Refer to the National Electric Code (latestversion), Article 310 for power conductor sizing. CAUTION: When more than one filed power conductor circuit is run through oneconduit, the conductors must be derated. Pay special attention to Note * of Table 310 regarding Ampacity Adjustment Factors whenmore than 3 conductors are in a raceway.

TABLE 3ELECTRICAL SPECIFICATIONS

SLEDOM detaR

fo.oNrewoPstiucriC

TIUCRICELGNIS TIUCRICLAUD3

muminiMtiucriCyticapmA

1

mumixaMrevOtnerruCnoitcetorP

2

dleiFeriWeziS

2

dnuorGeriWeziS

3

tiucriCmuminiMyticapmA

1revOmumixaM

tnerruCnoitcetorP

2

eziSeriWdleiF

2

eziSeriWdnuorG

ATKC BTKC ATKC BTKC ATKC BTKC ATKC BTKCZ0A,00A-116AW50A-80A-01A-

1-802/302

1111

34347485

05050606

8886

01010101

ANANANAN

ANANANAN

ANANANAN

ANANANAN

ANANANAN

ANANANAN

ANANANAN

ANANANAN

Z0B,00B-116AW90B- 3-802/032 1

19233

5454

88

0101

ANAN

ANAN

ANAN

ANAN

ANAN

ANAN

ANAN

ANAN

Z0C,00C-116AW90C- 3-064 1

15171

0202

2121

2121

ANAN

ANAN

ANAN

ANAN

ANAN

ANAN

ANAN

ANAN

Z0A,00A-207AW50A-01A-51A-02A-

1-802/302

1112ro12ro1

84849558011

06060609011

88642

01010186

ANANAN9595

ANANAN6225

ANANAN0606

ANANAN0306

ANANAN66

ANANAN016

ANANAN0101

ANANAN0101

Z0B,00B-107AW90B-51B-81B-

3-802/032

1111

63632506

05050606

8866

01010101

ANANANAN

ANANANAN

ANANANAN

ANANANAN

ANANANAN

ANANANAN

ANANANAN

ANANANAN

Z0C,00C-107AW90C-51C-

3-064111

717162

525203

212101

212101

ANANAN

ANANAN

ANANAN

ANANAN

ANANAN

ANANAN

ANANAN

ANANAN

Z0B,00B-127AW90B-51B-81B-

3-802/032

1111

63632506

05050606

8866

01010101

ANANANAN

ANANANAN

ANANANAN

ANANANAN

ANANANAN

ANANANAN

ANANANAN

ANANANAN

Z0C,00C-127AW90C-51C-

3-064111

717162

525203

212101

212101

ANANAN

ANANAN

ANANAN

ANANAN

ANANAN

ANANAN

ANANAN

ANANAN

Manual 2100-425Page 5

SHIPPING DAMAGE

Upon 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.

GENERAL

The equipment covered in this manual is to beinstalled by trained, experienced service andinstallation technicians.

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

The unit is designed for use with or without ductwork. Flanges are provided for attaching the supplyand return ducts.

These instructions explain the recommended methodto install 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 readbefore beginning the installation. Note particularly“Starting Procedure” and any tags and/or labelsattached to the equipment.

While these instructions are intended as a generalrecommended guide, they do not supersede anynational and/or local codes in any way. Authoritieshaving jurisdiction should be consulted before theinstallation is made. See Page 1 for information oncodes and standards.

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

DUCT WORK

All duct work, supply and return, must be properlysized for the design air flow requirement of theequipment. Air Conditioning Contractors of America(ACCA) is an excellent guide to proper sizing. Allduct work or portions thereof not in the conditionedspace should be properly insulated in order to bothconserve energy and prevent condensation or moisturedamage.

Refer to Table 9 for maximum static pressure availablefor duct design.

Design the duct work according to methods given bythe Air Conditioning Contractors of America (ACCA).When duct runs through unheated spaces, it should beinsulated with a minimum of 1 inch of insulation. Useinsulation with a vapor barrier on the outside of theinsulation. Flexible joints should be used to connectthe duct work to the equipment in order to keep thenoise transmission to a minimum.

A 1/4 inch clearance to combustible material for thefirst three feet of duct attached to the outlet air frame isrequired. See Wall Mounting Instructions and Figures4 and 5 for further details.

Ducts through the walls must be insulated and alljoints taped or sealed to prevent air or moistureentering the wall cavity.

Any grille that meets the 5/8 inch louver criteria, maybe used. It is recommended that Bard Return Air GrilleKit RG-2 thru RG-5 or RFG-2 thru RFG-5 be installedwhen no return duct is used. Contact distributor orfactory for ordering information. If using a return airfilter grille, filters must be of sufficient size to allow amaximum velocity of 400 fpm.

NOTE: If no return air duct is used, applicableinstallation codes may limit this cabinet toinstallation only in a single story structure.

CAUTIONSome installations may not require any returnair duct. A metallic return air grille is requiredwith installations not requiring a return airduct. The spacing between louvers on thegrille shall not be larger than 5/8 inches.

Manual 2100-425Page 6

FIGURE 2BLOWER DAMPER ASSEMBLY

MIS-938

FILTERS

A 1 inch throwaway filter is supplied with each unit.The filter slides into position making it easy to service.This filter can be serviced from the outside byremoving the service door. A 1 inch washable filterand 2 inch pleated filter are also available as optionalaccessories. The internal filter brackets are adjustableto accommodate the 2 inch filter by bending down thetabs to allow spacing for the 2 inch filters.

FRESH AIR INTAKE

All units are built with fresh air inlet slots punched inthe service panel.

If the unit is equipped with the fresh air damperassembly, the assembly is shipped already attached tothe unit. The damper blade is locked in the closedposition to allow the damper to operate, the maximumand minium blade position stops must be installed.See Figure 2.

All capacity, efficiency and cost of operationinformation as required for Department of Energy“Energyguide” Fact Sheets is based upon the fresh airblank-off plate in place and is recommended formaximum energy efficiency.

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

CONDENSATE DRAIN

A 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 orvented type system to assure proper drainage.

BLADE IS LOCKEDCLOSED FORSHIPPING

Manual 2100-425Page 7

WALL MOUNTING INFORMATION

1. 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 mustbe strong and rigid enough to carry the weight ofthe unit without transmitting any unit vibration.See Figures 4 and 5.

INSTALLATION INSTRUCTIONS

4. Mount bottom mounting bracket.

5. Hook top rain flashing under back bend of top.Top rain flashing is shipped secured to the rightside of the back.

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 heat strips and control panel and to allow properairflow to the outdoor coil. Additional clearancemay be required to meet local or national codes.

TYPICAL INSTALLATIONS

See Figure 6 for common ways to install the wall-mount unit.

WIRING — MAIN POWER

Refer to the unit rating plate for wire sizinginformation and maximum fuse or “HACR" typecircuit breaker size. Each outdoor unit is marked witha “Minimum Circuit Ampacity”. This means that thefield wiring used must be sized to carry that amount ofcurrent. Depending on the installed KW of electricheat, there may be two field power circuits required. Ifthis is the case, the unit serial plate will so indicate. Allmodels are suitable only for connection with copperwire. Each unit and/or wiring diagram will be marked“Use Copper Conductors Only”. These instructionsmust be adhered to. Refer to the National ElectricalCode (NEC) for complete current carrying capacitydata on the various insulation grades of wiringmaterial. All wiring must conform to NEC and alllocal codes.

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

3. Concrete block walls must be thoroughly inspectedto insure that they are capable of carrying theweight of the installing unit. See Figure 4.

MOUNTING THE UNIT

1. These units are secured by wall mounting bracketswhich secure the unit to the outside wall surface atboth sides. A bottom mounting bracket is providedfor ease of installation.

2. The unit itself is suitable for “0” inch clearance,but the supply air duct flange and the first 3 feet ofsupply air duct require a minimum of 1/4 inchclearance to combustible material. If a combustiblewall, use a minimum of 30-1/2" x 10-1/2"dimensions for sizing. However, it is generallyrecommended that a 1 inch clearance is used forease of installation and maintaining the requiredclearance to combustible material. The supply airopening would then be 32" x 12". SeeFigures 3, 4 and 7 for details.

3. Locate and mark lag bolt locations and bottommounting bracket location. See Figure 4.

WARNINGFire hazard can result if 1/4 inch clearance tocombustible materials for supply air duct isnot maintained. See Figure 3.

WARNINGFailure to provide the 1/4 inch clearancebetween the supply duct and a combustiblesurface for the first 3 feet of duct can result infire.

Manual 2100-425Page 8

FIGURE 3MOUNTING INSTRUCTIONS

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 assurethat there will be no nuisance tripping due to themomentary high starting current of the compressormotor.

The disconnect access door on this unit may be lockedto prevent unauthorized access to the disconnect. To

convert for the locking capability, bend the tab locatedin the bottom left hand corner of the disconnectopening under the disconnect access panel straightout. This tab will now line up with the slot in the door.When shut, a padlock may be placed through the holein the tab preventing entry.

See Start-up section for information on three phasescroll compressor start-ups.

MIS-796

NOTE: It is recommended that a bead of siliconecaulking be placed behind the side mountingflanges and under the top flashing at thetime of installation.

Manual 2100-425Page 9

NOTE: The voltage should be measured at the fieldpower connection point in the unit and while

the unit is operating at full load (maximum amperage operating condition).

Five (5) wires should be run from thermostat subbaseto the 24V terminal board in the unit. A fiveconductor, 18 gauge copper, color-coded thermostatcable is recommended. The connection points areshown in Figure 8.

WIRING — LOW VOLTAGE WIRING

230/208V, 1 phase and 3 phase equipment dualprimary voltage transformers. All equipment leavesthe factory wired on 240V tap. For 208V operation,reconnect from 240V to 208V tap. The acceptableoperating voltage range for the 240 and 208V taps areshown in Table 4 below.

TABLE 4OPERATING VOLTAGE RANGE

PAT EGNAR

V042 612-352

V802 781-022

TABLE 5THERMOSTAT WIRE SIZE

remrofsnarTAV ALF eguaGeriW

mumixaMecnatsiDteeFnI

55 3.2

eguag02eguag81eguag61eguag41eguag21

5406001061052

TABLE 6WALL THERMOSTAT AND SUBBASE COMBINATIONS

tatsomrehT esabbuS serutaeFetanimoderP

200-30481113F78T

300-40480221A935Q

loocegats1,taehegats1no-otua:naFlooc-ffo-taeh:metsyS

140-3048C4308T

--- loocegats1,taehegats1no-otua:naFlooc-ffo-taeh:metsyS

910-30480671C478T

210-40481001A476Q

taehegats2,loocegats1no-otua:naFlooc-otua-taeh:metsyS

120-30484391D478T

210-40481001A476Q

taehegats2,loocegats2no-otua:naFlooc-otua-taeh:metsyS

940-3048083-39F1

--- taehegats2,loocegats2gnimmargorpyad7cinortcelE

340-3048002-MC --- loocegats1,taehegats1

no-otua:naFlooc-ffo-taeh:metsyS

Manual 2100-425Page 10

FIGURE 4WALL-MOUNTING INSTRUCTIONS

FIGURE 5WALL-MOUNTING INSTRUCTIONS

MIS-548

MIS-549

SEE FIGURE 3 — MOUNTING INSTRUCTIONS

SEE UNIT DIMENSIONS, FIGURE 1,FOR ACTUAL DIMENSIONS

SEE FIGURE 1 FORDUCT DIMENSIONS

Manual 2100-425Page 11

FIGURE 6COMMON WALL-MOUNTING INSTALLATIONS

MIS-550

Manual 2100-425Page 12

Side section view of supply air duct forwall mounted unit showing 1/4 inchclearance to combustible surfaces.

FIGURE 7ELECTRIC HEAT CLEARANCE

MIS-277

WARNING• A minimum of 1/4 inch clearance must be maintained between

the 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 fire.

Manual 2100-425Page 13

FIGURE 8LOW VOLTAGE WIRING

Manual 2100-425Page 14

START UP

IMPORTANT INSTALLER NOTE

For improved start-up performance, wash the indoorcoil with a dishwasher detergent.

CRANKCASE HEATERS

WA611, WA70 and WA721 units are provided withcompressor crankcase heat.

The WA611, WA70 and WA721 models have a bandtype heater located around the bottom of thecompressor. This heater is controlled by the crankcaseheater relay. The heater is only energized when thecompressor is not running.

Some form of crankcase heat is essential to preventliquid refrigerant from migrating to the compressor,casing oil pump out on compressor start-up andpossible valve failure due to compressing a liquid.

The decal in Figure 9 is affixed to all WA611, WA70and WA721 units detailing start-up procedure. This isvery important. Please read carefully.

HIGH PRESSURE SWITCH

The WA611, WA70 and WA721 models are suppliedwith a remote reset high pressure switch. If tripped,this pressure switch may be reset by turning thethermostat off then back on again.

THREE PHASE SCROLL COMPRESSORSTART UP INFORMATION

Scroll 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. All threephase units incorporate a phase monitor to ensureproper field wiring. See the Phase Monitor" sectionlater in this manual.

Verification of proper rotation must be made any timea compressor is change or rewired. 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 mayhave a negative impact on the bearing due to oil pumpout.

NOTE: If compressor is allowed to run in reverserotation for several minutes, thecompressor's internal protector will trip.

All three phase ZR3 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.

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 rotations, as well as,substantially reduced current draw compared totabulated values.

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

IMPORTANT

These procedures must be followed atinitial start-up and at any time powerhas been removed for 12 hours orlonger.

To prevent compressor damage which mayresult from the presence of liquidrefrigerant in the compressor crankcase.

1. Make certain the room thermostat is inthe "off" position (the compressor isnot to operate).

2. Apply power by closing the systemdisconnect switch. This energizes thecompressor heater which evaporatesthe liquid refrigerant in the crankcase.

3. Allow 4 hours or 60 minutes per poundof refrigerant in the system as notedon the unit rating plate, whichever isgreater.

4. After properly elapsed time, thethermostat may be set to operate thecompressor.

5. Except as required for safety whileservicing – Do not open systemdisconnect switch.

7961-061

FIGURE 9START-UP LABEL

Manual 2100-425Page 15

Low Pressure Switch, Bypass, and LockoutSequence

If the low pressure switch opens for more than 120seconds, the compressor contactor will de-energizeand go into a soft lockout. Regardless the state of thelow pressure switch, the contactor will reenergize afterthe delay on make time delay has expired. If the lowpressure switch remains open, or opens again forlonger than 120 seconds the unit will go into manuallockout condition and the alarm relay circuit willenergize. Recycling the wall thermostat resets themanual lockout.

Alarm Relay Output

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

NOTE: Both high and low pressure switch controlsare inherently automatic reset devices. Thehigh pressure switch and low pressureswitch cut out and cut in settings are fixed byspecific air conditioner or heat pump unitmodel. The lockout features, both soft andmanual, are a function of the CompressorControl Module.

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 softlockout until the high pressure switch closes and thedelay on break time has expired. If the high pressureswitch opens again in this same operating cycle theunit will go into manual lockout condition and thealarm relay circuit will energize. Recycling the wallthermostat resets the manual lockout.SEQUENCE OF OPERATION

COOLING – 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 all 208/230volt models, when G circuit is de-energized the indoorblower motor will continue to run for one minute. Ona call for heating, circuit R-W1 make at the thermostatpulling in heat contact for the strip heat and bloweroperation. On a call for second stage heat, R-W2makes bringing on second heat contactor, if soequipped.

COMPRESSOR CONTROL MODULE

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

Adjustable Delay On Make And Break Timer

On initial power up or any time power is interrupted tothe unit the delay on make period begins which willbe 2 minutes plus 10% of the delay on break setting.When the delay on make is complete and the highpressure switch (and low pressure switch if employed)is closed, the compressor contactor is energized.Upon shutdown the delay or break timer starts andprevents restart until the delay on break and delay onmake periods have expired.

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.

SERVICE HINTS

1. Caution homeowner to maintain clean air filters atall times. Also, not to needlessly close off supplyand return air registers. This reduces air flowthrough the system, which shortens equipmentservice life as well as increasing operating costs.

Manual 2100-425Page 16

PHASE MONITOR

All 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 unitfactory wires as damage may occur.

PRESSURE SERVICE PORTS

High and low pressure service ports are installed on allunits so that the system operating pressures can beobserved. Pressure tables can be found later in themanual covering all models. It is imperative to matchthe correct pressure table to the unit by model number.

ADJUSTMENTS

Adjustable Delay on Make and Delay on BreakTimer

The potentiometer is used to select Delay on Breaktime from 30 seconds to 5 minutes. Delay on Make(DOM) timing on power-up and after powerinterruptions is equal to 2 minutes plus 10% of Delayon 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

Manual 2100-425Page 17

TROUBLESHOOTING

FIGURE 10FAN BLADE SETTING

6. Service motor/fan as needed.

7. Reverse steps to reinstall.

REFRIGERANT CHARGEThe correct system R-22 charge is shown on the unitrating plate. Optimum unit performance will occurwith a refrigerant charge resulting in a suction linetemperature (6 inches from compressor) as shown inTable 8:

The suction line temperatures in Table 8 are basedupon 80ºF dry bulb / 67ºF wet bulb (50 percent R.H.)temperature and rated airflow across the evaporatorduring cooling cycle.

FAN BLADE SETTING DIMENSIONSShown in the drawing below are the correct fan bladesetting dimensions for proper air delivery across theoutdoor coil.

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.

REMOVAL OF FAN SHROUD1. Disconnect all power to unit.2. Remove the screws holding both grills – one on

each side of unit – and remove grills.

3. Remove screws holding fan shroud to condenserand bottom – (9) screws.

4. Unwire condenser fan motor.

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

TABLE 7FAN BLADE DIMENSIONS

ledoM AnoisnemiD

116AW07AW 52.1

127AW 57.

TABLE 8SUCTION LINE TEMPERATURES

sledoM detaRwolfriA

F°59.pmeTDO

F°28.pmeTDO

116AW 053,1 45-25 06-75

07AW 008,1 06-85 85-65

127AW 008,1 16-95 95-75

� Rated CFM and ESP on high speed tap.

TABLE 9CFM and ESP

detaRledoM

1detaRMFC

1detaRPSE

dednemmoceRwolFriAegnaR

116AW 053,1 02. 001,1--574,1

07AW 008,1 02. 573,1--000,2

127AW 008,1 02. 574,1--000,2

TABLE 10INDOOR BLOWER PERFORMANCE – CFM AT 230 VOLTS

� This model has 3-speed motor, but low speed cannot be used.

.P.S.EHnI 2O

116AW 07AW127AW

deepShgiH deepSmuideM 1 deepShgiH deepSwoL

lioCyrD lioCteW lioCyrD lioCteW lioCyrD lioCteW lioCyrD lioCteW

0. 007,1 575,1 524,1 573,1 002,2 000,2 006,1 054,1

1. 055,1 574,1 573,1 052,1 001,2 009,1 525,1 573,1

2. 004,1 053,1 052,1 001,1 000,2 008,1 --- ---

3. 052,1 051,1 001,1 --- 578,1 007,1 --- ---

4. --- --- --- --- 577,1 006,1 --- ---

5. --- --- --- --- 056,1 574,1 --- ---

Manual 2100-425Page 18

Low side pressure ± 2 psigHigh side pressure ± 5 psig

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

TABLE 12COOLING PRESSURE – (All temperatures °F)

ledoM

nruteRriA.pmeT erusserP 57 08 58 09 59 001 501 011 511

C-,B-.A-116AW

BD57BW26

ediSwoLediShgiH

27732

27732

37042

47742

57652

67962

77682

97403

97723

BD08BW76

ediSwoLediShgiH

77342

77342

87642

97352

08362

18672

28392

48213

58533

BD58BW27

ediSwoLediShgiH

08252

08252

18552

28262

38272

48682

58303

78323

88743

A-207AW

BD57BW26

ediSwoLediShgiH

86512

86822

96242

07652

17272

27982

37503

47423

57343

BD08BW76

ediSwoLediShgiH

37022

37432

47842

57362

67972

77692

87313

97233

08253

BD58BW27

ediSwoLediShgiH

67822

67242

77752

87272

97982

08603

18423

28443

38463

C-,B-107AW

BD57BW26

ediSwoLediShgiH

26412

36032

46742

56562

66082

76992

86613

96333

07153

BD08BW76

ediSwoLediShgiH

76022

86632

96452

07172

17782

27603

37423

47243

57063

BD58BW27

ediSwoLediShgiH

27522

37342

47162

57972

67792

77613

87533

97353

08273

127AW

BD57BW26

ediSwoLediShgiH

36502

46222

56732

66452

76862

86682

96203

07813

17633

BD08BW76

ediSwoLediShgiH

86112

96722

07442

17162

27572

37492

47013

57723

67543

BD58BW27

ediSwoLediShgiH

37612

47432

57152

67862

77582

87303

97123

08933

18753

TABLE 11MAXIMUM ESP OF OPERATION

ELECTRIC HEAT ONLY

ledoM 116AW 07AW 127AW

deepSWK

muideMdeepS

hgiHdeepS

woLdeepS

hgiHdeepS

woLdeepS

hgiHdeepS

50A-80A-01A-02A-

03.03.03.03.

03.03.03.03.

05.---05.04.

05.---05.05.

------------

------------

90B-51B-81B-

03.------

03.------

05.05.05.

05.05.05.

05.05.05.

05.05.05.

90C-51C-

03.---

03.---

05.05.

05.05.

------

------

Manual 2100-425Page 19

TABLE 13OPTIONAL ACCESSORIES

WA

611-

A

WA

611-

B

WA

611-

C

WA

702-

A

WA

701-

B

WA

701-

C, W

A72

1-C

WA

721-

B

LEDOM NOITPIRCSED

50A-50AWHE egakcaPretaeH X

01A-01AWHE egakcaPretaeH X

51A-51AWHE egakcaPretaeH X

02A-02AWHE egakcaPretaeH X

90B-06AWHE egakcaPretaeH X X

51B-50AWHE egakcaPretaeH X X

81B-50AWHE egakcaPretaeH X X

90C-A50AWHE egakcaPretaeH X X

51C-A50AWHE egakcaPretaeH X

50A-16AWHE egakcaPretaeH X

01A-16AWHE egakcaPretaeH X

80A-16AWHE egakcaPretaeH X

90B-16AWHE egakcaPretaeH X

5-POB etalPffOknalB X X X X X X X

5-DAFB repmaDriAhserFcirtemoraB X X X X X X X

5-DAFM repmaDriAhserFdezirotoM X X X X X X X

5-VRC tsuahxEhtiwrotalitneVmoorssalC X X X X X X X

5-MFIE tsuahxEhtiwrezimonocE X X X X X X

A5A-VREW rotalitneVyrevoceRygrenE X X X

A5C-VREW rotalitneVyrevoceRygrenE X X

C10-DPMW tiKtcennocsiDlluP X X