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INSTALLATION INSTRUCTIONS
WALL MOUNTED
PACKAGE AIR CONDITIONERS
Model:
W12A2-A
W12A1-K
Bard Manufacturing Company, Inc.
Manual: 2100-509E
Bryan, Ohio 43506
Supersedes: 2100-509D
File: Volume III Tab 16
Since 1914....Moving ahead just as planned.
Date: 08-20-12
Manual 2100-509E
Page 1 of 17
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CONTENTS Getting Other Informations and Publications 3 Start Up Requirements: R-410A .............................................13 Wall Mount General Information Important Installer Note ............................................14 Air Conditioner Wall Mount Model Nomenclature ......4 Service Hints ............................................................14 Shipping Damage ......................................................6 High & Low Pressure Switch ..................................
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GETTING OTHER INFORMATION and PUBLICATIONS These publications can help you install the air For more information, contact these conditioner or heat pump. You can usually find these publishers: at your local library or purchase them directly from the publisher. Be sure to consult current edition of each ACCA Air Conditioning Contractors of America standard. 1712 New Hampshire Avenue NW Washington, DC 20009 National Electrical Code .......................ANSI/NFPA 70 Telephone: (202) 4
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WALL MOUNT GENERAL INFORMATION AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE W 12 A 2 – A 00 X X X X X J MODEL NUMBER REVISIONS CONTROL CAPACITY MODULES 12 - 1 Ton E - Low Ambient Control J - Telecommunication AIR VOLTS & PHASE KW CONDITIONER A - 230/208/60/1 00 - No KW COIL OPTIONS K - 115/60/1 02 - 2.2 KW X - Standard Coils 03 - 3.6 KW COLOR OPTIONS 05 - 5.0 KW X - Beige 4 - Buckeye Gray OUTLET OPTIONS X - Front VENTILATION OPTIONS FILTER OPTIONS X - Barometric Fres
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FIGURE 1 UNIT DIMENSIONS 32.00 30.13 17.00 17.00 2.25 Supply Air Supply Air 5.00 5.00 Opening Opening 2.00* 5.00* Return Air 10.00 Opening Return Air 10.00 Opening Top Rain Flashing Shipping Location Optional Electrical 26.75 Entrance 23.75 20.25 Side Wall Mounting Flanges (Built In) Back View Back View 2.50 Return air opening is in upper Return air opening is in lower field convertible position factory standard position Built-in Rain 31.06 14.63 Hood 4° Pitch Electric Heat Heater and Filter Ac
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TABLE 2 ELECTRICAL HEAT SPECIFICATIONS SINGLE CIRCUIT j Rated Volts No. Field Maximum Minimum Models and Power External Fuse Field Power Ground Circuit Phase Circuits or Circuit Wire Size Wire Size Ampacity Breaker W12A2-A00 1 9 15 14 14 A03 230/208-1 1 20 20 12 12 A05 1 28 30 10 10 W12A1-K00 1 20 30 10 10 115-1 K02 1 29 30 10 10 j 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
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FRESH AIR INTAKE DUCT WORK All duct work, supply and return must be properly sized All units are built with fresh air inlet slots punched in the service panel. for the design air flow requirement of the equipment. Air Conditioning Contractors of America (ACCA) is If the unit is equipped with a fresh air damper assembly, an excellent guide to proper sizing. All duct work or the assembly is shipped already attached to the unit. The portions thereof not in the conditioned space should be
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INSTALLATION INSTRUCTIONS 4. Position unit in opening and secure with 5/16 lag WALL MOUNTING INFORMATION bolts; use 7/8 inch diameter flat washers on the lab 1. These units are secured by wall mounting brackets bolts. which secure the unit to the outside wall surface at both sides. 5. Secure rain flashing to wall and caulk across entire length of top. See Figure 3. 2. On wood frame walls, the wall construction must be strong and rigid enough to carry the weight of the 6. For additiona
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Manual 2100-509E Page 9 of 17 FIGURE 3 MOUNTING INSTRUCTIONS
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FIGURE 4 WALL MOUNTING INSTRUCTIONS SEE FIGURE 3 - MOUNTING INSTRUCTIONS FIGURE 5 WALL MOUNTING INSTRUCTIONS SEE UNIT DIMENSIONS, FIGURE 1, FOR ACTUAL DIMENSIONS Manual 2100-509E Page 10 of 17
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FIGURE 6 COMMON WALL-MOUNTING INSTALLATIONS Manual 2100-509E Page 11 of 17
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WIRING – LOW VOLTAGE WIRING WIRING – MAIN POWER 230/208, 1 phase equipment use dual primary voltage Refer to the unit rating plate for wire sizing information transformers. All equipment leaves the factory wired on and maximum fuse or “HACR” type circuit breaker size. 240V tap. For 208V operation, reconnect from 240V to Each outdoor unit is marked with a “Minimum Circuit 208V tap. The acceptable operating voltage range for the Ampacity”. This means that the field wiring used must 24
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START UP REMEMBER: When adding R-410A refrigerant, it must THESE UNITS REQUIRE R-410A come out of the charging cylinder/tank as a liquid to REFRIGERANT AND POLYOL avoid any fractionation, and to insure optimal system performance. Refer to instructions for the cylinder that ESTER OIL. is being utilized for proper method of liquid extraction. GENERAL: 1. Use separate service equipment to avoid cross contamination of oil and refrigerants. WARNING 2. Use recovery equipment rated
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START UP During routine operation of the unit with no power IMPORTANT INSTALLER NOTE interruptions the compressor will operate on demand For improved start up performance, wash the indoor coil with no delay. with a dishwasher detergent. High Pressure Switch and Lockout Sequence SERVICE HINTS If the high pressure switch opens, the compressor 1. Caution owner to maintain clean air filters at all contactor will de-energize immediately. The lockout times. Also not to needlessly close off su
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ADJUSTMENTS PRESSURE SERVICE PORTS Adjustable Delay on Make and Delay on Break High and low pressure service ports are installed on Timer all units so that the system operating pressures can be observed. Pressure chart can be found later in the manual The potentiometer is used to select Delay on Break time covering all models. It is imperative to match the correct from 30 seconds to 5 minutes. Delay of Make (DOM) pressure chart to the unit by model number. timing on power up and after p
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TROUBLESHOOTING TABLE 4 FAN BLADE SETTING DIMENSIONS INDOOR BLOWER Shown in Figure 7 is the correct fan blade setting PERFORMANCE dimension for proper air delivery across the outdoor coil. CFM @ 230V / 115V Any service work requiring removal or adjustment in W12Aà the fan and/or motor area will require that the dimension E.S.P. 230V / 115V below be checked and blade adjusted in or out on the in motor shaft accordingly. Dry / Wet Dry / Wet H O 2 High Low FIGURE 7 .0 530 / 500 465 / 425
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TABLE 7 PRESSURE TABLE COOLING Air Temperature Entering Outdoor Coil °F Return Air Model Pressure 75° 80° 85° 90° 95° 100° 105° 100° 115° Temperature 75 deg. DB Low Side 120 124 129 133 136 138 141 142 143 62 deg. WB High Side 291 310 332 355 379 405 432 460 490 80 deg. DB Low Side 128 133 138 142 143 148 151 152 153 W12Aà 67 deg. WB High Side 298 318 340 364 387 415 443 472 503 85 deg. DB Low Side 132 138 143 147 150 153 156 157 158 72 deg. WB High Side 308 329 352 377 403 430 459 489 521 Low
