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INSTALLATION INSTRUCTIONS
WALL MOUNTED
PACKAGE AIR CONDITIONERS
MODELS
W18A1 W18L1
W24A1 W24L1
W30A1 W30L1
W36A1 W36L1
W42A1 W42L1
W48A1 W48L1
W60A1 W60L1
Bard Manufacturing Company, Inc.
Manual : 2100-508
Bryan, Ohio 43506
Supersedes: NEW
File: Volume III Tab 16
Since 1914...Moving ahead just as planned.
Date: 07-07-08
Manual 2100-508
© Copyright 2008
Page 1 of 25
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Contents Start Up Getting Other Information and Publications 3 General .............................................................. 15 Topping Off System Charge................................... 15 Wall Mount General Information Safety Practices..................................................... 15 Wall Mount Model Nomenclature ............................ 4 Important Installer Note ......................................... 16 Shipping Damage ................................................
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GETTING OTHER INFORMATION AND PUBLICATIONS These publications can help you install the air FOR MORE INFORMATION, CONTACT conditioner or heat pump. You can usually find these at THESE PUBLISHERS: 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 Ave. N.W. Washington, DC 20009 Telephone: (202) 483-9370 National Electrical Code ...................... ANSI/NFPA 70 Fax
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WALL MOUNT GENERAL INFORMATION AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE W 42 A 1– A 10 X X X X X A CONTROL MODULES REVISIONS MODEL NUMBER (See Spec. Sheet S3397) KW CAPACITY 18 - 1½ Ton VOLTS & PHASE COIL OPTIONS 24 - 2 Ton A - 230/208/60/1 X - Standard COLOR OPTIONS 30 - 2½ Ton B - 230/208/60/3 1 - Phenolic Coated Evaporator X - Beige (Standard) 36 - 3 Ton C - 460/60/3 2 - Phenolic Coated Condenser 1 - White 42 - 3½ Ton 3 - Phenolic Coated Evaporator 2 - Mesa Tan 48 - 4 Ton and Condenser 4
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DUCT WORK FILTERS All duct work, supply and return, must be properly sized A 1-inch throwaway filter is standard with each unit. for the design airflow requirement of the equipment. Air The filter slides into position making it easy to service. Conditioning Contractors of America (ACCA) is an This filter can be serviced from the outside by removing excellent guide to proper sizing. All duct work or portions the filter access panel. A 1-inch washable filter and 2- thereof not in the conditione
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INSTALLATION INSTRUCTIONS WALL MOUNTING INFORMATION 1. Two holes for the supply and return air openings must be cut through the wall as shown in Figure 3. WARNING 2. On wood frame walls, the wall construction must be strong and rigid enough to carry the weight of the Failure to provide the 1/4 inch clearance unit without transmitting any unit vibration. between the supply duct and a combustible 3. Concrete block walls must be thoroughly inspected surface for the first 3 feet of duct can
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FIGURE 2 Dimensions of Basic Unit for Architectural and Installation Requirements (Nominal) WIDTH DEPTH HEIGHTSN UPPLY RETUR MODEL (W) (D) (H) AB C B E F G I J K L M N O P Q R S T W18A, L 35 3.30013 7.1278 0.5678 .818 9.818 1.810 9.830 5.015 1.026 5.725 0.526 6.725 8.020 9.223 7.023 .636 4.125 2.019 0.540 .110 2.0 5.0 W24A, L W30A, L 35 8.20013 7.1278 0.5678 .828 7.818 3.820 7.840 0.015 1.023 5.715 7.925 6.725 8.720 9.225 7.029 .735 9.124 2.799 .140 .110 2.0 5.0 W36A, L W42A, L W48A, L42 2.0752
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Manual 2100-508 Page 8 of 25 FIGURE 3A W18A1, W18L1, W24A1, W24L1 MOUNTING INSTRUCTIONS
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Manual 2100-508 Page 9 of 25 FIGURE 3B W30A1, W30L1, W36A1, W36L1 MOUNTING INSTRUCTIONS
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Manual 2100-508 Page 10 of 25 FIGURE 3C W42A1, W42L1, W48A1, W48L1, W60A1, W60L1 MOUNTING INSTRUCTIONS
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FIGURE 4 ELECTRIC HEAT CLEARANCE W30A1, W30L1, W36A1, W36L1, W42A1, W42L1, W48A1, W48L1, W60A1, W60L1 SIDE SECTION VIEW OF SUPPLY AIR DUCT FOR WALL MOUNTED UNIT SHOWING 1/4 INCH CLEARANCE TO COMBUSTIBLE SURFACES. WARNING A minimum of 1/4 inch clearance must be maintained between the supply air duct and combustible materials. This is required for the first 3 feet of ducting. It is important to insure that the 1/4 inch minimum spacing is maintained at all points. Failure to do this coul
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FIGURE 5 WALL MOUNTING INSTRUCTIONS SEE FIGURE 3 – MOUNTING INSTRUCTIONS FIGURE 6 WALL MOUNTING INSTRUCTIONS SEE UNIT DIMENSIONS, FIGURE 2, FOR ACTUAL DIMENSIONS IF REQUIRED IF REQUIRED Manual 2100-508 Page 12 of 25
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FIGURE 7 COMMON WALL MOUNTING INSTALLATIONS Manual 2100-508 Page 13 of 25
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WIRING – MAIN POWER WIRING – LOW VOLTAGE WIRING 230/208V, 1 phase and 3 phase equipment dual primary Refer to the unit rating plate for wire sizing information and maximum fuse or “HACR” type circuit breaker voltage transformers. All equipment leaves the factory wired on 240V tap. For 208V operation, reconnect from size. Each outdoor unit is marked with a “Minimum Circuit Ampacity”. This means that the field wiring 240V to 208V tap. The acceptable operating voltage range for the 240 and
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START UP REMEMBER: When adding R-410A refrigerant, it THESE UNITS REQUIRE R-410A must come out of the charging cylinder/tank as a liquid REFRIGERANT AND POLYOL to 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. 2. Use recovery equipment rated for R-410A WARNING
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START UP (Continued) IMPORTANT INSTALLER NOTE PHASE MONITOR For improved start up performance wash the indoor coil All units with three phase scroll compressors are with a dish washing detergent. equipped with a 3 phase line monitor to prevent compressor damage due to phase reversal. HIGH PRESSURE SWITCH The phase monitor in this unit is equipped with two LEDs. If the Y signal is present at the phase monitor All W**A/W**L wall mounted air conditioner series models are supplied with a remote res
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Alarm Relay Output SEQUENCE OF OPERATION COOLING – Circuit R-Y makes at thermostat pulling Alarm terminal is output connection for applications in compressor contactor, starting the compressor and where alarm relay is employed. This terminal is outdoor motor. The G (indoor motor) circuit is powered whenever the compressor is locked out due to automatically completed on any call for cooling HPC or LPC sequences as described. operation or can be energized by manual fan switch on NOTE: Both hig
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TROUBLESHOOTING FAN BLADE SETTING DIMENSIONS REFRIGERANT CHARGE Shown in Figure 8 is the correct fan blade setting for The correct system R-410A charge is shown on the unit proper air delivery across the outdoor coil. Refer to rating plate. Optimum unit performance will occur with Table 1 for unit specific dimension. a refrigerant charge resulting in a suction line Any service work requiring removal or adjustment in temperature (6" from compressor) as shown in Table 2. the fan and/or motor are
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TABLE 3 COOLING PRESSURE TABLE Air Temperature Entering Outdoor Coil °F Return Air ModelTe emperatureP5 ressur 708580959015 0 10 0 15 1 10 1 12 75 deg. DB Low Side 127 129 131 133 135 137 138 140 141 143 62 deg. WB High Side 295 316 337 360 383 407 432 457 484 511 80 deg. DB Low Side 136 138 140 142 144 146 148 150 151 153 W18A1/L1 67 deg. WB High Side 303 324 346 369 393 417 443 469 496 524 85 deg. DB Low Side 141 143 145 147 149 151 153 155 156 158 72 deg. WB High Side 314 335 358 382 407 432
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TABLE 4 Electrical Specifications — W**A Series Single Circuit Dual Circuit 3 Minimum 1 Maximum 2 Field 2 Ground Rated No. Field 3 Minimum 1 Maximum 2 Field Circuit External Fuse Power 2 Ground Wire Size Model Volts Power Circuit External Fuse Power Ampacity or Ckt. Brkr. Wire Size Wire and Phase Circuits Ampacity or Ckt. Brkr. Wire Size CB kt. ACA kt.CB kt.CA kt.CB kt.CA kt.CB kt. Ckt. W18A1 - A00, A0Z 1 16 20 12 12 A05 1 30 30 10 10 230/208-1 A08 1 46 50 8 10 A10 1 56 60 6 10 W24A1 - A00, A
