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WALL MOUNTED PACKAGED
AIR CONDITIONER
INSTALLATION
Models: WA302
INSTRUCTIONS
WA372
MIS-656
Manual No.: 2100-404
Bard Manufacturing Company
Supersedes:
Bryan, Ohio 43506
File: Volume III, Tab 16
Since 1914...moving ahead just as planned.
Date: 04-01-02
© Copyright 2002
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Contents Start Up Getting Other Information and Publications For more information, Important Installer Note ......................................... 13 High Pressure Switch ............................................ 12 contact these publishers .......................................... 1 Three Phase Scroll Compressor Start Up Wall Mount General Information Information............................................................. 13 Air Conditioner Wall Mount Model Nomenclature .... 2 Phase Mon
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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 Avenue NW 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 MODEL CONTROL MODULES WA 37 2 – A 10 X XXXXA NUMBER (See Spec. Sheet S3208) CAPACITY COIL OPTIONS 25 - 2 Ton X - Standard REVISIONS 1 - Phenolic Coated Evaporator 37 - 3 Ton COLOR OPTIONS 2 - Phenolic Coated Condenser X - Beige (Standard) KW 3 - Phenolic Coated Evaporator 1 - White and Condenser 2 - Mesa Brown VENTILATION OPTIONS VOLTS & PHASE 4 - Buckeye Gray X - Barometric Fresh Air Damper A - 230/208/60/1 5 - Des
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Manual 2100-404 Page 3 TABLE 2 DIMENSIONS OF BASIC UNIT (NOMINAL) Sn upply Retur Width Depth Height Model (W) (D) (H) A BCB EF G I J K L M N O P Q R S T WA302 35 8.2013 7.1278 0.5678 .828 7.818 3.820 7.840 0.015 8.523 5.715 7.925 6.725 8.720 9.225 7.029 .735 9.124 2.799 .140 .110 2.0 5.0 WA371 FIGURE 1 UNIT DIMENSIONS FRONT VIEW SIDE VIEW BACK VIEW
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TABLE 3 ELECTRIC HEAT TABLE WA302-A WA302-B Models WA302-C WA372-A WA372-B WA372-C 21 40V-123 08V- 23 40V-23 08V- 460V- KS WAH MPBS TUAH MPBS TUAH MPBS TUAH MPBS TU AH MP BTU 58 .025 0.11 7,0610 8.1- 2,80 -- - -- - -- - -- - -- - -- 16 0.040 1.32 4,1330 6.2- 5,60 -- - -- - -- - -- - -- - -- 15 5.060 2.51 1,2050 4.3- 8,40 -- - -- - -- - -- - -- - -- 6- .0 -- - -- - -- - -4 - 10 4.25 0,5010 2.12 5,36 75 . 20,47 9- .0 -- - -- - -- - -7 - 20 1.37 0,6010 8.28 3,03 10 0. 30,70 1- 5.0 -- - -- - -- - -
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FRESH AIR INTAKE DUCT WORK All units are built with fresh air inlet slots punched in All duct work, supply and return, must be properly sized the service panel. for the design air flow requirement of the equipment. Air Conditioning Contractors of America (ACCA) is an If the unit is equipped with the fresh air damper excellent guide to proper sizing. All duct work or assembly, the assembly is shipped already attached to portions thereof not in the conditioned space should be the unit. The damper
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INSTALLATION INSTRUCTIONS 6. Position unit in opening and secure with 5/16 lag WALL MOUNTING INFORMATION bolts; use 7/8 inch diameter flat washers on the lag 1. Two holes, for the supply and return air openings, bolts. must be cut through the wall as shown in Figure 3. 7. Secure rain flashing to wall and caulk across entire 2. On wood-frame walls, the wall construction must be length of top. See Figure 3. strong and rigid enough to carry the weight of the unit without transmitting any unit vibra
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The electrical data lists fuse and wire sizes (75ºC WIRING — LOW VOLTAGE WIRING copper) for all models, including the most commonly 230/208V, 1 phase and 3 phase equipment dual primary used heater sizes. Also shown are the number of field voltage transformers. All equipment leaves the factory power circuits required for the various models with wired on 240V tap. For 208V operation, reconnect from heaters. 240V to 208V tap. The acceptable operating voltage The unit rating plate lists a “Maximum T
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FIGURE 3 MOUNTING INSTRUCTIONS 4 9/16 MIS-311 NOTE: It is recommended that a bead of silicone caulking be placed behind the side mounting flanges and under the top flashing at the time of installation. Manual 2100-404 Page 8
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FIGURE 4 WALL-MOUNTING INSTRUCTIONS SEE FIGURE 3 – MOUNTING INSTRUCTIONS MIS-548 FIGURE 5 WALL-MOUNTING INSTRUCTIONS SEE UNIT DIMENSIONS, FIGURE 1, FOR ACTUAL DIMENSIONS SEE FIGURE 1 FOR DUCT DIMENSIONS MIS-31 MIS-31 MIS-311 1 1 MIS-549 Manual 2100-404 Page 9
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FIGURE 6 COMMON WALL-MOUNTING INSTALLATIONS MIS-550 Manual 2100-404 Page 10
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FIGURE 7 ELECTRIC HEAT CLEARANCE Side section view of supply air duct for wall mounted unit showing 1/4 inch clearance to combustible surfaces. MIS-277 WARNING 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 could result in overheating the combustible materia
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FIGURE 8 LOW VOLTAGE WIRING MIS-1373C Manual 2100-404 Page 12
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START UP IMPORTANT INSTALLER NOTE The direction of rotation of the compressor may be changed by reversing any two line connections to the For improved start-up performance, wash the indoor unit. coil with a dishwasher detergent. PHASE MONITOR HIGH PRESSURE SWITCH All units with three phase compressors are equipped The WA372 models are supplied with a remote reset with a 3 phase line monitor to prevent compressor high pressure switch. If tripped, this pressure switch damage due to phase reversal
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COMPRESSOR CONTROL MODULE Alarm Relay Output The compressor control module is optional on the Alarm terminal is output connection for applications models covered by this manual. The compressor where alarm relay is employed. This terminal is control is an anti-short cycle/lockout timer with high powered whenever compressor is locked out due to and low pressure switch monitoring and alarm relay HPC or LPC sequences as described. output. NOTE: Both high and low pressure switch controls are inhere
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TROUBLESHOOTING The suction line temperatures in Table 8 are based upon FAN BLADE SETTING DIMENSIONS 80ºF dry bulb/67ºF wet bulb (50 percent R.H.) Shown in the drawing below are the correct fan blade temperature and rated airflow across the evaporator setting dimensions for proper air delivery across the during cooling cycle. outdoor coil. TABLE 9 Any service work requiring removal or adjustment in INDOOR BLOWER PERFORMANCE the fan and/or motor area will require that the CFM AT 230 VOLTS dimens
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TABLE 12 j COOLING PRESSURE Outdoor Temperature °F Return Air ModelTe emperatureP5 ressur 708580959015 010 015 1 11 75 deg DB LowSide 75 76 78 79 80 81 83 84 85 62 deg WB HighSide 215 229 244 258 275 292 308 327 345 80 deg DB LowSide 80 81 83 85 86 87 89 90 91 WA302 67 deg WB HighSide 220 235 250 265 282 299 316 335 354 85 deg DB LowSide 83 84 86 88 89 90 92 93 94 72 deg WB HighSide 228 243 259 274 292 309 327 347 366 75 deg DB LowSide 69 70 72 74 75 77 78 79 79 62 deg WB HighSide 200 214 229 24
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TABLE 13 OPTIONAL ACCESSORIES MN ODEL DESCRIPTIO Be OP-3 Blank OffPlat XXXX Br FAD-3 Barometric FreshAir Dampe XXXX Mr FAD-3 Motorized FreshAir Dampe XXXX Ct RV-3 CommercialVentilator withExhaus XXXX Et IFM-3B Economizer withExhaus XXX Wr ERV-A3B EnergyRecoveryVentilato XXX Wr ERV-A3B EnergyRecoveryVentilato X Cl MA-6 LowAmbientContro XXX Cl MA-16A LowPressure Contro XXXX CC MA-18A LAC + LP XXX Ct MC-15SX tartKi Ee HWA03-A05 Heater Packag 1 X Ee HWA03-A08 Heater Packag 1 X Ee HWA03-A10 Heater P
