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INSTALLATION INSTRUCTIONS
WALL MOUNTED
PACKAGE AIR CONDITIONERS
Model:
WA121
Bard Manufacturing Company, Inc. Manual : 2100-234I
Bryan, Ohio 43506 Supersedes: 2100-234H
File: Volume III Tab 16
Since 1914....Moving ahead just as planned.
Date: 08-01-07
© Copyright 2002 Manual 2100-234I
Page 1 of 17
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CONTENTS Getting Other Informations and Publications 3 Start Up Important Installer Note .......................................... 14 Wall Mount General Information Service Hints .......................................................... 14 Air Conditioner Wall Mount Model Nomenclature ..... 4 High Pressure Switch ............................................. 14 Shipping Damage ..................................................... 6 Sequence of Operation.........................................
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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 at 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 F
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WALL MOUNT GENERAL INFORMATION AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE WA 12 1 – A 00 X X X X X J MODEL NUMBER CONTROL MODULES E - Low Ambient Control J - Telecommunication CAPACITY 12 - 1 Ton REVISIONS COIL OPTIONS COLOR OPTIONS X - Standard Coils X - Beige KW 4 - Buckeye Gray VOLTS & PHASE 00 - No KW VENTILATION OPTIONS A - 230/208/60/1 OUTLET OPTIONS 02 - 2.2 KW X - Barometric Fresh Air K - 115/60/1 X - Front 03 - 3.6 KW Damper (Standard) 05 - 5.0 KW B -
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Manual 2100-234I Page 5 of 17 FIGURE 1 UNIT DIMENSIONS FACTORY BUILT AT 5 INCHES
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TABLE 2 ELECTRICAL HEAT SPECIFICATIONS SINGLE CIRCUIT 3 1 2 2 Maximum Rated Volts No.Field Minimum ExternalFuse and Power Circuit orCircuit Field Power Ground Models Phase Circuits Ampacity Breaker Wire Size Wire Size WA121-A00 1 8 15 14 14 A03 230/208-1 1 20 20 12 12 A05 1 27 30 10 10 WA121-K00 1 17 25 10 10 115-1 K02 1 25 30 10 10 WA121-G00 1 7 15 14 14 G02 220-50-1 1 13 15 14 14 G03 1 20 20 12 12 Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring
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DUCT WORK FRESH AIR INTAKE 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 an If the unit is equipped with a fresh air damper assembly, 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 damper
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INSTALLATION INSTRUCTIONS WALL MOUNTING INFORMATION 2. Locate and mark lag bolt locations, if desired. See Figure 3. 1. These units are secured by wall mounting brackets which secure the unit to the outside wall surface at 3. Hook top rain flashing under back bend of top. Top both sides. rain flashing is shipped attached to the back of the unit on the right side. 2. On wood frame walls, the wall construction must be strong and rigid enough to carry the weight of the 4. Position unit in opening
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Manual 2100-234I 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 2100-234I Page 10 of 17
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FIGURE 6 COMMON WALL-MOUNTING INSTALLATIONS Manual 2100-234I Page 11 of 17
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WIRING – LOW VOLTAGE WIRING WIRING – MAIN POWER Refer to the unit rating plate for wire sizing information 230/208, 1 phase equipment use dual primary voltage and maximum fuse or “HACR” type circuit breaker size. transformers. All equipment leaves the factory wired on Each outdoor unit is marked with a “Minimum Circuit 240V tap. For 208V operation, reconnect from 240V to Ampacity”. This means that the field wiring used must 208V tap. The acceptable operating voltage range for the be sized to
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FIGURE 7 LOW VOLTAGE WIRING Manual 2100-234I Page 13 of 17
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START UP IMPORTANT INSTALLER NOTE the delay on make is complete and the high pressure switch (and low pressure switch if employed) is closed, For improved start up performance, wash the indoor coil the compressor contactor is energized. Upon shutdown with a dishwasher detergent. the delay on break time starts and prevents restart until the delay on break and delay on make periods have SERVICE HINTS expired. 1. Caution owner to maintain clean air filters at all During routine operation of the un
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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 all Timer 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 power i
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TROUBLESHOOTING TABLE 7 FAN BLADE SETTING DIMENSIONS INDOOR BLOWER Show in Figure 8 is the correct fan blade setting PERFORMANCE dimension for proper air delivery across the outdoor coil. CFM @ 230V Any service work requiring removal or adjustment in the fan and/or motor area will require that the dimension WA121 below be checked and blade adjusted in or out on the 230V motor shaft accordingly. E.S.P. in H ODt ry / We 2 FIGURE 8 .0 530 / 500 FAN BLADE SETTING DIMENSION .1 485 / 460 .2 440 / 425
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TABLE 10 PRESSURE TABLE COOLING o Air Temperature Entering Outdoor Coil F Return Air o o o o o o o o o ModelTe emperatureP5 ressur 7 80 85 90 95 100 105 100 115 75 deg. DB Low Side 72 74 76 79 81 83 86 88 91 62 deg. WB High Side 187 201 216 232 248 265 282 300 319 80 deg. DB Low Side 76 79 82 84 87 90 92 95 97 WA121 67 deg. WB High Side 192 207 222 238 255 272 290 309 328 85 deg. DB Low Side 81 85 88 91 94 97 99 102 104 72 deg. WB High Side 198 214 230 247 264 282 300 319 339 TABLE 11 OPTION
