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INSTALLATION INSTRUCTIONS
WALL MOUNTED
PACKAGE AIR CONDITIONERS
MODELS
WA421
WA482
WA602
Manual : 2100-218I
Bard Manufacturing Company
Supersedes: 2100-218H
Bryan, Ohio 43506
File: Volume III Tab 16
Date: 04-19-99
Since 1914...Moving ahead, just
as planned.
© Copyright 1999
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Contents Start Up ................................................................... 14 Getting Other Information and Publications .......... 1 Important Installer Note .......................................... 14 Crankcase Heaters ................................................ 14 Wall Mount General Information ............................. 2 High Pressure Switch ............................................. 14 Heat Pump Wall Mount Model Nomenclature .......... 2 Three Phase Scroll Compresso
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Getting Other Information and Publications These publications can help you install the air conditioner For more information, contact these or heat pump. You can usually find these at your local publishers: library or purchase them directly from the publisher. Be sure to consult current edition of each standard. ACCA Air Conditioning Contractors of America 1712 New Hampshire Ave. N.W. Washington, DC 20009 National Electrical Code ......................... ANSI/NFPA 70 Telephone: (202) 483-9370 Fa
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WALL MOUNT GENERAL INFORMATION HEAT PUMP WALL MOUNT MODEL NOMENCLATURE MODEL NUMBER CONTROL MODULES WA 42 1 – A 10 X N X X X A (See Chart Below) CAPACITY COIL OPTIONS 42 - 3 1/2 Ton X - Standard 48 - 4 Ton REVISIONS 1 - Phenolic Coated Evaporator 60 - 5 Ton COLOR OPTIONS 2 - Phenolic Coated Condenser X - Beige (Standard) 3 - Phenolic Coated Evaporator 1 - White and Condenser KW 2 - Mesa Tan VOLTS & PHASE 4 - Buckeye Gray OUTLET OPTIONS VENTILATION OPTIONS A - 2
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Manual 2100-218 Page 3 FIGURE 1 UNIT DIMENSIONS Sn upply Retur Width Depth Height Model (W) (D) (H) A BCB EF GI J K L M N O P Q R S T WA42 42 2.07525 2.4388 4.8798 .828 9.818 5.828 9.840 3.816 9.130 1.638 0.034 2.629 6.933 4.637 2.438 .348 2.820 3.814 0.010 .418 6.0 1.8 WA48 FRONT VIEW SIDE VIEW BACK VIEW MIS-1262 * Optional top outlet (factory installed only) for WA30 and WA36 models only.
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TABLE 2 ELECTRICAL SPECIFICATIONS SINGLE CIRCUIT DUAL CIRCUIT ➀ ➀ ➂ Maximum ➁ Maximum ➁ ➁ Minimum External Fuse ➂ ➁ External Field Circuit Field Power Ground Rated Field Minimum Fuse or Power Ground Ampacity Wire Size Wire Size Volts & Power Circuit Circuit Wire Wire Model Phase Circuits Ampacity Breaker Size SizeCB KT ACA KTCB KTCA KTCB KTCA KTCB KT CKT WA421-A00, A0Z 1 33 50 8 10 N/A N/A N/A N/A N/A N/A N/A N/A A05 1 33 50 8 10 N/A N/A N/A N/A N/A N/A N/A N/A A10 230/208-1 1 59 60 6 10 N/A N/
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SHIPPING DAMAGE DUCT WORK Upon receipt of equipment, the carton should be checked All duct work, supply and return, must be properly sized for external signs of shipping damage. If damage is for the design air flow requirement of the equipment. Air found, the receiving party must contact the last carrier Conditioning Contractors of America (ACCA) is an immediately, preferably in writing, requesting inspection excellent guide to proper sizing. All duct work or by the carrier’s agent. portions
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FILTERS the damper to operate, the maximum and minimum blade position stops must be installed. See Figure 2. A one inch throwaway filter is supplied with each unit. The filter slides into position making it easy to service. All capacity, efficiency and cost of operation information This filter can be serviced from the outside by removing as required for Department of Energy “Energyguide” Fact the service door. A one inch washable filter and two inch Sheets is based upon the fresh air blank-off
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INSTALLATION INSTRUCTIONS WALL MOUNTING INFORMATION 1. Two holes for the supply and return air openings must WARNING be cut through the wall as shown in Figure 3. 2. On wood frame walls, the wall construction must be Failure to provide the 1/4 inch clearance strong and rigid enough to carry the weight of the unit between the supply duct and a combustible without transmitting any unit vibration. surface for the first 3 feet of duct can result in fire causing damage, injury or death. 3. Co
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Manual 2100-218 Page 8 FIGURE 3 MOUNTING INSTRUCTIONS MIS-416
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FIGURE 4 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 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 material and may resu
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FIGURE 5 WALL MOUNTING INSTRUCTIONS SEE FIGURE 3 – MOUNTING INSTRUCTIONS WALL STRUCTURE FACTORY SUPPLIED RAIN FLASHING. MOUNT ON UNIT BEFORE INSTALLATION SUPPLY AIR SUPPLY AIR SUPPLY AIR OPENING OPENING OPENING RETURN AIR RETURN AIR RETURN AIR OPENING OPENING OPENING BOTTOM MOUNTING BRACKET. MOUNT ON WALL BEFORE INSTALLING UNIT. MIS-548 FIGURE 6 WALL MOUNTING INSTRUCTIONS SEE UNIT DIMENSIONS, FIGURE 1, FOR ACTUAL DIMENSIONS ATTACH TO TOP PLATE OF WALL 1.000” CLEARANCE ALL AROUN
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FIGURE 7 COMMON WALL MOUNTING INSTALLATIONS FREE AIR FLOW NO DUCT DUCTED SUPPLY RETURN AT UNIT CLOSET INSTALLATION FALSE WALL INSTALLATION MIS-550 Manual 2100-218 Page 11
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WIRING – MAIN POWER WIRING – LOW VOLTAGE WIRING Refer to the unit rating plate for wire sizing information 230 / 208V, 1 phase and 3 phase equipment dual primary and maximum fuse or “HACR” type circuit breaker size. voltage transformers. All equipment leaves the factory Each outdoor unit is marked with a “Minimum Circuit wired on 240V tap. For 208V operation, reconnect from Ampacity”. This means that the field wiring used must be 240V to 208V tap. The acceptable operating voltage sized to
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FIGURE 8 UNIT 24V TERMINAL BOARD MIS-1373 Manual 2100-218 Page 13
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START UP IMPORTANT INSTALLER NOTE FIGURE 9 STARTING PROCEDURE For improved start up performance wash the indoor coil with a dish washing detergent. IMPORTANT CRANKCASE HEATERS WA421 units are provided with compressor crankcase THESE PROCEDURES MUST BE FOLLOWED AT heat. WA602 and WA482 units are not provided with INITIAL START UP AND AT ANY TIME POWER crankcase heat. These units utilize scroll compressors HAS BEEN REMOVED FOR 12 HOURS OR which do not require crankcase heat in this application.
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High Pressure Switch and Lockout Sequence SERVICE HINTS 1. Caution homeowner to maintain clean air filters at all If the high pressure switch opens, the compressor times. Also, not to needlessly close off supply and contactor will de-energize immediately. The lockout return air registers. This reduces air flow through the timer will go into a soft lockout and stay in soft lockout system, which shortens equipment service life as well until the high pressure switch closes and the delay on as inc
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Typical Settings for Dual Unit Installation: If phases are reversed, the red fault LED will be lit and compressor operation is inhibited. Unit 1: DOB set at 2 minutes, and DOM is 132 seconds If a fault condition occurs, reverse two of the supply leads Unit 2: DOB set at 4 minutes, and DOM is 144 seconds to the unit. Do not reverse any of the unit factory wires as damage may occur. PHASE MONITOR All units with three phase scroll compressors are PRESSURE SERVICE PORTS equipped with a 3 phase li
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TROUBLESHOOTING FAN BLADE SETTING DIMENSIONS 4. Unwire condenser fan motor. Shown in Figure 10 is the correct fan blade setting 5. Slide complete motor, fan blade, and shroud assembly dimension for proper air delivery across the outdoor coil. out the left side of the unit. Any service work requiring removal or adjustment in the 6. Service motor/fan as needed. fan and/or motor area will require that the dimensions 7. Reverse steps to reinstall. below be checked and blade adjusted in or out on the
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TABLE 9 TABLE 8 MAXIMUM ESP OF OPERATION RECOMMENDED AIRFLOW ELECTRIC HEAT ONLY Rated Rated Recommended M1 odelW2 A42W2 A48 WA60 Model CFM * ESP * Airflow Range High Low High Low High Low W0 A42110 40.0 3 1600 - 115 KW Speed Speed Speed Speed Speed Speed W0 A48210 55.5 2 1750 - 128 -A05 .50 .50 .50 .50 .50 .50 W0 A60210 70.5 3 1950 - 137 -A10 .50 .50 .50 .50 .50 .50 -A15 .50 .50 .50 .50 .50 .50 * Rated CFM and ESP on high speed tap. -A20 .50 .45 .50 .45 .50 .40 -B00 .50 .50 .50 .50 .50 .50 -B
