Bard WA423 Installation Instructions Manual
Wall mounted package air conditioners
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Summary of Contents for Bard WA423
- Page 1 INSTALLATION INSTRUCTIONS WALL MOUNTED PACKAGE AIR CONDITIONERS MODELS WA381 WA423 WA484 WA491 WA602 Bard Manufacturing Company Manual : 2100-398 Supersedes: Bryan, Ohio 43506 File: Volume III Tab 16 Since 1914...Moving ahead just as planned. Date: 01-28-02 © Copyright 2002...
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Page 2: Table Of Contents
Contents Start Up Getting Other Information and Publications Important Installer Note ......... 14 High Pressure Switch ..........14 Wall Mount General Information Three Phase Scroll Compressor Start Up ..... 14 Heat Pump Wall Mount Model Nomenclature ..2 Phase Monitor ............14 Shipping Damage ............ -
Page 3: Getting Other Information And Publications
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. -
Page 4: Wall Mount General Information
WALL MOUNT GENERAL INFORMATION HEAT PUMP WALL MOUNT MODEL NOMENCLATURE CONTROL MODEL NUMBER – MODULES (See Chart Below) CAPACITY COIL OPTIONS 38 - 3 Ton X - Standard 42 - 3 1/2 Ton REVISIONS 1 - Phenolic Coated Evaporator 48 - 4 Ton COLOR OPTIONS 2 - Phenolic Coated Condenser 60 - 5 Ton... -
Page 5: Figure 1 Unit Dimensions
FIGURE 1 UNIT DIMENSIONS FRONT VIEW SIDE VIEW BACK VIEW MIS-1262... -
Page 6: Table 2 Electrical Specifications
TABLE 2 ELECTRICAL SPECIFICATIONS & 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 conform to NEC and all local codes. These “Minimum Circuit Ampacity” values are to be used for sizing the field power conductors. Refer to the National Electric Code (latest revision), article 310 for power conductor sizing. -
Page 7: Shipping Damage
& 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 conform to NEC and all local codes. These “Minimum Circuit Ampacity” values are to be used for sizing the field power conductors. Refer to the National Electric Code (latest revision), article 310 for power conductor sizing. -
Page 8: Duct Work
Any grille that meets with 5/8 inch louver criteria may CONDENSATE DRAIN be used. It is recommended that Bard Return Air Grille Kit RG2 through RG5 or RFG2 through RFG5 be A plastic drain hose extends from the drain pan at the installed when no return duct is used. -
Page 9: Installation Instructions
INSTALLATION INSTRUCTIONS WALL MOUNTING INFORMATION WARNING 1. Two holes for the supply and return air openings must 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 between the supply duct and a combustible unit without transmitting any unit vibration. -
Page 10: Figure 3 Mounting Instructions
FIGURE 3 MOUNTING INSTRUCTIONS MIS-416... -
Page 11: Figure 4 Electric Heat Clearance
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. -
Page 12: Figure 5 Wall Mounting Instructions
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. -
Page 13: Figure 7 Common Wall Mounting Installations
FIGURE 7 COMMON WALL MOUNTING INSTALLATIONS FREE AIR FLOW NO DUCT DUCTED SUPPLY RETURN AT UNIT CLOSET INSTALLATION FALSE WALL INSTALLATION MIS-550 Manual 2100-398 Page... -
Page 14: Wiring - Main Power
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 and maximum fuse or “HACR” type circuit breaker primary voltage transformers. All equipment leaves the size. -
Page 15: Figure 8 Unit 24V Terminal Board
FIGURE 8 UNIT 24V TERMINAL BOARD MIS-1373A Manual 2100-398 Page... -
Page 16: Start Up
START UP 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 The WA381, WA484, WA491 and WA602 models are... -
Page 17: Sequence Of Operation
WA391, WA484, WA491and WA602 models covered and cut in settings are fixed by specific air by this manual and is optional on the WA423 model. conditioner or heat pump unit model. The The compressor control is an anti-short cycle/lockout... -
Page 18: Figure 9 Fan Blade Setting
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 dimension for proper air delivery across the outdoor assembly out the left side of the unit. coil. -
Page 19: Table 7A Indoor Blower Performance
TABLE 7A INDOOR BLOWER PERFORMANCE 230V / 460V TABLE 8 RECOMMENDED AIRFLOW f r i TABLE 9 TABLE 9A MAXIMUM ESP OF OPERATION MAXIMUM ESP OF OPERATION ELECTRIC HEAT ONLY ELECTRIC HEAT ONLY Values shown are for units equipped with standard 1 inch throwaway filter or 1 inch washable filter. -
Page 20: Pressure Table
TABLE 10 PRESSURE TABLE COOLING Air Temperature Entering Outdoor Coil °F Low side pressure ± 2 PSIG High side pressure ± 5 PSIG Tables are based upon rated CFM (airflow) across the evaporator coil. If there is any doubt as to correct operating charge being in the system, the charge should be removed, system evacuated and recharged to serial plate instructions. -
Page 21: Optional Accessories
TABLE 11 OPTIONAL ACCESSORIES l a i i t n t a l i t n t a l i t n t a l t i u l l u t i u t i u t i u t i u t i u t i u...