Table of Contents
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Table of Contents
Related Manuals for Bard WA421
Summary of Contents for Bard WA421
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Page 1: Installation Instructions
INSTALLATION INSTRUCTIONS WALL MOUNTED PACKAGE AIR CONDITIONERS Bard Manufacturing Company Bryan, Ohio 43506 Since 1914...Moving ahead, just as planned. MODELS WA421 WA482 WA602 Manual : Supersedes: 2100-218H File: Date: 2100-218I Volume III Tab 16 04-19-99 © Copyright 1999... -
Page 2: Table Of Contents
Contents Getting Other Information and Publications ... 1 Wall Mount General Information ... 2 Heat Pump Wall Mount Model Nomenclature ... 2 Shipping Damage ... 5 General ... 5 Duct Work ... 5 Filters ... 6 Fresh Air Intake ... 6 Condensate Drain ... -
Page 3: Getting Other Information And Publications
Getting Other Information and Publications These publications can help you install the air conditioner or heat pump. You can usually find these at your local library or purchase them directly from the publisher. Be sure to consult current edition of each standard. -
Page 4: Wall Mount General Information
WALL MOUNT GENERAL INFORMATION HEAT PUMP WALL MOUNT MODEL NOMENCLATURE MODEL NUMBER CAPACITY 42 - 3 1/2 Ton 48 - 4 Ton REVISIONS 60 - 5 Ton VOLTS & PHASE VENTILATION OPTIONS A - 230/208/60/1 X - Barometric Fresh Air Damper (Standard) B - 230/208/60/3 B - Blank-off Plate C - 460/60/3... -
Page 5: Figure 1 Unit Dimensions
FRONT VIEW Optional top outlet (factory installed only) for WA30 and WA36 models only. FIGURE 1 UNIT DIMENSIONS SIDE VIEW BACK VIEW MIS-1262... -
Page 6: 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
5/8 inch. Any grille that meets with 5/8 inch louver criteria may be used. It is recommended that Bard Return Air Grille Kit RG2 through RG5 or RFG2 through RFG5 be installed when no return duct is used. -
Page 8: Filters
FILTERS A one inch throwaway filter is supplied with each unit. The filter slides into position making it easy to service. This filter can be serviced from the outside by removing the service door. A one inch washable filter and two inch pleated filter are also available as optional accessories. -
Page 9: 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. 2. On wood frame walls, the wall construction must be strong and rigid enough to carry the weight of the 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
ELECTRIC HEAT CLEARANCE MIS-277 WARNING 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. -
Page 12: Figure 5 Wall Mounting Instructions
SEE FIGURE 3 – MOUNTING INSTRUCTIONS SUPPLY AIR OPENING RETURN AIR OPENING FRAMING MATERIAL 2 X 4’S, 2 X 6’S AND/OR MIS-549 STRUCTURAL STEEL Manual 2100-218 Page 10 FIGURE 5 WALL MOUNTING INSTRUCTIONS SUPPLY AIR OPENING RETURN AIR OPENING FIGURE 6 WALL MOUNTING INSTRUCTIONS ATTACH TO TOP PLATE OF WALL... -
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 2100-218 Page... -
Page 14: Wiring - Main Power
WIRING – MAIN POWER Refer to the unit rating plate for wire sizing information and maximum fuse or “HACR” type circuit breaker size. Each outdoor unit is marked with a “Minimum Circuit Ampacity”. This means that the field wiring used must be sized to carry that amount of current. -
Page 15: Figure 8 Unit 24V Terminal Board
FIGURE 8 UNIT 24V TERMINAL BOARD MIS-1373 Manual 2100-218 Page... -
Page 16: Figure 9 Starting Procedure
The decal in Figure 9 is affixed to all WA421 units detailing start up procedure. This is very important. Please read carefully. -
Page 17: Service Hints
The compressor control module is standard on the WA482 and WA602 models covered by this manual and is optional on the WA421 model. The compressor control is an anti-short cycle/lockout timer with high and low pressure switch monitoring and alarm relay output. -
Page 18: Phase Monitor
Typical Settings for Dual Unit Installation: Unit 1: DOB set at 2 minutes, and DOM is 132 seconds Unit 2: DOB set at 4 minutes, and DOM is 144 seconds PHASE MONITOR All units with three phase scroll compressors are equipped with a 3 phase line monitor to prevent compressor damage due to phase reversal. -
Page 19: Figure 10 Fan Blade Setting
FAN BLADE SETTING DIMENSIONS Shown in Figure 10 is the correct fan blade setting dimension for proper air delivery across the outdoor coil. Any service work requiring removal or adjustment in the fan and/or motor area will require that the dimensions below be checked and blade adjusted in or out on the motor shaft accordingly. -
Page 20: Pressure Table
TABLE 8 RECOMMENDED AIRFLOW * Rated CFM and ESP on high speed tap. COOLING 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
l a i i t n t a l t i u l l u t i u t i u t i u TABLE 11 OPTIONAL ACCESSORIES i t n t a l i t n t a l Manual 2100-218 Page...