Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Related Manuals for Bard WL421
Summary of Contents for Bard WL421
- Page 1 INSTALLATION INSTRUCTIONS WALL MOUNTED PACKAGE AIR CONDITIONERS MODELS WL421 WL482 WL602 Manual : 2100-277C Bard Manufacturing Company, Inc. Supersedes: 2100-277B Bryan, Ohio 43506 File: Volume III Tab 16 Since 1914...Moving ahead just as planned. Date: 09-20-01...
-
Page 2: Table Of Contents
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 Compressor Start Up .... -
Page 3: Getting Other Information And Publications
Getting Other Information and Publications These publications can help you install the air conditioner or For more information, contact these publishers: 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 CONTROL MODEL NUMBER – MODULES (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) -
Page 5: Figure 1 Unit Dimensions
Manual 2100-277 Page... -
Page 6: Table 2 Electrical Specifications
TABLE 2 ELECTRICAL SPECIFICATIONS À À Â Á Á Á Â Á & 1 Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors. 2 Based on 75° C copper wire. All wiring must conform to NEC and all local codes. 3 These “Minimum Circuit Ampacity”... -
Page 7: Shipping Damage
Any grille that meets with 5/8 inch louver criteria may be Size of unit for a proposed installation should be based on used. It is recommended that Bard Return Air Grille Kit heat loss calculation made according to methods of Air RG2 through RG5 or RFG2 through RFG5 be installed Conditioning Contractors of America (ACCA). -
Page 8: Filters
FILTERS All capacity, efficiency and cost of operation information as required for Department of Energy “Energyguide” Fact A one inch throwaway filter is supplied with each unit. The Sheets is based upon the fresh air blank-off plate in place filter slides into position making it easy to service. This and is recommended for maximum energy efficiency. -
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 unit between the supply duct and a combustible without transmitting any unit vibration. -
Page 10: Figure 3 Mounting Instructions
Manual 2100-277 Page 10... -
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 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 WALL STRUCTURE SEE FIGURE 3 – MOUNTING INSTRUCTIONS FACTORY SUPPLIED RAIN FLASHING. MOUNT ON UNIT BEFORE INSTALLATION SUPPLY AIR SUPPLY AIR SUPPLY AIR DUCT OPENING OPENING RETURN AIR RETURN 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 FALSE WALL INSTALLATION CLOSET INSTALLATION MIS-1050 Manual 2100-277 Page... -
Page 14: Wiring - Main Power
WIRING – MAIN POWER WIRING – LOW VOLTAGE WIRING Refer to the unit rating plate for wire sizing information and 230 / 208V, 1 phase and 3 phase equipment dual primary maximum fuse or “HACR” type circuit breaker size. Each voltage transformers. -
Page 15: Figure 8 Unit 24V Terminal Board
FIGURE 8 UNIT 24V TERMINAL BOARD MIS-1373 Manual 2100-277 Page... -
Page 16: Figure 9 Starting Procedure
3. Allow 4 hours or 60 minutes per pound of The decal in Figure 9 is affixed to all WL421 units detailing refrigerant in the system as noted on the unit start up procedure. This is very important. Please read rating plate, which ever is greater. -
Page 17: Service Hints
WL602 models covered by this manual and is optional alarm relay is employed. This terminal is powered on the WL421 model. The compressor control is an anti- whenever compressor is locked out due to HPC or LPC short cycle/lockout timer with high and low pressure switch sequences as described. -
Page 18: Adjustments
ADJUSTMENTS PHASE MONITOR Adjustable Delay on Make and Delay on Break All units with three phase scroll compressors are equipped Timer with a 3 phase line monitor to prevent compressor damage due to phase reversal. The potentiometer is used to select Delay on Break time from 30 seconds to 5 minutes. -
Page 19: Figure 10 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 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. -
Page 20: Pressure Table
TABLE 9 TABLE 8 MAXIMUM ESP OF OPERATION RECOMMENDED AIRFLOW ELECTRIC HEAT ONLY f r i * Rated CFM and ESP on high speed tap. Values shown are for units equipped with standard 1 inch throwaway filter or 1 inch washable filter. Derate ESP by .15 for 2 inch pleated filters. -
Page 21: Optional Accessories
TABLE 11 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 Manual 2100-277 Page...