Table of Contents
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INSTALLATION
INSTRUCTIONS
THESE MODELS ALL USE REFRIGERANT R-407C
and ARE FOR 50HZ OPERATION.
WALL MOUNTED PACKAGED
AIR CONDITIONER
Models:
Bard Manufacturing Company
Bryan, Ohio 43506
Since 1914...Moving ahead, just as
planned.
WE252
WE301
WE371
WE421
WE482
WE602
WE701
MIS-383
Manual No.:
Supersedes:
File:
Date:
2100-385B
2100-385A
Volume III, Tab 16
04-25-05
© Copyright 2002
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Table of Contents
Related Manuals for Bard WE252
Summary of Contents for Bard WE252
- Page 1 WE421 WE482 WE602 WE701 THESE MODELS ALL USE REFRIGERANT R-407C and ARE FOR 50HZ OPERATION. MIS-383 Manual No.: 2100-385B Bard Manufacturing Company Supersedes: 2100-385A Bryan, Ohio 43506 File: Volume III, Tab 16 Since 1914...Moving ahead, just as Date: 04-25-05 planned.
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Page 2: Table Of Contents
CONTENTS Getting Other Information ........1 Start Up Important Installer Note ........14 Wall Mount General Information High Pressure Switch ........14 Model Nomenclature ..........2 Service Hints ............14 Shipping Damage ..........5 Sequence of Operations ........14 General ..............5 Compressor Control Module ...... -
Page 3: Getting Other Information
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 AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE — CONTROL REVISIONS MODEL NUMBER MODULES OUTLET OPTIONS X - FRONT (STANDARD) VOLTS & PHASE CAPACITY D - 240/220-50-1 25 - 2 TON F - 415/380-50-3 30 - 2-1/2 TON 37 - 3 TON COIL OPTIONS 42 - 3-1/2 TON... -
Page 5: 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 6: Figure 1 Unit Dimensions
Manual 2100-385B Page... -
Page 7: Shipping Damage
Any grille that meets the 5/8 inch louver criteria may be made. See Page 1 for information on codes and used. It is recommended that Bard Return Air Grille Kit standards. RG-2 thru RG-5 or RFG-2 thru RFG-5 be installed when Size of unit for a proposed installation should be based no return duct is used. -
Page 8: Filters
FILTERS position. To allow the damper to operate, the maximum and minimum blade position stops must be installed. A 1-inch throwaway filter is supplied with each unit. See Figure 2. The filter slides into position making it easy to service. Capacity and efficiency is based upon the fresh air This filter can be serviced from the outside by removing blank-off plate in place and is recommended for... -
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
Manual 2100-385B Page... -
Page 11: Figure 4 Electric Heat Clearance
1-inch clearance is used for ease of installation and maintaining the required clearance to combustible material This requirement does not apply to Model WE252 as it is approved for 0 inch clearance of duct work. WARNING minimum of 1/4 inch clearance must be maintained between the supply air duct and combustible materials. -
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 SUPPLY AIR SUPPLY AIR AIR DUCT OPENING OPENING RETURN RETURN AIR RETURN AIR AIR DUCT OPENING OPENING BOTTOM MOUNTING BRACKET. -
Page 13: Figure 7 Common Wall-Mounting Instructions
FIGURE 7 COMMON WALL-MOUNTING INSTALLATIONS SUPPLY DUCT MAY BE LOCATED IN AN ATTIC OR BELOW CEILING RAFTERS AS SHOWN RAIN RAIN FLASHING FLASHING RAFTERS RAFTERS SUPPLY AIR DUCT W / GRILLE SUPPLY AIR DUCT FINISHED CEILING SURFACE FINISHED CEILING SURFACE RETURN AIR OPENING RETURN AIR OPENING W / GRILLE... -
Page 14: Wiring - Main Power
WIRING — MAIN POWER WIRING — LOW VOLTAGE WIRING 230/208V – 1 phase and 3 phase equipment dual Refer to the unit rating plate for wire sizing information primary voltage transformers. All equipment leaves the and maximum fuse or “HACR" type circuit breaker factory wired on 240V tap. -
Page 15: Figure 8 Low Voltage Wiring Diagram
FIGURE 8 LOW VOLTAGE WIRING DIAGRAM MIS-1373 Manual 2100-385B Page... -
Page 16: Start Up
START UP IMPORTANT INSTALLER NOTE Adjustable Delay On Make And Break Timer For improved start-up performance, wash the indoor On initial power up or any time power is interrupted to coil with a dish washing detergent. the unit the delay on make period begins which will be 2 minutes plus 10% of the delay on break setting. -
Page 17: Adjustments
ADJUSTMENTS PHASE MONITOR Adjustable Delay on Make and Delay on Break All units with three phase 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 18: Figure 9 Fan Blade Setting
TROUBLESHOOTING REFRIGERANT CHARGE FAN BLADE SETTING DIMENSIONS The system is charged with R-407C. The correct Shown in Figure 9 is the proper method to measure the quantity is shown on the unit rating plate. Optimum unit fan blade location. performance will occur with a refrigerant charge Any service work requiring removal or adjustment in the resulting in a suction line temperature (6 inches from fan and/or motor area will require that the fan blade... -
Page 19: Table 8 Indoor Blower Performance
TABLE 8 INDOOR BLOWER PERFORMANCE CFM (m /s) at 220V Above data is with 1-inch (25mm) standard disposable filter and 1-inch (25mm) washable filter. For optional 2-inch (51mm) pleated filter reduce ESP by .15 inches (37.33 Pa). TABLE 9 MAXIMUM ESP OF OPERATION ELECTRIC HEAT ONLY - - - - - -... -
Page 20: Cooling Pressures
TABLE 10 PRESSURE TABLE COOLING AIR TEMPERATURE ENTERING OUTDOOR COIL ° 5 ° 0 ° 5 ° 0 ° 5 ° 0 ° 5 ° 0 ° 5 ° 5 ° 2 ° 0 ° 7 ° 5 ° 2 °... -
Page 21: Optional Accessories
TABLE 11 OPTIONAL ACCESSORIES l a i i t n t a l l a i i t n t a l l a i i t n t a l Manual 2100-385B Page... -
Page 22: R-407C Refrigerant Service Procedures & Considerations
“Liquid Temperature” column on the pressure temperature chart. All Bard “WE” models have a pressure tap in the Notice: suction line and the liquid line. When opening a system, care must be taken to See Pressure Temperature Table 12 on page 21. - Page 23 TABLE 12 R-407C SATURATED VAPOR/LIQUID TEMPERATURE/PRESSURE CHART ) ° ) ° ) ° ) ° Manual 2100-385B Page...