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Bard WA491 manual

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Table of contents for the manual

  • Page 1

    INST ALLA TION INSTRUCTIONS W ALL MOUNTED P ACKAGE AIR CONDITIONERS MODELS W A381 W A423 W A484 W A491 W A602 Manual : 2100-398A Supersedes: 2100-398 File: V olume III T ab 16 Date: 05-28-02 Bard Manufacturing Company Bryan, Ohio 43506 Since 1914...Moving ahead just as planned. © Copyright 2002[...]

  • Page 2

    Contents Figures Figure 1 Unit Dimensions ...................................... 3 Figure 2 Fresh Air Damper Assembly ................... 6 Figure 3 Mounting Instructions .............................. 8 Figure 4 Electric Heat Clearance .......................... 9 Figure 5 W all Mounting Instructions .................... 10 Figure 6 W all Mounting[...]

  • Page 3

    Manual 2100-398 Page 1 GETTING OTHER INFORMA TION AND PUBLICA TIONS 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. National Electrical Code ...................... ANSI/NFPA 70[...]

  • Page 4

    Manual 2100-398 Page 2 W ALL MOUNT GENERAL INFORMA TION HEAT PUMP WALL MOUNT MODEL NOMENCLATURE W A 42 3 – A 10 X N X X X A NOTE: All vent options are without exhaust capability. May require separate field supplied barometric relief in building. TABLE 1 ELECTRIC HEAT TABLE s l e d o M A - 1 8 3 A W A - 3 2 4 A W A - 4 8 4 A W A - 1 9 4 A W A - 2 [...]

  • Page 5

    Manual 2100-398 Page 3 MIS-1262 FIGURE 1 UNIT DIMENSIONS l e d o M h t d i W ) W ( h t p e D ) D ( t h g i e H ) H ( y l p p u Sn r u t e R EF G I J K L M N O P Q R S T A BCB 8 3 A W 2 4 A W 8 4 A W 9 4 A W 0 6 A W 5 7 0 . 2 42 3 4 . 2 25 7 8 . 4 88 8 . 98 8 . 9 28 8 . 5 18 8 . 9 28 8 . 3 40 1 . 9 16 6 . 1 30 0 . 0 38 6 . 2 34 9 . 6 29 6 . 4 33 4 .[...]

  • Page 6

    Manual 2100-398 Page 4 j Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors. k Based on 75 ° C copper wire. All wiring must conform to NEC and all local codes. l These “ Minimum Circuit Ampacity ” values are to be used for sizing the field power conductors. Refer to the National Electric [...]

  • Page 7

    Manual 2100-398 Page 5 j Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors. k Based on 75 ° C copper wire. All wiring must conform to NEC and all local codes. l These “ Minimum Circuit Ampacity ” values are to be used for sizing the field power conductors. Refer to the National Electric [...]

  • Page 8

    Manual 2100-398 Page 6 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. The internal filter brackets a[...]

  • Page 9

    Manual 2100-398 Page 7 INST ALLA TION INSTRUCTIONS W ARNING Failure to provide the 1/4 inch clearance between the supply duct and a combustible surface for the first 3 feet of duct can result in fire causing damage, injury or death. WALL MOUNTING INFORMATION 1. Two holes for the supply and return air openings must be cut through the wall as shown i[...]

  • Page 10

    Manual 2100-398 Page 8 FIGURE 3 MOUNTING INSTRUCTIONS MIS-416[...]

  • Page 11

    Manual 2100-398 Page 9 FIGURE 4 ELECTRIC HEAT CLEARANCE SIDE SECTION VIEW OF SUPPL Y AIR DUCT FOR W ALL MOUNTED UNIT SHOWING 1/4 INCH CLEARANCE TO COMBUSTIBLE SURF ACES. MIS-277 W ARNING 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 i[...]

  • Page 12

    Manual 2100-398 Page 10 FIGURE 5 WALL MOUNTING INSTRUCTIONS FIGURE 6 WALL MOUNTING INSTRUCTIONS MIS-548 MIS-549 SEE FIGURE 3 – MOUNTING INSTRUCTIONS SUPPLY AIR OPENING RETURN AIR OPENING RETURN AIR OPENING SUPPLY AIR OPENING BOTTOM MOUNTING BRACKET. MOUNT ON WALL BEFORE INSTALLING UNIT. RETURN AIR OPENING SUPPLY AIR OPENING WALL STRUCTURE FACTORY[...]

  • Page 13

    Manual 2100-398 Page 11 FIGURE 7 COMMON WALL MOUNTING INSTALLATIONS FREE AIR FLOW NO DUCT DUCTED SUPPLY RETURN AT UNIT FALSE WALL INSTALLATION CLOSET INSTALLATION MIS-550[...]

  • Page 14

    Manual 2100-398 Page 12 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. Depending on the installed KW of el[...]

  • Page 15

    Manual 2100-398 Page 13 FIGURE 8 UNIT 24V TERMINAL BOARD MIS-1373D[...]

  • Page 16

    Manual 2100-398 Page 14 ST ART UP IMPORTANT INSTALLER NOTE For improved start up performance wash the indoor coil with a dish washing detergent. HIGH PRESSURE SWITCH The WA381, WA484, WA491 and WA602 models are supplied with a remote reset high pressure switch. If tripped, this pressure switch may be reset by turning the thermostat off then back on[...]

  • Page 17

    Manual 2100-398 Page 15 SEQUENCE OF OPERATION COOLING – Circuit R-Y makes at thermostat pulling in compressor contactor, starting the compressor and outdoor motor. The G (indoor motor) circuit is automatically completed on any call for cooling operation or can be energized by manual fan switch on subbase of constant air circulation. On all 230 vo[...]

  • Page 18

    Manual 2100-398 Page 16 REMOVAL OF FAN SHROUD 1. Disconnect all power to the unit. 2. Remove the screws holding both grilles, one on each side of unit, and remove grilles. 3. Remove screws holding fan shroud to condenser and bottom. Nine (9) screws. FIGURE 9 FAN BLADE SETTING TROUBLESHOOTING 4. Unwire condenser fan motor. 5. Slide complete motor, f[...]

  • Page 19

    Manual 2100-398 Page 17 TABLE 9 MAXIMUM ESP OF OPERATION ELECTRIC HEAT ONLY V alues 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. l e d o M3 2 4 A W4 8 4 A W2 0 6 A W W K h g i H d e e p S w o L d e e p S h g i H d e e p S w o L d e e p S h g i H d e e p [...]

  • Page 20

    Manual 2100-398 Page 18 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. NOTE: Pressure table based on high[...]

  • Page 21

    Manual 2100-398 Page 19 TABLE 11 OPTIONAL ACCESSORIES WA381-A WA381-B WA381-C WA423-A WA423-B WA423-C WA484-A WA484-B WA484-C WA491-A WA491-B WA491-C WA602-A WA602-B WA602-C t r a P r e b m u Nn o i t p i r c s e D 5 0 A - 5 0 A W H E 8 0 A - 5 0 A W H E 0 1 A - 5 0 A W H E 5 1 A - 5 0 A W H E s e g a k c a P r e t a e H s e g a k c a P r e t a e H[...]