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Bard WA421 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 A421 W A482 W A602 Manual : 2100-218I Supersedes: 2100-218H File : V olume III T ab 16 Date: 04-19-99 Bard Manufacturing Company Bryan, Ohio 43506 Since 1914...Moving ahead, just as planned. © Copyright 1999[...]

  • 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 5 W all Mounti[...]

  • Page 3

    Manual 2100-218 Page 1 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. National Electrical Code ......................... ANSI/NFPA 7[...]

  • Page 4

    Manual 2100-218 Page 2 W ALL MOUNT GENERAL INFORMA TION HEAT PUMP WALL MOUNT MODEL NOMENCLATURE W A 42 1 – 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 2 4 A W A - 2 8 4 A W A - 2 0 6 A W B - 1 2 4 A W B - 2 [...]

  • Page 5

    Manual 2100-218 Page 3 FIGURE 1 UNIT DIMENSIONS MIS-1262 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 GIJ K L M N O P Q R S T A BCB 2 4 A W 8 4 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 . 2 37 3 . 38 8 . 2 48 8 . [...]

  • Page 6

    Manual 2100-218 Page 4 ➀ ➁ ➂ 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 con[...]

  • Page 7

    Manual 2100-218 Page 5 SHIPPING DAMAGE Upon receipt of equipment, the carton should be checked for external signs of shipping damage. If damage is found, the receiving party must contact the last carrier immediately, preferably in writing, requesting inspection by the carrier’s agent. GENERAL The equipment covered in this manual is to be installe[...]

  • Page 8

    Manual 2100-218 Page 6 FRESH AIR INTAKE All units are built with fresh air inlet slots punched in the service panel. If the unit is equipped with a fresh air damper assembly, the assembly is shipped already attached to the unit. The damper blade is locked in the closed position. To allow CONDENSATE DRAIN A plastic drain hose extends from the drain [...]

  • Page 9

    Manual 2100-218 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 2100-218 Page 8 FIGURE 3 MOUNTING INSTRUCTIONS MIS-416[...]

  • Page 11

    Manual 2100-218 Page 9 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 important to insure that the 1/4 inch minimum spacing is maintained at all points. Failure to do this could result in overheating the combustible material a[...]

  • Page 12

    Manual 2100-218 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 2100-218 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 2100-218 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 2100-218 Page 13 FIGURE 8 UNIT 24V TERMINAL BOARD MIS-1373[...]

  • Page 16

    Manual 2100-218 Page 14 THREE PHASE SCROLL COMPRESSOR START UP INFORMATION Scroll compressors, like several other types of compressors, will only compress in one rotational direction. Direction of rotation is not an issue with single phase compressors since they will always start and run in the proper direction. However, three phase compressors wil[...]

  • Page 17

    Manual 2100-218 Page 15 Low Pressure Switch, Bypass, and Lockout Sequence If the low pressure switch opens for more than 120 seconds, the compressor contactor will de-energize and go into a soft lockout. Regardless the state of the low pressure switch, the contactor will reenergize after the delay on make time delay has expired. If the low pressure[...]

  • Page 18

    Manual 2100-218 Page 16 PRESSURE SERVICE PORTS High and low pressure service ports are installed on all units so that the system operating pressures can be observed. A pressure table can be found later in the manual covering all models. It is imperative to match the correct pressure table to the unit by model number. PHASE MONITOR All units with th[...]

  • Page 19

    Manual 2100-218 Page 17 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 10 FAN BLADE SETTING TROUBLESHOOTING The suction line temperatures in table above are based u[...]

  • Page 20

    Manual 2100-218 Page 18 l e d o M d e t a R * M F C d e t a R * P S E d e d n e m m o c e R e g n a R w o l f r i A 1 2 4 A W0 0 4 10 3 .0 5 1 1 - 0 0 6 1 2 8 4 A W0 5 5 10 2 .5 8 2 1 - 0 5 7 1 2 0 6 A W0 0 7 10 3 .5 7 3 1 - 0 5 9 1 TABLE 8 RECOMMENDED AIRFLOW * Rated CFM and ESP on high speed tap. TABLE 9 MAXIMUM ESP OF OPERATION ELECTRIC HEAT ONL[...]

  • Page 21

    Manual 2100-218 Page 19 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 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 X X X X X X X X X X X X 9 0 B - 5 0 A W H E 5 1 B - 5 0 A W H E 8 1 B - 5 0 A W H E s e g a k[...]