Bard YL302 Installation Instructions Manual

Wall mounted packaged air conditioner

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INSTALLATION
INSTRUCTIONS
WALL MOUNTED PACKAGED
AIR CONDITIONER
YL302
Model:
YL372
MIS-861
Manual No.:
2100-466
Supersedes:
Date:
07-18-05
© Copyright 2005

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Summary of Contents for Bard YL302

  • Page 1 WALL MOUNTED PACKAGED AIR CONDITIONER INSTALLATION INSTRUCTIONS YL302 Model: YL372 MIS-861 Manual No.: 2100-466 Supersedes: Date: 07-18-05 © Copyright 2005...
  • Page 2: Table Of Contents

    CONTENTS Getting Other Information and Publications Start Up For more information, Important Installer Note ......... 13 contact these publishers ......... 1 High Pressure Switch ........... 13 Three Phase Scroll Compressor Start Up Info ..13 Wall Mount General Information Phase Monitor ............13 Air Conditioner Wall Mount Model Nomenclature ...
  • Page 3: Getting Other Information And Publications

    Getting Other Information and Publications These publications can help you install the air FOR MORE INFORMATION, CONTACT THESE PUBLISHERS: 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 ACCA Air Conditioning Contractors of America standard.
  • Page 4: Wall Mount General Information

    WALL MOUNT GENERAL INFORMATION AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE MODEL NUMBER CONTROL MODULES YL 37 2 — A 10 X X X X X J - Standard On All Models CAPACITY 30 - 2½ Ton COIL OPTIONS 37 - 3 Ton X - Standard REVISIONS COLOR OPTIONS...
  • Page 5: Figure 1 Unit Dimensions

    Manual 2100-466 Page...
  • Page 6: Shipping Damage

    TABLE 3 ELECTRIC HEAT TABLE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 7: Filters

    Any grille that meets the 5/8 inch louver criteria, may be used. It is recommended that Bard Return Air Grille Kit CONDENSATE DRAIN RG-2 through RG-5 or RFG-2 through RFG-5 be A plastic drain hose extends from the drain pan at the installed when no return duct is used.
  • Page 8: Wall Mounting Information

    WALL MOUNTING INFORMATION 7. Secure rain flashing to wall and caulk across entire length of top. See Figure 3. 1. Two holes, for the supply and return air openings, 8. For additional mounting rigidity, the return air and must be cut through the wall as shown in Figure 3. supply air frames or collars can be drilled and 2.
  • Page 9: Wiring - Low Voltage Wiring

    WIRING – LOW VOLTAGE WIRING Five (5) wires should be run from thermostat subbase to the 24V terminal board in the unit. A five conductor, 18 230/208V, 1 phase and 3 phase equipment dual primary gauge copper, color-coded thermostat cable is voltage transformers.
  • Page 10: Figure 3 Mounting Instructions

    FIGURE 3 MOUNTING INSTRUCTIONS NOTE: It is recommended that a bead silicone caulking be placed behind the side mounting flanges and under the top SEAL WITH BEAD OF flashing at the time of installation. CHALKING ALONG ENTIRE LENGTH OF TOP RAIN FLASHING SUPPLIED 4 9/16...
  • Page 11: Figure 4 Wall-Mounting Instructions

    FIGURE 4 WALL MOUNTING INSTRUCTIONS SEE FIGURE 3 – MOUNTING INSTRUCTIONS FOR OPENING SIZES MIS-948 FIGURE 5 SEE UNIT DIMENSIONS WALL MOUNTING INSTRUCTIONS FIGURE 1 FOR ACTUAL DIMENSIONS MIS-1051 Manual 2100-466 Page...
  • Page 12: Figure 6 Common Wall-Mounting Installations

    FIGURE 6 COMMON WALL MOUNTING INSTALLATIONS MIS-1050 Manual 2100-466 Page...
  • Page 13: Figure 7 Electric Heat Clearances

    FIGURE 7 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 • 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.
  • Page 14: Figure 8 Low Voltage Wiring

    FIGURE 8 LOW VOLTAGE WIRING Manual 2100-466 Page...
  • Page 15: Start Up

    START UP IMPORTANT INSTALLER NOTE PHASE MONITOR For improved start-up performance, wash the indoor coil All units with three phase compressors are equipped with a dishwasher detergent. with a 3 phase line monitor to prevent compressor damage due to phase reversal. HIGH PRESSURE SWITCH The phase monitor in this unit is equipped with two LEDs.
  • Page 16: Compressor Control Module

    COMPRESSOR CONTROL MODULE Alarm Relay Output The compressor control module is optional on the Alarm terminal is output connection for applications models covered by this manual. The compressor control where alarm relay is employed. This terminal is is an anti-short cycle/lockout timer with high and low powered whenever compressor is locked out due to HPC pressure switch monitoring and alarm relay output.
  • Page 17: Figure 9 Fan Blade Setting

    TROUBLESHOOTING FAN BLADE SETTING DIMENSIONS The suction line temperatures in Table 8 are based upon 80ºF dry bulb/67ºF wet bulb (50 percent R.H.) Shown in the drawing below is the correct fan blade temperature and rated airflow across the evaporator setting dimension for proper air delivery across the during cooling cycle.
  • Page 18: Cooling Pressure Table

    TABLE 12 COOLING PRESSURE – OUTDOOR TEMPERATURE °F Low side pressure ± 2 psig High side pressure ± 5 psig Tables are based upon rated CFM (airflow) across the evaporator coil and should be found under section titled “refrigerant charge” elsewhere in manual. If there is any doubt as to correct charge being in the system, the charge should be removed, system evacuated and recharged to serial plate instructions.

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