INSTALLATION INSTRUCTIONS WALL MOUNTED PACKAGE AIR CONDITIONERS Model: WA121 Bard Manufacturing Company, Inc. Bryan, Ohio 43506 Since 1914....Moving ahead just as planned.
CONTENTS Getting Other Informations and Publications 3 Wall Mount General Information Air Conditioner Wall Mount Model Nomenclature ..... 4 Shipping Damage ..................................................... 6 General ..................................................................... 6 Duct Work ................................................................. 7 Filters ........................................................................ 7 Fresh Air Intake .......................................
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.
WALL MOUNT GENERAL INFORMATION AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE WA MODEL NUMBER 12 1 – A 00 X X X X X J CONTROL MODULES E - Low Ambient Control J - Telecommunication CAPACITY 12 - 1 Ton REVISIONS VOLTS & PHASE A - 230/208/60/1 K - 115/60/1 KW 00 - No KW 02 - 2.2 KW 03 - 3.6 KW 05 - 5.
Manual Page 2100-234I 5 of 17 FACTORY BUILT AT 5 INCHES FIGURE 1 UNIT DIMENSIONS
TABLE 2 ELECTRICAL HEAT SPECIFICATIONS SINGLE CIRCUIT 3 1 2 2 Field Pow er Wire Siz e Ground Wire Siz e Rated Volts an d P h ase No.
DUCT WORK FRESH AIR INTAKE All duct work, supply and return must be properly sized for the design air flow requirement of the equipment. Air Conditioning Contractors of America (ACCA) is an excellent guide to proper sizing. All duct work or portions thereof not in the conditioned space should be properly insulated in order to both conserve energy and prevent condensation or moisture damage. All units are built with fresh air inlet slots punched in the service panel.
INSTALLATION INSTRUCTIONS WALL MOUNTING INFORMATION 1. These units are secured by wall mounting brackets which secure the unit to the outside wall surface at both sides. 2. On wood frame walls, the wall construction must be strong and rigid enough to carry the weight of the unit without transmitting any unit vibration. 3. Concrete block walls must be thoroughly inspected to insure that they are capable of carrying the weight of the installed unit. MOUNTING THE UNIT 1.
Manual Page 2100-234I 9 of 17 FIGURE 3 MOUNTING INSTRUCTIONS
FIGURE 4 WALL MOUNTING INSTRUCTIONS SEE FIGURE 3 - MOUNTING INSTRUCTIONS FIGURE 5 WALL MOUNTING INSTRUCTIONS SEE UNIT DIMENSIONS, FIGURE 1, FOR ACTUAL DIMENSIONS Manual 2100-234I Page 10 of 17
FIGURE 6 COMMON WALL-MOUNTING INSTALLATIONS Manual Page 2100-234I 11 of 17
WIRING – MAIN POWER WIRING – LOW VOLTAGE WIRING 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 electric heat, there may be two field power circuits required. If this is the case, the unit serial plate will so indicate.
FIGURE 7 LOW VOLTAGE WIRING Manual Page 2100-234I 13 of 17
START UP IMPORTANT INSTALLER NOTE For improved start up performance, wash the indoor coil with a dishwasher detergent. SERVICE HINTS the delay on make is complete and the high pressure switch (and low pressure switch if employed) is closed, the compressor contactor is energized. Upon shutdown the delay on break time starts and prevents restart until the delay on break and delay on make periods have expired. 1. Caution owner to maintain clean air filters at all times.
ADJUSTMENTS PRESSURE SERVICE PORTS Adjustable Delay on Make and Delay on Break Timer High and low pressure service ports are installed on all units so that the system operating pressures can be observed. Pressure chart can be found later in the manual covering all models. It is imperative to match the correct pressure chart to the unit by model number. The potentiometer is used to select Delay on Break time from 30 seconds to 5 minutes.
TROUBLESHOOTING TABLE 7 INDOOR BLOWER PERFORMANCE CFM @ 230V FAN BLADE SETTING DIMENSIONS Show in Figure 8 is the correct fan blade setting dimension for proper air delivery across the outdoor coil. Any service work requiring removal or adjustment in the fan and/or motor area will require that the dimension below be checked and blade adjusted in or out on the motor shaft accordingly. WA121 230V E.S.P. in H2O FIGURE 8 FAN BLADE SETTING DIMENSION Dry / Wet .0 .1 .2 .3 .
TABLE 10 PRESSURE TABLE COOLING Model WA121 Air Temperature Entering Outdoor Coil oF Return Air Temperature Pressure 75o 75 deg. D B 62 deg. WB Low S i de High Side 72 187 80 deg. D B 67 deg. WB Low S i de High Side 85 deg. D B 72 deg.
