INSTALLATION INSTRUCTIONS WALL MOUNTED PACKAGE AIR CONDITIONERS MODELS WA381 WA423 WA484 WA491 WA602 Bard Manufacturing Company, Inc. Bryan, Ohio 43506 Since 1914...Moving ahead just as planned.
Contents Start Up Important Installer Note ......................................... High Pressure Switch ............................................ Three Phase Scroll Compressor Start Up .............. Phase Monitor ....................................................... Condenser Fan Operation ..................................... Service Hints ......................................................... Sequence of Operation .......................................... Compressor Control Module ...........
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. FOR MORE INFORMATION, CONTACT THESE PUBLISHERS: ACCA Air Conditioning Contractors of America 1712 New Hampshire Ave. N.W.
WALL MOUNT GENERAL INFORMATION AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE WA 42 MODEL NUMBER 3 – A 10 X X X X X CONTROL MODULES (See Spec.
Manual 2100-398D Page 5 of 21 Depth Height (D) (H) B C A B Return Supply E F G I J K L M N O P Q R S T FRONT VIEW SIDE VIEW BACK VIEW WA38 WA42 WA48 42.075 22.432 84.875 9.88 29.88 15.88 29.88 43.88 19.10 31.66 30.00 32.68 26.94 34.69 32.43 3.37 43.00 23.88 10.00 1.44 16.00 1.
TABLE 2 ELECTRICAL SPECIFICATIONS SINGLE CIRCUIT 3 Rated Volts & P h ase Model 1 DUAL CIRCUIT 2 2 Maximum N o.
TABLE CONTINUED FROM PAGE 6 SINGLE CIRCUIT 3 Model Rated Volts & P h ase N o.
DUCT WORK FILTERS 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. A 1-inch throwaway filter is supplied with each unit. The filter slides into position making it easy to service.
INSTALLATION INSTRUCTIONS WALL MOUNTING INFORMATION 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 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.
Manual 2100-398D Page 10 of 21 FIGURE 3 MOUNTING INSTRUCTIONS
FIGURE 4 ELECTRIC HEAT CLEARANCE SIDE SECTION VIEW OF SUPPLY AIR DUCT FOR WALL MOUNTED UNIT SHOWING 1/4 INCH CLEARANCE TO COMBUSTIBLE SURFACES. 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. It is important to insure that the 1/4 inch minimum spacing is maintained at all points.
FIGURE 5 WALL MOUNTING INSTRUCTIONS SEE FIGURE 3 – MOUNTING INSTRUCTIONS FIGURE 6 WALL MOUNTING INSTRUCTIONS SEE UNIT DIMENSIONS, FIGURE 1, FOR ACTUAL DIMENSIONS Manual 2100-398D Page 12 of 21
FIGURE 7 COMMON WALL MOUNTING INSTALLATIONS Manual 2100-398D Page 13 of 21
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 8 UNIT 24V TERMINAL BOARD Manual 2100-398D Page 15 of 21
START UP IMPORTANT INSTALLER NOTE PHASE MONITOR For improved start up performance wash the indoor coil with a dish washing detergent. All units with three phase scroll compressors are equipped with a 3 phase line monitor to prevent compressor damage due to phase reversal. 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 again.
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 volt units there is a one-minute off delay on the blower motor. 460 volt models do not have an off delay.
TROUBLESHOOTING FAN BLADE SETTING DIMENSIONS 4. Unwire condenser fan motor. Shown in Figure 9 is the correct fan blade setting dimension for proper air delivery across the outdoor coil. 5. Slide complete motor, fan blade, and shroud assembly out the left side of the unit. 6. Service motor/fan as needed. Any service work requiring removal or adjustment in the fan and/or motor area will require that the dimensions below be checked and blade adjusted in or out on the motor shaft accordingly. 7.
TABLE 7A INDOOR BLOWER PERFORMANCE CFM @ 230V / 460V WA381 High Speed E.S.P. In H 2O Dry Coil .0 .1 .2 .
TABLE 10 PRESSURE TABLE COOLING Model Air Temperature Entering Outdoor Coil °F Return Air Temperature Pressure 75 80 85 90 95 100 105 110 115 75 deg. D B 62 deg. WB Low S i de High Side 74 175 74 187 75 202 76 216 78 232 79 249 79 265 80 284 81 302 80 deg. D B 67 deg. WB Low S i de High Side 79 179 79 192 80 207 81 222 83 238 84 255 85 272 86 291 87 310 85 deg. D B 72 deg.
WA602-C WA602-B WA602-A WA491-C WA491-B WA491-A WA484-C WA484-B WA484-A WA423-C WA423-B WA423-A WA381-C WA381-B WA381-A TABLE 11 OPTIONAL ACCESSORIES Part Number Description EHWA05-A05 EHWA05-A08 EHWA05-A10 EHWA05-A15 Heater Packages Heater Packages Heater Packages Heater Packages EHWA38-A05 EHWA38-A08 EHWA38-A10 EHWA49-A05 Heater Packages Heater Packages Heater Packages Heater Packages EHWA05-B09 EHWA05-B15 EHWA05-B18 Heater Packages Heater Packages Heater Packages EHWA38-B06 EHWA38
