INSTALLATION INSTRUCTIONS WALL MOUNTED PACKAGE AIR CONDITIONERS MODELS WA421 WA482 WA602 Bard Manufacturing Company Bryan, Ohio 43506 Since 1914...Moving ahead, just as planned.
Contents Getting Other Information and Publications .......... 1 Wall Mount General Information ............................. Heat Pump Wall Mount Model Nomenclature .......... Shipping Damage .................................................... General ................................................................ Duct Work ................................................................ Filters ................................................................ 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. For more information, contact these publishers: ACCA Air Conditioning Contractors of America 1712 New Hampshire Ave. N.W.
WALL MOUNT GENERAL INFORMATION HEAT PUMP WALL MOUNT MODEL NOMENCLATURE MODEL NUMBER CAPACITY 42 - 3 1/2 Ton 48 - 4 Ton 60 - 5 Ton WA 42 1 – A 10 X N X X REVISIONS COLOR OPTIONS X - Beige (Standard) 1 - White 2 - Mesa Tan 4 - Buckeye Gray 5 - Desert Brown 6 - Dark Bronze KW VOLTS & PHASE A - 230/208/60/1 B - 230/208/60/3 C - 460/60/3 CONTROL MODULES (See Chart Below) X A COIL OPTIONS X - Standard 1 - Phenolic Coated Evaporator 2 - Phenolic Coated Condenser 3 - Phenolic Coated Evaporator and
FIGURE 1 UNIT DIMENSIONS Width Model (W) Depth Height (D) (H) Supply A B Return C B E F G I J K L M N O P Q R S T WA42 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 42.88 23.88 10.00 1.44 16.00 1.88 WA48 Manual 2100-218 Page 3 FRONT VIEW SIDE VIEW * Optional top outlet (factory installed only) for WA30 and WA36 models only.
TABLE 2 ELECTRICAL SPECIFICATIONS SINGLE CIRCUIT DUAL CIRCUIT ➀ ➀ ➂ Model Maximum External Field ➁ Rated Field Minimum Fuse or Volts & Power Circuit Circuit Wire Wire Breaker Size Size Phase Circuits Ampacity ➂ Maximum Minimum External Fuse ➁ Power Ground ➁ ➁ Circuit Field Power Ground Ampacity Wire Size Wire Size CKT A CKT B CKT A CKT B CKT A CKT B CKT A CKT B WA421-A00, A0Z 1 33 50 8 10 N/A N/A N/A N/A N/A N/A N/A N/A A05 1 33 50 8 10 N/A N/A N/A
SHIPPING DAMAGE DUCT WORK 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. 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.
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.
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. MOUNTING THE UNIT 1.
Manual 2100-218 Page 8 FIGURE 3 MOUNTING INSTRUCTIONS MIS-416
FIGURE 4 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. 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 WALL STRUCTURE FACTORY SUPPLIED RAIN FLASHING. MOUNT ON UNIT BEFORE INSTALLATION SUPPLY AIR OPENING SUPPLY AIR OPENING SUPPLY AIR OPENING RETURN AIR OPENING RETURN AIR OPENING RETURN AIR OPENING BOTTOM MOUNTING BRACKET. MOUNT ON WALL BEFORE INSTALLING UNIT. MIS-548 FIGURE 6 WALL MOUNTING INSTRUCTIONS SEE UNIT DIMENSIONS, FIGURE 1, FOR ACTUAL DIMENSIONS ATTACH TO TOP PLATE OF WALL 1.
FIGURE 7 COMMON WALL MOUNTING INSTALLATIONS FREE AIR FLOW NO DUCT FALSE WALL INSTALLATION DUCTED SUPPLY RETURN AT UNIT CLOSET INSTALLATION MIS-550 Manual 2100-218 Page 11
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 MIS-1373 Manual 2100-218 Page 13
START UP IMPORTANT INSTALLER NOTE For improved start up performance wash the indoor coil with a dish washing detergent. CRANKCASE HEATERS FIGURE 9 STARTING PROCEDURE IMPORTANT WA421 units are provided with compressor crankcase heat. WA602 and WA482 units are not provided with crankcase heat. These units utilize scroll compressors which do not require crankcase heat in this application. THESE PROCEDURES MUST BE FOLLOWED AT INITIAL START UP AND AT ANY TIME POWER HAS BEEN REMOVED FOR 12 HOURS OR LONGER.
SERVICE HINTS 1. Caution homeowner to maintain clean air filters at all times. Also, not to needlessly close off supply and return air registers. This reduces air flow through the system, which shortens equipment service life as well as increasing operating costs. High Pressure Switch and Lockout Sequence 2. Switching to heating cycle at 75° F or higher outside temperature may cause a nuisance trip of the remote reset high pressure switch. Turn thermostat off then on to reset the high pressure switch.
Typical Settings for Dual Unit Installation: Unit 1: DOB set at 2 minutes, and DOM is 132 seconds Unit 2: DOB set at 4 minutes, and DOM is 144 seconds PHASE MONITOR All units with three phase scroll compressors are equipped with a 3 phase line monitor to prevent compressor damage due to phase reversal. The phase monitor in this unit is equipped with two LEDs. If the Y signal is present at the phase monitor and phases are correct the green LED will light.
TROUBLESHOOTING FAN BLADE SETTING DIMENSIONS 4. Unwire condenser fan motor. Shown in Figure 10 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. 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. 6. Service motor/fan as needed. 7.
TABLE 9 MAXIMUM ESP OF OPERATION ELECTRIC HEAT ONLY TABLE 8 RECOMMENDED AIRFLOW Model Rated CFM * Rated ESP * Recommended Airflow Range WA421 1400 .30 1600 - 1150 WA482 1550 .20 1750 - 1285 WA602 1700 .30 1950 - 1375 Model WA421 WA602 High Low High Low High Low Speed Speed Speed Speed Speed Speed KW * Rated CFM and ESP on high speed tap. WA482 -A05 -A10 -A15 -A20 .50 .50 .50 .50 .50 .50 .50 .45 .50 .50 .50 .50 .50 .50 .50 .45 .50 .50 .50 .50 .50 .50 .50 .
WA602-C WA602-B EHWA05-A05 EHWA05-A08 EHWA05-A10 EHWA05-A15 Heater Heater Heater Heater X X X X EHWA05-B09 EHWA05-B15 EHWA05-B18 Heater Packages Heater Packages Heater Packages EHWA05-C05 EHWA05-C15 Heater Packages Heater Packages BOP-5 BFAD-5 MFAD-5 Blank Off Plate Barometric Fresh Air Damper Motorized Fresh Air Damper X X X X X X X X X X X X X X X X X X X X X X X X X X X CRV-5 EIFM-5 WERV-A5B WERV-C5B Commercial Ventilator with Exhaust Economizer with Exhaust Energy Recovery Ventilato
