INSTALLATION INSTRUCTIONS WALL MOUNTED PACKAGE AIR CONDITIONERS MODELS W38A1 W49A1 W61A1 Bard Manufacturing Company, Inc. Bryan, Ohio 43506 Since 1914...Moving ahead just as planned.
Contents Getting Other Information and Publications Wall Mount General Information 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 AIR CONDITIONER WALL MOUNT MODEL NOMENCLATURE W 38 A 1 A REVISION SERIES CAPACITY | 38 - 3 Ton 49 - 4 Ton 61 - 5 Ton 10 X X X X COLOR OPTIONS X - Beige 1 - White 4 - Buckeye Gray 5 - Desert Brown 8 - Dark Bronze A - Aluminum S - Stainless Steel VENTILATION OPTIONS X - Barometric Fresh Air Damper (Standard) B - Blank-off Plate M - Motorized Fresh Air Damper V - Commercial Ventilator - Motorized with Exhaust E - Economizer (Internal) - Fully Modulating with Exhaust
Manual 2100-530A Page 5 of 22 G F 5.75 22.432 W61A1 42.075 RETURN C B E F G I J K L M N O P Q R S1 S2 T Front View High Voltage Electrical Entrance Low Voltage Electrical Entrance Ventilation Air Vent Option Door Filter Access Panel C. Breaker/ Disconnect Access Panel (Lockable) Electric Heat Heater Access Panel Built In Rain Hood 4° Pitch Side View Cond. Air Inlet D K Drain J C H I A 2.
TABLE 2 ELECTRICAL SPECIFICATIONS Single Circuit Model W38A1 - A0Z A 05 A 08 A 10 A 15 W38A1 - B0Z B 06 B 09 B 15 W38A1 - C0Z C 06 C 09 C 15 W49A1 - A0Z 4 A 05 4 A 08 4 A 10 A 15 W49A1 - B0Z 4 B 06 B 09 4 B 15 W49A1 - C0Z 4 C 06 C 09 4 C 15 W61A1 - A0Z 4 A 05 4 A 08 4 A 10 A 15 W61A1- B0Z 4 B 06 4 B 09 B 15 W61A1 - C0Z 4 C 09 4 C 15 1 2 3 4 2 Rated No. Field 3 Minimum 1 Maximum 2 Field Circuit External Fuse Power Ground Volts Power Ampacity or Ckt. Brkr.
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 airflow requirement of the equipment. Air Conditioning Contractors of America (ACCA) is an excellent guide to proper sizing.
FILTERS CONDENSATE DRAIN A 1-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 1-inch washable filter and 2-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.
Manual 2100-530A Page 10 of 22 7 18" 16" 16" 16" 16" 16" 1 1 4" Typ. 1 1 62" C 5 1/2 6 1/4 C 38" Dimension is 21" on 95" tall Units. 4" Typ. 1" 3" 30" Return Opening Supply Opening A 12 10 1/2 B Wall Opening and Hole Location View 1 1 62" 1 62" C 32 REQUIRED DIMENSIONS TO MAINTAIN RECOMMENDED 1" CLEARANCE FROM COMBUSTIBLE MATERIALS D 30 1/2 REQUIRED DIMENSIONS TO MAINTAIN 1/4" MIN.
FIGURE 4 ELECTRIC HEAT CLEARANCE BELOW 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 2100-530A Page 12 of 22
FIGURE 7 COMMON WALL MOUNTING INSTALLATIONS Manual 2100-530A Page 13 of 22
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.
START UP THESE UNITS REQUIRE R-410A REFRIGERANT AND POLYOL ESTER OIL. REMEMBER: When adding R-410A refrigerant, it must come out of the charging cylinder/tank as a liquid to avoid any fractionation, and to insure optimal system performance. Refer to instructions for the cylinder that is being utilized for proper method of liquid extraction. GENERAL: 1. Use separate service equipment to avoid cross contamination of oil and refrigerants. 2. Use recovery equipment rated for R-410A refrigerant. 3.
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 W38A1, W49A1 and W61A1 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 Alarm Relay Output 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 for constant air circulation. On a call for heating, circuit R-W1 make at the thermostat pulling in heat contact for the strip heat and blower operation.
TROUBLESHOOTING REMOVAL OF FAN SHROUD FAN BLADE SETTING DIMENSIONS Shown 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 dimensions below be checked and blade adjusted in or out on the motor shaft accordingly. FIGURE 8 FAN BLADE SETTING 1. Disconnect all power to the unit. 2.
TABLE 5 INDOOR BLOWER PERFORMANCE CFM (0.00" – 0.50" H2O) 1 NOTE: Model Rated ESP 1 Max ESP 2 Blow er Only 3 Cooling 4 Electric H eat W38A .15 .50 1100 1100 1100 W49A .20 .50 1400 1400 1400 W61A .20 .50 1450 1450 1450 These units are equipped with a variable speed (ECM) indoor motor that automatically adjusts itself to maintain approximately the same rate of indoor airflow in both heating & cooling, dry & wet coil conditions and at both 230/208 or 460 volts.
NOTE: Part Number Description W38A1-A W38A1-B W38A1-C W49A1-A W49A1-B W49A1-C W61A1-A W61A1-B W61A1-C TABLE 7 OPTIONAL ACCESSORIES 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 CRVS-5 CRVS-5 EIFM-5C ERVF-A3-* ERVF-C3-* Commercial Ventilator w/Exhaust - Spring Return Commercial Ventilator w/Exhaust - Power Return Economizer with Exhaust Energy Recovery Ventilator (230V) Energy Recovery
TROUBLESHOOTING GE ECM™ MOTORS CAUTION: Symptom Cause/Procedure Disconnect power from unit before removing or replacing connectors, or servicing motor. To avoid electric shock from the motor’s capacitors, disconnect power and wait at least 5 minutes before opening motor. • Noisy blower or cabinet • Check for loose blower housing, panels, etc.
TROUBLESHOOTING GE ECM™ MOTORS CONT’D. Replacing ECM Control Module To replace the control module for the GE variable-speed indoor blower motor you need to take the following steps: 1. You MUST have the correct replacement module. The controls are factory programmed for specific operating modes. Even though they look alike, different modules may have completely different functionality. USING THE WRONG CONTROL MODULE VOIDS ALL PRODUCT WARRANTIES AND MAY PRODUCE UNEXPECTED RESULTS. 2.
