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INSTALLATION INSTRUCTIONS
WALL MOUNTED
VARIABLE CAPACITY
ENVIRONMENTAL CONTROL UNITS
MODELS
W3RV1 W3LV1
W5RV1 W5LV1
W6RV1 W6LV1
Bard Manufacturing Company, Inc.
Manual : 2100-538E
Bryan, Ohio 43506
Supersedes: 2100-538D
File: Volume III Tab 16
Since 1914...Moving ahead just as planned.
Date: 12-15-11
Manual 2100-538E
Page 1 of 23
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Contents Getting Other Information and Publications 3 Start Up General .............................................................. 14 Wall Mount General Information Topping Off System Charge................................... 14 ECU Wall Mount Model Nomenclature .................... 4 Safety Practices..................................................... 14 Shipping Damage .................................................... 4 Important Installer Note .........................................
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GETTING OTHER INFORMATION AND PUBLICATIONS These publications can help you install the air FOR MORE INFORMATION, CONTACT conditioner or heat pump. You can usually find these at THESE PUBLISHERS: 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. 1712 New Hampshire Ave. N.W. Washington, DC 20009 Telephone: (202) 483-9370 National Electrical Code ...................... ANSI/NFPA 70 Fax
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WALL MOUNT GENERAL INFORMATION Environmental Control Unit (ECU) Wall-Mount Model Nomenclature W 3 R V 1– R 10 X X X X X X OTHER OPTIONS MODEL REVISIONS KW X - None SERIES Electric Wall-Mount Heat @ SPECIAL Rated SYSTEM DESIGN FEATURES Voltage COLOR OPTIONS Variable Capacity COIL OPTIONS (Digital Compressor) ECU X - Beige (Standard) X - Standard Copper Tube/Aluminum Fin 1- White 1 - Phenolic Coated Indoor Coil 4 - Buckeye Gray 2 - Phenolic Coated Outdoor Coil COMPRESSOR & ELECTRICAL RATING 5 - De
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DUCT WORK FILTERS All duct work, supply and return, must be properly sized A 1-inch throwaway filter is standard with each unit. for the design airflow requirement of the equipment. The filter slides into position making it easy to service. Air Conditioning Contractors of America (ACCA) is an This filter can be serviced from the outside by removing excellent guide to proper sizing. All duct work or the filter access panel. A 1-inch washable filter and 2- portions thereof not in the conditioned
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INSTALLATION INSTRUCTIONS WALL MOUNTING INFORMATION 1. Two holes for the supply and return air openings WARNING must be cut through the wall as shown in Figures 3A & 3B. Failure to provide the 1/4 inch clearance 2. On wood frame walls, the wall construction must be between the supply duct and a combustible strong and rigid enough to carry the weight of the surface for the first 3 feet of duct can result in unit without transmitting any unit vibration. fire causing damage, injury or death
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FIGURE 2 Dimensions of Basic Unit for Architectural and Installation Requirements (Nominal) SN UPPLY RETUR WIDTH DEPTH HEIGHT MODEL (W) (D) (H) AB C B E F G I J K L M N O P Q R S2 1 ST W3RV1 35 8.20013 7.1278 0.5678 .828 7.818 3.820 7.848 0.015 0.823 5.715 7.925 6.725 8.720 9.225 7.029 .735 9.124 2.799 .140 .110 2.0 12.0 5.00 W3LV1 W5RV1 42 2.07525 2.4388 4.8798 .828 9.818 5.828 9.846 3.816 3.530 1.638 0.034 2.629 6.933 4.637 2.438 .348 2.820 3.814 0.010 .410 6.0 16.0 1.88 W5LV1 W6RV1 42 2.0752
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Manual 2100-538E Page 8 of 23 FIGURE 3A W3RV1, W3LV1 MOUNTING INSTRUCTIONS SEAL WITH BEAD A B C D E OF CAULKING ALONG ENTIRE LENGTH OF TOP. REQUIRED DIMENSIONS TO MAINTAIN RAIN FLASHING 28 1/2 8 1/2 5 1/4 3 13/16 17 5/8 1/4" MIN. CLEARANCE FROM SUPPLIED COMBUSTIBLE MATERIALS REQUIRED DIMENSIONS TO MAINTAIN FOAM AIR SEAL TOP 30 10 4 1/2 4 9/16 16 7/8 RECOMMENDED 1" CLEARANCE FROM COMBUSTIBLE MATERIALS WALL STRUCTURE WALL 1/4" CLEARANCE ON ALL FOUR SIDES OF SUPPLY AIR DUCT IS REQUIRED FROM COMBUS
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Manual 2100-538E Page 9 of 23 FIGURE 3B W5RV1, W5LV1, W6RV1, W6LV1 MOUNTING INSTRUCTIONS SEAL WITH BEAD OF CAULKING ALONG ENTIRE LENGTH OF RAIN FLASHING SUPPLIED TOP. AB C D E REQUIRED DIMENSIONS TO MAINTAIN 30 1/2 10 1/2 6 1/4 1 1/4 29 3/4 FOAM AIR SEAL 1/4" MIN. CLEARANCE FROM TOP COMBUSTIBLE MATERIALS WALL STRUCTURE REQUIRED DIMENSIONS TO MAINTAIN 32 12 5 1/2 2 29 RECOMMENDED 1" CLEARANCE FROM COMBUSTIBLE MATERIALS 1/4" CLEARANCE ON ALL FOUR SIDES OF SUPPLY WALL AIR DUCT IS REQUIRED FROM COM
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FIGURE 4 ELECTRIC HEAT CLEARANCE W3RV1, W3LV1, W5RV1, W5LV1, W6RV1, W6LV1 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. Failure to do this could result in overheating the
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FIGURE 5 WALL MOUNTING INSTRUCTIONS WALL STRUCTURE SEE FIGURES 3A & 3B – MOUNTING INSTRUCTIONS FACTORY SUPPLIED RAIN FLASHING. MOUNT ON UNIT BEFORE INSTALLATION SUPPLY AIR SUPPLY AIR SUPPLY AIR DUCT OPENING OPENING RETURN AIR RETURN AIR RETURN AIR OPENING OPENING OPENING BOTTOM MOUNTING WOOD OR STEEL SIDING BRACKET. MOUNT ON WALL BEFORE INSTALLING UNIT. MIS-548 A CONCRETE BLOCK WALL INSTALLATION WOOD FRAME WALL INSTALLATION SIDE VIEW FIGURE 6 WALL MOUNTING INSTRUCTIONS SEE UNIT DIMENSIONS, FI
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FIGURE 7 COMMON WALL MOUNTING INSTALLATIONS SUPPLY DUCT MAY BE LOCATED IN AN ATTIC OR BELOW CEILING RAFTERS AS SHOWN RAIN RAIN FLASHING RAFTERS FLASHING RAFTERS FINISHED CEILING SURFACE SUPPLY AIR DUCT SUPPLY AIR DUCT FINISHED CEILING SURFACE W/ GRILLE RETURN AIR RETURN AIR OPENING W/ GRILLE OPENING W/ GRILLE OUTSIDE OUTSIDE WALL WALL FREE AIR FLOW DUCTED SUPPLY NO DUCT RETURN AT UNIT SUPPLY DUCT MAYBE LOCATED IN AN ATTIC SUPPLY DUCT MAYBE LOCATED IN AN ATTIC OR BELOW CEILING RAFTERS AS SHOWN
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240V to 208V tap. The acceptable operating voltage WIRING – MAIN POWER range for the 240 and 208V taps are: These units are rated for 60/50 Hz operation as follows. NOTE: This system must be controlled only by the Bard TAP RANGE 8403-064 Digital Thermostat/Controller that is 240 253 – 216 supplied with the unit. See below for Wiring and 208 220 – 187 Pages 16-17 for Operating Sequences. NOTE: The voltage should be measured at the field power Volts Operating connection point in the unit and w
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START UP REMEMBER: When adding R-410A refrigerant, it THESE UNITS REQUIRE R-410A must come out of the charging cylinder/tank as a liquid REFRIGERANT AND POLYOL to avoid any fractionation, and to insure optimal system performance. Refer to instructions for the cylinder that ESTER OIL. 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 WARNING
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START UP (Continued) IMPORTANT INSTALLER NOTE PHASE MONITOR For improved start up performance wash the indoor coil All units with three phase scroll compressors are with a dish washing detergent. equipped with a 3 phase 60/50 Hz line monitor to prevent compressor damage due to phase reversal. No changes required for 60 or 50 Hz operation. HIGH PRESSURE SWITCH The phase monitor in this unit is equipped with two All W*R/LV wall mounted air conditioner series models are supplied with a remote rese
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airflow will occur. Modulation is accomplished by SEQUENCE OF OPERATION modulating a 0-10 volt signal from OUT 7 to the indoor MODES OF OPERATION blower control board which then sends a PWM signal to Cool Only Mode: the indoor blower motor. • Compressor will modulate from 100% down to 20%. An additional option to maintain airflow at 100% is also • Compressor will cycle off if thermostat/controller set- available. This selection is done at the thermostat/ point is reached. controller under Fan
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COOLING SEQUENCE Control Compressor Operation Dl eviceNl orma Abnorma The cooling capacity of the WV series is controlled by Indoor Rt edLED li,GreenLED NoRedLED,andnoGreen loading or unloading the compressor. On a call for Motor flasheslongandshort flasheswhen2-10Vdcis Blower flasheswhenFaniscalled cooling, the unloader solenoid is energized for one presentfromSignalto Control for,2-10VdcfromSignalto Common. JumperisonP. second to ensure pressure equalization in the Board Common. Jumperison
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Alarm Relay Output COMPRESSOR CONTROL MODULE The compressor control module is standard on all Alarm terminal is output connection for applications models covered by this manual. The compressor control where alarm relay is employed. This terminal is module is an anti-short cycle/lockout timer with high powered whenever the compressor is locked out due to and low pressure switch monitoring and alarm relay HPC or LPC sequences as described. output. NOTE: Both high and low pressure switch controls
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TROUBLESHOOTING FAN BLADE SETTING DIMENSIONS REMOVAL OF FAN SHROUD 1. Disconnect all power to the unit. Shown in Figure 8 is the correct fan blade setting for proper air delivery across the outdoor coil. Refer to 2. Remove the screws holding both grilles, one on each Table 1 for unit specific dimension. side of unit, and remove grilles. Any service work requiring removal or adjustment in 3. Unwire condenser fan motor. the fan and/or motor area will require that the dimensions below be checked a
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TABLE 2 COOLING PRESSURE TABLE Air Temperature Entering Outdoor Coil °F (°C) 75 80 85 90 95 100 105 110 115 120 125 131 D.B/W.B. Model 1 1 1 1 1 Pressure (23.9) (26.7) (29.4) (32.2) (35.0) (37.8) (40.6) (43.3) (46.1) (48.9) (51.7) (55.0) 75 / 62F Low Side 128 127 127 127 128 129 130 132 135 (23.9/16.7C) High Side 355 373 394 416 442 469 498 530 565 W3RV 80 / 67F Low Side 137 136 136 136 139 139 139 141 144 W3LV (26.7/19.4C) High Side 364 383 404 427 444 481 511 544 579 85 / 72 Low Side 142 141
