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INSTALLATION INSTRUCTIONS
WALL-MOUNTED PACKAGED
K36A2-A
K36A2-N
K36L2-A
K36L2-N
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com
AIR CONDITIONER
Models:
K42A2-A
K42A2-N
K42L2-A
K42L2-N
K48A2-A
K60A2-A
K48A2-N
K60A2-N
K48L2-A
K60L2-A
K48L2-N
K60L2-N
Manual:
Supersedes:
Date:
2100-628
NEW
12-1-14
Page
1 of 24
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Summary of Contents for Bard K36A2-A
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Page 1: Installation Instructions
INSTALLATION INSTRUCTIONS WALL-MOUNTED PACKAGED AIR CONDITIONER Models: K36A2-A K42A2-A K48A2-A K60A2-A K36A2-N K42A2-N K48A2-N K60A2-N K36L2-A K42L2-A K48L2-A K60L2-A K36L2-N K42L2-N K48L2-N K60L2-N Bard Manufacturing Company, Inc. Manual: 2100-628 Bryan, Ohio 43506 Supersedes: Date: 12-1-14 www.bardhvac.com Page 1 of 24... -
Page 2: Table Of Contents
Contents Start Up ..............16 Getting Other Information and Publications General ............. 16 Topping Off System Charge ......... 16 Wall Mount General Information ......4 Safety Practices ..........16 Wall Mount Model Nomenclature ......4 Important Installer Note ........17 Shipping Damage .......... -
Page 3: Getting Other Information And Publications
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 THESE PUBLISHERS: at 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. -
Page 4: Wall Mount General Information
WALL-MOUNT GENERAL INFORMATION AIR CONDITIONER WALL-MOUNT MODEL NOMENCLATURE – CONTROL REVISION MODEL SERIES J – Low Ambient Control and Alarm Relay (Standard) CAPACITY 05 (1 PH) 36 – 3 Ton COIL OPTIONS 06 (3 PH) 42 – 3½ Ton VOLTS & PHASE COLOR OPTIONS 1 –... -
Page 5: Duct Work
DUCT WORK Any grille that meets with 5/8 inch louver criteria may be used. It is recommended that Bard Return Air All duct work, supply and return, must be properly Grille Kit RG5 or RFG5 be installed when no return sized for the design airflow requirement of the duct is used. -
Page 6: Installation
INSTALLATION WALL MOUNTING INFORMATION WARNING 1. Two holes for the supply and return air openings must be cut through the wall as shown in Figure 2 on page 8. 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... -
Page 7: Figure 1 Unit Dimensions
FIGURE 1 Dimensions of Basic Unit for Architectural and Installation Requirements (Nominal) Supply Return Width Depth Height Model K36A/L 42.075 22.432 84.875 9.88 29.88 15.88 29.88 43.88 13.56 31.66 30.00 32.68 26.94 34.69 32.43 3.37 43.00 23.88 10.00 1.44 16.00 1.88 K42A/L K48A/L 42.075 22.432 93.000 9.88 29.88 15.88 29.88 43.88 13.56 37.00 30.00 40.81 35.06 42.81 40.56 3.37 43.00 31.00 10.00 1.44 16.00 10.00... -
Page 8: Figure 2 Mounting Instructions - K36, 42, 48, 60
Manual 2100-628 Page 8 of 24... -
Page 9: Figure 3 Electric Heat Clearance
FIGURE 3 ELECTRIC HEAT CLEARANCE K36A2, K36L2, K42A2, K42L2, K48A2, K48L2, K60A2, K60L2 NOTE 1: 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. -
Page 10: Figure 4 Wall Mounting Instructions
FIGURE 4 WALL MOUNTING INSTRUCTIONS WALL STRUCTURE 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. -
Page 11: Figure 6 Common Wall Mounting Installations
FIGURE 6 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... -
Page 12: Wiring - Main Power
WIRING – MAIN POWER 18 guage copper, color-coded thermostat cable is recommended. See Figure 7 on page 14 for thermostat Refer to the unit rating plate for wire sizing information connections. and maximum fuse or circuit breaker size. Each outdoor unit is marked with a “Minimum Circuit Low Voltage Connection Ampacity”. -
Page 13: Humidity Control Option
"H1" and "H2" on the main controller board (see Figure 8 on page 15). Recommended is Bard Part # 8403-038 (H600A 1014). NOTE: Both HVAC units must be equipped with electric resistance heat for this sequence to work properly. -
Page 14: Figure 7 Thermostat Connections
FIGURE 7 THERMOSTAT CONNECTIONS Manual 2100-628 Page 14 of 24... -
Page 15: Figure 8 Mv4001K-B Controller Connections
LEAD MUST CONNECT TO LOCAL CU, AND SILVER MUST SILVER LEAD TO AG COPPER OPTIONAL FIELD INSTALLED REM 1 SILVER 35 FOOT TEMPERATURE SENSORS, BARD PART NUMBER 8612-023A COPPER REM 2 SILVER DIRTY FILTER ALARM (NC) OPTIONAL FIELD INSTALLED HUMIDITY HUMIDITY CONTROLLER "NO"... -
Page 16: Start Up
TOPPING OFF SYSTEM CHARGE 7. Never fill cylinders over 80% of total capacity. 8. Store cylinders in a cool area, out of direct If a leak has occurred in the system, Bard sunlight. Manufacturing recommends reclaiming, evacuating (see criteria above), and charging to the nameplate charge. -
Page 17: Important Installer Note
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 line monitor to prevent compressor damage due to phase reversal. HIGH PRESSURE SWITCH The phase monitor in this unit is equipped with two LEDs. -
Page 18: Sequence Of Operation
SEQUENCE OF OPERATION Recycling the wall thermostat resets the manual lockout. COOLING – Circuit R-Y makes at thermostat pulling in compressor contactor, starting the compressor and Alarm Relay Output outdoor motor. (See NOTE on previous page under Alarm terminal is output connection for applications Condenser Fan Operation if equipped with Low Ambient where alarm relay is employed. -
Page 19: Figure 9 Fan Blade Setting
SERVICE R-410A REFRIGERANT CHARGE FAN BLADE SETTING DIMENSIONS This unit was charged at the factory with the quantity Shown in Figure 9 is the correct fan blade setting for of refrigerant listed on the serial plate. AHRI capacity proper air delivery across the outdoor coil. Refer to and efficiency ratings were determined by testing with Table 4 for unit specific dimension. -
Page 20: Figure 10 Motor High Voltage Connections
“G” terminal. f. If the above diagnostics do not solve the NOTE: Bard Models PA13242; PA13302; PA13362-A, -B; PA13422-A, -B, -C; PA13482-A, -B, -C; PA13602-A, -B, -C 2. If the system is excessively noisy, does not appear problem, confirm the voltage checks in the contain the X13-Series Motors. -
Page 21: Figure 11 Motor Low Voltage Connections
2. Initiate a demand from the thermostat and check the Model X13 Communication Diagnostics voltage between the common and the appropriate motor The X13 motor is communicated through 24 VAC low voltage terminal (1-5). ("G" input is typically on terminal #1, but (Thermostat Control Circuit Wiring). -
Page 22: Table 5 Cooling Pressure Table
TABLE 5 COOLING PRESSURE TABLE OUTDOOR AMBIENT TEMPERATURE °C Return Air Model Pressure Temperature °C 27° DB Low Side 19° WB High Side K36*2 27° DB Low Side 19° WB High Side 27° DB Low Side 19° WB High Side K42*2 27°... -
Page 23: Table 6 Electric Specifications
TABLE 6 ELECTRICAL SPECIFICATIONS Single Circuit No. Field Rated Volts, Model Power Minimum Hertz & Phase Maximum Circuits Field Power Circuit External Fuse Ground Wire Wire Size Ampacity or Ckt. Brkr. K36A2-A0Z 208/230-60-1 -A05 K36A2-N0Z 400-60-3 -N05 K42A2-A0Z 208/230-60-1... -
Page 24: Table 7 Recommended Airflow
TABLE 7 RECOMMENDED AIRFLOW Nominal Nominal Recommended Model Rated Rated Airflow Range CFM * ESP * K36A, K36L 1100 930 - 1350 K42A, K42L 1300 1485 - 1070 K48A, K48L 1550 1750 - 1285 K60A, K60L 1600 1890 - 1335 * Rated CFM and ESP on factory speed connection.
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