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INSTALLATION INSTRUCTIONS
PACKAGED AIR CONDITIONER
Q24A2-A
Q30A2-A
Q24A2-B
Q30A2-B
Q24A2-C
Q30A2-C
Q-TEC
TM
Models:
Q36A2-A
Q36A2-B
Q36A2-C
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com
SERIES
Q42A2-A
Q48A2-A
Q42A2-B
Q48A2-B
Q42A2-C
Q48A2-C
Manual No.:
Supersedes: 2100-600B
Date:
Q60A2-A
Q60A2-B
Q60A2-C
2100-600C
5-25-18
Page
1 of 38
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Summary of Contents for Bard Q24A2-A
- Page 1 PACKAGED AIR CONDITIONER Models: Q24A2-A Q30A2-A Q36A2-A Q42A2-A Q48A2-A Q60A2-A Q24A2-B Q30A2-B Q36A2-B Q42A2-B Q48A2-B Q60A2-B Q24A2-C Q30A2-C Q36A2-C Q42A2-C Q48A2-C Q60A2-C Bard Manufacturing Company, Inc. Manual No.: 2100-600C Bryan, Ohio 43506 Supersedes: 2100-600B Date: 5-25-18 www.bardhvac.com Page 1 of 38...
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Page 2: Table Of Contents
CONTENTS tart Up Getting Other Information and Publications For more information, contact these publishers: ... 3 R-410A Refrgerant............27 Topping Off System Charge ........... 27 General Information Safety Practices.............. 27 Model Nomenclature .......... 4 Description of Standard Equipment ........ 28 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 standard. -
Page 4: Q-T Ec Model Nomenclature
Q-TEC™ Series General Information Q-TEC™ MODEL NOMENCLATURE MODEL FILTER OPTIONS NUMBER 0Z - 0KW CONDITIONER X - 1 inch Fiberglass COIL OPTIONS Q-TEC™ 05 - 5KW INTERNAL (Standard) X - Standard 06 - 6KW CONTROLS F - 2 inch Fiberglass REVISION | 1 - Phenolic coated CAPACITY... -
Page 5: Table 1 Factory Built-In Electric Heat Table
Manual 2100-600C Page 5 of 38... -
Page 6: Table 2 Electrical Specifications
TABLE 2 ELECTRICAL SPECIFICATIONS Single Circuit Dual Circuit Minimum j Maximum Rated Field Circuit External Fuse Field Power Ground Maximum Field MODEL Volts & Minimum Power External Power Ground Ampacity or Ckt. Breaker Wire Size Wire Size Phase Circuit... -
Page 7: Figure 1 Unit Dimensions
Manual 2100-600C Page 7 of 38... -
Page 8: Shipping Damage
SHIPPING DAMAGE FIGURE 2 AIR SEAL UNDER Q-TEC UNIT Upon receipt of equipment, the carton should be checked for external signs of shipping damage. The skid must remain attached to the unit until the unit is ready for installation. If damage is found, the receiving party must contact the last carrier immediately, preferably in writing, requesting inspection by the carrier’s agent. -
Page 9: Handling Unit After Removal From Skid
HANDLING UNIT AFTER REMOVAL The blade of the appliance cart should be slid under the wheels of the unit. The strap of the appliance cart FROM SKID should be placed around the unit and strapped tightly. WARNING Help will be required to tip the unit back onto the cart. The unit can be leaned far enough back to be rolled through the door. -
Page 10: Figure 5 Installation With Free Blow Plenum
FIGURE 5 INSTALLATION WITH FREE BLOW PLENUM FIGURE 6 DUCTED APPLICATION Manual 2100-600C Page 10 of 38... -
Page 11: Duct Work
DUCT WORK When used with a ducted supply, a QCX Cabinet Extension can be used to conceal the duct work above All duct work must be properly sized for the design the unit to the ceiling. This extends 20" above the airflow requirement of the equipment. -
Page 12: Fresh Air Intake
This fresh air assembly is located in the rear of the unit Optional Rear Drain Kit, Bard Model QCDS48A, and to gain access to make these adjustments remove is also available for these products. The optional the air filter service door. -
Page 13: Figure 9 Optional Side Drain
FIGURE 9 OPTIONAL SIDE DRAIN (SIDE VIEW) INSTALLATION UNIT FIGURE 10 FIGURE 11 STANDARD REAR DRAIN REAR DRAIN (TOP VIEW) DRAIN LINE WALL (MAXIMUM 10" FOR REAR DRAIN) SLEEVE COUPLINGS NOT SHOWN BUT RECOMMENDED FOR EASE OF REMOVABILITY FOR SERVICE. WALL BRACKET WATER... -
Page 14: Figure 12A Optional Rear Drain Kit
Manual 2100-600C Page 14 of 38... -
Page 15: Figure 12B Optional Rear Drain Kit
FIGURE 12B PLUG INSTALLED IN SIDE Q/Tec DRAIN REAR DRAIN CONNECTION IN Q/Tec PRODUCT IMPORTANT ! 1/2" SLIP X 1/2" SLIP X 3/4" NPT TEE SUPPLIED WITH DRAIN BOX KIT 3/4" PLASTIC PIPE NIPPLE (TIGHTEN THREADS SO TEE IS SUPPLIED WITH DRAIN BOX KIT HORIZONTAL TO FLOOR) (APPLY TEFLON TAPE TO THREADS) -
Page 16: Figure 12C Optional Rear Drain Kit
FIGURE 12C REMOVE KNOCK-OUT FOR INDOOR DRAIN HOSE CONNECTOR (If Used) MIS-2471 A Manual 2100-600C Page 16 of 38... -
Page 17: Figure 12D Optional Rear Drain Kit
FIGURE 12D DRAIN HOSE FROM INDOOR DRAIN PAN. MOVE HOSE FROM ATTACHMENT IN LOWER DRAIN PAN AND SLIDE ONTO DRAIN BOX BARB FITTING, SECURING WITH SUPPLIED CLAMP IF OUTDOOR PAN IS BYPASSED. ( WILL REDUCE RISK OF ALGAE GROWTH IN THE OUTDOOR PAN BUT AT A SLIGHT COOLING PERFORMANCE REDUCTION OF 2-3% ) MIS-2472 A... -
Page 18: Figure 13A Unit Mounting
FIGURE 13A UNIT MOUNTING SIDE TRIM (2 PCS.) ENLARGED VIEW OF MOUNTING BRACKET SHOWING SLEEVE TO CABINET ATTACHMENT SIDE TRIM (2 PCS.) MOUNTING BRACKET WALL SLEEVE #8 SCREW PROVIDED (LIGHT COLOR) MOUNTING BRACKET CABINET SIDE PANEL #10 HEX HEAD SCREW BOTTOM PROVIDED TRIM PIECE... -
Page 19: Installation Instructions
INSTALLATION INSTRUCTIONS MOUNTING THE UNIT alignment to the mounting brackets. This unit must be level from side to side. If adjustments When installing a Q-TEC unit near an interior wall on are necessary, shim up under the rollers with the left side, a minimum of 8 inches is required; 12 sheets of steel or any substance that is not inches is preferred. -
Page 20: Wiring - Main Power
WIRING – MAIN POWER The disconnect access door on this unit may be locked to prevent unauthorized access to the disconnect. Refer to the unit rating plate and/or Table 2 for wire See “Start Up” section for information on three phase sizing information and maximum fuse or “HACR scroll compressor start-ups. -
Page 21: Low Voltage Connections
The Climate Control Option B is an electronic, programmable thermostat and is BACnet compatible. LOW VOLTAGE CONNECTIONS The thermostat can be set in the heat, cool or automatic FOR DDC CONTROL mode. When the thermostat is set in the heat mode, it can heat only to maintain the temperature set on the Fan Only Energize G... -
Page 22: Figure 16 Thermostat Plug Terminals
TABLE 4 WALL THERMOSTATS Thermostat Predominant Features 8403-056 Carbon Dioxide Sensor with LCD for Sensor Readings (C7232A1008) 2 stage Cool; 2 stage Heat 8403-058 Electronic Non-Programmable (TH5220D1151) HP or Conventional Auto or Manual changeover 3 stage Cool; 3 stage Heat 8403-060 Programmable/Non-Programmable Electronic (1120-445) -
Page 23: Figure 17 Thermostat Wiring Diagram "X" Option
FIGURE 17 REMOTE THERMOSTAT WIRING DIAGRAM “X” THERMOSTAT OPTION 8403-082 or 8403-058 LOW VOLTAGE 8403-060 PLUG 2 8403-084 TH5220D1151 TERMINAL BLOCK ORANGE PURPLE BROWN/WHITE YELLOW BLUE W1/E BROWN RED/WHITE BLACK/WHITE BLUE "X" THERMOSTAT OPTIONS (FIELD WIRED) REMOVE JUMPER FOR 2 STAGE ELECTRIC HEAT OPERATION ON 15KW MODELS FACTORY INSTALLED JUMPER MIS-2693 A... -
Page 24: Figure 18 Thermostat Wiring Diagram "A" Option
FIGURE 18 UNIT MOUNTED THERMOSTAT WIRING DIAGRAM “B” OR “C” THERMOSTAT OPTION "B" CSB9E-THO "C" CSB9E-THOC Plug #2 Orange Purple Brown/White Yellow Blue W1/E Brown Red/White Black/White "B" OR "C" THERMOSTAT OPTION 4102-076 NOTE: On option X or A the CS2000A* (or other field provided means to control ventilation) must be used if any of the motorized ventilation options are installed. -
Page 25: Figure 19 Thermostat Wiring Diagram "D" Option
FIGURE 19 UNIT MOUNTED THERMOSTAT WIRING DIAGRAM “D” THERMOSTAT OPTION 8403-060 Plug #2 Orange Purple Brown/White Yellow Blue W1/E Brown Red/White Black/White "D" THERMOSTAT OPTION 4102-070 Manual 2100-600C Page 25 of 38... -
Page 26: Figure 20 Thermostat Wiring Diagram "H" Option
FIGURE 20 UNIT MOUNTED THERMOSTAT WIRING DIAGRAM “H” THERMOSTAT OPTION WITH CO "H" THERMOSTAT OPTION CO Controller Bard Part #8403-067 Red/White 24 VAC Black/White Relay Analog Part #8201-062 Plug #2 Purple Brown/White Orange Temp. and Humidity Yellow Controller Part #8403-060... -
Page 27: Start Up
8. Store cylinders in a cool area, out of direct TOPPING OFF SYSTEM CHARGE sunlight. If a leak has occurred in the system, Bard 9. Never heat cylinders above 125°F. Manufacturing recommends reclaiming, evacuating 10. Never trap liquid R-410A in manifold sets, gauge (see criteria above), and charging to the nameplate lines or cylinders. -
Page 28: Description Of Standard Equipment
START UP DESCRIPTION OF STANDARD PHASE MONITOR EQUIPMENT All units with three phase scroll compressors are equipped with a 3 phase line monitor to prevent High Pressure Switch compressor damage due to phase reversal. Provides refrigerant circuit high pressure protection. Includes lockout circuit that is resettable from room The phase monitor in this unit is equipped with two thermostat. -
Page 29: Figure 21 8201-164 Compressor Control Module
COMPRESSOR CONTROL MODULE Short Cycle Protection/Delay-on-Break An anti-short cycle timer is included to prevent short The compressor control module is standard on all cycling the compressor. This is adjustable from 30 models covered by this manual. seconds to 5 minutes via the adjustment knob. Once Features a compressor call is lost, the time period must expire before a new call will be initiated. -
Page 30: Service Hints
The conditions needed for the unit to enter test mode SERVICE HINTS are as follows: POT must start at a time less than or 1. Caution user to maintain clean air filters at all equal to the 40 second mark. The POT must then be times. -
Page 31: Mist Eliminator Service
MIST ELIMINATOR SERVICE 1. The two mounting screws in the front of the EIFM or CRV must be removed. A mist eliminator is supplied with the wall sleeve. The 2. The power connectors for the CRV (located on mist eliminator is constructed of an aluminum frame the right side of the unit) must be disconnected. -
Page 32: Figure 22 Fresh Air Damper Removal
FIGURE 22 FRESH AIR DAMPER REMOVAL MOUNTING SCREW Manual 2100-600C Page 32 of 38... -
Page 33: Figure 23 Qerv Removal
FIGURE 23 QERV REMOVAL POWER CONNECTORS MOUNTING SCREWS LOWER BLOWER ASSEMBLY POWER CONNECTOR FRONT FILL Manual 2100-600C Page 33 of 38... -
Page 34: Figure 24 Co
PRESSURE SERVICE PORTS SEQUENCE OF OPERATION Cooling – Circuit R-Y makes the thermostat pull in High and low pressure service ports are installed on the compressor contactor starting the compressor all units so that the system operating pressures can be observed. -
Page 35: Troubleshooting Troubleshooting Ge Ecm™ Blower Motors
TROUBLESHOOTING GE ECM MOTORS ™ CAUTION: Symptom Cause/Procedure • Noisy blower or cabinet • Check for loose blower housing, panels, etc. Disconnect power from unit before removing or replacing • High static creating high blower speed? connectors, or servicing motor. To avoid electric shock from - Check for air whistling through seams in the motor’s capacitors, disconnect power and wait at least 5 ducts, cabinets or panels... -
Page 36: Figure 25 Control Disassembly
TROUBLESHOOTING GE ECM ™ MOTORS CONT’D. TROUBLESHOOTING GE ECM MOTORS CONT’D. ™ 8b. IF REPLACING AN ECM 2.3 CONTROL WITH AN ECM 2.3 Replacing ECM Control Module CONTROL, the plastic tab and shorter through-bolts are not needed. The Replacing ECM Control Module To replace the control module for the GE variable-speed indoor blower 8b. -
Page 37: Figure 28 Fan Blade Setting
R-410A FAN BLADE SETTING DIMENSIONS Any service work requiring removal or adjustment REFRIGERANT CHARGE in the fan and/or motor area will require that the dimensions in Table 5 be checked and blade adjusted in This unit was charged at the factory with the quantity of or out of the motor shaft accordingly. -
Page 38: Pressure Chart
TABLE 7 COOLING PRESSURE (ALL TEMPERATURES IN DEGREES F) RETURN AIR TEMPERATURE ENTERING OUTDOOR COIL MODEL PRESSURE TEMP. 75 DB Low Side 62 WB High Side 80 DB Low Side Q24A2 67 WB High Side 85 DB Low Side 72 WB High Side 75 DB Low Side...
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