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INSTALLATION INSTRUCTIONS
Q24H2DA
Q30H2DA
Q24H2DB
Q30H2DB
Q24H2DC
Q30H2DC
Q-TEC
PACKAGED HEAT PUMP
Models:
Q36H2DA
Q36H2DB
Q36H2DC
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com
SERIES
TM
Q42H2DA
Q42H2DB
Q42H2DC
Q48H2DA
Q60H2DA
Q48H2DB
Q60H2DB
Q48H2DC
Q60H2DC
Manual No.:
2100-603B
Supersedes:
2100-603A
Date:
8-3-16
Page
1 of 44
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Table of Contents
Troubleshooting
Related Manuals for Bard Q24H2DA
Summary of Contents for Bard Q24H2DA
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Page 1: Installation Instructions
PACKAGED HEAT PUMP Models: Q24H2DA Q30H2DA Q36H2DA Q42H2DA Q48H2DA Q60H2DA Q24H2DB Q30H2DB Q36H2DB Q42H2DB Q48H2DB Q60H2DB Q24H2DC Q30H2DC Q36H2DC Q42H2DC Q48H2DC Q60H2DC Bard Manufacturing Company, Inc. Manual No.: 2100-603B Bryan, Ohio 43506 Supersedes: 2100-603A Date: 8-3-16 www.bardhvac.com Page 1 of 44... -
Page 2: Table Of Contents
CONTENTS Getting Other Information and Publications tart Up For more information, contact these publishers: ..3 R-410A Refrgerant ..........27 Topping Off System Charge ........27 Q-TEC General Information Safety Practices ............. 27 Q-TEC Model Nomenclature ........4 Description of Standard Equipment ......28 Shipping Damage ............. -
Page 3: Getting Other Information And Publications
GETTING OTHER INFORMATION AND PUBLICATIONS FOR MORE INFORMATION, CONTACT THESE These publications can help you install the air conditioner or heat pump. You can usually find 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-Tec Model Nomenclature
Q-TEC Series General Information Q-TEC MODEL NOMENCLATURE MODEL HEAT FILTER OPTIONS NUMBER 0Z - 0KW PUMP 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 09 - 9KW... -
Page 5: Table 2 Electrical Specifications
TABLE 2 – ELECTRICAL SPECIFICATIONS Single Circuit Dual Circuit Minimum Maximum Rated Field Maximum Circuit External Fuse or Field Power Ground MODEL Volts & Minimum Field Power External Ground Ampacity Ckt. Breaker Wire Size Wire Size Phase... -
Page 6: Figure 1 Unit Dimensions
Manual 2100-603B Page 6 of 44... -
Page 7: 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 8: Handling Unit After Removal From Skid
HANDLING UNIT AFTER REMOVAL See Figure 4. The blade of the appliance cart should be slid under the wheels of the unit. The strap of the FROM SKID appliance cart should be placed around the unit and WARNING strapped tightly. Help will be required to tip the unit back onto the cart. -
Page 9: Figure 5 Installation With Duct Free Plenum
FIGURE 5 INSTALLATION WITH DUCT FREE PLENUM FIGURE 6 DUCTED APPLICATION Manual 2100-603B Page 9 of 44... -
Page 10: Duct Work
DUCT WORK For hot water coil option a QPBHWxx-F for free blow or QPBHWxx-D for ducted airflow is used. Any heat pump is more critical of proper operating When used with a ducted supply, a QCX Cabinet charge and an adequate duct system than a straight air Extension can be used to conceal the duct work above conditioning unit. -
Page 11: Fresh Air Intake
This fresh air assembly is located in the Optional Rear Drain Kit, Bard Model QCDS48A, is also rear of the unit and to gain access to make these available for these products. The optional rear drain kit adjustments remove the air filter service door. -
Page 12: Figure 9 Optional Side Drain
FIGURE 9 FIGURE 10 OPTIONAL SIDE DRAIN (SIDE VIEW) STANDARD REAR DRAIN Q-TEC UNIT FIGURE 11 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 13: Figure 12A Optional Rear Drain Kit
Manual 2100-603B Page 13 of 44... -
Page 14: 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 15: Figure 12C Optional Rear Drain Kit
FIGURE 12C REMOVE KNOCK-OUT FOR INDOOR DRAIN HOSE CONNECTOR (If Used) MIS-2471 Manual 2100-603B Page 15 of 44... -
Page 16: 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... -
Page 17: 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 18: Installation
INSTALLATION MOUNTING THE UNIT centered in the sleeve. Also check the alignment to the mounting brackets. This unit must be level When installing a Q-TEC unit near an interior wall on from side to side. If adjustments are necessary, the left side, a minimum of 8 inches is required; 12 shim up under the rollers with sheets of steel or inches is preferred. -
Page 19: Wiring - Main Power
WIRING – MAIN POWER The field wiring connections are located behind the top and hinged panel in the circuit breaker panel. See Refer to the unit rating plate and/or Table 2 for wire Figure 15. sizing information and maximum fuse or circuit breaker size. -
Page 20: Low Voltage Connections
If the unit is running in heat pump mode and the and the evaporator airflow will return to the heating airflow. humidistat calls for dehumidification, the When the thermostat is satisfied, the electric heaters will dehumidification mode takes precedence over the heat turn off and the airflow will be reduced and the system will pump heating mode. -
Page 21: General
GENERAL Removing the Y (compressor) signal alone turns the compressor off, but does not activate the additional This unit is equipped with a variable speed ECM motor. circuitry embedded in the heat pump for proper and The motor is designed to maintain rated airflow up to complete operation. -
Page 22: Figure 17 Thermostat Wiring Diagram "X" Option
FIGURE 17 REMOTE THERMOSTAT WIRING DIAGRAM “X” THERMOSTAT OPTION Manual 2100-603B Page 22 of 44... -
Page 23: Figure 18 T-Stat Diagram "X" Opt. & Demand Vent
FIGURE 18 REMOTE THERMOSTAT WIRING DIAGRAM “X” THERMOSTAT OPTION & DEMAND VENTILATION Manual 2100-603B Page 23 of 44... -
Page 24: Figure 19 Thermostat Wiring Diagram "E" Option
Manual 2100-603B Page 24 of 44... -
Page 25: Figure 20 T-Stat Wiring Diagram "I" Option
Wiring Diagram With "I" Thermostat Option FIGURE 20 UNIT MOUNTED THERMOSTAT WIRING DIAGRAM “I” THERMOSTAT OPTION CO Controller Bard Part #8403-067 24 VAC CO2-OUT TEMP-OUT Plug #4 8403-060 Thermostat W1/E Red/Yellow D/YO Purple/White Orange Yellow Blue Brown Red/White Black/White 4102-066 C... -
Page 26: Figure 21 T-Stat Wiring Diagram "J Or K" Opt
Manual 2100-603B Page 26 of 44... -
Page 27: Start Up
8. Store cylinders in a cool area, out of direct sunlight. TOPPING OFF SYSTEM CHARGE 9. Never heat cylinders above 125°F. If a leak has occurred in the system, Bard 10. Never trap liquid R-410A in manifold sets, gauge Manufacturing recommends reclaiming, evacuating lines or cylinders. R-410A expands significantly (see criteria above), and charging to the nameplate at warmer temperatures. -
Page 28: Description Of Standard Equipment
DESCRIPTION OF STANDARD PHASE MONITOR EQUIPMENT All units with three phase scroll compressors are equipped with a 3 phase line monitor to prevent Solid State Electronic Heat Pump Control compressor damage due to phase reversal. Provides efficient 30-minute defrost cycle. A thermistor sensor and speed up terminal for service The phase monitor in this unit is equipped with two along with a 10- minute defrost override are standard... -
Page 29: Service Hints
SERVICE HINTS 7. Annual maintenance is required to ensure that all of the systems are functioning properly. 1. Caution user to maintain clean air filters at all Check to make sure that the drains are not times. Also, not to needlessly close off supply air obstructed in any way. -
Page 30: Vent Options
VENT OPTIONS Q-TEC ENERGY RECOVERY VENTILATOR (Option) Before starting, make sure that the power has been BAROMETRIC FRESH AIR DAMPER (Standard) turned off. The return air grille panel must be Before starting, make sure the power has been turned removed. The energy recovery ventilator (QERV) can be off. -
Page 31: Figure 22 Fresh Air Damper Removal
FIGURE 22 FRESH AIR DAMPER REMOVAL MOUNTING SCREW Manual 2100-603B Page 31 of 44... -
Page 32: Figure 23 Qerv Removal
FIGURE 23 QERV REMOVAL POWER CONNECTORS MOUNTING SCREWS LOWER BLOWER ASSEMBLY POWER CONNECTOR FRONT FILL Manual 2100-603B Page 32 of 44... -
Page 33: Figure 24 Co
SEQUENCE OF OPERATION There is a check valve located in the reheat coil return line. It has a soft spring to hold the ball on the Cooling – Circuit R-Y makes the thermostat pull in seat. This will make the method of checking the ball the compressor contactor starting the compressor freedom with a magnet difficult. -
Page 34: Refrigerant Tube Schematic For Reheat Coil
REFRIGERANT TUBE SCHEMATIC FOR REHEAT COIL Figure 25 shows the refrigerant gas flow through the reheat coil during the dehumidification mode. When the unit is in standard cooling (Figure 26) or heating mode, the reheat coil is inactive. FIGURE 25 Q-TEC DEHUMIDIFICATION MODE CIRCUIT DIAGRAM Manual 2100-603B Page... -
Page 35: Pressure Service Ports
FIGURE 26 Q-TEC COOLING MODE CIRCUIT DIAGRAM PRESSURE SERVICE PORTS High and low pressure service ports are installed on all units so that the system operating pressures can be observed. Pressure curves can be found later in the manual covering all models on both cooling and heating cycles. -
Page 36: Defrost Cycle
DEFROST CYCLE There is an initiate defrost jumper (sen jump) on the control that can be used at any outdoor ambient during The defrost cycle is controlled by temperature and time the heating cycle to simulate a 0° coil temperature. on the solid state heat pump control. -
Page 37: Figure 27 Defrost Control Board
FIGURE 27 DEFROST CONTROL BOARD TIME (SEC) LOW PRESSURE BYPASS TIMER SWITCH 120* (FACTORY SETTING 120 SECONDS) ACCUMULATED RUN TIME SELECTOR (FACTORY SETTING 30 MIN.) MIS-2684 A Manual 2100-603B Page 37 of 44... -
Page 38: Troubleshooting
TROUBLESHOOTING SOLID STATE HEAT PUMP CONTROL 3. Turn thermostat blower to “auto” position. Indoor blower should stop. NOTE: Many models have a TROUBLESHOOTING PROCEDURE 1-minute blower time delay on “off” command; NOTE: A thorough understanding of the defrost wait for this to time-out. cycle sequence is essential. -
Page 39: Checking Temperature Sensor
CHECKING TEMPERATURE SENSOR 4. If sensor resistance reads very low, then sensor is shorted and will not allow proper operation of the 1. Disconnect temperature sensor from board and heat pump control. from outdoor coil. 5. If sensor is out of tolerance, shorted, open, or 2. -
Page 40: Troubleshooting Ecm™ Blower Motors
TROUBLESHOOTING 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 - Check for air whistling through seams in ducts, cabinets or panels from the motor’s capacitors, disconnect power and wait at... -
Page 41: Figure 28 Control Disassembly
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 8b. IF REPLACING AN ECM 2.3 CONTROL WITH AN ECM 2.3 To replace the control module for the GE variable-speed indoor blower control can be oriented in two positions 180°... -
Page 42: Fan Blade Setting Dimensions
FAN BLADE SETTING DIMENSIONS R-410A REFRIGERANT CHARGE Any service work requiring removal or adjustment in the This unit was charged at the factory with the quantity fan and/or motor area will require that the dimensions of refrigerant listed on the serial plate. AHRI capacity in Table 7 be checked and blade adjusted in or out of and efficiency ratings were determined by testing with the motor shaft accordingly. -
Page 43: Pressure Charts
TABLE 10 COOLING PRESSURE (ALL TEMPERATURES IN DEGREES F) RETURN AIR TEMPERATURE ENTERING OUTDOOR COIL MODEL PRESSURE 75° 80° 85° 90° 95° 100° 105° 110° 115° TEMP. 75 DB Low Side 62 WB High Side 80 DB Low Side Q24H2 67 WB High Side... -
Page 44: Table 11 Heating Pressure
TABLE 11 HEATING PRESSURE (ALL TEMPERATURES IN DEGREES F) RETURN AIR TEMPERATURE ENTERING OUTDOOR COIL MODEL PRESSURE TEMP. Low Side Q24H2D High Side Low Side Q30H2D High Side Low Side Q36H2D High Side Low Side Q42H2D High Side Low Side Q48H2D High Side Low Side...