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INSTALLATION
INSTRUCTIONS
QTEC SERIES
PACKAGED HEAT PUMP
Q24H1D
Q36H1D
Q48H1D
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
Since 1914 . . . Moving ahead, just as planned.
Models:
Q30H1D
Q42H1D
Q60H1D
Manual:
Supersedes: 2100-521A
File:
Date:
2100-521B
Vol II Tab 14
02-06-12
Manual 2100-521B
Page
1 of 48
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Table of Contents
Troubleshooting
Related Manuals for Bard Q24H1D
Summary of Contents for Bard Q24H1D
- Page 1 PACKAGED HEAT PUMP INSTALLATION Models: INSTRUCTIONS Q24H1D Q30H1D Q36H1D Q42H1D Q48H1D Q60H1D Bard Manufacturing Company, Inc. Manual: 2100-521B Supersedes: 2100-521A Bryan, Ohio 43506 File: Vol II Tab 14 Since 1914 . . . Moving ahead, just as planned. Date: 02-06-12...
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Page 2: Table Of Contents
CONTENTS Start Up Getting Other Information and Publications R-410A Refrigerant: For more information, contact these publishers: ..3 General ..............29 Topping Off System Charge ........29 General Information Safety Practices ............. 29 Model Nomenclature ........4 Shipping Damage ............ 8 Description of Standard Equipment ...... -
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 at PUBLISHERS: your local library or purchase them directly from the publisher. Be sure to consult current edition of each standard. -
Page 4: Qt Ec Model Nomenclature
Series General Information MODEL NOMENCLATURE MODEL HEAT FILTER OPTIONS NUMBER PUMP X - 1-Inch Fiberglass Q - QT COIL OPTIONS (Standard) 0Z - 0KW X - Standard F - 2-Inch Fiberglass CAPACITY | 05 - 5KW 24 - 2 Ton P - 2-Inch Pleated 06 - 6KW INTERNAL CONTROLS... -
Page 5: Table 2 Electrical Specifications
TABLE 2 ELECTRICAL SPECIFICATIONS t i u t i u i n i i n i t i u t i u s t l y t i . t k s t i y t i . t k . -
Page 6: Table 2A Electrical Specifications
TABLE 2A ELECTRICAL SPECIFICATIONS (continued from Page 5) t i u t i u i n i i n i t i u s t l t i u y t i . t k s t i y t i . -
Page 7: Figure 1 Unit Dimensions
Manual 2100-521B Page 7 of 48... -
Page 8: Shipping Damage
SHIPPING DAMAGE FIGURE 2 AIR SEAL UNDER QT 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. Help will be required to tip the unit back onto the cart. WARNING 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 2100-521B Page 10 of 48... -
Page 11: Duct Work
For hot water coil option a QPBHWxx-F for free blow DUCT WORK 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 12: Fresh Air Intake
For details on energy recovery ventilation see Page 31 for details. OPTIONAL REAR DRAIN KITS Optional Rear Drain Kit, Bard Model QCDS48A, is SERVICE LIGHT also available for these products. The optional rear drain kit offers multiple benefits that include the... -
Page 13: Figure 9 Optional Side Drain
FIGURE 9 FIGURE 10 OPTIONAL SIDE DRAIN (SIDE VIEW) STANDARD REAR DRAIN INSTALLATION UNIT DRAIN LINE FIGURE 11 REAR DRAIN (TOP VIEW) WALL (MAXIMUM 10" FOR REAR DRAIN) COUPLINGS NOT SHOWN BUT SLEEVE RECOMMENDED FOR EASE OF REMOVABILITY FOR SERVICE. WALL BRACKET WATER... -
Page 14: Figure 12Aoptional Rear Drain Kit
Manual 2100-521B Page 14 of 48... -
Page 15: Figure 12Boptional 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 12Coptional Rear Drain Kit
FIGURE 12C REMOVE KNOCK-OUT FOR INDOOR DRAIN HOSE CONNECTOR (If Used) MIS-2471 Manual 2100-521B Page 16 of 48... -
Page 17: Figure 12Doptional 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 18: Figure 13A Unit Mounting - Method 1
FIGURE 13A UNIT MOUNTING - Method 1 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 PROVIDED BOTTOM... -
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 QT unit near an interior wall on the are necessary, shim up under the rollers with left side, a minimum of 8 inches is required;... -
Page 20: Wiring - Main Power
The disconnect access door on this unit may be locked WIRING – MAIN POWER to prevent unauthorized access to the disconnect. Refer to the unit rating plate and/or Table 2/2A for wire See Start Up section for information on three phase sizing information and maximum fuse or “HACR Type”... -
Page 21: Low Voltage Connections
LOW VOLTAGE CONNECTIONS LOW VOLTAGE CONNECTIONS These units use a grounded 24 volt AC low voltage circuit. DDC CONTROL The “R” terminal is the hot terminal and the “C” Fan Only Energize G terminal is grounded. Cooling Mode Energize Y, G “G”... -
Page 22: Figure 16 Thermostat Plug Terminals
TABLE 4 WALL THERMOSTATS ; l o ; l o FIGURE 16 MIS-1285 Manual 2100-521B Page 22 of 48... -
Page 23: Figure 17 Dehum. Wiring W/"X" T-Stat
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Page 24: Figure 18 Dehum. Wiring W/"X" T-Stat & Demand
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Page 25: Figure 19 Dehum. Wiring W/"X" T-Stat & Vent Opt
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Page 26: Figure 20 Dehum. Wiring W/"E" T-Stat
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Page 27: Figure 21 Dehum. Wiring W/"G" T-Stat
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Page 28: Figure 22 Dehum. Wiring W/" I " T-Stat
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Page 29: Start Up
7. Never fill cylinders over 80% of total capacity. TOPPING OFF SYSTEM CHARGE 8. Store cylinders in a cool area, out of direct If a leak has occurred in the system, Bard Manufacturing sunlight. recommends reclaiming, evacuating (see criteria above), 9. -
Page 30: 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 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 along with a The phase monitor in this unit is equipped with two 10- minute defrost override are standard on the... -
Page 31: Service Hints
SERVICE HINTS g. Remove screws that attach the duct work to the unit flanges. 1. Caution user to maintain clean air filters at all This unit is equipped with four rollers times. Also, not to needlessly close off supply air mounted to the base. -
Page 32: Vent Options
VENT OPTIONS R ENERGY RECOVERY VENTILATOR (Option) BAROMETRIC FRESH AIR DAMPER (Standard) Before starting, make sure that the power has been Before starting, make sure the power has been turned turned off. The return air grille panel must be removed. off. -
Page 33: Figure 23 Fresh Air Damper Removal
FIGURE 23 FRESH AIR DAMPER REMOVAL MOUNTING SCREW Manual 2100-521B Page 33 of 48... -
Page 34: Figure 24 Qerv Removal
FIGURE 24 QERV REMOVAL POWER CONNECTORS MOUNTING SCREWS LOWER BLOWER ASSEMBLY POWER CONNECTOR FRONT FILL Manual 2100-521B Page 34 of 48... -
Page 35: Sequence Of Operation
The bypass timer should be set to 120 seconds. This is to SEQUENCE OF OPERATION assure there is no nuisance tripping of the low-pressure Cooling – Circuit R-Y makes the thermostat pull in the control during startup in heating mode under cold compressor contactor starting the compressor and weather conditions. -
Page 36: Figure 25 Co
If the thermostat calls for heat when the unit is in the When the humidity is above the setpoint of the dehumidification mode, the electric heaters will humidistat, the compressor circuit and the 3 way valve energize and the evaporator airflow will return to the are energized and the evaporator airflow is reduced. -
Page 37: Figure 26 Dehumidification Mode Circuit
FIGURE 26 DEHUMIDIFICATION MODE CIRCUIT DIAGRAM Manual 2100-521B Page 37 of 48... -
Page 38: Figure 27 Cooling Mode Circuit
FIGURE 27 COOLING MODE CIRCUIT DIAGRAM Manual 2100-521B Page 38 of 48... -
Page 39: 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 40: Figure 28 Defrost Control Board
FIGURE 28 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 2100-521B Page 40 of 48... -
Page 41: Troubleshooting
TROUBLESHOOTING SOLID STATE HEAT PUMP CONTROL 4. Set system switch to “heat” or “cool”. Adjust thermostat to call for heat or cool. The indoor TROUBLESHOOTING PROCEDURE blower, compressor and outdoor fan should start. 1. NOTE: A thorough understanding of the defrost NOTE: If there was no power to 24 volt transformer, cycle sequence is essential. -
Page 42: 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 from heat pump control. outdoor coil. 5. If sensor is out of tolerance, shorted, open, or reads 2. -
Page 43: Troubleshooting Ge Ecm™ Blower Motors
TROUBLESHOOTING GE ECM MOTORS ™ Symptom Cause/Procedure Caution: • 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 44: Figure 29 Control Disassembly
TROUBLESHOOTING GE ECM MOTORS CONT’D. ™ Replacing ECM Control Module 8b. IF REPLACING AN ECM 2.3 CONTROL WITH AN ECM 2.3 CONTROL, the plastic tab and shorter through-bolts are not To replace the control module for the GE variable-speed indoor blower needed. -
Page 45: Figure 32 Fan Blade Setting
5 Indoor airflow during periods of high humidity when system is operating under control of optional humidistat for maximum humidity reduction. 6 Model Q24H1D – when operating on 2nd stage heating the indoor air will increase to 1000 CFM. Manual... -
Page 46: Pressure Charts
TABLE 10 COOLING PRESSURE (All Temperatures in Degrees F) Low side pressure ± 2 psig High side pressure ± 5 psig Tables are based upon rated CFM (airflow) across the evaporator coil. If there is any doubt as to correct operating charge being in the system, the charge should be removed, system evacuated and recharged to serial plate instructions. -
Page 47: Table 11 Heating Pressure
TABLE 11 HEATING PRESSURE (All Temperatures in Degrees F) Manual 2100-521B Page 47 of 48... -
Page 48: Table 12 Dehumidification Relay Logic Board
Manual 2100-521B Page 48 of 48...