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INSTALLATION
INSTRUCTIONS
© Copyright 2004
QTEC SERIES
PACKAGED HEAT PUMP
QH243
QH362
QH482
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
Since 1914 . . . Moving ahead, just as planned.
Models:
QH302
QH422
QH602
Manual:
Supersedes:
File:
Date:
2100-420H
2100-420G
Vol II Tab 14
06-28-07
Manual 2100-420H
Page
1 of 34
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Table of Contents
Troubleshooting
Related Manuals for Bard QTEC QH243
Summary of Contents for Bard QTEC QH243
- Page 1 PACKAGED HEAT PUMP INSTALLATION Models: INSTRUCTIONS QH243 QH302 QH362 QH422 QH482 QH602 Bard Manufacturing Company, Inc. Manual: 2100-420H Bryan, Ohio 43506 Supersedes: 2100-420G File: Vol II Tab 14 Since 1914 . . . Moving ahead, just as planned. Date: 06-28-07 Manual 2100-420H ©...
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Page 2: Table Of Contents
CONTENTS Getting Other Information and Publications tart Up For more information, contact these publishers: ..3 Description of Standard Equipment ....... 21 Optional CFM (QH362, QH422, QH482 & QH602 Only) ..21 General Information Important Installer Note ..........21 Model Nomenclature .......... 4 Phase Monitor .............. -
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 at THESE 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 2 – A MODEL NUMBER | FILTER OPTIONS COIL OPTIONS QH - QT Model 0Z - 0KW X - 1-Inch Fiberglass X - Standard 05 - 5KW (Standard) F - 2-Inch Fiberglass 06 - 6KW CAPACITY | 09 - 9KW P - 2-Inch Pleated... -
Page 5: Table 2 Electrical Specifications
TABLE 2 ELECTRICAL SPECIFICATIONS & 1 Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors. 2 Based on 75°C copper wire. All wiring must conform to the National Electrical Code and all local codes. 3 These “Minimum Circuit Ampacity”... -
Page 6: Table 2A Electrical Specifications
TABLE 2A ELECTRICAL SPECIFICATIONS (Continued) & 1 Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors. 2 Based on 75°C copper wire. All wiring must conform to the National Electrical Code and all local codes. 3 These “Minimum Circuit Ampacity”... -
Page 7: Figure 1 Unit Dimensions
Manual 2100-420H Page 7 of 34... -
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
The blade of the appliance cart should be slid under the HANDLING UNIT AFTER REMOVAL 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 2100-420H Page 10 of 34... -
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
FRESH AIR INTAKE CONDENSATE DRAIN This unit is equipped with a fresh air damper assembly. There are two drain connections on the unit. The rear The damper blade is locked in the closed position when drain is the primary drain, and is located on the right the unit is shipped from the Factory. -
Page 13: Service Light
FIGURE 11 SERVICE LIGHT REAR DRAIN (TOP VIEW) The unit is equipped with a service light which signals the user that service is required. The light DRAIN LINE is located in the upper control panel and is visible only when the hinged service/filter access door is open. -
Page 14: 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 15: Wiring - Main Power
The subbase of the thermostat is factory wired to the UNIT TERMINAL front panel of the unit. See Figure 17 for wiring MOUNTED BLOCK THERMOSTAT diagram. Compatible for use with Bard CS2000A1 LOCATION Controller and Energy Recovery Ventilator. INDOOR BLOWER The Climate Control Option D is an electronic, DEHUMIDIFICATION programmable thermostat. -
Page 16: Low Voltage Connections
LOW VOLTAGE CONNECTIONS NOTE: For total and proper control using DDC, a total of 6 controlled outputs are required (5 if no These units use a grounded 24 volt AC low voltage ventilation system is installed). For proper circuit. system operation under Emergency Heat conditions. -
Page 17: Figure 15 Thermostat Plug Terminals
TABLE 4 WALL THERMOSTATS ; l o ; l o FIGURE 15 MIS-1285 Manual 2100-420H Page 17 of 34... -
Page 18: Figure 16 Thermostat Wiring Diagram "X" Option
FIGURE 16 REMOTE THERMOSTAT WIRING DIAGRAM “X” THERMOSTAT OPTION VENTILATOR OR DAMPER NOTE: On option X or A the CS2000A1 (or other field provided means to control ventilation) must be used if any of the motorized ventilation options are installed. Manual 2100-420H Page 18 of 34... -
Page 19: Figure 17 Thermostat Wiring Diagram "A" Option
FIGURE 17 UNIT MOUNTED THERMOSTAT WIRING DIAGRAM “A” THERMOSTAT OPTION NOTE: On option X or A the CS2000A1 (or other field provided means to control ventilation) must be used if any of the motorized ventilation options are installed. Manual 2100-420H Page 19 of 34... -
Page 20: Figure 18 Thermostat Wiring Diagram "D" Option
FIGURE 18 UNIT MOUNTED THERMOSTAT WIRING DIAGRAM “D” THERMOSTAT OPTION Manual 2100-420H Page 20 of 34... -
Page 21: Start Up
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 22: 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 23: Vent Options
VENT OPTIONS R ENERGY RECOVERY VENTILATOR (Option) BAROMETRIC FRESH AIR DAMPER Before starting, make sure that the power has been (Standard) turned off. The return air grille panel must be removed. Before starting, make sure the power has been turned The energy recovery ventilator (QERV) can be seen off. -
Page 24: Figure 19 Fresh Air Damper Removal
FIGURE 19 FRESH AIR DAMPER REMOVAL MOUNTING SCREW Manual 2100-420H Page 24 of 34... -
Page 25: Figure 20 Qerv Removal
FIGURE 20 QERV REMOVAL POWER CONNECTORS MOUNTING SCREWS LOWER BLOWER ASSEMBLY POWER CONNECTOR FRONT FILL Manual 2100-420H Page 25 of 34... -
Page 26: Figure 21 Heat Pump Control Board
control has a bypass to eliminate nuisance lockout on SEQUENCE OF OPERATION cold start up. Cooling – Circuit R-Y makes the thermostat pull in the The bypass timer should be set to 200 seconds and this compressor contactor starting the compressor and is to assure there is no nuisance tripping of the low- outdoor motor. -
Page 27: Figure 22 Low Pressure Control Bypass Timer
Use a small screwdriver or other metallic object, or DEFROST CYCLE another 1/4 inch QC, to short between the SPEEDUP The defrost cycle is controlled by temperature and time terminals to accelerate the HPC timer and initiate on the solid state heat pump control. defrost. -
Page 28: Troubleshooting
TROUBLESHOOTING TABLE 5 TROUBLESHOOTING & l l i i r i i t a a t l t f I , t u n i l f i ( a t l t i n f i ( n i t , t n . -
Page 29: Solid State Heat Pump Control Troubleshooting Procedure
SOLID STATE HEAT PUMP CONTROL CHECKING TEMPERATURE SENSOR TROUBLESHOOTING PROCEDURE 1. Disconnect temperature sensor from board and from 1. NOTE: A thorough understanding of the defrost outdoor coil. cycle sequence is essential. Review that section 2. Use an ohmmeter and measure the resistance of the earlier in this manual prior to troubleshooting the sensor. -
Page 30: 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 31: Figure 23 Control Disassembly
TROUBLESHOOTING GE ECM ™ MOTORS CONT’D. 8b. IF REPLACING AN ECM 2.3 CONTROL WITH AN ECM Replacing ECM Control Module 2.3 CONTROL, the plastic tab and shorter through-bolts are not needed. To replace the control module for the GE variable-speed indoor blower The control can be oriented in two positions 180°... -
Page 32: Figure 26 Fan Blade Setting
FAN BLADE SETTING DIMENSIONS REFRIGERANT CHARGE Any service work requiring removal or adjustment in The correct system R-22 charge is shown on the unit the fan and/or motor area will require that the rating plate. Optimum unit cooling performance will dimensions in Table 7 be checked and blade adjusted in occur with a refrigerant charge resulting in a Super Heat or out of the motor shaft accordingly. -
Page 33: 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 34: Manual 2100-420H
TABLE 11 HEATING PRESSURE (ALL TEMPERATURES IN DEGREES F) Refer to notes following Table 10 Manual 2100-420H Page 34 of 34...