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INSTALLATION
INSTRUCTIONS
© Copyright 2004
QTEC SERIES
PACKAGED
AIR CONDITIONER
QA241
QA361
QA481
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
Since 1914 . . . Moving ahead, just as planned.
Models:
QA301
QA421
QA601
Manual:
Supersedes:
File:
Date:
2100-437E
2100-437D
Vol II Tab 14
10-10-06
Manual 2100-437E
Page
1 of 31
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Summary of Contents for Bard QTEC QA241 Series
- Page 1 INSTRUCTIONS Models: QA241 QA301 QA361 QA421 QA481 QA601 Manual: 2100-437E Bard Manufacturing Company, Inc. Supersedes: 2100-437D Bryan, Ohio 43506 File: Vol II Tab 14 Since 1914 . . . Moving ahead, just as planned. Date: 10-10-06 Manual 2100-437E © Copyright 2004...
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Page 2: Table Of Contents
CONTENTS Getting Other Information and Publications tart Up Description of Standard Equipment ....... 22 For more information, contact these publishers: ..3 Optional CFM (QA361, QA421, QA481 and QA601 Only) ............22 General Information Important Installer Note ..........22 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 – A MODEL NUMBER | FILTER OPTIONS COIL OPTIONS QA - QT Model 0Z - 0KW X - 1 Inch Fiberglass X - Standard 05 - 5KW (Standard) 1 - Coated Evap. Coil F - 2 Inch Fiberglass 06 - 6KW 2 - Coated Cond. -
Page 5: Table 1 Factory Built-In Electric Heat Table
Manual 2100-437E Page 5 of 31... -
Page 6: 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 7: Table 2A Electrical Specifications
TABLE 2A 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 8: Figure 1 Unit Dimensions
Manual 2100-437E Page 8 of 31... -
Page 9: Shipping Damage
FIGURE 2 SHIPPING DAMAGE 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 10: 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 11: Figure 5 Installation With Free Blow Plenum
FIGURE 5 INSTALLATION WITH FREE BLOW PLENUM FIGURE 6 DUCTED APPLICATION Manual 2100-437E Page 11 of 31... -
Page 12: Duct Work
For hot water coil option a QPBHWxx-F for free blow DUCT WORK or QPBHWxx-D for ducted airflow is used All duct work must be properly sized for the design When used with a ducted supply, a QCX Cabinet airflow requirement of the equipment. Air Conditioning Extension can be used to conceal the duct work above Contractors of America (ACCA) is an excellent guide to the unit to the ceiling. -
Page 13: Fresh Air Intake
The side drain requires a water trap for proper drainage. FRESH AIR INTAKE See Figure 9. The drain can be routed through the floor This unit is equipped with a fresh air damper assembly. or through the wall. If the drain is to be routed The damper blade is locked in the closed position when through an unconditioned space, it must be protected the unit is shipped from the Factory. -
Page 14: 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 15: 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 16: Wiring - Main Power
The subbase of the thermostat is factory wired to the TERMINAL front panel of the unit. See Figure 17 for wiring UNIT BLOCK MOUNTED diagram. Compatible for use with Bard CS2000A THERMOSTAT Controller and Energy Recovery Ventilator. INDOOR LOCATION BLOWER The Climate Control Option D is an electronic, programmable thermostat. -
Page 17: Low Voltage Connections
LOW VOLTAGE CONNECTIONS LOW VOLTAGE CONNECTIONS These units use a grounded 24 volt AC low voltage FOR DDC CONTROL circuit. Fan Only Energize G The “R” terminal is the hot terminal and the “C” terminal is grounded. Cooling Mode Energize Y1, G “G”... -
Page 18: Figure 15 Thermostat Plug Terminals
TABLE 4 WALL THERMOSTATS ; l o ; l o FIGURE 15 MIS-1285 Manual 2100-437E Page 18 of 31... -
Page 19: Figure 16 Thermostat Wiring Diagram "X" Option
FIGURE 16 REMOTE THERMOSTAT WIRING DIAGRAM “X” THERMOSTAT OPTION 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. Manual 2100-437E Page 19 of 31... -
Page 20: Figure 17 Thermostat Wiring Diagram "A" Option
FIGURE 17 UNIT MOUNTED THERMOSTAT WIRING DIAGRAM “A” THERMOSTAT OPTION 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. Manual 2100-437E Page 20 of 31... -
Page 21: Figure 18 Thermostat Wiring Diagram "D" Option
FIGURE 18 UNIT MOUNTED THERMOSTAT WIRING DIAGRAM “D” THERMOSTAT OPTION Manual 2100-437E Page 21 of 31... -
Page 22: Start Up
START UP DESCRIPTION OF STANDARD CAUTION EQUIPMENT High Pressure Switch Provides refrigerant circuit high pressure protection. Do not plug in or unplug blower motor Includes lockout circuit that is resettable from room connectors while the power is on. thermostat. Failure to do so may result in motor failure. Compressor Control Module Provides short cycle protection for the compressor which extends compressor life. -
Page 23: Service Hints
All three phase scroll compressors used in the QT Alarm Relay Output series are wired identically internally. As a result, once Alarm terminal is output connection for applications the correct phasing is determined for a specific system where alarm relay is employed. This terminal is or installation, connecting properly phased power leads powered whenever compressor is locked out due to HPC to the same Fusite terminal should maintain proper... -
Page 24: Mist Eliminator Service
6. Some service requires the need to remove the unit It is recommended that the mist eliminator be inspected from the wall including replacement of the indoor annually and serviced as required. The mist eliminator coil and/or the outdoor coil. Also servicing the can be inspected from the outside of the building by outdoor fan motor or fan blade will require looking through the outdoor grille. - Page 25 The mist eliminator can be seen through the opening in 3. Underneath the heat recovery cassette there is a the back of the unit. The mist eliminator must be raised power connector for the lower blower assembly. To up and the bottom can be pulled toward the front of the disconnect this plug, the tabs on both sides of the unit and removed.
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Page 26: Figure 19 Fresh Air Damper Removal
FIGURE 19 FRESH AIR DAMPER REMOVAL MOUNTING SCREW Manual 2100-437E Page 26 of 31... -
Page 27: Figure 20 Qerv Removal
FIGURE 20 QERV REMOVAL POWER CONNECTORS MOUNTING SCREWS LOWER BLOWER ASSEMBLY POWER CONNECTOR FRONT FILL Manual 2100-437E Page 27 of 31... -
Page 28: Sequence Of Operation
OPTIONAL CLIMATE CONTROLS SEQUENCE OF OPERATION SEQUENCE OF OPERATION Cooling – Circuit R-Y makes the thermostat pull in the compressor contactor starting the compressor and The Climate Control Option A is an electronic, non- outdoor motor. The G (indoor motor) circuit is programmable manual or auto changeover thermostat. -
Page 29: Troubleshooting
TROUBLESHOOTING TABLE 5 TROUBLESHOOTING t i u , t i s t i a t l n i l . l o c t i c t i c t i c t i a t l . l o i t c l i o i t c... -
Page 30: Figure 21 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. If correct charge is in doubt, recover the dimensions in Table 6 be checked and blade adjusted in refrigerant and recharge per the charge on the unit rating or out of the motor shaft accordingly. -
Page 31: Pressure Chart
TABLE 8 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 instruction Manual 2100-437E...
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