Table of Contents
Advertisement
Quick Links
INSTALLATION
INSTRUCTIONS
QTEC SERIES
PACKAGED HEAT PUMP
QH242D
QH362D
QH482D
Bard Manufacturing Company
Bryan, Ohio 43506
Since 1914 . . . Moving ahead, just as planned.
Models:
QH302D
QH422D
QH602D
MIS-1554
Manual:
Supersedes: 2100-380B
File:
Date:
2100-380C
Vol II Tab 14
10-11-01
© Copyright 2001
Advertisement
Table of Contents
Troubleshooting
Related Manuals for Bard QTEC QH602D Series
Summary of Contents for Bard QTEC QH602D Series
- Page 1 INSTALLATION Models: INSTRUCTIONS QH242D QH302D QH362D QH422D QH482D QH602D MIS-1554 Manual: 2100-380C Bard Manufacturing Company Supersedes: 2100-380B Bryan, Ohio 43506 File: Vol II Tab 14 Since 1914 . . . Moving ahead, just as planned. Date: 10-11-01 © Copyright 2001...
-
Page 2: Table Of Contents
CONTENTS Start Up Getting Other Information and Publications Description of Standard Equipment ......21 For more information, contact these publishers: ..1 Optional CFM ............21 Important Installer Note ..........21 General Information Phase Monitor ............21 Model Nomenclature ........2 Three Phase Scroll Compressor Start Up Shipping Damage ............ -
Page 3: Getting Other Information And Publications
GETTING OTHER INFORMATION AND PUBLICATIONS FOR MORE INFORMATION, CONTACT These publications can help you install the air 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 D A MODEL NUMBER | FILTER OPTIONS COIL OPTIONS QH - QT Model 0Z - 0KW X - 1 Inch Fiberglass X - Standard 05 - 5KW (Standard) 06 - 6KW F - 2 Inch Fiberglass CAPACITY | P - 2 Inch Pleated 24 - 2 Ton... -
Page 5: Table 2 Electrical Specifications
TABLE 2 ELECTRICAL SPECIFICATIONS & Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors. Based on 75° C copper wire. All wiring must conform to the National Electrical Code and all local codes. These “Minimum Circuit Ampacity”... - Page 6 TABLE 2A ELECTRICAL SPECIFICATIONS (continued from Page 3) & – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –...
-
Page 7: Figure 1 Unit Dimensions
FIGURE 1 UNIT DIMENSIONS MIS-1636... -
Page 8: 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 9: Handling Unit After Removal From Skid
HANDLING UNIT AFTER REMOVAL The wheels of the unit must be locked. If the wheels were allowed to roll, the unit could roll off the cart. FROM SKID The unit should always be carted from the left side. This is the side where the compressor is located. See WARNING Figure 4. -
Page 10: Figure 5 Installation With Free Blow Plenum
FIGURE 5 INSTALLATION WITH FREE BLOW PLENUM CEILING 8 FT. - 6 IN. MINIMUM RECOMMENDED 8 FT. - 5 IN. CEILING HEIGHT MIS-1574 FLOOR FIGURE 6 DUCTED APPLICATION SUSPENDED CEILING DUCT FIXED CEILING 20 IN. MINIMUM DUCT FLANGE 12 IN. MINIMUM 2 IN. -
Page 11: Duct Work
DUCT WORK The QPB and QPBHW Plenum Box mounts on top of the unit and has both vertically and horizontally Any heat pump is more critical of proper operating adjustable louvers on the front discharge grille. charge and an adequate duct system than a straight air When used with a ducted supply, a QCX Cabinet conditioning unit. -
Page 12: Fresh Air Intake
CONDENSATE DRAIN FRESH AIR INTAKE There are two drain connections on the unit. The rear This unit is equipped with a fresh air damper assembly. drain is the primary drain, and is located on the right The damper blade is locked in the closed position when lower rear panel of the unit. -
Page 13: Service Light
SERVICE LIGHT FIGURE 11 REAR DRAIN (TOP VIEW) The unit is equipped with a service light which DRAIN LINE signals the user that service is required. The light 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 alignment to the mounting brackets. This unit MOUNTING THE 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
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 sizing information and maximum fuse or “HACR See Start Up section for information on three phase Type”... -
Page 16: Low Voltage Connections
NOTE: For total and proper control using DDC, a LOW VOLTAGE CONNECTIONS total of 7 controlled outputs are required (6 if These units use a grounded 24 volt AC low voltage no ventilation system is installed). For proper circuit. system operation under Emergency Heat conditions where the compressor needs to be The “R”... -
Page 17: Figure 15 Thermostat Plug Terminals
TABLE 4 WALL THERMOSTATS AND SUBBASE COMBINATIONS c i t t i s t s i FIGURE 15 THERMOSTAT PLUG TERMINALS BLOWER MOTOR P2 AND P4 LOW VOLTAGE PLUG (VIEWED FROM PIN END) (VIEWED FROM PIN END) MIS-1285 Manual 2100-380 Page... - Page 18 FIGURE 16 THERMOSTAT WIRING DIAGRAM “X” THERMOSTAT OPTION DEHUMIDIFICATION MODULE 4102-023 NOTE: See next page for additional details on LVTB connection identification.
-
Page 19: Figure 16 Thermostat Wiring Diagram "X" Option 16 Figure 16-1 Details On Lvtb Connections
FIGURE 16-1 DETAILS OF LVTB CONNECTION 24VAC HOT DEHUM CIRCUIT 24VAC COM DEHUM CIRCUIT NOTE: FIELD SUPPLIED DEHUMIDISTAT MUST BE DRY CONTACT CONNECTED TO TERMINALS 5 AND 4 ON LVTB COMPRESSOR SYSTEM CHECK LIGHT REVERSING VALVE 2ND STAGE HEAT EMERGENCY HEAT 24VAC COM BLOWER VENTILATOR OR DAMPER... - Page 20 Manual 2100-380 Page...
- Page 21 FIGURE 16B REMOTE THERMOSTAT WIRING DIAGRAM “F” THERMOSTAT OPTION DEHUMIDIFICATION MODULE 4102-024...
-
Page 22: Figure 16C Thermostat Wiring Diagram "G" Option
FIGURE 16C UNIT MOUNTED THERMOSTAT AND HUMIDISTAT WIRING DIAGRAM “G” THERMOSTAT OPTION REMOVE Y TO Y1 JUMPER WHEN DEHUMIDIFICATION MODULE CS2000 ENERGY MONITOR IS USED. SEE CS2000 MANUAL 2100-221 FOR WIRING 4102-027... -
Page 23: Start Up
START UP PHASE MONITOR DESCRIPTION OF STANDARD 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 10 The phase monitor in this unit is equipped with two minute defrost override are standard on the electronic... -
Page 24: 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 mounted to the base. For ease of pulling unit air registers. -
Page 25: Vent Options
R ENERGY RECOVERY VENTILATOR VENT OPTIONS (Option) BAROMETRIC FRESH AIR DAMPER (Standard) Before starting, make sure that the power has been turned off. The return air grille panel must be removed. Before starting, make sure the power has been turned off. -
Page 26: Figure 17 Fresh Air Damper Removal
FIGURE 17 FRESH AIR DAMPER REMOVAL MOUNTING SCREW MIS-1627 Manual 2100-380 Page... -
Page 27: Figure 18 Qerv Removal
FIGURE 18 QERV REMOVAL POWER CONNECTORS MOUNTING SCREWS LOWER BLOWER ASSEMBLY POWER CONNECTOR FRONT FILL MIS-1039 Manual 2100-380 Page... -
Page 28: Sequence Of Operation
SEQUENCE OF OPERATION mode the compressor will be stopped. This will activate the red light located in the control panel. The Cooling – Circuit R-Y makes the thermostat pull in the lockout circuit will hold compressor off line. When the compressor contactor starting the compressor and system problem is corrected, the unit operation can be outdoor motor. -
Page 29: Refrigerant Tube Schematic For Reheat Coil
When the humidity is above the setpoint of the When the humidity is above the setpoint of the humidistat, the compressor circuit and the 3 way valve humidistat, the compressor circuit and the 3 way valve are energized and the evaporator air flow is reduced. are energized and the evaporator air flow is reduced. -
Page 30: Figure 19 Dehumidification Mode Circuit
FIGURE 19 DEHUMIDIFICATION MODE CIRCUIT DIAGRAM MIS-1088 Manual 2100-380 Page... -
Page 31: Figure 20 Cooling Mode Circuit
FIGURE 20 COOLING MODE CIRCUIT DIAGRAM MIS-1089 Manual 2100-380 Page... -
Page 32: Figure 21 Heat Pump Control Board
FIGURE 21 There is an initial defrost jumper HEAT PUMP CONTROL BOARD (HPC) (sen jmp) on the control that can be used at any outdoor ambient during the heating cycle to simulate a 0° coil temperature. This can be used to check defrost operation of the unit without waiting for the outdoor ambient to fall into the defrost... -
Page 33: Troubleshooting
TROUBLESHOOTING TABLE 5 TROUBLESHOOTING t i u , t i t i n . l o n i l . l o c t i c t i c t i l l i c t i . l o l l a . -
Page 34: 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 outdoor coil. 1. Turn on AC power supply to indoor and outdoor units. 2. Use an ohmmeter and measure the resistance of the sensor. -
Page 35: Figure 22 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 36: 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 37: Table 11 Heating Pressure
TABLE 11 HEATING PRESSURE (All Temperatures in Degrees F) Manual 2100-380 Page...