INSTALLATION INSTRUCTIONS Q-TEC SERIES PACKAGED AIR CONDITIONER Models: Q24A1 Q30A1 Q36A1 Q42A1 Q48A1 Q60A1 Bard Manufacturing Company, Inc. Bryan, Ohio 43506 Since 1914 . . . Moving ahead, just as planned.
CONTENTS Getting Other Information and Publications For more information, contact these publishers: .......... 3 Q-TEC General Information Q-TEC Model Nomenclature ......................................... 4 Shipping Damage ......................................................... 8 Unit Removal From Skid .............................................. 8 Handling Unit After Removal From Skid ....................... 9 General .........................................................................
GETTING OTHER INFORMATION AND PUBLICATIONS These publications can help you install the air conditioner or heat pump. You can usually find these at your local library or purchase them directly from the publisher. Be sure to consult current edition of each standard.
Q-TEC Series General Information Q-TEC MODEL NOMENCLATURE Q 42 MODEL NUMBER Q-Tec™ CAPACITY 24 - 2 Ton 30 - 2½ Ton 36 - 3 Ton 42 - 3½ Ton 48 - 4 Ton 60 - 5 Ton A 1 AIR CONDITIONER REVISION | SPECIALTY PRODUCTS 1 | (Non-Standard) A 10 KW 0Z - 0KW 05 - 5KW 06 - 6KW 09 - 9KW 10 -10KW 12 -12KW 15 -15KW VOLTS & PHASE | A - 230/208/60/1 B - 230/208/60/3 C - 460/60/3 VENTILATION OPTIONS X B E PV R- Barometric Fresh Air Damper (Standard) Blank-off Plate Economizer (Not available on dehumidification versi
Manual Page 2100-522B 5 of 38 Q24A1-B Q30A1-B 15.0 12.0 10.0 41,000 30,700 30,700 23,000 30,700 23,000 15,360 B TU H 9.0 32,670 24,570 B TU H 15,360 20,500 B TU H 20,500 B TU H 6.0 16,380 12,290 5.
TABLE 2 ELECTRICAL SPECIFICATIONS Single Circuit Model Q24A1-A0Z A 05 A 10 Q24A1-B0Z B 06 B 09 Q24A1-C0Z C 06 C 09 Q30A1-A0Z A 05 A 10 Q30A1-B0Z B 06 B 09 B 12 Q30A1-C0Z C 06 C 09 C 12 Q36A1-A0Z A 05 A 10 A 15 Q36A1-B0Z B 06 B 09 B 15 Q36A1-C0Z C 06 C 09 C 15 Q42A1-A0Z A 05 A 10 A 15 Q42A1-B0Z B 06 B 09 B 15 Q42A1-C0Z C 06 C 09 C 15 Q48A1-A0Z A 05 A 10 A 15 Q48A1-B0Z B 06 B 09 B 15 Q48A1-C0Z C 06 C 09 C 15 Q60A1-A0Z A 10 A 15 Q60A1-B0Z B 09 B 15 Q60A1-C0Z C 09 C 15 3 Minimum Circuit Ampacity Ckt. A Ckt.
FIGURE 1 UNIT DIMENSIONS Manual Page 2100-522B 7 of 38
SHIPPING DAMAGE 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. FIGURE 2 AIR SEAL UNDER QTEC UNIT UNIT REMOVAL FROM SKID WARNING This unit is heavy and requires more than one person to handle and remove from the skid.
HANDLING UNIT AFTER REMOVAL FROM SKID WARNING Exercise extreme caution when pushing the unit on the rollers. Handle and push from the lower 1/3 of the unit. Insure that debris is not on the floor where the unit is to be moved on the rollers. Failure to do so could result in the unit tipping over and causing bodily injury and/ or damage to the unit. The unit will have to be turned sideways and removed from the skid to fit through a 36" doorway.
FIGURE 5 INSTALLATION WITH FREE BLOW PLENUM FIGURE 6 DUCTED APPLICATION Manual 2100-522B Page 10 of 38
DUCT WORK All duct work must be properly sized for the design airflow requirement of the equipment. Air Conditioning Contractors of America (ACCA) is an excellent guide to proper sizing. All duct work or portions thereof not in the conditioned space should be properly insulated in order to both conserve energy and prevent condensation or moisture damage. When duct runs through unheated spaces, it should be insulated with a minimum of one inch of insulation.
FRESH AIR INTAKE This unit is equipped with a fresh air damper assembly. The damper blade is locked in the closed position when the unit is shipped from the factory. To allow the damper to operate remove the two plastic locking pins, one on each end of the blade. This will allow for maximum fresh airflow. The damper blade will now open when the indoor blower is operating. If less than maximum fresh airflow is required, reinsert the plastic pins to limit damper blade opening to desired level.
FIGURE 9 OPTIONAL SIDE DRAIN (SIDE VIEW) INSTALLATION Q-TEC UNIT FIGURE 10 STANDARD REAR DRAIN 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.
Manual 2100-522B Page 14 of 38 DRAIN BOX CAULK AROUND TUBE OVERFLOW TUBE WALL SLEEVE FIGURE 12A MIS-2469
FIGURE 12B PLUG INSTALLED IN SIDE Q/Tec DRAIN REAR DRAIN CONNECTION IN Q/Tec PRODUCT 3/4" PLASTIC PIPE NIPPLE SUPPLIED WITH DRAIN BOX KIT (APPLY TEFLON TAPE TO THREADS) IMPORTANT ! 1/2" SLIP X 1/2" SLIP X 3/4" NPT TEE SUPPLIED WITH DRAIN BOX KIT (TIGHTEN THREADS SO TEE IS HORIZONTAL TO FLOOR) MIS-2470 Manual Page 2100-522B 15 of 38
FIGURE 12C REMOVE KNOCK-OUT FOR INDOOR DRAIN HOSE CONNECTOR (If Used) MIS-2471 Manual 2100-522B Page 16 of 38
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.
FIGURE 13A UNIT MOUNTING SIDE TRIM (2 PCS.) ENLARGED VIEW OF MOUNTING BRACKET SHOWING SLEEVE TO CABINET ATTACHMENT SIDE TRIM (2 PCS.
INSTALLATION INSTRUCTIONS MOUNTING THE UNIT When installing a Q-TEC unit near an interior wall on the left side, a minimum of 8 inches is required; 12 inches is preferred. When installing a Q-TEC unit near an interior wall on the right side, a minimum of 18 inches is required as additional space is required to connect the side drain. If the rear condensate drain kit QCDS48 is used the minimum can be reduced to 8 inches.
WIRING – MAIN POWER Refer to the unit rating plate and/or Table 2 for wire sizing information and maximum fuse or “HACR Type” circuit breaker size. Each unit is marked with a “Minimum Circuit Ampacity”. This means that the field wiring used must be sized to carry that amount of current. Depending on the installed KW of electric heat, there may be two field power circuits required. If this is the case, the unit serial plate will so indicate. All models are suitable only for connection with copper wire.
LOW VOLTAGE CONNECTIONS These units use a grounded 24 volt AC low voltage circuit. The “R” terminal is the hot terminal and the “C” terminal is grounded. “G” terminal or pin 6 of P2 is the fan input. If the climate control option is abandoned and connections are made directly to P2 pin 6 of P2 must be energized for proper operation. “Y1” terminal or pin 7 of P2 is the compressor input. “W1” terminal or pin 8 of P2 is the fist stage heat.
TABLE 4 WALL THERMOSTATS Thermostat Predominant Features 8403-060 (1120-445) 3 stage Cool; 3 stage Heat Programmable/Non-Programmable Electronic HP or Conventional Auto or Manual changeover 2 stage Cool; 2 stage Heat 8403-058 Electronic Non-Programmable (TH5220D1151) HP or Conventional Auto or Manual changeover 8403-056 Carbon Dioxide Sensor with LCD for (C7232A1008) Sensor Readings FIGURE 16 MIS-1285 Manual 2100-522B Page 22 of 38
FIGURE 17 REMOTE THERMOSTAT WIRING DIAGRAM “X” THERMOSTAT OPTION 8403-060 8403-058 TH5220D1151 LOW VOLTAGE TERMINAL BLOCK G G G ORANGE PLUG 2 1 2 Y2 Y2 Y2 PURPLE 3 4 A F Y1 Y1 Y BROWN/WHITE YELLOW 5 6 E W1/E W W1 BLUE 7 W2 W2 W2 BROWN 8 R R R RED/WHITE C C C BLACK/WHITE Rc 1 2 1 10 RED 11 BLUE 12 2 3 9 "X" THERMOSTAT OPTIONS (FIELD WIRED) 1 REMOVE JUMPER FOR 2 STAGE ELECTRIC HEAT OPERATION ON 15KW MODELS 2 FACTORY INSTALLED JUMPER MIS-2693 NOTE: On opti
FIGURE 18 UNIT MOUNTED THERMOSTAT WIRING DIAGRAM “A” THERMOSTAT OPTION 8403-060 Plug #2 G Orange Y2 Purple 1 2 3 4 Brown/White 5 6 W2 Yellow Blue Brown R Red/White C L Black/White Pink Y1 W1/E 7 8 9 10 11 12 "A" THERMOSTAT OPTION 4102-069 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.
FIGURE 19 UNIT MOUNTED THERMOSTAT WIRING DIAGRAM “D” THERMOSTAT OPTION 8403-060 Plug #2 G Orange Y2 Purple A Brown/White Y1 W2 Yellow Blue Brown R Red/White C Black/White W1/E 1 2 3 4 5 6 7 8 9 10 11 12 "D" THERMOSTAT OPTION 4102-070 Manual Page 2100-522B 25 of 38
FIGURE 20 UNIT MOUNTED THERMOSTAT WIRING DIAGRAM “H” THERMOSTAT OPTION WITH CO2 Red/White Red 1 Yellow Brown Black/White Orange Green 3 5 2 4 Relay Part #8201-062 Plug #2 Orange Analog Out Black/White Black Brown/White 24VAC Red/White CO2 Controller Part #8403-056 1 Purple Y2 2 3 4 A G Temp.
START UP THESE UNITS REQUIRE R-410A REFRIGERANT AND POLYOL ESTER OIL. REMEMBER: When adding R-410A refrigerant, it must come out of the charging cylinder/tank as a liquid to avoid any fractionation, and to insure optimal system performance. Refer to instructions for the cylinder that is being utilized for proper method of liquid extraction. GENERAL: 1. Use separate service equipment to avoid cross contamination of oil and refrigerants. 2. Use recovery equipment rated for R-410A refrigerant. 3.
START UP DESCRIPTION OF STANDARD EQUIPMENT High Pressure Switch Provides refrigerant circuit high pressure protection. Includes lockout circuit that is resettable from room thermostat. Compressor Control Module Provides short cycle protection for the compressor which extends compressor life, as well as high and low pressure switch monitoring and alarm functions. Service Lights One service light indicates when service is required.
All three phase scroll compressors used in the Q-TEC series are wired identically internally. As a result, once the correct phasing is determined for a specific system or installation, connecting properly phased power leads to the same Fusite terminal should maintain proper rotation direction. The direction of rotation of the motor may be changed by reversing any two line connections to the unit.
6. Some service requires the need to remove the unit from the wall including replacement of the indoor coil and/or the outdoor coil. Also servicing the outdoor fan motor or fan blade will require removing the unit from the wall if the unit is installed at a height that is not easily accessible from the outside of the building. In order to remove the unit from the wall the following procedure must be used: a. Turn off power to the unit at the remote location. Some units may have more than one power supply.
The mist eliminator can be seen through the opening in the back of the unit. The mist eliminator must be raised up and the bottom can be pulled toward the front of the unit and removed. 3. Underneath the heat recovery cassette there is a power connector for the lower blower assembly. To disconnect this plug, the tabs on both sides of the plug must be squeezed to release the plug. While squeezing the tabs, pull the plug out of the socket. Q-TEC ENERGY RECOVERY VENTILATOR (Option) 4.
FIGURE 21 FRESH AIR DAMPER REMOVAL MOUNTING SCREW Manual 2100-522B Page 32 of 38
FIGURE 22 QERV REMOVAL POWER CONNECTORS MOUNTING SCREWS LOWER BLOWER ASSEMBLY POWER CONNECTOR FRONT FILL Manual Page 2100-522B 33 of 38
SEQUENCE OF OPERATION Cooling – Circuit R-Y makes the thermostat pull in the compressor contactor starting the compressor and outdoor motor. The G (indoor motor) circuit is automatically completed on any call for cooling operation, or can be energized by manual fan switch on subbase for constant air circulation. Heating – Circuit is completed for R-W1 on each heating “on” cycle, energizing the electric heat contactor. R-G also makes starting indoor blower motor.
TROUBLESHOOTING GE ECM™ MOTORS CAUTION: Disconnect power from unit before removing or replacing connectors, or servicing motor. To avoid electric shock from the motor’s capacitors, disconnect power and wait at least 5 minutes before opening motor. Symptom Cause/Procedure • Noisy blower or cabinet • Check for loose blower housing, panels, etc.
TROUBLESHOOTING GE ECM™ MOTORS CONT’D. Replacing ECM Control Module To replace the control module for the GE variable-speed indoor blower motor you need to take the following steps: 1. You MUST have the correct replacement module. The controls are factory programmed for specific operating modes. Even though they look alike, different modules may have completely different functionality. USING THE WRONG CONTROL MODULE VOIDS ALL PRODUCT WARRANTIES AND MAY PRODUCE UNEXPECTED RESULTS. 2.
FAN BLADE SETTING DIMENSIONS R-410A Any service work requiring removal or adjustment in the fan and/or motor area will require that the dimensions in Table 5 be checked and blade adjusted in or out of the motor shaft accordingly. REFRIGERANT CHARGE This unit was charged at the factory with the quantity of refrigerant listed on the serial plate. AHRI capacity and efficiency ratings were determined by testing with this refrigerant charge quantity.
TABLE 7 COOLING PRESSURE (ALL TEMPERATURES IN DEGREES F) R E TU R N AIR MODEL TEMP.
