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Summary of Contents for Bard Q-TEC Q A4D Series
- Page 1 Literature Assembly 911-0838 Contains the following: 2100-034 (G) User Guide 2100-479 Leak Test Evacuation Charging 2100-752(C) Q24-42A4 Installation Instructions 2110-1568 (G) Replacement Parts Manual 7960-923 Dehum Supplemental Manual QA 7960-420 Warranty...
- Page 3 USER’S APPLICATION GUIDE AND TECHNICAL PRODUCT OVERVIEW Manual: 2100-034G Supersedes: 2100-034F Date: 12-17-20 Bard Manufacturing Company, Inc. Bryan, Ohio 43506 www.bardhvac.com BARDHVAC.COM Climate Control Solutions...
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Page 4: Table Of Contents
General Information The User's Application Guide covers a wide range of heating and cooling products manufactured by Bard Manufacturing Company. It is intended to be a general guide for care and operation of typical systems and covers the most important features you should be aware of and are responsible for as the user of the equipment. -
Page 5: Overview
Heat Pumps and Heat Pumps and Heat Pumps The User's Application Guide and Technical Product Overview covers the following topics: • Documentation provided by Bard for proper use of your new product. • Unit installation guidelines. • Routine unit maintenance. -
Page 6: Documentation
Unit Literature Assembly – Documentation Provided with Your Unit Bard products are shipped with documentation that when used by a technician with cooling and heating knowledge, can ensure that your product is installed safely, performs optimally and achieves the longest life cycle possible. -
Page 7: Unit Installation
Unit Installation Installation plays a key part in unit functionality, performance and safety. Product securing and placement, duct design and supply/return location, electrical routing and condensate and defrost drainage all play key roles in making sure a unit will perform per the design specifications. WALL MOUNT Products –... -
Page 8: Wall Mount Products - Clearances For Outdoor Condenser Fan Airflow
WALL MOUNT Products – Clearances for Indoor Supply and Return Airflow The Bard unit should be placed in an area where the supply (leaving conditioned air) and return (unit air intake) air paths will be unrestricted. Avoid placing objects in the structure within 24" of the return (unit air intake) grille. -
Page 9: Wall Mount Products - Condensate And Defrost Drainage
Condensate Water Drainage: needs to be planned before installation. Your Unit condensate water exits the base new Bard WALL MOUNT product includes of the unit during cooling operation. provisions to allow condensate water to exit the bottom of the unit. If condensate water is to be... -
Page 10: I-Tec And Q-Tec Products - Installing The Product Inside A Room
It is recommended to allow 15' (457.2 cm) in front of unit louver for proper condenser airflow. Always use common sense when installing products, follow unit clearances given in the installation instructions and contact local Bard distributors when additional knowledge is needed regarding unit clearances for proper unit functionality. -
Page 11: I-Tec And Q-Tec Products - Clearances For Indoor Supply And Return Airflow
I-TEC and Q-TEC Products – Clearances for Indoor Supply and Return Airflow The Bard unit should be placed in an area where the supply (leaving conditioned air) and return (unit air intake) air paths will be unrestricted. Avoid placing objects inside the room within 24" of the return (unit air intake) louvers or grille. -
Page 12: I-Tec And Q-Tec Products - Condensate Drainage
This is collected in an evaporator pan and needs to be drained to an external drainage system. Your new Bard product includes provisions to allow condensate water to exit the unit and fittings will need to be field supplied to connect the unit drain to the building. -
Page 13: All Products - Power Supply Verification
Failure to do so may result in death, injury or product damage. A proper power supply to your new Bard unit is very important. Be sure to verify the following with a multi-meter or other power measuring device before applying power to your Bard product. -
Page 14: Unit Maintenance
Outdoor Unit Wall Mount Room Air Filters Wall mount filters are normally accessed from the outside of the building. Bard does offer a return air grille with a filter frame built-in for indoor filter access. The return air filter grille is not acceptable as the only source of filtration if vent options are installed in the wall mount unit. -
Page 15: Wall Mount Products - Filters And Filter Servicing
WALL MOUNT Products – Filters and Filter Servicing The built-in filter tray and room air filters in the wall mount are located in the middle of the cabinet below the indoor blowers. Units with vent options will have a washable screen behind the vent intake panel. Filter Door: The unit room air filter is located behind Vent Intake... -
Page 16: I-Tec Indoor Products - Filters And Filter Servicing
The washable filters are used to remove dirt and dust from outdoor air that is entering the vent area. If at any time these filters are damaged, they must be replaced with Bard-approved filters. I-TEC Filter Locations:... -
Page 17: Q-Tec Indoor Products - Filters And Filter Servicing
Q-TEC Indoor Products – Filters and Filter Servicing The Q-TEC indoor air conditioners and heat pumps have two room air filters that must be replaced when servicing the unit. Filters play an important part in proper unit operation and prevent dirt and dust buildup inside the Q-TEC and the room the unit is installed in. -
Page 18: All Products - Coil Cleaning
Coils should be ordered with a corrosion protective coating. Contact Bard for coating options. 3. Frequent cleaning and waxing of the cabinet using a good automobile polish will help extend its original appearance and protect painted surfaces. -
Page 19: All Products - Condenser Airflow
All Products – Condenser Airflow W**A, W**H, T**H, T**S, W*RV Wall Mount Units: These units are called “blow through condenser airflow” units because they draw cool outdoor air from the sides and blow the warm condenser air exiting the coil through the front grille. C**H Wall Mount Units: These units are called “draw through condenser airflow”... -
Page 20: Unit Operation
Unit Operation Air-to-Air Cooling Products (Air Conditioners) The cooling mode operates similar to a refrigerator, removing heat from inside the conditioned space and rejecting it outside of the space being controlled. There are three main parts of the system: 1. The evaporator (indoor) coil where cold refrigerant absorbs heat from the air, which circulates from the conditioned space through the machine and is returned to the space at a lower temperature and with some of the humidity (moisture) removed. -
Page 21: Water-To-Air Cooling And Heating Products (Geothermal Heat Pumps)
terminates, the reversing valve will shift back to heating mode and the outdoor fan will restart. There is typically a large puff of steam emitted as the fan restarts. When the heat pump shifts from cool to heating mode, from heating to cooling mode and especially during defrost cycles, there will be a pressure transfer sound heard as the reversing valve redirects the flow of refrigerant. -
Page 22: Dehumidification And Ventilation Operation
Ventilation Options (Air-to-Air or Water-to-Air Systems) All Bard systems are available with factory-installed vent options. Most units can have ventilation field installed after unit installation. -
Page 23: Troubleshooting
Helpful Hints and Good Operating Practices The following information will help you enjoy the full comfort and benefits of your Bard cooling and heating system, maximize the performance and efficiency and help extend the life of your system. - Page 25 INSTALLATION INSTRUCTIONS 11EER Q-TEC Q**A4D Series Packaged Air Conditioner Models: Q36A4DA Q42A4DA Q48A4DA Q36A4DB Q42A4DB Q48A4DB Q36A4DC Q42A4DC Q48A4DC Bard Manufacturing Company, Inc. Manual: 2100-752C Bryan, Ohio 43506 Supersedes: 2100-752B Date: 8-13-21 www.bardhvac.com Page 1 of 41...
- Page 26 CONTENTS Getting Other Information and Publications ..4 Low Pressure Switch ......28 Freeze Stat Switch .........28 Q-TEC General Information ........5 Logic Control Board ........29 Q-TEC Model Nomenclature ........5 Phase Monitor ............29 Shipping Damage ..........5 Condenser Fan Operation ........29 Unit Removal from Skid .........6 Sequence of Operation ........29 Handling Unit after Removal from Skid ....7 Balanced Climate...
- Page 27 Figure 21 Thermostat Connections ......24 Figure 22 Thermostat Connections ......25 Figure 23 Compressor Logic Control Board ....28 Figure 24 CCM LED Fault Illumination ....29 Figure 25 Control Disassembly .......34 Figure 26 Winding Test ..........34 Figure 27 Drip Loop ..........34 Figure 28 Control Connector Motor Half ....35 Figure 29...
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Page 28: Getting Other Information And Publications
GETTING OTHER INFORMATION AND PUBLICATIONS These publications can help when installing the air For more information, contact these publishers: conditioner. They can usually be found at the local ACCA Air Conditioning Contractors of America library or purchased directly from the publisher. Be 1712 New Hampshire Ave. -
Page 29: Q-Tec Model Nomenclature
Q-TEC GENERAL INFORMATION Q-TEC Model Nomenclature ACCESSORIES AND CONTROL MODEL SERIES OPTIONS X – Standard Controls CAPACITY E – Standard Controls, Low 36 – 3 Ton Ambient Control (LAC) 42 – 3½ Ton 48 – 4 Ton COIL OPTIONS X – Standard A –... -
Page 30: Unit Removal From Skid
Unit Removal from Skid The unit can be tipped forward and slid down the edge of the skid until the front wheels touch the ground. The It is not recommended that the unit be removed from wheels will not roll as they are shipped from the factory the skid with a fork lift as the air seal under the unit locked. -
Page 31: Handling Unit After Removal From Skid
Handling Unit after Removal from Skid FIGURE 4 Q-TEC Unit on Appliance Cart CAUTION Q/TEC UNIT Be careful pushing unit on rollers to prevent the unit from tipping over. Failure to do so could result in personal injury. The unit will have to be turned sideways and removed APPLIANCE CART from skid to fit through a doorway. -
Page 32: Minimum Installation Height
Minimum Installation Height The minimum installation height for ducted applications is 8' 4-1/2". This provides enough The minimum installation height of the unit with a free clearance to install the duct work (see Figure 6). blow plenum is 8' 6". This provides enough clearance for the plenum to be removed (see Figure 5). -
Page 33: Duct Work
Duct Work For hot water coil option, a QPBHW**-F for free blow or QPBHW**-D for ducted airflow is used. All duct work must be properly sized for the design When used with a ducted supply, a Q4CX 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 34: Switching Filter Sizes
Switching Filter Sizes All capacity, efficiency and cost of operation information as required for Department of Energy To switch from 1" to 2" filters, remove the filter slide “Energyguide” Fact Sheets are based upon the fresh and bend the tabs down out of the way to accommodate air blank-off plate in place and is recommended for the 2"... -
Page 35: Commercial Room Ventilator (Option)
Commercial Room Ventilator (Option) Before starting, make sure the power has been turned off. The commercial room ventilator (CRV) can be seen after the main front doors are opened. The CRV must be removed to gain access to the mist eliminator. 1. -
Page 36: Installation
INSTALLATION Basic Installation Design and This clearance is required to allow for the attachment of the unit to the sleeve and side trim pieces to the wall. Application Planning This unit is to be secured to the wall sleeve with Successful unit installations require proper planning mounting brackets provided. -
Page 37: Figure 13A
FIGURE 13A Unit Mounting – Method 1 Enlarged view of mounting bracket showing Side Trim SIDE TRIM sleeve to cabinet attachment (2 Pcs.) (2 PCS.) Mounting Bracket Wall Sleeve #8 Screw Provided (Light Color) Mounting MOUNTING Bracket BRACKET Cabinet Side Panel #10 Hex Side Trim... -
Page 38: Condensate Drain
FIGURE 14 floor or through the wall. If the drain is to be routed Remove Locking Screws from Wheels through an unconditioned space, it must be protected from freezing. The drain line must be able to be removed from the unit if it is necessary to remove the unit from the wall. -
Page 39: Optional Rear Drain Kits
FIGURE 17 Rear Drain (Top View) Drain Line Wall (maximum 10" for rear drain) Sleeve Couplings not shown but recommended for ease of removability for service Wall Bracket Water Trap Unit MIS-977 The drain box permanently mounts onto the wall sleeve Optional Rear Drain Kits and is then either piped directly outdoors, or can be Optional Rear Drain Kit Model QCDS48A is also... -
Page 40: Figure 18A
FIGURE 18A OVERFLOW TUBE CAULK AROUND TUBE WALL SLEEVE DRAIN BOX MIS-2469 FIGURE 18B PLUG INSTALLED IN SIDE Q/Tec DRAIN MIS-2469 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"... -
Page 41: Figure 18C
FIGURE 18C REMOVE KNOCK-OUT FOR INDOOR DRAIN HOSE CONNECTOR (If used) MIS-2471 A Manual 2100-752C Page 17 of 41... -
Page 42: Figure 18D
FIGURE 18D 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 A... -
Page 43: Indoor Ducted And Non-Ducted Applications
The spacing between louvers on the grille directly in front of the unit return grilles and registers. shall not be larger than 5/8". Bard recommends at least 2' between solid objects and return grilles or registers. Thermostat or Indoor Temperature Sensor Placement... -
Page 44: Figure 7 Figure
FIGURE 19 Unit Dimensions (Width) (Plenum Supply) (Returns) (Trim Width) Q36A4 42.0 30.0 (2) 17.0 43.0 Q42A4 Q48A4 48.0 40.0 (2) 20.0 49.0 All dimensions are in inches. Dimensional drawings are not to scale. TOP VIEW (SHOWN WITHOUT PLENUM) 5.000 SUPPLY AIR OPENING 2.000 1.625... -
Page 45: Wiring - Main Power
Wiring – Main Power The electrical data on the serial plate, in the unit specifications and also in Table 9 on page 38 list fuse Main electrical power must be supplied to the unit and wire sizes (75°C copper) for all models including from a clean, reliable power source. -
Page 46: Wiring - Low Voltage
Wiring – Low Voltage compressor cooling operation. The Y2 terminal is the 24VAC input for compressor cooling standard operation. All 230/208V 1 phase and 3 phase equipment have Y1 and Y2 are connected with a brass jumper bar which dual primary voltage transformers. All equipment leaves can be removed to enable Balanced Climate mode. -
Page 47: Freeze Protection Thermostat
Freeze Protection Thermostat high side system pressure. Operation of the LAC occurs as outdoor temperatures drop below 60ºF. LAC operation An evaporator freeze protection thermostat is supplied cycles the condenser fan on/off based on outdoor with all units. The freeze thermostat cuts out compressor temperature. -
Page 48: Figure 21
FIGURE 21 Thermostat Connections Completestat Model #CS9B-THOA or Model #CS9BE-THOA W1/E Thermostat YO/D W1/E Bard #8403-060 Optional CO2 Controller Bard Part #8403-096 24VAC CO2 OUT TEMP-OUT Unit Low B/W1 Voltage Term. Strip 12-Pin Vent Plug ALL VENT OPTIONS PLUG IN HERE If not equipped with a ventilation option to plug in, a jumper plug must be installed. -
Page 49: Figure 22 Thermostat Connections
Thermostat Connections Units With Dehumidification 8403-038 Mechanical Humidistat T4 Pro 8403-089 T6 Pro 8403-090 8403-092 8403-047 Electronic Humidistat Optional CO2 Controller Bard Part #8403-096 24VAC CO2 OUT TEMP-OUT Unit Low B/W1 Voltage Term. Strip 12-Pin Vent Plug ALL VENT OPTIONS PLUG IN HERE If not equipped with a ventilation option to plug in, a jumper plug must be installed. -
Page 50: Start Up
"Y1" at the compressor control module, first check Topping Off System Charge to make sure that either the optional vent is plugged If a leak has occurred in the system, Bard into the vent connection plug or the supplied jumper Manufacturing recommends reclaiming, evacuating plug is in place. -
Page 51: Important Installer Notes
Three Phase Scroll Compresser Start found on page 37. It is imperative to match the correct pressure table to the unit by model number. Up Information This unit employs high-flow Coremax valves instead of Scroll compressors, like several other types of the typical Shrader type valves. -
Page 52: Over And Under Voltage Protection
(see Figure 23). Troubleshooting Compressor Logic CCM FIGURE 23 The Bard Q**A4D Series is equipped with a high pressure switch, low pressure switch and freeze stat Compressor Logic Control Board switch. The switches are all located in the condenser section of the unit. -
Page 53: Logic Control Board
FIGURE 24 The freeze stat switch is located on the return bend tube located on the evaporator coil. When there is a CCM LED Fault Illumination fault related to the freeze stat switch, a red LED light will give notice by illumination, indicating a fault condition is present. -
Page 54: Balanced Climate Tm Mode
Balanced Climate™ is a great comfort feature that can easily be applied under any normal circumstances. If the Bard air conditioning system is being set up in a typical environment where 72°F is the lowest cooling setpoint, remove the Y1/Y2 jumpers from the upper and lower low voltage strips and install a 2-stage cooling thermostat. -
Page 55: Service
Also ensure the motor is secure in its mounting system, and the mounting system is secure to the unit. The Bard Q-TEC may be equipped with a low EXPOSED MOVING PARTS. ambient control pressure switch. This pressure... -
Page 56: Troubleshooting Ecm 142R Outdoor Fan Motors
Replacing the Motor This motor is replaced in one piece. The control cannot be replaced separately from the motor. Even if the control is remotely located, the replacement part will be a new control with harness and new motor. The correct replacement motor from the manufacturer that is a direct replacement for the failed motor must be used. -
Page 57: Troubleshooting Ecm Indoor Blower Motors
Troubleshooting ECM Indoor Blower 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 ducts, cabinets or panels... -
Page 58: Replacing Ecm Control Module
Replacing ECM Control Module Verify that the replacement control is correct for the application. Refer to the manufacturer’s authorized To replace the control module for the GE variable-speed indoor blower replacement list. USING THE WRONG CONTROL WILL motor, take the following steps: RESULT IN IMPROPER OR NO BLOWER OPERATION. -
Page 59: Table 6
TABLE 6 Troubleshooting ECM Indoor Blower Motors Part Load Continuous Cooling Heat 1st Heat 1st & Mode of Blower Full Load Dehum. ("Y1-Y2" Bank of Elec. 2nd Bank of Operation (Ventilation Cooling Mode Jumper Heat Elec. Heat Mode) Removed) Thermostat 24 VAC "G", "G", "B/W1",... -
Page 60: Fan Blade Setting Dimensions
Fan Blade Setting Dimensions R-410A Refrigerant Charge The correct fan blade setting for proper air delivery This unit was charged at the factory with the quantity of across the outdoor coil is shown in Figure 29. Refer to refrigerant listed on the serial plate. AHRI capacity and Table 7 for unit specific dimension. -
Page 61: Table 8A
TABLE 8A Cooling Pressure – Standard Airflow Air Temperature Entering Outdoor Coil °F Return Air Temp Model Pressure (DB/WB) Low Side 75/62 High Side Low Side Q36A4D 80/67 High Side Low Side 85/72 High Side Low Side 75/62 High Side Low Side Q42A4D 80/67... -
Page 62: Table 9
TABLE 9 Electrical Specifications − Q**A4D Series Single Circuit Multiple Circuit Maximum Minimum Rated Volts External Fuse Field Power Ground Model Maximum Field Circuit Field Minimum Ground & Phase Wire Size Wire Size External Power Ampacity... -
Page 63: Table 10
TABLE 10 Indoor Blower Performance Balanced Climate Model Rated ESP* Maximum ESP* Vent* Rated CFM* CFM* Q36A4D 0.15 1100 1150 Q42A4D 0.15 1300 1300 Q48A4D 0.20 1500 1500 1050 * These units are equipped with a variable speed (ECM) indoor motor that automatically adjusts itself to maintain approximately the same rate of indoor airflow in both heating and cooling, dry and wet coil conditions and at both 230/208 or 460 volts. -
Page 64: Graphs
GRAPH 1 Q36A4D FAD Ventilation Delivery GRAPH 2 Q42A4D FAD Ventilation Delivery Manual 2100-752C Page 40 of 41... -
Page 65: Graph 3
GRAPH 3 Q48A4D FAD Ventilation Delivery Manual 2100-752C Page 41 of 41... - Page 67 Important Control Panel Components – QA Dehumidification Layout View ..........10 Contact the installing and/or local Bard distributor Usage List ..........11 for all parts requirements. Make sure to have the complete model and serial number available from Control Panel Components –...
- Page 68 EXTERNAL COMPONENTS – STANDARD & DEHUMIDIFICATION SEXP-1022 Manual 2110-1568G Page 2 of 17...
- Page 69 EXTERNAL COMPONENTS – STANDARD & DEHUMIDIFICATION Part Number Description 135-401-6 Base Trim 135-402-6 Base Trim 141-510 Lower Wheel Rail 141-509 Upper Wheel Rail 135-399 Base Supports/Seal Angles 135-403 Base Supports/Seal Angles 527-588-X Base Assembly 527-595-X Base Assembly 141-368 Compressor Support 140-369 Compressor Support Plate 501-1088-*...
- Page 70 INTERNAL COMPONENTS – STANDARD & DEHUMIDIFICATION SEXP-1025 Manual 2110-1568G Page 4 of 17...
- Page 71 INTERNAL COMPONENTS – STANDARD & DEHUMIDIFICATION Part Number Description 103-417 Heater Package Offsets 117-191 Heat Strip Mounting Bracket 133-321 Heater Package Cover 105-987 Heat Strip Angle 117-422 Control Panel 117-429 Control Panel 165-618 Front "C" Channel 165-619 Front "C" Channel 131-172 Filter Angle - 16"...
- Page 72 FUNCTIONAL COMPONENTS – STANDARD & DEHUMIDIFICATION SEXP-1023 Manual 2110-1568G Page 6 of 17...
- Page 73 FUNCTIONAL COMPONENTS – QA DEHUMIDIFICATION Part Number Description 7004-009 Air Filter 1" Throw-Away (16 x 16 x 1) 7004-010 Air Filter 1" Throw-Away (16 x 20 x 1) 7003-032 Air Filter 2" MERV 4 (16 x 16 x 2) 7003-033 ...
- Page 74 FUNCTIONAL COMPONENTS – QH STANDARD & DEHUMIDIFICATION No. Part Number Description 7004-009 Air Filter 1" Throw-Away (16 x 16 x 1) 7003-032 Air Filter 2" MERV 4 (16 x 16 x 2) 7004-034 Air Filter 2" MERV 8 (16 x 16 x 2) 7004-069 ...
- Page 75 FUNCTIONAL COMPONENTS – QH STANDARD & DEHUMIDIFICATION Part Number Description 7004-009 Air Filter 1" Throw-Away (16 x 16 x 1) 7004-010 Air Filter 1" Throw-Away (16 x 20 x 1) 7003-032 Air Filter 2" MERV 4 (16 x 16 x 2) 7003-033 ...
- Page 76 CONTROL PANEL COMPONENTS – QA DEHUMIDIFICATION SEXP-1054 Manual 2110-1568G Page 10 of 17...
- Page 77 CONTROL PANEL COMPONENTS – QA DEHUMIDIFICATION Part Number Description 517-422 Control Panel (sheet metal only) 517-429 117-424 Low Voltage Box 8607-063 Low Voltage Strip 8611-140-0903 Cable Duct - 9 3/16" 8611-140-3200 Cable Duct - 32" 8611-140-2704 Cable Duct - 27 1/4" 3000-1524 Vent Jumper Plug (used when no vent installed) 8201-130...
- Page 78 CONTROL PANEL COMPONENTS – QH STANDARD & DEHUMIDIFICATION SEXP-1024 Manual 2110-1568G Page 12 of 17...
- Page 79 CONTROL PANEL COMPONENTS – QH STANDARD & DEHUMIDIFICATION Part Number Description 517-422 Control Panel (sheet metal only) X X X X X X X X X X X X X X X X X X 117-424 Low Voltage Box X X X X X X X X X X X X X X X X X X 8607-063 Low Voltage Strip X X X X X X X X X X X X X X X X X X...
- Page 80 CONTROL PANEL COMPONENTS – QH STANDARD & DEHUMIDIFICATION Part Number Description 517-429 Control Panel (sheet metal only) 117-424 Low Voltage Box 8607-063 Low Voltage Strip 8611-140-0903 Cable Duct - 9 3/16" 8611-140-3200 Cable Duct - 32" 8611-140-2704 Cable Duct - 27 1/4" 3000-1524 Vent Jumper Plug (used when no vent is installed) 8201-130...
- Page 81 This page intentionally left blank Manual 2110-1568G Page 15 of 17...
- Page 82 BLOWER ASSEMBLY COMPONENTS – Q24/30*4 SEXP-629 Dwg No. Part Number Description 5152-049 Blower Wheel S8105-059-0211 1/3 HP Programmed Motor S8105-059-0212 1/3 HP Programmed Motor 151-122 Housing C8105-059-0211 1/3 HP Control Only Replacement C8105-059-0212 1/3 HP Control Only Replacement Manual 2110-1568G Page 16 of 17...
- Page 83 BLOWER ASSEMBLY COMPONENTS – Q36/42/43/48*4 SEXP-942 Dwg No. Part Number Description 5154-005-0210 Complete Blower Assembly 5154-005-0215 Complete Blower Assembly 5154-007-0216 Complete Blower Assembly 5154-005-0228 Complete Blower Assembly C5154-005-0210 1/2 HP Programmed Motor C5154-005-0215 1/2 HP Programmed Motor C5154-007-0216 3/4 HP Programmed Motor C5154-005-0228 1/2 HP Programmed Motor Manual 2110-1568G...
- Page 85 When the humidistat is satisfied, the system automatically switches off. The result is separate humidity control at minimum operating cost. Bard Manufacturing Company, Inc. Manual: 7960-923 Bryan, Ohio 43506 Supersedes: NEW...
- Page 86 The valve can be opened manually using the magnetic EEV service tool (Bard MIS-4214 P/N 2151-021) shown in Figure 1. To do this, remove...
- Page 87 EEV service tool shown in 4. Check the signal voltage between the blue and Figure 1 (Bard Part # 2151-021). If valve still does not black wires (0.5-4.5VDC Actual). The following control, check the transducer and thermistor sensors as formula and Figure 3 can be used to determine if described on page 4.
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Page 88: Table 2
Thermistor Sensor 1. Make a visual check for broken wire insulation, 4. Compare the resistance reading to Table 2. Use broken wires or cracked epoxy material. sensor ambient temperature. (Tolerance of part is ±10 %.) 2. Disconnect 10k ohm NTC thermistor from the EEV control box. - Page 89 EVAPORATOR COIL Air Conditioning Mode Circuit Diagram REHEAT COIL CHECK VALVE CONDENSER COIL SUCTION PRESSURE TRANSDUCER FOR EEV COMPRESSOR 4-WAY VALVE MIS-4017 A EVAPORATOR COIL Dehumidification Mode Circuit Diagram REHEAT COIL CHECK VALVE CONDENSER COIL SUCTION PRESSURE TRANSDUCER FOR EEV COMPRESSOR 4-WAY VALVE MIS-4016 A...
- Page 90 Q36A4D Cooling and Dehumidification Application Data OD Temp. 75°F 85°F 95°F DB/WB Mode Dehum Dehum Dehum Total Cooling Btuh 38,300 16,000 36,300 11,600 34,300 7,100 Sensible Btuh 26,700 4,600 25,800 1,300 24,800 (2,000) 0.697 0.29 0.711 0.11 0.723 Latent Btuh 11,600 11,400 10,500...
- Page 91 Q42A4D Cooling and Dehumidification Application Data OD Temp. 75°F 85°F 95°F DB/WB Mode Dehum Dehum Dehum Total Cooling Btuh 38,300 16,000 36,300 11,600 34,300 7,100 Sensible Btuh 26,700 4,600 25,800 1,300 24,800 (2,000) 0.697 .029 0.711 0.11 0.723 Latent Btuh 11,600 11,400 10,500...
- Page 92 Q48A4D Cooling and Dehumidification Application Data OD Temp. 75°F 85°F 95°F DB/WB Mode Dehum Dehum Dehum Total Cooling Btuh 49,500 17,800 46,700 13,700 43,600 8,000 Sensible Btuh 34,200 3,900 32,800 1,100 31,200 -3,200 0.691 0.219 0.702 0.080 0.716 Latent Btuh 15,300 13,900 13,900...
- Page 93 TABLE 3 Dehumidification Relay Logic Board Outputs Energize on Unit Occupied/ Mode Inputs to the Board from the Terminal Strip Unoccupied Board Y1, G Cooling Unoccupied Y1, G, A Cooling Occupied Y1, G, A, D Cooling w/Dehum Occupied Y1, G, D Unoccupied Cooling w/Dehum ...
- Page 94 TABLE 4 Electrical Specifications − Q**A4D Series No. Field Rated Volts Minimum Maximum Model Power Field Power & Phase Circuit External Fuse Ground Wire Circuits Wire Size Ampacity or Ckt. Brkr. Q36A4DA0Z -A05 230/208-1 -A10 Q36A4DB0Z -B06 230/208-3 -B09...
- Page 96 If you can not show us the actual date of purchase, the time periods in this warranty will start on the date that we shipped your Bard product from our factory.
- Page 97 Factory coated coils have a “5” year warranty in corrosive environments that are listed as approved. Internet Resources Recognized as a leader in the HVAC industry, Bard combines quality products and outstanding service with innovation and technological advances to deliver high- performance heating and cooling products around the world. Please visit www.bardhvac.com...
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