Bard D25A2PA User Manual Download

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Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
www.bardhvac.com

Manual: 2100-643C
Supersedes: 2100-643B
Date: 7-28-16

INSTALLATION AND

SERVICE INSTRUCTIONS

DUAL-TEC™

WALL-MOUNT PACKAGE

AIR CONDITIONER

Models:

NOTE: LC Series Controllers must be used with

D-Series Wall-Mount Units

Part of the Bard DC Free Cooling Unit System

D25A2PA

D28A2PA
D28A2PB

D35A2PA
D35A2PB
D36A2PA
D36A2PB

D42A2PA
D42A2PB
D48A2PA
D48A2PB
D60A2PA
D60A2PB

D25L2PA
D25L2PB
D28L2PA
D28L2PB

D35L2PA
D35L2PB
D36L2PA
D36L2PB

D42L2PA
D42L2PB
D48L2PA
D48L2PB
D60L2PA
D60L2PB

Summary of Contents for D25A2PA

Page 1: ...WALL MOUNT PACKAGE AIR CONDITIONER Models NOTE LC Series Controllers must be used with D Series Wall Mount Units Part of the Bard DC Free Cooling Unit System D25A2PA D28A2PA D28A2PB D35A2PA D35A2PB D...

Page 2: ...10 Blower Motor Start Relay Circuit 33 Figure 2 11 D25A L D35A L Unit Control Panel 34 Figure 2 12 D28A L D36A L D42A L D48A L D60A L Unit Control Panel 35 Figure 2 13 WIRING D25A L D35A L Unit Wirin...

Page 3: ...ould be carefully read before beginning the installation Note particularly any tags and or labels attached to the equipment While these instructions are intended as a general recommended guide they do...

Page 4: ...55 Fax 617 984 7057 ANSI Z535 5 Definitions Danger Indicate s a hazardous situation which if not avoided will result in death or serious injury The signal word DANGER is to be limited to the most extr...

Page 5: ...Manual 2100 643C Page 5 of 59 SECTION 1 INSTALLATION INSTRUCTIONS...

Page 6: ...ners sufficient for mounting the units such as 5 16 diameter anchor carriage lag bolts 7 8 diameter washers Caulking materials Miscellaneous hand and power tools and jobsite or shop materials Lifting...

Page 7: ...ation of condenser discharge air can be from either a single unit or multiple units Any object such as shrubbery a building or a large object can cause obstructions to the condenser discharge air Reci...

Page 8: ...n Air Access Panel Disconnect 4 Pitch Cond Built In Rain Hood Heater Lockable Electrical Air Entrance Panel Access Low Voltage Entrance Drain Inlet Side View C Breaker High Voltage Electrical ECON Hoo...

Page 9: ...in Figures 1 3A C on pages 10 12 On wood frame walls the wall construction must be strong and rigid enough to carry the weight of the unit without transmitting any unit vibration Concrete block walls...

Page 10: ...Y AIR DUCT IS REQUIRED FROM COMBUSTABLE MATERIALS RAIN FLASHING TOP SUPPLY AIR OPENING Right Side View HEATER ACCESS TOP FLASHING AT TIME OF INSTALLATION SEAL WITH BEAD IT IS RECOMMENDED THAT A BEAD O...

Page 11: ...4 29 3 4 32 12 5 1 2 2 NOTES WALL STRUCTURE 1 SUPPLY AIR IT IS RECOMMENDED THAT A BEAD OF OPENING Right Side View RAIN FLASHING SILICONE CAULKING BE PLACED BEHIND RECOMMENDED 1 CLEARANCE FROM THE SID...

Page 12: ...OM COMBUSTIBLE MATERIALS REQUIRED DIMENSIONS TO MAINTAIN OPENING COMBUSTIBLE MATERIALS B D E PANEL AIR DUCT IS REQUIRED 32 10 1 2 Right Side View SUPPLY AIR RECOMMENDED 1 CLEARANCE FROM MIS 3789 RAIN...

Page 13: ...ME WALL INSTALLATION OPENING WALL BEFORE MOUNT ON UNIT OPENING BEFORE INSTALLATION BOTTOM MOUNTING CONCRETE BLOCK WALL INSTALLATION BRACKET MOUNT ON OPENING WOOD OR STEEL SIDING OPENING INSTALLING UNI...

Page 14: ...REST OF WALL A SECOND MEMBER MAY BE REQUIRED FOR SOME WALLS MIS 549 B ALL AROUND DUCT FIGURE 1 7 Common Wall Mounting Installations SUPPLY DUCT MAYBE LOCATED IN AN ATTIC OR BELOW CEILING RAFTERS AS S...

Page 15: ...nd also on the wall mount units Run communication wires in separate conduit whenever possible If a unique installation occurs where it is not possible to isolate the communication wires it is permissi...

Page 16: ...Wire Size Minimum Circuit Ampacity Maximum External Fuse or Ckt Breaker Field Power Ground Wire Size D25A2PA0Z D25L2PA0Z 208 230 60 1 19 30 10 10 15 6 20 12 D25A2PA05 D25L2PA05 208 230 60 1 26 30 8 10...

Page 17: ...ormer 2 If incoming AC voltage is 220VAC or above shut off AC breaker to unit and move factory 240V wire to 208V terminal 3 If incoming AC voltage is below 220VAC Shelter supply breaker in ON position...

Page 18: ...nd system will operate normally If the Polarity Voltage Monitor is showing a problem with polarity and or voltage see pages 41 and 42 of the Service section of this manual for instructions on checking...

Page 19: ...h the other unit still operating Once the first of the two Bard wall mount units is installed Orphan Mode can be enabled early in the installation keeping the climate inside the shelter stable and the...

Page 20: ...Manual 2100 643C Page 20 of 59...

Page 21: ...Manual 2100 643C Page 21 of 59 SECTION 2 SERVICE INSTRUCTIONS...

Page 22: ...d to insure optimal system performance Refer to instructions for the cylinder that is being utilized for proper method of liquid extraction SAFETY PRACTICES 1 Never mix R 410A with other refrigerants...

Page 23: ...2A L 75 DB 62 WB Low Side High Side 131 315 132 331 134 348 136 368 137 388 139 410 142 435 144 461 146 489 149 520 8552 079 8552 005 1 240V 45 10 370 3 240V 10 370 80 DB 67 WB Low Side High Side 140...

Page 24: ...nt of the outdoor air is below 60 F 3 The outdoor humidity is below 80 RH 4 The indoor humidity is below 60 RH To signal the 24VDC damper actuator to open a 2 10VDC signal must come from the Y2 termin...

Page 25: ...atic If the temperature outside is cooler than the internal temperature and there is a generated cooling call the control board will send 1 2 10VDC Signal from terminal Y2 Damper Signal Modulates damp...

Page 26: ...the controller will notify of an alarm and lock out the compressor However if the switch closes during this time the compressor will start again and wait for 2 minutes OAT above 50 F or 3 minutes OAT...

Page 27: ...rameters are permanently stored on FLASH MEMORY in case of power failure The controller is designed to manage temperature levels to a user defined setpoint via control output signals to the wall mount...

Page 28: ...s in Minutes Blower On 0 00 Damper Open 0 00 2 40 Closed 2 41 4 57 Compressor On 4 58 Off 6 00 Heat On 6 01 Off 7 10 Blower Off 8 19 FIGURE 2 5 TEC EYETM Status Display TEC EYETM Menu Structure On Off...

Page 29: ...Press ENTER key to scroll to Mode line Press DOWN key to change Auto to Hand 6 Press ENTER key to scroll to Manual Value line Press UP or DOWN arrow keys to change the manual value to a desired value...

Page 30: ...to 5 minute timer red dial This module features a delay on make for initial start up or anytime power is interrupted for a minimum 2 minutes plus 10 of the red dial setting There is no delay during r...

Page 31: ...310 98 0 6098 15 0 139576 23 0 42295 61 0 14921 99 0 5961 14 0 134956 24 0 41077 62 0 14544 100 0 5827 13 0 130506 25 0 39898 63 0 14177 101 0 5697 12 0 126219 26 0 38757 64 0 13820 102 0 5570 11 0 12...

Page 32: ...e control board Phoenix Mini MCR Style ZETTLER ISOLATION RELAYS WALL MOUNT UNIT Black Zettler surface mount relays used in the wall mount unit to isolate the start signal from Power loss relay circuit...

Page 33: ...Manual 2100 643C Page 33 of 59 FIGURE 2 8 Power Loss Relay Circuit FIGURE 2 9 High Pressure Relay Circuit FIGURE 2 10 Blower Motor Start Relay Circuit Blower Motor Start Relay...

Page 34: ...TY VOLTAGE MONITOR TRANSFORMER CIRCUIT BREAKER DIN RAIL END CLAMP TERMINAL BLOCK MOUNTING FOOT TERMINAL PLC CONTROLLER END CLAMP WIRE SHIELD BRACKET PTCR MTG 40 AMP CAPACITOR 2 POLE CONTACTOR BRACKET...

Page 35: ...ERMINAL BLOCK DC CIRCUIT DC POLARITY CABLE DUCT RS485 LABEL DIN RAIL END CLAMP TERMINAL BLOCK SHEATHED CABLE WIRE SHIELD DEVICE MOTOR STARTING BRACKET CAPACITOR CAPACITOR PANEL CONTROL BLOCK TERMINAL...

Page 36: ...0 39 30 41 40 42 43 43 43 44 45 32 75 48 46 46 51 32 52 43 40 45 50 59 25 63 61 62 60 64 66 67 67 68 68 70 71 Red Red Black Red Red Red White Red White 70 Red 54 Red Black 65 66 83 84 87 48 76 49 99 5...

Page 37: ...ODULE 28 23 23 35 14 11 9 3 2 22 37 66 87 90 39 30 40 41 40 43 42 42 42 44 45 47 75 48 46 46 46 51 47 52 42 40 42 45 50 42 40 58 57 59 42 63 61 62 60 64 66 67 67 68 68 70 Red Red Black Red Red Red Whi...

Page 38: ...ll mount unit 1 Disable system from LC controller see controller manual 2 Turn off both AC and DC breakers at wall mount units 3 Check inlet sides of condenser and evaporator coils for obstructions de...

Page 39: ...lower Motor To troubleshoot the 48VDC blower motor check for proper voltage and commands to the motor controller from the wall mount unit Under a command for blower FIGURE 2 15 Troubleshooting Motor P...

Page 40: ...n 5 and the red lead on Pin 1 of the female portion of the Molex style plug connecting the motor controller to the back of the wall mount control cabinet Nominal voltage should be 2 8VDC to 7VDC Refer...

Page 41: ...tep 1 Multimeter set to VDC Display reveals 0 voltage potential Bard System Supply Breakers VDC breaker in OFF position Shelter VDC Power Supply 48VDC Positive Ground 0 VDC Bard System Supply Breakers...

Page 42: ...ng Incoming Voltage VDC 48VDC Shelter System Voltage Range 40VDC 56VDC Typical Running Range 48VDC 53VDC Multimeter set to VDC Shelter supply breaker in ON position Bard system breaker in OFF position...

Page 43: ...tch is defective Check if the high pressure switch is OK If defective replace Check if the connection to the corresponding input terminal is ok or if the controller board is defective Check if the con...

Page 44: ...is faulty a sensor wire is loose or an out of range value is read Check the outdoor temperature sensor wiring Check temperature vs resistance of temperature sensor see Table 2 3 on page 31 Replace th...

Page 45: ...Manual 2100 643C Page 45 of 59 SECTION 3 APPENDIX...

Page 46: ...H Current outdoor air humidity Dewpoint F Current temperature of dewpoint Blower Off On Displays status of blower Damper Displays percentage of current opening Master Control Master Control Current op...

Page 47: ...Low Pressure Setup Outside Setpoint 0 F 99 9 F 55 F Temperature at which control separates two 2 different low pressure situations Differential 0 F 9 9 F 5 F This differential applies to the outside s...

Page 48: ...0 60 minutes Start First Second Third Fourth Last Last Sunday Saturday Sunday January December March 0 00 12 00 2 00 End F in at 0 00 12 00 irst Second Third Fourth Last Last Sunday Saturday Sunday Ja...

Page 49: ...lower Motor 0 00vdc Analog Output 2 Damper 2 70vdc End of INPUTS OUTPUTS ALARM HISTORY 020 Damper Close Fail Supply Air Outdoor Air Return Air Outdoor Humidity Blower Speed Damper Position End of ALAR...

Page 50: ...76 8 3276 7 Hours of operation Num Starts 3276 8 3276 7 Number of starts Heat Run Hours 3276 8 3276 7 Hours of operation Num Starts 3276 8 3276 7 Number of starts Blower Run Hours 3276 8 3276 7 Hours...

Page 51: ...t Input B007 Offset 9 9 9 9 0 Value 3276 8 3276 7 Manual Management Analog Inputs Supply Air Temp Manual Control B001 Off On Off On to manually change temperature seen by controller Manual Position 10...

Page 52: ...alue in manual position Digital Inputs Power Loss Manual DI 1 Off On Off On to allow artificial manipulation power loss input Manual Position Closed Open Closed Change to Open to artifically create po...

Page 53: ...ge 1 relay action Manual Position Off On Off Change to On to artificially force cooling stage 1 relay Relay 2 Status Off On Off Current status of cooling stage 1 relay off means no relay action Coolin...

Page 54: ...TORY Initialization Passwords Insert new passwords User 2000 Technician PW1 1313 Factory PW2 9254 Configuration Temperature Units F C F Pressure Units psi bar psi Force Clock Enable Yes No Yes Clock M...

Page 55: ...4VDC NTC HT 50T90 10T170 nu10 SPKP00B7T0 nu12 nu13 Normal Ohm x5 Minimum 3276 8 3276 7 0 0 Maximum 3276 8 3276 7 100 0 Offset 3276 8 3276 7 0 0 Value 3276 8 3276 7 Supply Air Temp Input B001 Out of Ra...

Page 56: ...able B003 On Off On Resolution Normal High Res Type Ohm x5 Ohm x1 NTC PT1000 0 1VDC 0 10VDC 4 20mA On Off 0 4VDC NTC HT 50T90 10T170 nu10 SPKP00B7T0 nu12 nu13 Normal Ohm x5 Minimum 3276 8 3276 7 0 0 M...

Page 57: ...Value 3276 8 3276 7 Outdoor Humidity Input B005 Out of Range Alarm Power Delay 0s 999s 5 Seconds Run Delay 0s 999s 5 Seconds Units Pressure Temperature Other Freeze Enable B007 On Off On Resolution No...

Page 58: ...sed Delay 0s 999s 1 Second Status High Pressure Switch Enable Channel 3 On Off On Action Closed Open Open Delay 0s 999s 0 Seconds Status Low Pressure Switch Enable Channel 4 On Off On Action Closed Op...

Page 59: ...puts Blower Motor Enable Yes No Yes Channel 1 0 1 Action Direct Reverse Direct Minimum 0 10v 0v Maximum 0 10v 10v Damper Enable Yes No Yes Channel 2 0 2 Action Direct Reverse Direct Minimum 0 10v 2 7v...

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