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Bard DC3002 manual

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Table of contents for the manual

  • Page 1

    Manual 2100-484E Page 1 of 22 DC3002 and DC3003 SOLID ST A TE LEAD/LAG CONTROLLER with DC F AN CONTROL INST ALLA TION INSTRUCTIONS & REPLACEMENT P ARTS LIST Manual No.: 2100-484E Supersedes: 2100-484D File: V ol. III T ab 19 Date: 08-29-1 1 Bard Manufacturing Company , Inc. Bryan, Ohio 43506 Since 1914...Moving ahead, just as planned.[...]

  • Page 2

    Manual 2100-484E Page 2 of 22 CONTENTS Getting Other Information and Publications 3 DC3000 General Information Shipping Damage .................................................. 4 General .................................................................. 4 Theory of Operation ............................................... 4 Controller Certificatio[...]

  • Page 3

    Manual 2100-484E Page 3 of 22 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. Standard for the Installation .............. ANSI/NFPA [...]

  • Page 4

    Manual 2100-484E Page 4 of 22 SHIPPING DAMAGE Upon receipt of equipment, the carton should be checked for external signs of shipping damage. If damage is found, the receiving party must contact the last carrier immediately, preferably in writing, requesting inspection by the carrier’s agent. GENERAL NOTE: DC3000 is used throughout this Manual as [...]

  • Page 5

    Manual 2100-484E Page 5 of 22 SPECIFICATIONS/FEATURES FOR BASIC CONTROLLER DC3000 Basic Controller •Input power: 18 to 32VAC, 60/50Hz, power is supplied from A/C #1 and/or A/C #2 •Isolation circuitry: no line or low voltage phasing required •Backup power: connection for -24VDC or -48VDC (-20 to -56V) maintains microprocessor operation, front [...]

  • Page 6

    Manual 2100-484E Page 6 of 22 Note: All alarm relays are dry contacts rated 1A @ 24VAC, 120VAC or 150VDC. DC3002/3003 CONTROLLER CONNECTIONS Located on Main Controller Board Unit #1 C – 24V AC common R – 24V AC hot G – fan (Form A, NO) Y1 – 1 st -stage cool (Form A, NO) Y2 – 2 nd -stage cool (Form A, NO) W – heat (Form A, NO) Unit #2 C [...]

  • Page 7

    Manual 2100-484E Page 7 of 22 LOW VOLTAGE FIELD WIRING The DC3000 is powered from the air conditioners that it is controlling, 24VAC (18-32V) low voltage only. Circuitry in the DC3000 isolates the power supplies of all connected air conditioners so that no back feeds or phasing problems can occur. Additionally, if any air conditioner loses power, t[...]

  • Page 8

    Manual 2100-484E Page 8 of 22 SEQUENCE OF OPERATION – COOLING AIR CONDITIONERS – (NO ECONOMIZER) First stage cooling set point is the setting (SP) input into the controller. Factory default is 75F/24C. At Stage 1 cooling SP, the blower of the lead unit will come on (if not already operating because of continuous fan selection for lead unit). Th[...]

  • Page 9

    Manual 2100-484E Page 9 of 22 SEQUENCE OF OPERATION – HEATING (AIR CONDITIONERS W/ELECTRIC HEAT) First stage heating set point is the dead band setting below first stage cooling set point (the SP entered into the program). The dead band is adjustable from 2-20F (1-10C), and the factory default is 10F (5C). Second stage heating set point is 2F (1C[...]

  • Page 10

    Manual 2100-484E Page 10 of 22 DC FAN CONTROL The primary reason the DC30002 or DC3003 controller system would be used is for additionally controlling a DC Fan ventilation system installed in the shelter in addition to controlling either 2 or 3 HV AC units. The DC Fan package and intake system is independent of the HV AC systems, and is supplied by[...]

  • Page 11

    Manual 2100-484E Page 11 of 22 FIGURE 1 DC3002 CONNECTION DIAGRAM 2 UNITS WITH ECONOMIZERS[...]

  • Page 12

    Manual 2100-484E Page 12 of 22 FIGURE 2 DC3002 CONNECTION DIAGRAM 2 UNITS NO ECONOMIZERS[...]

  • Page 13

    Manual 2100-484E Page 13 of 22 FIGURE 3 DC3003 CONNECTION DIAGRAMS 3 UNITS WITH ECONOMIZERS[...]

  • Page 14

    Manual 2100-484E Page 14 of 22 FIGURE 4 DC3003 CONNECTION DIAGRAMS 3 UNITS WITH ECONOMIZERS (NO ECONOMIZER A/C #3)[...]

  • Page 15

    Manual 2100-484E Page 15 of 22 FIGURE 5 DC3003 CONNECTION DIAGRAMS 3 UNITS WITH NO ECONOMIZERS[...]

  • Page 16

    Manual 2100-484E Page 16 of 22 ALARM WIRING Alarm relays can be wired for NO (close on alarm) or NC (open on alarm) strategy. Alarm relays can be used individually if there are enough available building alarm points, or can be arranged into smaller groups or even a single group so that all alarm capabilities can be utilized. When multiple alarms ar[...]

  • Page 17

    Manual 2100-484E Page 17 of 22 FIGURE 6 ALARM BOARD CONNECTIONS FOR NORMALLY CLOSED "NC" OPEN-ON-ALARM STRATEGY[...]

  • Page 18

    Manual 2100-484E Page 18 of 22 FIGURE 7 ALARM BOARD CONNECTIONS FOR NORMALLY OPEN "NO" CLOSE-ON-ALARM STRATEGY[...]

  • Page 19

    Manual 2100-484E Page 19 of 22 PROGRAMMING INSTRUCTIONS To swap lead and lag unit positions, press the ADVANCE button. To enter the Program mode, press the PROGRAM button and release it when the message PROG appears on the display. When in Program mode, the DOWN and UP arrows are used to scroll through the programming steps. NOTE: When using the UP[...]

  • Page 20

    Manual 2100-484E Page 20 of 22 7961-665C Cooling Heati ng 1st Stage 2nd Stage 3rd Stage 4th Stage 1st Stage 4th Stage 3rd Stage 2nd Stage Lead Unit Unit #1 Unit #2 Dehumid . Op er ation Program Advance Comfort Digital Display Temperature at Remote 1 sensor l ocation* Lead-lag-change-over ti me (1 to 30 days or 0 for disabl ed, Default i s 7) Cooli [...]

  • Page 21

    Manual 2100-484E Page 21 of 22 FIGURE 8 PARTS LIST DESCRIPTION DIAGRAM 5 7 3 4 6 9 2 11 SEXP- 445 B 8 1 10[...]

  • Page 22

    Manual 2100-484E Page 22 of 22 Parts List . o N . g w D. o N t r a Pn o i t p i r c s e D2 0 0 3 C D3 0 0 3 C D 14 - 3 4 3 - 7 2 1x o B l o r t n o CX X 27 3 0 - 2 1 6 8d r a o B r e l l o r t n o CX X 35 2 0 - 2 1 6 82 0 0 3 B A d r a o B m r a l AX 36 2 0 - 2 1 6 83 0 0 3 B A d r a o B m r a l AX 42 2 0 - 2 1 6 8y a l p s i D m r a l AX 54 - 0 4 [...]