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Bard MC4000 SERIES Installation instructions & replacement parts list

Manual is about: SOLID STATE DUAL UNIT LEAD/LAG CONTROLLER

Summary of MC4000 SERIES

  • Page 1

    Manual 2100-563c page 1 of 40 mc4000 series solid state dual unit lead/lag controller installation instructions & replacement parts list manual no.: 2100-563c supersedes: 2100-563b file: vol. Iii tab 19 date: 06-25-12 bard manufacturing company, inc. Bryan, ohio 43506 since 1914...Moving ahead, just...

  • Page 2

    Manual 2100-563c page 2 of 40 contents figures figure 1 controller connections 1-stage (wa/wl, w**a/ w**l series) a/c w/no economizers ..... 17 figure 2 controller connections 2-stage (wa*s/wl*s series) a/c - no economizers ................ 18 figure 3 controller connections 1-stage (wa/wl, w**a/ w*...

  • Page 3

    Manual 2100-563c page 3 of 40 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. Stand...

  • Page 4

    Manual 2100-563c page 4 of 40 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...

  • Page 5

    Manual 2100-563c page 5 of 40 specifications/features for basic controller mc4000 basic controller •input power: 18-32 vac, 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 -24 vdc or -48 vdc (-20 to - 56...

  • Page 6

    Manual 2100-563c page 6 of 40 specifications/features for alarm boards mc4000-a w/optional base alarm board (inputs/outputs) note: if this alarm board was not originally factory installed, it can be field-installed at anytime. Bard part number is ab3000-a. Mc4000-b w/enhanced version alarm board (ad...

  • Page 7

    Manual 2100-563c page 7 of 40 low voltage field wiring the mc4000 is powered from the air conditioners that it is controlling, 24 vac (18-32v) low voltage only. Circuitry in the mc4000 isolates the power supplies of the two air conditioners so that no back feeds or phasing problems can occur. Additi...

  • Page 8

    Manual 2100-563c page 8 of 40 general programming overview mc4000 controller buttons and function on/off button 1. Press and release the on/off button to turn on controller, 4-character display will illuminate and lead unit led will light. 2. Press and release the on/off button to turn off controlle...

  • Page 9

    Manual 2100-563c page 9 of 40 humidity control option note: this function is not available if controller is configured for heat pump. The standard air conditioning system can be adapted to perform dehumidification control by addition of a simple humidity controller that closes-on-rise, and is connec...

  • Page 10

    Manual 2100-563c page 10 of 40 4 th cooling set point is 2f (default setting, user selectable 2-3f) warmer than stage 3. On a call for 4th stage cooling the stage 4 led comes on solid (no delay), and the lag unit compressor will switch to compressor stage 2 full capacity operation. 3. 1-stage compre...

  • Page 11

    Manual 2100-563c page 11 of 40 6. 2-stage compressor units with newer econwmt economizers (see note a) 1 st stage cooling set point is the setting (sp) input into the controller. Factory default is 77f (25c). On a call for cooling the blower of the lead unit will come on immediately (if not already ...

  • Page 12

    Manual 2100-563c page 12 of 40 3 rd cooling set point is 2f (default setting, user selectable 2-3f) warmer than stage 2. On a call for 3 rd stage cooling the blower of the lag unit is turned on (if not already on – see blower operation), and the stage 3 led will blink for 10-seconds before going sol...

  • Page 13

    Manual 2100-563c page 13 of 40 5. 2-stage compressor units with newer econwmt economizers (see note a) 1 st stage cooling set point is the setting (sp) input into the controller. Factory default is 77f (25c). On a call for cooling the blower of the lead unit will come on immediately (if not already ...

  • Page 14

    Manual 2100-563c page 14 of 40 specifications for optional remote communication board cb4000 communication board note: if this communication board was not originally factory installed it can be field-installed at anytime. Bard part number is cb4000. Either the –a or –b alarm board is required for cb...

  • Page 15

    Manual 2100-563c page 15 of 40 user page 1. The designated admin person can assign up to 9 additional users and set-up as admin, write or read authority. 2. User name and password must be assigned, each must be at least 3 characters long, and are case sensitive. 3. Only “admin” can add, change or de...

  • Page 16

    Manual 2100-563c page 16 of 40 controller wiring the mc4000 can be used for controlling two (2) air conditioners with or without economizers. It can also be configured for two (2) heat pumps without economizers. Units with economizers will connect differently than units without economizers; therefor...

  • Page 17

    Manual 2100-563c page 17 of 40 m e t s y s e p y t l e d o m s e i r e s o n r e z i m o n o c e b - 0 0 0 4 c m r o a - 0 0 0 4 c m n o i t a c i n u m m o c h t i w r e z i m o n o c e o n – d r a o b m f i e r e d l o o n — r e z i m o n o c e n o i t a c i n u m m o c d r a o b m f i e r e d l o...

  • Page 18

    Manual 2100-563c page 18 of 40 figure 2 controller connections 2-stage (wa*s/wl*s series) air conditioners – no economizers.

  • Page 19

    Manual 2100-563c page 19 of 40 figure 3 controller connections 1-stage (wa/wl, w**a/w**l series) air conditioners – no economizer with alarm board & cb4000 communication board.

  • Page 20

    Manual 2100-563c page 20 of 40 figure 4 controller connections 2-stage (wa*s/wl*s series) air conditioners – no economizers with alarm board & cb4000 communication board.

  • Page 21

    Manual 2100-563c page 21 of 40 figure 5 controller connections 1-stage (wa/wl, w**a/w**l series) air conditioners with older style eifm economizers.

  • Page 22

    Manual 2100-563c page 22 of 40 figure 6 controller connections 2-stage (wa*s/wl*s series) air conditioners with older style eifm economizers.

  • Page 23

    Manual 2100-563c page 23 of 40 figure 7 controller connections 1-stage (wa/wl, w**a/w**l series) air conditioners with older style eifm economizers and with alarm board & cb4000 communication board.

  • Page 24

    Manual 2100-563c page 24 of 40 figure 8 controller connections 2-stage (wa*s/wl*s series) air conditioners with older style eifm economizers and with alarm board & cb4000 communication board.

  • Page 25

    Manual 2100-563c page 25 of 40 figure 9 controller connections 1-stage (wa/wl, w**a/w**l series) air conditioners with (econwmt) economizers.

  • Page 26

    Manual 2100-563c page 26 of 40 figure 10 controller connections 2-stage (wa*s/wl*s series) air conditioners with (econwmt) economizers.

  • Page 27

    Manual 2100-563c page 27 of 40 figure 11 controller connections 1-stage (wa/wl, w**a/w**l series) air conditioners with (econwmt) economizers and with alarm board & cb4000 communication board.

  • Page 28

    Manual 2100-563c page 28 of 40 figure 12 controller connections 2-stage (wa*s/wl*s series) air conditioners with (econwmt) economizers and with alarm board & cb4000 communication board.

  • Page 29

    Manual 2100-563c page 29 of 40 figure 13 controller connections heat pumps – no economizer.

  • Page 30

    Manual 2100-563c page 30 of 40 figure 14 controller connections heat pumps – no economizer with optional alarm board & cb4000 communication board.

  • Page 31

    Manual 2100-563c page 31 of 40 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 cap...

  • Page 32

    Manual 2100-563c page 32 of 40 figure 15 alarm board connections for normally closed "nc" open-on-alarm strategy important! Led display board is shipped loose to protect it from possible damage during installation of the wiring to main controller board and/or the alarm board. It is polarity sensitiv...

  • Page 33

    Manual 2100-563c page 33 of 40 figure 16 alarm board connections for normally open "no" close-on-alarm strategy important! Led display board is shipped loose to protect it from possible damage during installation of the wiring to main controller board and/or the alarm board. It is polarity sensitive...

  • Page 34

    Manual 2100-563c page 34 of 40 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 thro...

  • Page 35: Comfort Mode

    Manual 2100-563c page 35 of 40 7961-731 comfort mode press “comfort” button once to reset to 72f/22c cooling and 68f/20c heating for 1-hour. Display will flash during override period. Press 2nd-time to cancel during override if desired, or controller will automatically revert to selected sp after 1-...

  • Page 36

    Manual 2100-563c page 36 of 40 figure 17 parts list description diagram mis-2954 12 9 3 4 5 7 6 11 2 1 10 8.

  • Page 37

    Manual 2100-563c page 37 of 40 . G w d . O n . O n t r a p n o i t p i r c s e d 0 0 0 4 c m a - 0 0 0 4 c m c a - 0 0 0 4 c m b - 0 0 0 4 c m c b - 0 0 0 4 c m a - 0 0 0 3 b a b - 0 0 0 3 b a 0 0 0 4 b c 1 4 - 3 4 3 - 7 2 1 x o b l o r t n o c x x x x x 2 0 4 0 - 2 1 6 8 d r a o b r e ll o r t n o ...

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