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Bard MC4000 SERIES Installation & Parts Manual

Solid state dual unit lead/lag controller
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INSTALLATION INSTRUCTIONS
& REPLACEMENT PARTS LIST
MC4000 SERIES SOLID STATE
DUAL UNIT LEAD/LAG CONTROLLER
Bard Manufacturing Company, Inc.
Bryan, Ohio 43506
Since 1914...Moving ahead, just as planned.
Manual No.:
2100-563C
Supersedes:
2100-563B
File:
Vol. III Tab 19
Date:
06-25-12
Manual
2100-563C
Page
1 of 40

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  • Page 1 INSTALLATION INSTRUCTIONS & REPLACEMENT PARTS LIST MC4000 SERIES SOLID STATE DUAL UNIT LEAD/LAG CONTROLLER Bard Manufacturing Company, Inc. Manual No.: 2100-563C Bryan, Ohio 43506 Supersedes: 2100-563B File: Vol. III Tab 19 Since 1914...Moving ahead, just as planned. Date: 06-25-12 Manual...

  • Page 2: Table Of Contents

    CONTENTS Getting Other Information and Publications Figures MC4000 General Information Figure 1 Controller Connections 1-Stage (WA/WL, W**A/ Shipping Damage ..........4 W**L Series) A/C w/No Economizers ..17 General ..............4 Figure 2 Controller Connections 2-Stage (WA*S/WL*S Theory of Operation ..........4 Series) A/C - No Economizers ....

  • Page 3: Getting Other Information And Publications

    ASHRAE American Society of Heating, Refrigerating, and Air Conditioning Engineers, Inc. 1791 Tullie Circle, N.E. Atlanta, GA 30329-2305 Telephone: (404) 636-8400 Fax: (404) 321-5478 BARD Bard Manufacturing Company, Inc. 1914 Randolph Drive Bryan, OH 43506 Telephone: (419) 636-1194 Fax: (419) 636-2640 Manual 2100-563C...

  • Page 4: Shipping Damage

    This ISM device also complies with Canadian ICES – 001. units. It can be used with units with or without economizers and it is recommended that both units be Bard Manufacturing Company, Inc. equipped alike. Bryan, OH 43506 Manual 2100-563C...

  • Page 5: Mc4000 Basic Controller

    200 feet. Use 18-gauge twisted pair •Space temperature sensors: 1 local is standard, will accept up with soldered connections. to 2 optional 25' remote sensors, Bard part number 8612-023. When multiple sensors are used, temperatures are averaged TEMPERATURE SENSOR LOGIC •Controller Enclosure: 20-gauge pre-painted steel, 9.25"W x...

  • Page 6: Mc4000 Controller Connections

    C – 24VAC common Unit #1 NOTE: If this alarm board was not originally factory R – 24VAC hot installed, it can be field-installed at anytime. Bard G – fan (Form A, NO) part number is AB3000-A. Y1 – 1 -stage cool (Form A, NO) Y2 –...

  • Page 7: Earth Ground

    ADVANCE (SWAP) LEAD/LAG UNIT FEATURE IMPORTANT NOTE: Older Bard R-22 models employ an electronic blower control that has a 60-second Pressing the Advance button for one (1) second will cause blower off-delay. Current production R-410A models do the lead and lag units to change positions.

  • Page 8: Program Button

    GENERAL PROGRAMMING OVERVIEW MC4000 CONTROLLER BUTTONS AND FUNCTION On/Off Button Press and release the On/Off button to turn On controller, 4-character display will illuminate and Lead unit LED will light. Press and release the On/Off button to turn Off controller. Controller will go dark and A/C units will stop. Comfort Button Press and release the Comfort button to change the Cooling Set Point to 72F and the Heating Set Point to 68F for a period of 1 hour.
  • Page 9 H1 and H2 on the main controller cooling the blower of the lead unit will come on board. Recommended Bard Part #8403-038 (H600A immediately (if not already on – See Blower Operation), 1014). Both HVAC units must be equipped with electric and the Stage 1 LED will blink for 10-seconds before heat for this sequence to work properly.
  • Page 10 cooling set point is 2F (default setting, user selectable cooling set point is 4F (default setting, user selectable 2- 2-3F) warmer than Stage 3. On a call for 4th Stage 6F) warmer than Stage 1. On a call for 2 Stage cooling the cooling the Stage 4 LED comes on solid (no delay), and blower of the lag unit is turned on (if not already on –...
  • Page 11 6. 2-Stage Compressor Units with Newer COOLING OPERATING SEQUENCES FOR ECONWMT Economizers (See Note A) NON-ALTERNATING LEAD/LEAD/LAG/ LAG CONFIGURATION stage cooling set point is the setting (SP) input into the controller. Factory default is 77F (25C). On a call Note: Heat pumps cannot be operated in Non-Alternating for cooling the blower of the lead unit will come on Lead/Lead/Lag/Lag sequence.
  • Page 12 cooling set point is 2F (default setting, user selectable cooling set point is 2F (default setting, user selectable 2-3F) warmer than Stage 2. On a call for 3 Stage 2-3F) warmer than Stage 3. On a call for 4 Stage cooling the blower of the lag unit is turned on (if not cooling the lag unit Y2 cooling output turns on already on –...
  • Page 13 5. 2-Stage Compressor Units with Newer HEATING SEQUENCE OF OPERATION ECONWMT Economizers (See Note A) Note: All heating sequences for air conditioners with stage cooling set point is the setting (SP) input into electric heat or heat pumps will automatically operate in the controller.
  • Page 14 LOG IN PAGE 3. If economizers are used an additional 24V signal Type in “Admin” for the user name and “Bard” for the wire is required from each air conditioner to the password. These are case sensitive. Hit “Log In”.
  • Page 15 If economizers are used if on or off (Note: f. Lock/Unlock Controller older style EIFM economizers require a simple g. Advance Lead to Lag Unit relay kit for this feature to work, Bard Part h. Comfort Mode Number 8620-221) i. Restore System Defaults 2.
  • Page 16 CONTROLLER WIRING GENERATOR RUN FEATURE The MC4000 can be used for controlling two (2) air If desired, the MC4000 controller can be signaled from a conditioners with or without economizers. It can also be standby generator system to lockout (disable operation) configured for two (2) heat pumps without economizers.

  • Page 17: Controller Connections

    TABLE 1 HOOK-UP DIAGRAM SELECTION TABLE — REFERENCE FIGURE 1 SHOWN — — – FIGURE 1 CONTROLLER CONNECTIONS 1-STAGE (WA/WL, W**A/W**L SERIES) AIR CONDITIONERS – NO ECONOMIZER Manual 2100-563C Page 17 of 40...
  • Page 18 FIGURE 2 CONTROLLER CONNECTIONS 2-STAGE (WA*S/WL*S SERIES) AIR CONDITIONERS – NO ECONOMIZERS Manual 2100-563C Page 18 of 40...
  • Page 19 FIGURE 3 CONTROLLER CONNECTIONS 1-STAGE (WA/WL, W**A/W**L SERIES) AIR CONDITIONERS – NO ECONOMIZER WITH ALARM BOARD & CB4000 COMMUNICATION BOARD Manual 2100-563C Page 19 of 40...
  • Page 20 FIGURE 4 CONTROLLER CONNECTIONS 2-STAGE (WA*S/WL*S SERIES) AIR CONDITIONERS – NO ECONOMIZERS WITH ALARM BOARD & CB4000 COMMUNICATION BOARD Manual 2100-563C Page 20 of 40...
  • Page 21 FIGURE 5 CONTROLLER CONNECTIONS 1-STAGE (WA/WL, W**A/W**L SERIES) AIR CONDITIONERS WITH OLDER STYLE EIFM ECONOMIZERS Manual 2100-563C Page 21 of 40...
  • Page 22 FIGURE 6 CONTROLLER CONNECTIONS 2-STAGE (WA*S/WL*S SERIES) AIR CONDITIONERS WITH OLDER STYLE EIFM ECONOMIZERS Manual 2100-563C Page 22 of 40...
  • Page 23 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 Manual 2100-563C Page 23 of 40...
  • Page 24 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 Manual 2100-563C Page 24 of 40...
  • Page 25 FIGURE 9 CONTROLLER CONNECTIONS 1-STAGE (WA/WL, W**A/W**L SERIES) AIR CONDITIONERS WITH (ECONWMT) ECONOMIZERS Manual 2100-563C Page 25 of 40...
  • Page 26 FIGURE 10 CONTROLLER CONNECTIONS 2-STAGE (WA*S/WL*S SERIES) AIR CONDITIONERS WITH (ECONWMT) ECONOMIZERS Manual 2100-563C Page 26 of 40...
  • Page 27 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 Manual 2100-563C Page 27 of 40...
  • Page 28 FIGURE 12 CONTROLLER CONNECTIONS 2-STAGE (WA*S/WL*S SERIES) AIR CONDITIONERS WITH (ECONWMT) ECONOMIZERS AND WITH ALARM BOARD & CB4000 COMMUNICATION BOARD Manual 2100-563C Page 28 of 40...
  • Page 29 FIGURE 13 CONTROLLER CONNECTIONS HEAT PUMPS – NO ECONOMIZER Manual 2100-563C Page 29 of 40...
  • Page 30 FIGURE 14 CONTROLLER CONNECTIONS HEAT PUMPS – NO ECONOMIZER WITH OPTIONAL ALARM BOARD & CB4000 COMMUNICATION BOARD Manual 2100-563C Page 30 of 40...

  • Page 31: Alarm Wiring

    -B alarm board and connection of terminals NOTE: The LED display board can be replaced if E and F from the air conditioner 24V terminal block to needed independently of the alarm board. Bard the matching terminals on the alarm board. part number is 8612-022.
  • Page 32 FIGURE 15 ALARM BOARD CONNECTIONS FOR NORMALLY CLOSED "NC" OPEN-ON-ALARM STRATEGY Note 1: 2nd Stage, Econ 1, Econ 2, High Temp 2 and Controller alarms are only on -B alarm board. All other alarms are on both -A and -B alarm boards. 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.
  • Page 33 FIGURE 16 ALARM BOARD CONNECTIONS FOR NORMALLY OPEN "NO" CLOSE-ON-ALARM STRATEGY Note 1: 2nd Stage, Econ 1, Econ 2, High Temp 2 and Controller alarms are only on -B alarm board. All other alarms are on both -A and -B alarm boards. 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.

  • Page 34: Programming Instructions

    To change the setting of any step, press the CHANGE PROGRAMMING INSTRUCTIONS button and the display will stop flashing, allowing To swap lead and lag unit positions, press the change to the setting by using the DOWN or UP arrows. ADVANCE button.
  • Page 35 MC4000 Series Solid State Dual Unit Lead Lag Controller CLIMATE CONTROL SOLUTIONS Operating Instructions Cooling Stage Stage Stage Stage 1. To swap lead and lag units press “ADVANCE” . 2. To enter the Program mode press the Heating Stage Stage Stage Stage “Program”...

  • Page 36: Parts List

    FIGURE 17 PARTS LIST DESCRIPTION DIAGRAM MIS-2954 Manual 2100-563C Page 36 of 40...
  • Page 37 Parts List l o r l o r r e l r a l r a l r a l l o r i t t i o i t Manual 2100-563C Page 37 of 40...
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This manual is also suitable for:

Mc4000-aMc4000-acMc4000-bMc4000-bc

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