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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 2100-563C
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CONTENTS Getting Other Information and Publications 3 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................ 18
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Getting Other Information and Publications These publications can help you install the air FOR MORE INFORMATION, CONTACT conditioner or heat pump. You can usually find these at THESE PUBLISHERS: your local library or purchase them directly from the publisher. Be sure to consult current edition of each ACCA Air Conditioning Contractors of America standard. 1712 New Hampshire Avenue, NW Washington, DC 20009 Telephone: (202) 483-9370 Standard for the Installation .............. ANSI/NFPA 90A Fax:
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The MC4000 controller can be configured for alternative (lead/lag/lead/lag) sequence, which is default setting. It can be changed to non-alternating (lead/lead/lag/lag) ** IMPORTANT ** sequence as required for special applications or user preference. The equipment covered in this manual is to be installed by trained, experienced service and installation technicians. The MC4000 can be equipped with one of two alarm Please read entire manual before proceeding. boards, and these can be factory-ins
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TEMPERATURE SENSORS SPECIFICATIONS/FEATURES FOR BASIC CONTROLLER The standard (local) temperature sensor has 12" leads and MC4000 Basic Controller comes installed from the factory. •Input power: 18-32 VAC, 60/50Hz, power is supplied from A secondary sensor is located internally on the main A/C #1 and/or A/C #2 controller board and serves as a reference and back-up •Isolation circuitry: no line or low voltage phasing required sensor to the local sensor. Any differential of +/- 12F •Backup power:
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BASIC MC4000 CONTROLLER SPECIFICATIONS/FEATURES FOR INPUT/OUTPUT SPECIFICATIONS ALARM BOARDS MC4000-A w/Optional Base Alarm Board MC4000 CONTROLLER CONNECTIONS (Inputs/Outputs) Located on Main Controller Board Unit #1 C – 24VAC common 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. st Y1 – 1 -stage cool (Form A, NO) nd Y2 – 2 -stage cool (Form A, NO) Inputs W – heat (Form A, NO
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control to the “R” terminal on the blower control. The LOW VOLTAGE FIELD WIRING electronic blower control will now function as an on-off The MC4000 is powered from the air conditioners that it relay with no off-delay, and the blower motor will stop is controlling, 24 VAC (18-32V) low voltage only. running immediately when the F1-F2 fire suppression Circuitry in the MC4000 isolates the power supplies of circuit is activated (opened). the two air conditioners so that no back feeds or phasing prob
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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 controller. Controller will go dark and A/C units will stop. Comfort Button 1. 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. 2. Set Points will return
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HUMIDITY CONTROL OPTION COOLING OPERATING SEQUENCES FOR ALTERNATING LEAD/LAG/LEAD/LAG Note: This function is not available if controller is CONFIGURATION configured for heat pump. 1. 1-Stage Compressor Units No Economizer The standard air conditioning system can be adapted to st perform dehumidification control by addition of a 1 stage cooling set point is the setting (SP) input into simple humidity controller that closes-on-rise, and is the controller. Factory default is 77F (25C). On a call fo
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th nd 4 cooling set point is 2F (default setting, user selectable 2 cooling set point is 4F (default setting, user selectable 2- nd 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 – See the lag unit compressor will switch to compressor Stage 2 Blower Operation), and the Stage 2 LED will blink for 10- full capacity operation. s
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6. 2-Stage Compressor Units with Newer COOLING OPERATING SEQUENCES FOR ECONWMT Economizers (See Note A) NON-ALTERNATING LEAD/LEAD/LAG/ LAG CONFIGURATION st 1 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. Selecting Heat Pump = immediately (if not already on – See Blower Yes will override a Non-Alt
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rd th 3 cooling set point is 2F (default setting, user selectable 4 cooling set point is 2F (default setting, user selectable rd th 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 – See Blower Operation), and the Stage 3 activating the lag unit compressor. If the outdoor LED will blink for 10-seconds before going solid, and temperat
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5. 2-Stage Compressor Units with Newer HEATING SEQUENCE OF OPERATION ECONWMT Economizers (See Note A) Note: All heating sequences for air conditioners with st 1 stage cooling set point is the setting (SP) input into electric heat or heat pumps will automatically operate in the controller. Factory default is 77F (25C). On a call for Alternating Lead/Lag/Lead/Lag sequence even if cooling the blower of the lead unit will come on controller is set to Non-Alternating for cooling with or immediately
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For Vista or Windows 7: SPECIFICATIONS FOR OPTIONAL REMOTE COMMUNICATION BOARD 1. Open Control Panel, click Network & Internet. 2. Click Network & Sharing Center. CB4000 COMMUNICATION BOARD 3. Click Local Area Network link. Note: If this communication board was not originally 4. Click Properties. factory installed it can be field-installed at anytime. Bard 5. Highlight Internet Protocol Version 4 (TCP/ part number is CB4000. Either the –A or –B alarm board IPV4) and select Properties. is require
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USER PAGE 4. General Alarm Status: a. Fire/Smoke, Clear or Alarm 1. The designated Admin person can assign up to 9 b. Low Temp, Clear or Alarm additional users and set-up as Admin, Write or c. High Temp #1, Clear or Alarm Read authority. d. High Temp #2, Clear or Alarm 2. User Name and password must be assigned, each e. Controller Failure, Clear or Alarm must be at least 3 characters long, and are case sensitive. SETPOINTS PAGE (Note: “Read” level authority 3. Only “Admin” can add, change or
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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. of the lag air conditioning system. This is sometimes Units with economizers will connect differently than mandated if the generator size is not sufficient to handle units without ec
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TABLE 1 HOOK-UP DIAGRAM SELECTION TABLE — REFERENCE FIGURE 1 SHOWN Newer Older EIFM Newer Older EIFM ECONWMT MC4000-A or MC4000-B Economizer ECONWMT System Model No Economizer — No Economizer with Communication with CB4000 Economizer — No Type Series Economizer Communication with CB4000 Board – No Economizer Communication Communication Board Communication Board Board Board A/C with 1-Stage WA / WL 13 5 7 9 11 Compressor W**A / W**L A/C with 2-Stage W2 A*S / WL*S 4 6 8 12 0 1 Compressor WH / W**
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FIGURE 2 CONTROLLER CONNECTIONS 2-STAGE (WA*S/WL*S SERIES) AIR CONDITIONERS – NO ECONOMIZERS Manual 2100-563C Page 18 of 40
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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
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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
