INSTALLATION INSTRUCTIONS & replacement parts list MV4000 SERIES SOLID STATE DUAL UNIT LEAD/LAG CONTROLLER for use with H-Series Wall Mount Air Conditioners Bard Manufacturing Company, Inc. Bryan, Ohio 43506 Since 1914...Moving ahead, just as planned. Manual No.: Supersedes: File: Date: 2100-571A 2100-571 Vol.
CONTENTS Getting Other Information and Publications 3 MV4000 General Information Shipping Damage....................................................4 General....................................................................4 Theory of Operation.................................................4 Controller Certifications............................................4 Specifications/Features for MV4000 Series Controller MV4000 Controller...................................................
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.
** IMPORTANT ** The equipment covered in this manual is to be installed by trained, experienced service and installation technicians. Please read entire manual before proceeding. 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 The MV4000 is equipped with the B alarm board.
SPECIFICATIONS/FEATURES FOR mv4000-B CONTROLLER MV4000 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 -56V) maintains microprocessor operation, front panel indication & alarm relay operation during commercial power outages.
basic MV4000 CONTROLler input/output specifications MV4000 controller connections Located on Main Controller Board Unit #1 C – 24VAC common R – 24VAC hot G – fan (Form A, NO) Y1 – 1st-stage cool (Form A, NO) Y2 – 2nd-stage cool (Form A, NO) W – heat (Form A, NO) C – 24VAC common Unit #2 R – 24VAC hot G – fan (Form A, NO) Y1 – 1st-stage cool (Form A, NO) Y2 – 2nd-stage cool (Form A, NO) W – heat (Form A, NO) F1-F2 Fire/smoke interface Shipped with jumper installed (a) 48Vdc Back
SPECIFICATIONS/FEATURES FOR MV4000-B & -BC Controller ALARMS Inputs Lockout 1 Lockout 2 2, 3 – input from HVAC #1 2, 3 – input from HVAC #2 Outputs Form C (SPDT) Smoke/Fire Lockout 1 Form C (SPDT) Refrigerant alarm HVAC #1 Form C (SPDT) Lockout 2 Refrigerant alarm HVAC #2 Form C (SPDT) Power Loss 1 Power loss HVAC #1 Power Loss 2 Form C (SPDT) Power loss HVAC #2 Low Temp Form C (SPDT) Low temperature alarm High Temp 1 Form C (SPDT) High temperature alarm #1 High Temp 2 Form C (SPDT) H
fire suppression circuit blower operation To disable the MV4000 and shut down both air conditioners, terminals F1 and F2 may be used. The F1 and F2 terminals must be jumpered together for normal operation. A normally closed (nc) set of dry contacts may be connected across the terminals and the factory jumper removed for use with a field-installed fire suppression system. The contacts must open if a fire is detected. See appropriate connection diagram - Figures 1, 2 or 3 for this connection.
General Programming Overview MV4000 Controller Buttons and Function On/Off Button 1. 2. 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 1. 2. 3. 4. 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.
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 connected to terminals H1 and H2 on the main controller board. Recommended Bard Part #8403-038 (H600A 1014). Both HVAC units must be equipped with electric heat for this sequence to work properly.
3. 1-Stage Compressor Units with Newer ECONWMT Economizers (See Note A) 1st 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 on – See Blower Operation), and the Stage 1 LED will blink for 10-seconds before going solid, at which time the lead unit Y1 cooling output turns on.
2. 1-Stage Compressor Units with Newer ECONWMT Economizers (See Note A) 1st 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 on – See Blower Operation), and the Stage 1 LED will blink for 10-seconds before going solid, at which time the lead unit Y1 cooling output turns on.
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. It allows remote access via Ethernet, depending upon level of authority assigned, to all functions of the controller system the same as it one was in the building where the controller system is physically installed.
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 delete users and has access to all controller pages. 4.
controller wiring The MV4000 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; therefore, it is important to use the correct connection diagram. There are older style EIFM economizers and newer style ECONWMT economizers that the MV4000 controller system can work with, and also an option for a remote Ethernet communication board.
TABLE 1 HOOK-UP DIAGRAM SELECTION TABLE — REFERENCE FIGURE 1 SHOWN System Type Model Series MV4000-B No Economizer MV4000-BC with Communication Board – No Economizer MV4000-B Newer ECONWMT Economizer — No Communication Board MV4000-BC Newer ECONWMT Economizer with CB4000 Communication Board A/C with 1-Stage Compressor H**A / H**L 1 3 5 7 A/C with 2-Stage Compressor HA*S / HL*S 2 4 N/A N/A Figure 1 MV4000-B controller connections 1-stage (H**A/H**L series) air conditioners – no economizer
figure 2 MV4000-B controller connections 2-stage (Ha*S/HL*S series) air conditioners – no economizers AC UNIT 1 MV4000 MV4000 UNIT 1 TERMINAL BLOCK R R C C Y Y F F A A 4 4 5 5 6 6 DIRTY FILTER ALARM (NC) MV4000 MAIN BOARD 7 8 8 R 9 9 C W W Y1 Y1 Y2 Y2 G NOTE: DC BACK-UP POWER IS POLARITY SENSITIVE AND MUST BE CONNECTED AS SHOWN OR CONTROLLER WILL NOT OPERATE ON DC POWER ONLY E 2 3 10 1 UNIT 1 G 48VDC + _ OPTIONAL 48VDC E F 1 LOCKOUT ALARM 2 3 E 1 1 REFRIGERANT PRE
figure 3 MV4000-BC controller connections 1-stage (H**a/H**l series) air conditioners – no economizer WITH ALARM BOARD & CB4000 COMMUNICATION BOARD AC UNIT 1 MV4000 MV4000 UNIT 1 TERMINAL BLOCK R R C C Y Y F F A A 4 4 5 5 6 6 MV4000 MAIN BOARD 8 8 R 9 9 DIRTY FILTER ALARM (NC) 7 C W W Y1 Y1 Y2 Y2 G NOTE: DC BACK-UP POWER IS POLARITY SENSITIVE AND MUST BE CONNECTED AS SHOWN OR CONTROLLER WILL NOT OPERATE ON DC POWER ONLY E 2 3 10 1 UNIT 1 G 48VDC + _ OPTIONAL 48VDC E F
figure 4 MV4000-BC controller connections 2-stage (Ha*s/Hl*s series) air conditioners – no economizerS WITH ALARM BOARD & CB4000 COMMUNICATION BOARD AC UNIT 1 MV4000 MV4000 UNIT 1 TERMINAL BLOCK R R C C Y Y F F A A 4 4 5 5 6 6 DIRTY FILTER ALARM (NC) MV4000 MAIN BOARD 7 8 8 R 9 9 C W W Y1 Y1 Y2 Y2 G NOTE: DC BACK-UP POWER IS POLARITY SENSITIVE AND MUST BE CONNECTED AS SHOWN OR CONTROLLER WILL NOT OPERATE ON DC POWER ONLY E 2 3 10 1 UNIT 1 G 48VDC + _ OPTIONAL 48VDC E F
figure 5 MV4000-B controller connections 1-STAGE (H**a/H**l series) AIR CONDITIONERS WITH (econwmt) ECONOMIZERS AC UNIT 1 R RED R R C BLACK C C AUX2-I BLUE Y Y Y1-O YELLOW F F ECON YELLOW/WHITE A A Y1-I PURPLE 4 4 Y2-I PINK 5 5 OCC YELLOW/RED 6 6 AUX1-O BROWN/WHITE Y2-O MV4000 MV4000 UNIT 1 TERMINAL BLOCK DIRTY FILTER ALARM (NC) MV4000 MAIN BOARD 7 ORANGE UNIT 1 JADE ECON 8 8 9 9 R ECON FAIL ALARM (NC) C W W Y1 Y1 Y2 Y2 G NOTE: DC BACK-UP POWER IS POLARIT
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figure 7 MV4000-BC controller connections 1-STAGE (H**a/H**l series) AIR CONDITIONERS WITH (econwmt) ECONOMIZERS AND WITH ALARM BOARD & cb4000 COMMUNICATION BOARD AC UNIT 1 R RED R R C BLACK C C AUX2-I BLUE Y Y Y1-O YELLOW F F ECON YELLOW/WHITE A A Y1-I PURPLE 4 4 Y2-I PINK 5 5 OCC YELLOW/RED 6 6 AUX1-O BROWN/WHITE Y2-O MV4000 MV4000 UNIT 1 TERMINAL BLOCK DIRTY FILTER ALARM (NC) MV4000 MAIN BOARD 7 ORANGE UNIT 1 JADE ECON 8 8 9 9 R ECON FAIL ALARM (NC) C W W Y
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economizer failure alarm alarm wiring Upon failure of either economizer to open on command or close on command, the Economizer Failure Alarm will open normally closed contacts to signal the failure. To utilize this feature, terminals 8 & 9 must be connected to the shelter alarm panel. Alarm relays can be wired for NO (close on alarm) or NC (open on alarm) strategy. 2-compressor run alarm If both compressors are running at the same time, the 2-Compressor Run Alarm will open indicating this condition.
2nd stage cooling alarm EmergencY venTIlatioN sequence This alarm output is available for use if desired. It is important to note that in some installations, due to A/C system sizing and internal heat load, that the secondary (lag) air conditioning unit may be called upon to assist the lead air conditioner some of the time. If this is the case, or possibly when additional heat load is added, using the 2nd stage cooling alarm will cause nuisance alarm conditions.
Figure 9 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 sensitive and is keyed so it can only be installed in correct position.
figure 10 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 and is keyed so it can only be installed in correct position.
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. A FLASHING display means that the function or choice is “SET”, and the display will alternate between the step function and setting.
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figure 11 parts list description diagram 18 6 8 10 1 19 14 11 19 13 17 15 3 4 16 5 12 15 Manual 2100-571A Page 30 of 31 9 7 2 SEXP-638 A
Parts List Dwg. No. Part No.