INSTALLATION INSTRUCTIONS

& REpLACEMENT pARTS LIST

MD4000 SERIES SOLID STATE

DUAL UNIT LEAD/LAG CONTROLLER for use with H-Series

Wall Mount Air Conditioners with F & G Spyder™ Economizers only

Bard Manufacturing Company, Inc.

Bryan, Ohio 43506

Since 1914...Moving ahead, just as planned.

Manual No.: 2100-574

Supersedes: NEW

File: Vol. III Tab 19

Date: 07-05-12

Manual 2100-574

Page 1 of 23

CONTENTS

Getting Other Information and publications 3

MD4000 General Information

Shipping Damage....................................................4

General ...................................................................4

Theory of Operation ................................................4

Controller Certifications ...........................................4

Specifications/Features for MD4000 Series Controller

MD4000 Controller ..................................................5

Mounting the Controller

Installation Instructions............................................5

Temperature Sensors

Two Optional Sensor Inputs ....................................5

Temperature Sensor Logic

Using Multiple Sensors ...........................................5

Basic MD4000 Controller Input/Output Specs.

MD4000 Controller Connections .............................6

Located in the MD4000 panel Box

Unit #1 & Unit #2 Terminal Block .............................6

Specifications/Features for Alarm Boards

MD4000-B & -BC w/Controller Alarms ....................7

Low Voltage Field Wiring

Circuitry in the MD4000...........................................7

Controller Grounding

Earth ground ...........................................................7

Controller power-Up

Time Delay on Power-Up ........................................7

Fire Suppression Circuit

Disabling the MD4000 .............................................8

Staging Delay periods

Stages 1 - 4 .............................................................8

Blower Operation

Various Blower Options ...........................................8

Advance (Swap) Lead/Lag Unit Feature

Manual Switching of Units .......................................8

Accelerate Timer Feature

Testing the Timer Function ......................................8

General programming Overview

Buttons & Function ..................................................9

Heating Sequence of Operation ............................10

Specifications Opt. Remote Comm. Board

CB4000 Communications Board ......................11-12

Controller Wiring

Refer to Connection Diagram................................13

Security (Locking) Feature

Locking and Unlocking the MD4000 .....................13

Generator Run / Economizer Shutdown Feature

Standby Generator Disable Operation ..................13

Backup DC power Connection

Input Connections Available ..................................13

Economizer Failure Alarm .....................................16

Dirty Filter Alarm ....................................................16

2-Compressor Run Alarm ......................................16

Alarm Wiring ...........................................................16

2nd Stage Cooling Alarm .......................................17

Refrigerant pressure Alarms .................................17

Spyder Economizer Displays ................................17

Emergency Ventilation Sequence .........................17

programming Instructions .....................................20

Figures

— — — MD4000 Flow Chart ................................10

Figure 1 Controller Connections 1-Stage (H**A/L ....

Series) A/C w/ECONWMT Econ. .............14

Figure 2 Controller Connections 1-Stage (H**A/L ...

Series) A/C w/ ECONWMT Econ. & w/Alarm

Board & CB4000 Comm. Board .............15

— — — Alarm LED Display Board ........................16

Figure 3 Alarm Board Connections for Normally ......

Closed "NC" Open-On-Alarm Strategy ....18

Figure 4 Alarm Board Connections for Normally Open

"NO" Close-On-Alarm Strategy ................................19

— — — MD4000 Label .........................................21

Figure 5 Parts List Description Diagram ................22

Tables

Controller Prog. Features & Defaults ........9

Table 1 Hook-Up Diagram Selection ....................14

Table Parts List .................................................23

Manual 2100-574

Page 2 of 23

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 90A of Air Conditioning and

Ventilating Systems

FOr mOre InFOrmatIOn, cOntact these PublIshers:

ACCA Air Conditioning Contractors of America

1712 New Hampshire Avenue, NW

Washington, DC 20009

Standard for Warm Air Heating ......... ANSI/NFPA 90B and Air Conditioning Systems

ANSI

Telephone: (202) 483-9370

Fax: (202) 234-4721

American National Standards Institute

11 West Street, 13th Floor

New York, NY 10036

Telephone: (212) 642-4900

Fax: (212) 302-1286

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 2100-574

Page 3 of 23

** ImPOrtant **

The equipment covered in this manual is to be installed by trained, experienced service and installation technicians.

Please read entire manual before proceeding.

The MD4000 is equipped with the B alarm board.

Form C dry contact alarm relays are used, offering both NO and NC switching to meet the user’s specific alarm protocol, providing complete flexibility to meet any user's requirements. All alarm actuations are individually indicated on the controller front panel.

There is an Ethernet based remote communication option that can be either factory or field installed. See section on Communication Module.

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

These instructions explain the operation, installation and troubleshooting of the MD4000 Series controller.

All internal wiring is complete. Only attach low voltage field wiring to designated terminal strips.

The MD4000 is for use with units with economizers.

Each unit should be sized to handle the total load of the structure if 100% redundancy is required.

The MD4000 controller is suitable for both 50 and 60

HZ operation. See Controller Programmable Features and Default Settings.

theOrY OF OPeratIOn

The controller is used to control two wall mount air conditioners from one control system. It provides total redundancy for the structure and equal wear on both units. It must be used with units with economizers and both units be equipped alike.

The MD4000 controller is configured for alternative

(lead/lag/lead/lag) sequence, which is default setting.

The MD4000 works in conjunction with the Economizer

Logic Modules to provide room temperature control based on the DC amp load that the building is using.

The Economizer Logic Modules, in the air conditioner, control the cooling stages and functions. The MD4000 controls the heating stages, lead lag operation and alarming operation for the system.

cOntrOller certIFIcatIOns

The MD4000 main controller board, alarm board, optional communication module, and remote sensors have undergone extensive testing for immunity and emissions. This system is FCC-compliant, in accordance with CE requirements, and meets the following standards:

MD4000 Series

Master Controller

This device complies with FCC Rule Part 15, Subpart

B, Class A. Operation is subject to the following two conditions:

1. This device may not cause harmful interference

2. This device must accept any interference received, including that which may cause undesired operation.

This device complies with CE Standards EN55011/

EN50081 and EN55024 for ISM Equipment, Class A.

This ISM device also complies with Canadian ICES – 001.

Bard Manufacturing Company, Inc.

Bryan, OH 43506

Manual 2100-574

Page 4 of 23

sPecIFIcatIOns/Features FOr mD4000-b cOntrOller

MD4000 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.

•Digital display: 4-character LCD

•Temperature display: F or C

•HVAC outputs: Form A (NO) relays (1A @ 24 VAC)

•Cooling control stages:

2 for each A/C unit (4 total)

•Heating Control stages:

1 for each A/C unit

•Operating temperature range: 0 to 120F (-18 to 49C)

•Storage temperature range: -20 to 140F (-29 to 60C)

•Temperature accuracy: +/- 1F from 60-85F (16-30C)

+/- 1% outside 60-85F

•Lead/lag changeover time: 0 to 30 days

•Timing accuracy: +/- 1%

•Inter-stage time delay: 10 seconds between stages

•On-Off differential: 2F (1C) is standard, 4F (3C) when

“excessive cycling” mode is enabled

•Comfort setting, Heating 68F(20C), for 1 hour

•Dead band (difference between cooling and heating set points): 2F to 40F (1.1C to 22.2C)

•Fire/smoke interface: standard NC circuit jumper, remove for connection to building system control, shuts down both

A/C units immediately

•Memory: EEPROM for set point and changeable parameters (maintains settings on power loss)

•Space temperature sensors: 1 local is standard, will accept up to 2 optional 25' remote sensors, Bard part number 8612-023.

When multiple sensors are used, temperatures are averaged

•Controller Enclosure: 20-gauge pre-painted steel, 9.25"W x 20.875"H x 3.00"D, hinged cover, twenty four (24) .875" diameter electrical knockouts

•LEDs for basic controller: Lead unit, Heating Stages 1 – 4

•Six (6) Push-button controls: On/Off switch-Change lead unit-Increase & Decrease set points-Program/Save-Comfort.

mOuntInG the cOntrOller

Included in the controller carton is the controller and installation instructions.

The controller should be installed on a vertical wall approximately four (4) feet above the floor-away from drafts & outside doors or windows. Four (4) mounting holes are provided for mounting to the wall and 7/8" holes for conduit connections are provided in both the base, sides & top of the controller.

temPerature sensOrs

The standard (local) temperature sensor has 12" leads and comes installed from the factory.

A secondary sensor is located internally on the main controller board and serves as a reference and back-up sensor to the local sensor. Any differential of +/- 12F between the on-board and local sensor will cause the controller to use the local sensor as its point of reference.

If the differential is greater than 12F then the controller will check to determine the on-board sensor is reading a temperature that is between the SP (set-point) plus 12F and the SP minus the DB (dead-band) minus 12F. If it is the on-board sensor will become the valid sensor reading and the controller will ignore the local sensor reading. If it is not then the controller will still use the local sensor reading. This is to add additional level of operational capability in the rare event the local sensor fails. If the controller is operating in this mode it is indicated by the lower left decimal point flashing in the display. Note: for purposes of testing when the local sensor is manually driven higher or lower by applying warm or cool water to the probe the on-board sensor is inhibited for the first

30-minutes following power up, or when power is cycled off and back on.

The controller is designed to accept 1 or 2 additional sensors and those have 25-foot leads. The Bard part number for the optional sensor with 25-foot leads is

8612-023. These can be installed as required in the structure to address hot spots, barriers to airflow, etc.

It is recommended that the sensor lead wires be installed in conduit for protective purposes.

The highest reading of any connected sensor will be used for high temperature alarm and the lowest reading sensor will be used for low temperature alarm.

Note: All sensors are polarity sensitive. the copper lead must connect to terminal CU, and the silver lead to AG. Sensors are solid state, not RtD. Use only sensors supplied by Bard. Sensor leads can be extended up to 200 feet. Use 18-gauge twisted pair with soldered connections.

temPerature sensOr lOGIc

The standard local (LSEn) sensor monitors the temperature at the controller location. If this is the only sensor connected, it will control the temperature read-out, the space (building) temperature, and also be used for

Low and High Temperature alarm functions.

If one or more REMOtE sensors are installed and connected (Rem 1 or Rem 2), the temperature read-out will display and the building will be controlled to an

average of all connected sensors. If there is more than

10F difference from the highest to the lowest connected sensor, the actual control will be governed by the hottest sensor for cooling and the coldest sensor for heating.

If multiple temperature sensors are used, the High and

Low temperature alarms will be governed by the average of the connected sensors.

Manual 2100-574

Page 5 of 23

basIc mD4000 cOntrOller

InPut/OutPut sPecIFIcatIOns mD4000 cOntrOller cOnnectIOns

Located on Main Controller Board

Unit #1

Unit #2

C – 24VAC common

R – 24VAC hot

G – fan (Form A, NO)

W – heat (Form A, NO)

C – 24VAC common

R – 24VAC hot

G – fan (Form A, NO)

W – heat (Form A, NO)

F1-F2 Fire/smoke interface

Shipped with jumper installed (a)

48Vdc Back-up power input

-24Vdc or –48Vdc

-20V to –56V range

Local Main sensor, 12-inch leads

CU – copper, AG – silver

Polarity sensitive

Rem 1 Optional remote indoor sensor

CU – copper, AG – silver

Polarity sensitive

Rem 2 Optional remote indoor sensor

CU – copper, AG – silver

Polarity sensitive

H1-H2 Humidity controller input

NOTE:

Sensors are solid state, not RTD.

Use Bard sensors only.

Requires optional controller

Field installed

Advance Input used to remotely toggle lead/lag change

(a) These connections require either jumper or Normally

Closed (NC) relay contact at the Fire/Smoke and Generator interface for Controller to function.

Note: All alarm and output relays are dry contacts rated

1A @ 24 VAC.

Note: All alarm relay outputs have 10-second delay before issuing to protect against nuisance alarm signals.

lOcateD In the mD4000 Panel bOx

Unit #1 terminal Block

R – 24VAC hot from Unit

C – 24VAC common from Unit

Y – Compressor Signal to Unit

F – Economizer Shutdown Output to Economizer

A – Compressor Signal from Economizer

4 – Dirty Filter Alarm from Unit

5 – Dirty Filter Alarm from Unit

6 – Signal Common for F

8 – Economizer Fail from Unit

9 – Economizer Fail from Unit

41 – To Unit 2, 43

42 – To Unit 2, 44

43 – To Unit 2, 41

44 – To Unit 2, 42

45 – To Unit 2, 45 DCA Input

46 – To Unit 2, 46 DCA Input

47 – To Unit 1 Display

48 – To Unit 1 Display

Unit #2 terminal Block

R – 24VAC hot from Unit

C – 24VAC common from Unit

Y – Compressor Signal to Unit

F – Economizer Shutdown Output to Economizer

A – Compressor Signal from Economizer

4 – Dirty Filter Alarm from Unit

5 – Dirty Filter Alarm from Unit

6 – Signal Common for F

8 – Economizer Fail from Unit

9 – Economizer Fail from Unit

41 – To Unit 1, 43

42 – To Unit 1, 44

43 – To Unit 1, 41

44 – To Unit 1, 42

45 – To Unit 1, 45 DCA Input

46 – To Unit 1, 46 DCA Input

47 – To Unit 2 Display

48 – To Unit 2 Display

Gen Run/Econ Shutdown terminal Block(a)

Gen Run Input

Economizer Fail terminal Block

Alarm Output

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 are grouped together and issued as a single alarm there will be no off-site indication of which specific problem may have occurred, only that one of the alarms in the group has been triggered.

The individual alarm problem will be displayed on the LED display on face of the controller.

Manual 2100-574

Page 6 of 23

sPecIFIcatIOns/Features FOr mD4000-b & -bc cOntrOller alarms

Inputs

Lockout 1

Lockout 2

2, 3 – input from HVAC #1

2, 3 – input from HVAC #2

Outputs

Smoke/Fire

Lockout 1

Lockout 2

Power Loss 1

Power Loss 2

Low Temp

High Temp 1

High Temp 2

Controller

Form C (SPDT)

Form C (SPDT)

Refrigerant alarm HVAC #1

Form C (SPDT)

Refrigerant alarm HVAC #2

Form C (SPDT)

Power loss HVAC #1

Form C (SPDT)

Power loss HVAC #2

Form C (SPDT)

Low temperature alarm

Form C (SPDT)

High temperature alarm #1

Form C (SPDT)

High temperature alarm #2

Form C (SPDT)

Controller failure alarm

Econ 1

Econ 2

E, F - Form A (NO)

See note (b)

E, F - Form A (NO)

See note (b)

2 nd Stage (c) Form C (SPDT)

2 nd -stage cooling alarm

(b) Make these connections to terminals E & F in HVAC 1 and 2 respectively if desired to have economizers open for emergency ventilation at High Temp Alarm #2 setpoint

condition.

(c) For units with 2-stage compressors, 2nd stage cooling alarm activates on cooling Stage 3 initiation.

2nd Compressor Form A (NC)

Dirty Filter Form A (NC)

4, 5 – Input from Unit

Economizer Fail Form A (NC)

8, 9 – Input from Unit

lOW vOltaGe FIelD WIrInG

The MD4000 is powered from the air conditioners that it is controlling, 24 VAC (18-32V) low voltage only.

Circuitry in the MD4000 isolates the power supplies of the two air conditioners so that no back feeds or phasing problems can occur. Additionally, if one air conditioner loses power, the MD4000 and the other air conditioner are unaffected and will continue to operate normally.

Connect the low voltage field wiring from each unit per the low voltage field wiring diagrams in Section on

“Controller Wiring”. NOTE: Maximum of 18-gauge control wiring should be used. Using heavier gauge wiring can create excessive stress on the control board as door is opened and closed. Create a wiring loop so the door can open and close without stressing terminal blocks.

cOntrOller GrOunDInG

A reliable earth ground must be connected in addition to any grounding from conduit. Grounding lugs are supplied for this purpose.

cOntrOller POWer-uP

Whenever power is first applied to the controller, there is a twenty (20) second time-delay prior to any function

(other than display) becoming active. This time-delay is in effect if the controller On/Off button is used when

24VAC from air conditioners is present, and also if controller is in “ON” position and 24VAC from air conditioners is removed and then restored.

Manual 2100-574

Page 7 of 23

FIre suPPressIOn cIrcuIt

To disable the MD4000 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. Contacts should be rated for pilot duty operation at 2 amp 24VAC minimum.

Shielded wire (22-gauge minimum) must be used, and the shield must be grounded to the controller enclosure.

staGInG DelaY PerIODs

The following delays are built in for both cooling & heating:

Stage 1 – 0 seconds for blower (if not already on as

continuous)

10 seconds for cooling or heating output

Stage 2 – 10 seconds after Stage 1 for blower

10 additional seconds for cooling or heating

output

Stage 3 – 10 seconds after Stage 2

Stage 4 – 10 seconds after Stage 3

Note: For cooling Stages 1 and 2, the stage LED will blink for 10 seconds while the cooling output is delayed after that stage is called for. There is also a delay after the stage is satisfied, and after the LED stops blinking, the stage will turn off. There is a minimum 10-second delay between stages 2 & 3, and 3 & 4, but no delayed output when stage is turned on or off, and LED for those stages will not blink.

blOWer OPeratIOn

The controller can be configured to have main HVAC blowers cycle on and off on demand; have all blowers run continuously; or have the lead unit blower run continuously with the lag unit blower cycling on demand. Default setting is the blower on the lead unit operates continuously. There is also an option to have all blowers cycle on if one remote sensor is connected, and a temperature difference of more than 5F between any two sensors is observed. This helps to redistribute the heat load within the structure and should reduce compressor operating time.

When any of the stages are satisfied, the stage LED will blink for ten (10) seconds before the stage is actually turned off.

aDvance (sWaP) leaD/laG unIt

Feature

Pressing the Advance button for one (1) second will cause the lead and lag units to change positions.

This may be useful during service and maintenance procedures. This function can also be done remotely by closing a contact across the Advance terminals on the main board.

accelerate tImer Feature

Pressing the UP arrow button for five (5) seconds will activate an accelerate (speed-up) mode, causing the normal changeover time increments of days to be reduced to seconds. Example: 7 days becomes

7 seconds. When “ACC” displays, release button.

Whichever LED is on, indicating lead unit will blink over for each second until the controller switches. This is a check for the timer functionality.

Manual 2100-574

Page 8 of 23

General PrOGrammInG OvervIeW

mD4000 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 to the programmed settings automatically after 1 hour.

3. Pressing the Comfort button during the 1 hour period will deactivate the Set Point change.

4. The temperature display will flash the current temperature while in override mode.

Program Button

1. Press the Program button and release it when the message “Prog” appears on the display.

2. Refer to Programming Instructions and follow these commands to change from Default settings.

Advance/Change/Save Button

1. Press and release the Advance button to swap lead and lag unit positions.

2. When in Program mode the Down and Up buttons are used to scroll through the programming steps.

3. A flashing display means that the particular function of that programming step is “set”, and the display will alternate between the step function and the setting.

4. To change the setting press the Change button and the display will stop flashing, allowing change to the setting.

5. Use Down or Up arrows to change setting as desired, and press the Save button and proceed as desired.

6. When done with programming changes press the Program button until display stops flashing and room temperature is shown.

Up and Down Buttons

These buttons are used to change the settings in conjunction with the Advance/Change/Save button when in programming mode.

cOntrOller PrOGrammable Features anD DeFault settInGs

Order /

Display Description range / choice

LSEn Temperature at local (main) sensor —

SP db r1 r2 cFAn deg

Alt

Cooling set point temperature

Deadband between cooling SP and heating set point

Temperature at remote sensor 1 location, if connected

Temperature at remote sensor 2 location, if connected

Continuous blower operation

Controller system operates in F or C

Alternating Lead-Lag-Lead-Lag sequence or Non-Alternating Lead-Lead-Lag-Lag sequence —

Yes = Alternating

65 to 90F (18 to 32C)

2 to 40F (1 to 24C)

—

—

None, Lead, Both

F or C

Not Used

LLCO Lead-Lag changeover time (Days)

1 - 30 days, or 0 for disabled

HP

Cbd5

OFde crun

LoAL

HAL1

HAL2

Locd

Heat pump logic enabled — only for 1-stage heat pumps and forces Lead-Lag sequence

(overrides a Non-Alt setting)

Unit 1 and 2 blowers automatically both run if delta T >5F between any 2 connected sensors

3-minute lead unit & 4-minute lag unit off-delay enabled

Minimum 3-minute compressor runtime enabled

Low temperature alarm setpoint

High temperature alarm level #1 setpoint

High temperature alarm level #2 setpoint

Controller is locked and no changes can be made. Consult building authority.

Not Used

Yes or No

Not Used

Not Used

Not Used

70F to 120F (21 to 49C)

70F to 120F (21 to 49C)

If locked, display will show

Locd if changes attempted

Inter-Stage Differential

ISd2 From Stage 1 to Stage 2

ISd3 From Stage 2 to Stage 3

ISd4 From Stage 3 to Stage 4

On/Off Differential (Hysterisis)

CSon

CSoF

HSoo

CoPr

Turn "On" above SP for Stage 1 Cooling

Turn "Off" below SP for Stage 1 Cooling

Stage 2, 3 and 4 Cooling automatically set same as Stage 1 decisions

All Heating Stages are equal -/+ on & off differential

1 or 2-stage compressor, if set to 1 the 2nd stage Cooling Alarm activates on Cooling Call 2, if set to 2 the 2nd stage Cooling Alarm activates on Cooling Call 3

Not Used

Not Used

Not Used

Not Used

Not Used

-1/+1 or -2/+2

Not Used

Default

—

77F (25C)

27F (15C)

—

—

Lead

F

Yes

7

No

Yes

No

No

45F (7.2C)

90F (32C)

95F (35C)

Unlocked

4

2

2

2

-4

-2/+2

1

Manual 2100-574

Page 9 of 23

heatInG seQuence OF OPeratIOn

Note: All heating sequences for air conditioners with electric heat or heat pumps will automatically operate in Alternating Lead/Lag/Lead/Lag sequence even if controller is set to Non-Alternating for cooling with or without economizers.

Spyder 1 is lead

Signals Spyder2 as lag.

MD4000 decides Lead unit

1. Air Conditioners with Electric Heat

1 st stage heating set point is the dead-band (db) below the 1 st stage cooling set point (the SP entered into the program). The dead-band is adjustable from 2-40F, and factory default is 27F.

2 nd stage heating set point will operate at same inter stage differential as set for cooling mode.

Spyder 2 is lead

Signals Spyder1 as Lag

MD4000-BCESDC/MD4000-BESDC

W/ AC UNITS W/ DC CONTROL

ECONOMIZERS

If OAT <= SP-MTD and Enthalpy is below curve(if equipped

Is OAT suitable for Cooling

No

Yes

Determine Building

Load

DC Amp load is read and converted to building load with the equation DCA *

106.4-.2455 = BTUH

Calculate adjusted building Load

(BL)

MAT will be adjusted to take into account deviation from setpoint

BL+((RT-SP)*Airflow*1.2)

OAT = Outdoor Air Temperature

BL = Building Load

MDT = Minimum Temperature Differential

RT = Room Temperature

SP = Setpoint

AC = Available Cooling

Calculate

Available Cooling

(AC) for 1 econ

Available cooling =( SP-

MTD-OAT)*1.08*Airflow

If AC > BL

No

Yes

Calculate MAT

Start Econ 1

Stop Econ 2

Stop Blower 2

Calculate

Available cooling for 2 econ

If AC*2 > BL

No

Yes

Calculate MAT

Start Econ 1

Start Econ 2

Start Blower 2

Allow econ operation with

Compressor

No

Stop Econ 1

Stop Econ 2

Stop Blower 2

Yes

Calculate MAT

Start Econ 1

Start Econ 2

Start Blower 2

No Is RT above or below SP

Yes

No

Is RT above SP

Yes

Start Lead

Compressor

Start Lead Blower

Is RT

Below SP

Yes

No

Stop Lead

Compressor

Is 2 nd comp

Allowed

Yes

NO

Manual 2100-574

Page 10 of 23

Is RT

Above ALarn

Setpoint

Yes

No

Start Lag

Compressor

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.

Required Input Connections to the CB4000 (these are all internal connections from either the alarm board or main controller board):

1. Fire/smoke connection from MD4000 main controller board.

2. Refrigerant lockout inputs.

3. If economizers are used an additional 24V signal wire is required from each air conditioner to the controller system.

4. Communication cable from CB4000 plugs into phone jack connection on main MD4000 controller board.

OPERAtING SYStEM

No special software is required to access the system.

The CB4000 has a default address, simply follow these instructions: tO ACCESS tHE SYStEM

1. Connect CAT 5 or CAT 6 Ethernet cable from computer to Ethernet port on the CB4000.

2. Change your computer’s IP address as shown below to gain initial access to the CB4000.

NOTE 1: Record your computer’s current IP settings

BEFORE making any changes. You will need to reset back to these original settings once you’ve assigned an IP address to the CB4000.

For XP or Windows 2000:

1. Open Control Panel, double click Network

Connections.

2. Double click Local Area Connection on the

General tab and select Properties.

3. Using the General tab, scroll to Internet

Protocol (TCP/IP).

4. Highlight Internet Protocol (TCP/IP) and select

Properties.

5. Change the addresses as follows:

IP 192.168.1.50

Subnet mask: 255.255.255.0

Default gateway:

Preferred DNS server:

192.168.1.1

192.168.1.10

Alternate DNS server: 192.168.1.11

6. Click OK and close all windows.

7. Start your browser, enter the CB4000’s default IP address and hit Enter.

8. The MD4000 log-in page should appear.

For Vista or Windows 7:

1. Open Control Panel, click Network & Internet.

2. Click Network & Sharing Center.

3. Click Local Area Network link.

4. Click Properties.

5. Highlight Internet Protocol Version 4 (TCP/

IPV4) and select Properties.

6. Change the addresses as follows:

Subnet mask: 255.255.255.0

Default gateway:

Preferred DNS server:

192.168.1.1

192.168.1.10

Alternate DNS server: 192.168.1.11

7. Click OK and close all windows.

8. Start your browser, enter the CB4000’s default IP address and hit Enter.

9. The MD4000 log-in page should appear.

LOG IN PAGE

1. Type in “Admin” for the user name and “Bard” for the password. These are case sensitive. Hit “Log In”.

2. Click the “System Setup” button.

SYStEM SEtUP PAGE

Note: If the remote user is on a different subnet than the

CB4000 it is recommended that Static IP Addressing be used rather than DHCP.

IF YOUR NETWORK USES STATIC IP ADDRESSING

1. Enter the correct address information provided by your IT department and click the “Save Config” button.

2. The assumption is that the new IP address has already been configured into the network to get through any firewall(s).

3. Disconnect the Ethernet cable from the computer and plug into your router.

4. Change your computer system’s IP address back to their previous settings from Note 1.

5. Type the new IP address into the browser and make any changes to the MD4000 system before logging out.

IF YOUR NETWORK USES DHCP

1. Check the “Enable DHCP” box.

2. Click “Save Config” box (it will take several seconds before you receive a message that you are now offline. At this point the unit is now running in

DHCP mode).

3. Change your computer system’s IP address back to their previous settings from Note 1. access the CB4000.

NOTE 2: If you need to get back to the CB4000 default

IP setting simply hold the reset button next to the phone jack for 5+ seconds, then release.

Manual 2100-574

Page 11 of 23

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. “Write” can make changes to the controller settings and operating characteristics, and has access to only Log In, System Status, Setpoints, and Log Out pages.

5. “Read” can only view Status and Setpoints pages and cannot make any changes.

SYStEM StAtUS PAGE

1. This page shows the overall HVAC status of: a. Active cooling or heating stages or

dehumidification mode (requires humidity

sensor) b. Active controller outputs (blower, Stage 1 or

2, heating) to each air conditioner c. Which unit is the Lead unit d. Power loss or refrigerant lock-out for each air

conditioner e. If economizers are used, this will show if the

economizers are on or off.

2. General status of: a. Backup Generator Active or not (if tied to

generator run controls to inhibit lag unit

operation during generator run) b. Alarm board connected or not c. Controller system Locked or Unlocked d. Comfort mode Active or not

3. Temperatures: used, if not will read same as Local sensor) b. Local sensor at controller c. Remote 1 or Remote 2 if connected

4. General Alarm Status: a. Fire/Smoke, Clear or Alarm b. Low Temp, Clear or Alarm c. High Temp #1, Clear or Alarm d. High Temp #2, Clear or Alarm e. Controller Failure, Clear or Alarm

SEtPOINtS PAGE (Note: “Read” level authority can view this screen but cannot make any changes.

“Admin” and “Write” authority can make changes)

1. General Setpoints a. On initial installation and start-up all selectable characteristics are set to factory default

settings. b. Each of these points has a drop-down menu for ease of use.

2. Alarm Board Setpoints a. Low temperature alarm setpoint b. High temperature alarm #1 setpoint c. High temperature alarm #2 setpoint

3. System Overrides a. System 1 Heating Override b. System 2 Heating Override c. Turn Power On to the System (Note: Cannot

remotely turn the controller system Off) d. Lock/Unlock Controller e. Advance Lead to Lag Unit f. Comfort Mode g. Restore System Defaults h. Reset Controller. There are built-in routines to

prevent the controller system from getting

“locked up”, but this also allows a manual

remote reset as a backup before having a

service call to the site.

LOG OUt BUttON

1. Clicking this button will automatically log you off the controller remote access.

2. To log back in will require entering assigned IP address into your browser and entering valid

User Name and Password.

cb4000 cOmmunIcatIOn bOarD

CONNECt tO NEtWORk

1. After initial set-up using laptop computer, disconnect computer cable from the Ethernet port and connect the CAT 5 or CAT 6 network cable.

RESET BUTTON TO RETURN TO DEFAULT CONTROLLER SETTINgS



2. Remote access is now available using the assigned

IP address and valid User Name and Password

(case sensitive).

Manual 2100-574

Page 12 of 23



ETHERNET PORT



PHONE jACk

CONNECTION

TO MAIN

CONTROLLER

BOARD



IP DEFAULT ADDRESS RESET

cOntrOller WIrInG

The MD4000 can be used for controlling two (2) air conditioners with economizers.

securItY (lOckInG) Feature

The MD4000 controller can be locked such that unauthorized persons cannot make any changes to temperature set points or any other selectable parameters of the controller system.

The ON/OFF and Comfort buttons remain fully active for their normal intent. The Advance/Change/

Save button remains active for the Advance feature only, which allows the position of the lead and lag air conditioners to be swapped (reversed). The Program button remains partially active - allowing the review of temperature sensor(s) actual reading of temperature, and the current settings/choices that have been chosen.

However, no changes can be made when the controller is locked, and if the change button is pressed when in the Program mode, the display will come up showing

“Locd” instead of flashing the selectable choices for that parameter. The default (DEF) reset capability is also disabled when the controller is in locked mode.

Locking and Unlocking the MD4000 Controller:

1. Locking the controller requires using 3 buttons

while the controller is in the normal operating (run)

mode.

2. Press and hold the Advance/Change/Save button

and the Up and Down arrow buttons simultaneously

for 20 seconds until the display shows “Locd”.

3. To unlock the controller, press the Change, Up and

Down arrow buttons simultaneously for 20 seconds

until the display reads “uLoc”.

GeneratOr run / ecOnOmIzer shutDOWn Feature

If desired, the MD4000 controller can be signaled from a standby generator system to lockout (disable operation of the) lag air conditioning system and close economizers if active. This is sometimes mandated if the generator size is not sufficient to handle the building load (amperage) and that of both air conditioning systems.

A normally closed (NC) dry contact as part of generator controls is required. These contacts must open when the generator is started, and such action will signal the

MD4000 controller to this condition and disable lag air conditioner run function and close economizers if active.

A wire jumper is factory-installed across the Generator

Run / Economizer Shutdown terminals. To utilize the generator run feature, remove the jumper from

Generator Run / Economizer Shutdown, and connect the generator normally closed (NC) contacts that will open-on-run generator condition to the Generator Run /

Economizer Shutdown terminals.

backuP Dc POWer cOnnectIOn

There are input connections available for -24VDC or

-48VDC (-20 to -56V) backup power connection. Making this connection will maintain microprocessor operation, front panel display, LED signaling, and alarm relay operation during periods of commercial power outages and when no standby generator is available. This circuit is protected by a replaceable .5A (500mA) 250V fuse.

IMPORtANt: The shelter DC battery power must be connected to the controller and wired as shown in controller wiring diagrams.

The backup DC power connection is polarity sensitive. If polarity is reversed, the controller will not function on backup power, no display and no alarm functions will be evident.

Manual 2100-574

Page 13 of 23

table 1 hOOk-uP DIaGram selectIOn table — reFerence FIGure 1 shOWn system type model series

A/C with 1-Stage Compressor H**A / H**L mD4000-b newer ecOnWmt economizer — no communication board

1 mD4000-bc newer ecOnWmt economizer with cb4000 communication board

2

AC UNIT 1

45

44

43

42

41

4

48

47

46

R

C

27

NO

9

26

RED/WHITE

BLACK/WHITE

BLUE

YELLOW

YELLOW/WHITE

PURPLE

28

30

10

15

UNIT 1

SPYDER ECON

BLUE/WHITE

YELLOW/RED

BROWN/WHITE

ORANGE

1

REFRIGERANT PRESSURE LOCKOUT

ALARM - REQUIRES "J" CONTROL MODULE IN

A/C UNITS

2 THE "E" AND "F" CONNECTION FOR EMERGENCY

VENTILATION ARE AVAILABLE

3 USE SHIELDED CABLE OR EQUIVALENT.

CONNECT SHIELD AT SPYDER ONLY

AC UNIT 2

UNIT 2

SPYDER ECON

15

30

ORANGE

YELLOW/RED

BROWN/WHITE 10

28

26

9

NO

27

C

R

41

BLUE/WHITE

PURPLE

YELLOW/WHITE

YELLOW

BLUE

BLACK/WHITE

RED/WHITE

42

43

44

45

46

47

48

4

A

F

Y

C

R

8

7

6

5

4

Y2

Y1

W

9

2

3

10

G

1

E

3

Manual 2100-574

Page 14 of 23

Y

F

A

R

C

4

5

6

7

8

9

Y2

G

E

W

Y1

2

3

10

1

FIGure 1 mD4000-b cOntrOller cOnnectIOns

1-staGe (h**a/h**l serIes) aIr cOnDItIOners

WIth (ecOnWmt) ecOnOmIzers

3

NC CONTACTS

OPEN ON ALARM

NC CONTACTS

OPEN ON ALARM

MD4000 UNIT 1

TERMINAL BLOCK

46

45

44

43

42

41

F

A

4

5

6

R

C

Y

DIRTY FILTER

ALARM (NC)

8

9

ECON FAIL

ALARM (NC)

1

DISPLAY 1

2 3 4 1

DISPLAY 2

2

MD4000

3 4

MD4000

MAIN BOARD

48VDC

W

Y1

Y2

G

R

C

+

_

NOTE: DC BACK-UP POWER

IS POLARITY SENSITIVE AND

MUST BE CONNECTED AS SHOWN

OR CONTROLLER WILL NOT

OPERATE ON DC POWER ONLY

1

LOCKOUT ALARM

1

LOCKOUT ALARM

2

E

F

2

3

E

F

2

3

ALARM

BOARD

GEN RUN ALARM/

ECON SHUTDOWN

FIRE/SMOKE

ALARM CIRCUIT

"NC" CONTACTS -

OPEN ON ALARM

UNIT 1

OPTIONAL

48VDC

FIRE/

SMOKE

2 COMP RUN ALARM

TERMINAL BLOCK

REMOVE

JUMPER

REMOVE

JUMPER

F1

F2

MD4000 UNIT 2

TERMINAL BLOCK

9

8

ECON FAIL

ALARM (NC)

NOTE: ALL SENSORS ARE

POLARITY SENSITIVE. COPPER

LEAD MUST CONNECT TO

CU, AND SILVER MUST

LEAD TO AG

OPTIONAL FIELD INSTALLED

25 FOOT TEMPERATURE

SENSORS, BARD PART

NUMBER 8612-023

R

41

42

43

44

45

46

F

Y

A

4

C

6

5 DIRTY FILTER

ALARM (NC)

OPTIONAL FIELD INSTALLED

HUMIDITY CONTROLLER

"NO" CONTACTS - CLOSE ON RISE

REM 1

REM 2

CU

AG

CU

AG

G2

G1

HUMIDITY

CONTROLLER

H1

H2

ADVANCE

R

G

Y2

Y1

W

C

LOCAL

CU

AG

UNIT 2

COPPER

SILVER

COPPER

SILVER

COPPER

SILVER

MIS-3092 A

AC UNIT 1

4

48

47

46

45

44

43

42

41

C

R

27

NO

9

26

28

30

RED/WHITE

BLACK/WHITE

BLUE

YELLOW

YELLOW/WHITE

PURPLE

BLUE/WHITE

YELLOW/RED

10

15

UNIT 1

SPYDER ECON

BROWN/WHITE

ORANGE

FIGure 2 mD4000-bc cOntrOller cOnnectIOns

1-staGe (h**a/h**l serIes) aIr cOnDItIOners

WIth (ecOnWmt) ecOnOmIzers anD WIth alarm bOarD & cb4000 cOmmunIcatIOn bOarD

3

1

REFRIGERANT PRESSURE LOCKOUT

ALARM - REQUIRES "J" CONTROL MODULE IN

A/C UNITS

2 THE "E" AND "F" CONNECTION FOR EMERGENCY

VENTILATION ARE AVAILABLE

3 USE SHIELDED CABLE OR EQUIVALENT.

CONNECT SHIELD AT SPYDER ONLY

AC UNIT 2

UNIT 2

SPYDER ECON

15

30

10

28

26

9

NO

27

ORANGE

YELLOW/RED

BROWN/WHITE

BLUE/WHITE

PURPLE

YELLOW/WHITE

YELLOW

C

R

41

BLUE

BLACK/WHITE

RED/WHITE

42

43

44

45

46

47

48

4

E

2

1

3

10

G

Y2

9

8

Y1

W

Y

C

A

F

R

5

6

4

7

3

F

A

4

5

8

7

6

9

R

C

Y

W

Y1

Y2

G

2

E

3

10

1

MD4000 UNIT 1

TERMINAL BLOCK

F

A

C

Y

42

41

R

5

4

6

46

45

44

43

DIRTY FILTER

ALARM (NC)

DISPLAY 1

1 2 3 4 1

MD4000

DISPLAY 2

2 3 4

MD4000

MAIN BOARD

9

8

ECON FAIL

ALARM (NC)

W

Y1

Y2

G

R

C

+

_

UNIT 1

NOTE: DC BACK-UP POWER

IS POLARITY SENSITIVE AND

MUST BE CONNECTED AS SHOWN

OR CONTROLLER WILL NOT

OPERATE ON DC POWER ONLY

48VDC

OPTIONAL

48VDC

NC CONTACTS

OPEN ON ALARM

NC CONTACTS

OPEN ON ALARM

1

LOCKOUT ALARM

1

LOCKOUT ALARM

GEN RUN ALARM/

ECON SHUTDOWN

2 COMP RUN ALARM

TERMINAL BLOCK

REMOVE

JUMPER

2

E

F

3

2

E

F

3

2

ALARM

BOARD

CB4000

NO

C

NC

1-3

2-3

3-3

1

2

3

FIRE/SMOKE

ALARM CIRCUIT

"NC" CONTACTS -

OPEN ON ALARM

REMOVE

JUMPER

F1

F2

41

42

43

44

45

46

F

Y

4

A

C

R

MD4000 UNIT 2

TERMINAL BLOCK

8

9

ECON FAIL

ALARM (NC)

NOTE: ALL SENSORS ARE

POLARITY SENSITIVE. COPPER

LEAD MUST CONNECT TO

CU, AND SILVER MUST

LEAD TO AG

OPTIONAL FIELD INSTALLED

25 FOOT TEMPERATURE

SENSORS, BARD PART

NUMBER 8612-023

5

6

DIRTY FILTER

ALARM (NC)

OPTIONAL FIELD INSTALLED

HUMIDITY CONTROLLER

"NO" CONTACTS - CLOSE ON RISE

REM 1

REM 2

CU

AG

CU

AG

G2

G1

HUMIDITY H1

CONTROLLER H2

ADVANCE

Y1

W

C

R

G

Y2

LOCAL

CU

AG

FIRE/

SMOKE

UNIT 2

COPPER

SILVER

COPPER

SILVER

COPPER

SILVER

MIS-3093

Manual 2100-574

Page 15 of 23

ecOnOmIzer FaIlure alarm

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.

A normally closed economizer fail alarm is available on terminals 8 & 9 of the Unit 1 & 2 terminal blocks.

DIrtY FIlter alarm

A normally closed dirty filter alarm is available on terminals 4 & 5 of the Unit 1 & 2 terminal blocks.

2-cOmPressOr run alarm

If both compressors are running at the same time, the

2-Compressor Run Alarm will open indicating this condition.

Note: the alarm LeD display board is shipped uninstalled 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.

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 are grouped together and issued as a single alarm, there will no off-site indication of which specific problem may have occurred, only that one of the alarms in the group has been triggered. The individual alarm problem will be shown on the LED display on the face of the controller.

Note: All alarm and output relays are Form C (SPDT) dry contacts rated 1A @ 24 VAC.

Note: All alarm relay outputs have 10-second delay in acutally issuing to protect against nuisance alarm signals.

The Power Loss 1, Power Loss 2 and controller alarm relays are all “reverse actuated”, which means they are continuously energized (the NO contact is closed) and switched to NC position upon alarm condition.

Therefore, it is important to closely follow the alarm board connection diagrams that follow.

Any alarm feature that is not desired can simply be ignored (not connected).

NOtE: the LED display board can be replaced if needed independently of the alarm board. Bard part number is 8612-022.

alarm leD DIsPlaY bOarD

Manual 2100-574

Page 16 of 23



MIS-2042

Note: The LED display board is polarized and will only fit in one direction as shown. It must be fully inserted in order for the controller to function properly.

2nD staGe cOOlInG alarm

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.

Note: For units with 2-stage compressors, the dual stage cooling alarm activates on cooling Stage 3 initiation. Menu Step 23, CoPr, must be set to “2” for this to occur, otherwise alarm will activate on cooling call Stage 2 causing nuisance alarm.

For installations where it is known that there is 100% redundancy (one air conditioning unit can handle 100% of the load 100% of the time) use of the 2nd Stage Cooling

Alarm is a method to issue an alarm signal that the lead air conditioner is down (or not delivering full capacity) and that the lag air conditioner is now operating.

reFrIGerant Pressure alarms

Air conditioners with “J” control module are equipped with an alarm relay that is activated upon high or low refrigerant pressure lockout conditions. Connecting terminals 2 and 3 from the air conditioner 24V terminal block to the matching terminals 2 and 3 on the alarm board will allow these alarms to function.

sPYDer ecOnOmIzer DIsPlaYs

The two (2) displays on the front of the MD4000 are for remotely monitoring and programming the 100% fresh air Spyder economizers in the units. See Instruction

Manual 2100-576 for details.

emerGencY ventIlatIOn seQuence

For units with economizers, there are two (2) emergency ventilation sequences designed into the controller. Both require the -B alarm board and connection of terminals E and F from the air conditioner

24V terminal block to the matching terminals on the alarm board.

Note: The E and F wiring connections at the 24V terminal block in the A/C units are different for older style EIFM economizers than for newer style

ECONWMT economizers. Refer to the appropriate

Controller Connection diagrams - See Table 1.

Sequence one requires a refrigerant pressure alarm, coupled with high temperature alarm condition No. 1

(HAL 1 set point). If both of these conditions occur, the economizer in the air conditioner that issued the refrigerant alarm will drive open to ventilate the building.

Sequence two (HAL 2 set point) is activated by high temperature alarm No. 2, and will initiate even without a refrigerant pressure alarm signal. Both economizers will be activated to provide emergency ventilation.

This strategy help protect against building overheating if air conditioner(s) are inoperative for non-pressure related reasons (bad compressor, contactor, run capacitor, etc.).

Manual 2100-574

Page 17 of 23

FIGure 3 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.

Manual 2100-574

Page 18 of 23

FIGure 4 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.

Manual 2100-574

Page 19 of 23

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.

To change the setting of any step, press the CHANGE button and the display will stop flashing, allowing change to the setting by using the DOWN or UP arrows. When desired setting is reached, press the

SAVE button, and proceed as desired. When done with programming changes, press the PROGRAM button until display stops flashing and room temperature display is shown. If no buttons are pushed within thirty

(30) seconds, the controller will automatically revert back to “RUN” mode.

To reset all controller settings to the factory default values, press the PROGRAM button for 10 seconds until display reads dEF.

NOTE: When the controller has the security locking feature enabled, no changes to any selectable features can be made, and the default reset feature is also locked out. All of the programmable features/settings can be reviewed using the Program button and Up or Down arrows, but any attempt to change settings using the Change button will result is display showing “Locd” indicating controller is locked. See section on Security (Locking) Feature.

See next page for Programmable Features, Default Settings and MD4000 front panel label layout.

Note: When using the controller buttons to review settings or making changes, push and hold the buttons for approximately 1 second or until the display changes.

Quickly pushing or jabbing the buttons will not allow the controller to respond.

Manual 2100-574

Page 20 of 23

See displays above

D trans red window adhesive die emboss die cut

Material: 10 mil HP92WP lexan

Adhesive: 7952MP

Premask: 4075

Colors: black, spot white, trans red,

spot frosted clear

N/A - See Operating Manual

LEAD

27F/15C

N/A - See Operating Manual

N/A - See Operating Manual

N/A - See Operating Manual

N/A - See Operating Manual

N/A - See Operating Manual

N/A - See Operating Manual

N/A - See Operating Manual

N/A - See Operating Manual

N/A - See Operating Manual

7961-762

8.5” h

Manual 2100-574

Page 21 of 23

11”

6

18

10

FIGure 5

Parts lIst DescrIPtIOn DIaGram

20

8

Manual 2100-574

Page 22 of 23

14

13

17

15

5

12

4

3

19

9

1

7

11

2

SEXP-648

Parts List

Dwg.

no.

13

14

15

16

9

10

11

12

17

18

19

20

7

8

5

6

3

4

1

2

Part no.

127-423-4

8612-038

8612-021

8612-022

113-456-4

152-515-4

8611-099

5400-002

8612-023

7961-762

8611-006

8612-035

8201-015

8201-071

8607-030

113-461-4

8201-062

8611-094

8607-033

8301-043

Description

Control Box

Controller Board

Alarm Board B

Alarm Display

Support Bracket

Control Box Door

LTF Fitting

Hinge

Sensor

Label/keypad ground Lug

Communication Board

Relay

Relay

Terminal Block

Alarm Bracket

Relay

Light

Terminal Block

Display

2

2

2

2

2

1

2

3 mD4000-b mD4000-bc ab3000-b

X

X

X

X

X

X

X

X

X

X

2

X

X

2

2

2

2

X

X

X

X

X

X

X

X

2

1

2

3

2

X

X

X cb4000

X

Manual 2100-574

Page 23 of 23