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3D Connexion mD4000-b Dishwasher User Manual

1. 7 Low Voltage Field Wiring Circuitry in the 04000 2 2 2 7 Controller Grounding Earth ground 7 Controller Power Up Time Delay on 7 Fire Suppression Circuit Disabling the 4000 8 Staging Delay Periods Stages 1 94 eere 8 Blower Operation Various Blower 8 Advance Swap Lead Lag Unit Feature Manual Switching of 2 8 Accelerate Timer Feature Testing the Timer Function sees 8 General Programming Overview Buttons amp 9 Heating Sequence of Operation 10 Specifications Opt Remote Comm Board CB4000 Communications Board 11 12 Controller Wiring Refer to Connection 13 Security Locking Feature Locking and Unlocking the 04000 13 Generator Run Economizer Shutdown Feature Standby Generator Disable Operation 13 Backup DC Power Connection Input Connections Available 13 Manual 2100 574 Page 2 of 23 Economizer Failure Alarm 16 Dirty Filter Alarm meme 16 2 Compressor Run Alarm
2. 16 Alarm Wiring 2124 2 16 2nd Stage Cooling Alarm 17 Refrigerant Pressure Alarms 17 Spyder Economizer Displays 17 Emergency Ventilation Sequence 17 Programming Instructions 20 Figures 04000 Flow Chart 10 Figure 1 Controller Connections 1 Stage H A L Series wECONWMT Econ 14 Figure 2 Controller Connections 1 Stage H A L Series A C w ECONWMT Econ amp w Alarm Board amp 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 04000 21 Figure 5 Parts List Description Diagram 22 Tables Controller Prog Features amp Defaults 9 Table 1 Hook Up Diagram Selection 14 Table Parts LIST 2 eene Ies 23 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
3. VE REFRIGERANT PRESSURE LOCKOUT 11 FIRE SMOKE ALARM REQUIRES J CONTROL MODULE IN 11 ALARM CIRCUIT il ANC UNITS 1 GEN RUN ALARM CONTACTS ECON SHUTDOWN OPEN ON ALARM EXAM Sp I 4rnmg THE E AND CONNECTION FOR EMERGENCY iol d VENTILATION ARE AVAILABLE io ND GONTACTS 6 SMOKE boty E NC CONTACTS REMOVE _ _ 1 USE SHIELDED CABLE OR EQUIVALENT OPEN ON ALARM 2 RUNALARM JUMPER CONNECT SHIELD AT SPYDER ONLY EE OF REMOVE JUMPER AC UNIT 2 1 1 Qo E D 4 2 UNIT2 L 9 e ACRES NOTE ALL SENSORS ARE POLARITY SENSITIVE COPPER 9 LEAD MUST CONNECT TO LOCAL Qr eru MD4000 UNIT 2 CU AND SILVER MUST 9 UNIT2 lll oe J TERMINAL BLOCK LEAD TO AG COPPER SPYDER ECON zx ECONFAIL OPTIONAL FIELD INSTALLED REM 1 6 ca ORNE S ALARM NC 25 FOOT TEMPERATURE 69 1 SENSORS BARD PART r1 cl YELLOWRED NUMBER 8612 023 BROWNMHITE 2 LEM d 5 D 28 8LUEMHITE DIRTY FILTER G PURPLE 9 ALARM NC 8 E t YveLLowmwnire th ba OPTIONAL FIELD INSTALLED FuMIDITY vo YELLOW HUMIDITY CONTROLLER 1 6 BLUE CONTACTS CLOSE ONRISE J C 1
4. 2 and select Properties Change the addresses as follows hel e IP address 192 168 1 50 Subnet mask 255 255 255 0 Default gateway 192 168 1 1 Preferred DNS server 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 192 168 1 67 and hit Enter 9 The MD4000 log in page should appear LOG IN PAGE 1 in Admin for the user name and 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 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 t
5. Note 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 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 10 Emergency Vent Output to Economizer 4 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 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 10 Emergency Vent Output to Economizer 4 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 Ala
6. Available Cooling Calculate MAT Start Econ 1 Start Econ 2 Start Blower 2 Start Econ 1 Start Econ 2 Start Blower 2 Stop Econ 1 Stop Econ 2 Stop Blower 2 we Bd above or gt below 5 7 Yes No AL N asRT above SP 2 Yes Start Lead Compressor Start Lead Blower Is RT Below SP gt rs No No Above ALarn gt Setpoint 162 comp Allowed 74 N p Yes NO Yes Stop Lead Start Lag Compressor Compressor 2100 574 10 of 23 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 Ifeconomizers are used an additional 24V signal wire is required from each air conditioner to the controller system 4 Communication cable from CB4000 plugs into
7. BLACKWHITE CO jl RH REDMHITE oe ogee se doc erue et EIL 1 60 a dj o MIS 3092 A Manual 2100 574 Page 14 of 23 FIGURE 2 MD4000 BC CONTROLLER CONNECTIONS 1 STAGE H A H L SERIES AIR CONDITIONERS WITH ECONWMT ECONOMIZERS AND WITH ALARM BOARD amp CB4000 COMMUNICATION BOARD AC UNIT 1 a2 d M ERN e redo n Lus E it R REDMHITE BLACKWHITE C 5 No YELLOW HYELLOWWHITE 20 PURPLE 68 B8LUEWHITE 0 YELLOWRED 19 BROWNWHITE 9 ORANGE UNIT 1 SPYDER ECON REFRIGERANT PRESSURE LOCKOUT ALARM REQUIRES J CONTROL MODULE IN AIC UNITS THE E AND F CONNECTION FOR EMERGENCY VENTILATION ARE AVAILABLE USE SHIELDED CABLE OR EQUIVALENT CONNECT SHIELD AT SPYDER ONLY AC UNIT 2 Q lt cQ lo G 2 4 UNIT 2 Ll SPYDER ECON Tc CH ORANGE 8 30 YELLOW RED 7 10 ROWNMHITE 6 88 BLUEMMHITE 5 G PURPLE lt ON YELLOWMHITE A NO Y
8. FOR UNITS WITH ECONMIZERS O oN IN A C UNITS MAKE THIS CONNECTION MAKE THIS CONNECTION FOR NS FOR HIGH amp LOV PRESSURE EWEPGENCY VENTILATION STRATEGY a ob REFRIGERANT ALARM OOW 206 tour uml UO DOMI O 6 O 0 D 0 ND STAGE ecm EUN LOCKOUT SEE SECTION ON 2ND STAGE COOLING ALARM HIGH TEMP HIGH TEMP 2 CONTROLLER WO 0 D MOW POWER LOSS 2 LOW 00 POWER LOSS Ow SWOKE FIRE 00 0 USE SHADED TERMINALS FUR DESIGNATED ALARMS AS DESIRED SUME EVERSE ACTIVATED TO ACHIEVE NC OPEN ON ALARM SEQUENCE EACH CAN E USED INDIVIDUALLY TF THERE ARE ENDUCH BUILDING ALARM POINTS AVATLABLE OR CAN BE ARRAN UD SMALLER GROUPS OR EVEN A SINGLE GROUP SO THAT ALL ALARM CAPABILITIES CAN BE UTILIZED FOR NC CPEN ON ALARM STRATEGY MULTIPLE ALARMS IN A GROUP ARE WIRED IN SERIES POWER LOSS 17 Di 00 T WER LOSS 2 EXAMPLE 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 STRATEG
9. phone jack connection on main MD4000 controller board OPERATING SYSTEM No special software is required to access the system The 4000 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 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 address 192 168 1 50 Subnet mask 255 255 255 0 Default gateway 192 168 1 1 Preferred DNS server 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 192 168 1 67 and hit Enter 8 The MD4000 log in page should appear For Vista or Windows 7 Open Control Panel click Network amp Internet Click Network amp Sharing Center Click Local Area Network link Click Properties Highlight Internet Protocol Version 4 TCP
10. 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 1s 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
11. 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 2100 574 5 of 23 Manual Page BASIC MD4000 CONTROLLER INPUT OUTPUT SPECIFICATIONS MD4000 CONTROLLER CONNECTIONS Located on Main Controller Board Unit 1 C 24 common R 24VAC hot G fan Form A NO W heat Form A NO Unit 42 C 24 common 24VAC hot G fan Form A NO W heat Form A NO F1 F2 Fire smoke interface Shipped with jumper installed a Back up power input 24Vdc or 48Vdc 20V to 56V range Local Main sensor 12 inch leads CU copper AG silver Polarity sensitive Optional remote indoor sensor CU copper AG silver Polarity sensitive Optional remote indoor sensor CU copper AG silver Polarity sensitive 1 2 Humidity controller input Requires optional controller Field installed Advance Input used to remotely toggle lead lag change 48Vdc Rem 1 NOTE Sensors are solid state Rem 2 not RTD Use Bard sensors only a These connections require either jumper or Normally Closed NC relay contact at the Fire Smoke and Generator interface for Controller to function Note alarm and output relays are dry contacts rated 1A 24 VAC
12. Consult installation instructions for additional details 7961 762 Manual 2 Page 100 574 21 of 23 FIGURE 5 PARTS LIST DESCRIPTION DIAGRAM 19 000000000 e e e O ooo 0 y e e horo 4 0025929 JILIN SEXP 648 Manual 2100 574 22 of 23 Page Parts List e feos fomos x x _ s feor memes X x x _ fezo nemos X x x _ s mesa X x _ e mesa x x _ 77 feno erring X x _ e fso X x _ o sensor x x mee f ra x _ 7 feno foon 2 2 _ MO X X X X X X xX 0X Xx N X X X X X X XxX OX 2512 005 oomme x X was mm 2 mv Rm 3 3 2 2 __ mama Named 3 _ wee fre 2 2 __ wa fog e 2 _ _ oros 2 2 __ wes mme 2 2 __ _ Manual 2100 574 Page 23 of 23
13. FIRE SMOKE c oj CB4000 ALARM CIRCUIT Kl be SNe GEN RUN ALARM E CONTACTS i poa ne d ECON SHUTDOWN amp 9 OPEN ON ALARM EDEN L C4 4 4FRE 1 hod Wo NC CONTACTS Q REMOVE T 8 ISMOKE mae f OPEN ON ALARM MOT E E NC CONTACTS E 12 ES OM 2 COMP RUN ALARM 2 ra ae it OPEN ON ALARMA TERMINAL BLOCK 6 roy REMOVE 1 E Ee E JUMPER N bg 1 li Le 1 ques 1 mee em ciet des pud eget ce mE PRECOR V ree we o eR EU d B 1 Fog cee E dec UNT2 411 UU S W E ae eee wu RUE a NOTE ALL SENSORS ARE _ kel POLARITY SENSITIVE COPPER 1 LEAD MUST CONNECT TO Loca SANE E MD4000 UNIT 2 CU AND SILVER MUST amp G i siveR jM ISI A M T Ar 1 TERMINAL BLOCK LEAD TO AG mes COPPER OPTIONAL FIELD INSTALLED REM1 col E ALARM NC 25 FOOT TEMPERATURE i GG sweR 7 1 I SENSORS BARD PART EN T NUMBER 8612 023 69 aio m Com zg DIRTY FILTER z ALARM NC 1 d I OPTIONAL FIELD INSTALLED HUMIDITY d HUMIDITY CONTROLLER Oa n NO CONTACTS CLOSE ON RISE CONTROLLER D bd e bd x p A e Fo
14. controller 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 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 Manual 2100 574 Page 4 of 23 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 alarm actuations are individually indicated on the controll
15. 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 MD4000 B System Model Newer ECONWMT Economizer MD4000 BC Newer ECONWMT Economizer Type Series are with CB4000 Communication Board No
16. locked up but this also allows a manual remote reset as a backup before having a service call to the site LOG OUT BUTTON 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 CONNECT TO NETWORK l After initial set up using laptop computer disconnect computer cable from the Ethernet port and connect the CAT 5 or CAT 6 network cable Bo mon RESET BUTTON TO RETURN TO DEFAULT CONTROLLER SETTINGS 2 Remote access is now available using assigned 1 2 id a a P rm 2 P ADDRES MIN ioe aw wet ETHERNET PORT Manual 2100 574 Page 12 of 23 address and valid User Name and Password case sensitive 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
17. setpoint 65 to 90F or 18 3 to 32 2C Default is 77F 25C 70F to 120F or 21 1 to 48 8C Default is 90F 32 2C 5 ob Deadband between cooling and heating setpoint 16 HALE High temperature alarm Level 2 setpoint 70F to 120F or 21 1 to 49C Default is 95F 35C 2 to 40F or 1 1 to 22 2C Default is 27F 15C 1716582 N A See Operating Manua 6 cFf Continuous blower operation None Lead Both Default is LEAD 18 543 N A See Operating Manual Degree display For C Default is F 19 1544 N A See Operating Manual 8 ALT N A See Operating Manual 20 See Operating Manua 21 CSoF N A See Operating Manua 9 LLCO Lead Lag changeover time Days 22 HSoo Al Heating stages are equal amp Off differential 1 1 or 2 2 Default is 2 2 1 to 30 days or 0 for disabled Default is 7 23 CoPr N A See Operating Manual 10 N A See Operating Manual 24 Loco Controller is Locked Consult building authority for further instructions 11 CbdS Unit 1 and 2 blowers automatically both run if r1andr2 will display temperature only if optional remote sensors are installed delta T 5F between any 2 connected sensors If sensors are not installed these are omitted in the display sequence If r1 and or r2 sensor Yes or No Default is Yes installed the MC4000 will control to the average of the connected sensors
18. 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 a Average temperature if more than ones sensor used if not will read same as Local sensor b Local sensor at controller c Remote 1 or Remote 2 if connected CB4000 COMMUNICATION BOARD 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 Lock Unlock Controller Advance Lead to Lag Unit Comfort Mode Restore System Defaults Reset Controller There are built in routines to prevent the controller system from getting
19. Communication Board FIGURE 1 MD4000 B CONTROLLER CONNECTIONS 1 STAGE H A H L SERIES AIR CONDITIONERS WITH ECONWMT ECONOMIZERS AC UNIT 1 P PELDAT UESTRE RUE M NACE A pa cU dece E n 1 MD4000 UNIT 1 1 04000 TERMINALBLOCK 1 1 1 son ea DISPLAY1 DISPLAY2 a lee 8 LR Expl A 3l OH BLACKWHITE C BLUE NO YELLOW PELLOWMHIT A 11 Q9 PURPLE 4 DIRTY FILTER BLUENHITE KG ALARM NC 0 vELLOWIRED 19 MD4000 1 AH MAINBOARD 9 ORANGE ECON FAIL g UNT 1 ALARM NC 1 LLL _ 1 9 UNT NOTE DC BACK UP POWER 1 IS POLARITY SENSITIVE AND y gt B MUST BE CONNECTED AS SHOWN 48VDC OR CONTROLLER WILL NOT iie 1 d OPERATE ON DC POWER ONLY EI 4 p L Ox 9 i P E LOCKOUT ALARMI MM HQ 1 me I Pale dcs MNT LOCKOUT ALARMI E 19
20. ELLOW F gt 6 BLUE On C 8LACKWHITE C R 1 REDMWHITE 8 GF 9 rc EUR eT TP prr Rr 1 1 MD4000 UNIT 1 i MD4000 TERMINALBLOCK i 1 DISPLAY 1 DISPLAY 2 ple 1 r t 4 WHEN 0000 0009 ST SSG Cp ode Los E 1 e 1 uso rc fel geh de 4 FILTER E LG ALARM NC E 6 MD4000 1 MAIN BOARD it Fg ls d ORAE ECON FAIL k i 9 ALARM NC d 2 UNIT 1 PENEN SF fe E E NOTE DC BACK UP POWER IS POLARITY SENSITIVE AND oc Fg EE MUST BE CONNECTED AS SHOWN 48VDC 1 OR CONTROLLER WILL NOT Qu 11 OPERATE ON DC POWER ONLY OPTIONAL 1 48VDC 1 bg ps ME e E Pasadena arenaer e e 19 LOCKOUT ALARM Fd E m leni ug ESEMPIO C RE u GX 4 pol vir e BONETE qual LEDER PER EES RP A 5 1 ee ee m t i rot LOCKOUT ALARM MY Gig sige C 9 07 1 E ALARM 11 E BOARD
21. INSTALLATION INSTRUCTIONS amp REPLACEMENT PARTS LIST MD4000 SERIES SOLID STATE DUAL UNIT LEAD LAG CONTROLLER for use with H Series Wall Mount Air Conditioners with F amp G Spyder Economizers only f Bard Manufacturing Company Inc Manual No 2100 574 Bryan Ohio 43506 Supersedes NEW Since 1914 Moving ahead just as planned File Date 07 05 12 CLIMATE CONTROL SOLUTIONS Page 1 of 23 CONTENTS Getting Other Information and Publications 3 MD4000 General Information Shipping 4 Generali iiri 2 tecto Ended 4 Theory of 4 Controller 4 Specifications Features for MD4000 Series Controller MD4000 5 Mounting the Controller Installation 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 amp Unit 2 Terminal 6 Specifications Features for Alarm Boards MD4000 B amp BC w Controller Alarms
22. QUENCE 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 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 ALARM BOARD CONNECTIONS FUR NORMALLY CLOSED NC UPEN UN ALARM STRATEGY WE AL 2 ME ML 2 EN REQUIRES J CONTROL MODULE
23. Y ALARM BOARD CONNECTIONS FOR NORMALLY UPEN NU DPEN DN ALARM STRATEGI Cf MC He vt Hn MC 2 2AN OU pere sy CONTROL FOR UNITS WITH ECONOMIZERS 6 QG GGO ME THIS CIMECTIO MAKE THIS CONNECTION FOR ioi aa FIR HIGH E PRESSURE EMERGENCY VENTILATION STRATEGI d REFRIGERANT LY 0960 OO O O OO OG JE E KEP NL STAGE ECON ECIN 2 LOCKOUT 1 LOCKOUT 2 LOCKOUT LOCKOUT 2 e SEE SECTION ON 28D STAGE COOLING ALARM POWER LOSS 2 LOW TEMP HIGH TEMP 1 IGH TEMP 2 CONTROLLER 00 OW 49 040 40 0 00 WO SHOKE FIRE DOW POWER LOSS SS 6 CO 00 ME RELAYS ARE ACH CAN N gt SE SHADED TERMINALS FOR DESIGNATED ALARMS AS DESIRED 5 EVERSE ACTIVATED TO ACHIEVE NU CLUSE ON ALARM SEQUENCE BE USED INDIVIDUALLY IF THERE ARE ENDUGH BUILDING ALARM VATLABLE CAN BE ARRANGED INTO SMALLER GROUPS OR EVEN A STI GROUP SO THAT ALL ALARM CAPABILITIES CAN BE UTILIZED CLUSE DN ALARM STRATEGY MULTIPLE ALARMS IN A GROUP ARE WIRED IN P Zo TT Iur 1 Co 2 POWER LOSS POWER LOSS 2 00 n D 40 n 0 D b EXAMPLE HIS 3070 IMPORTANT LED display board is shipped loose to protect it from possible damage during installat
24. ave 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 Dirty Filter Economizer Fail Form A NC Form A NC 4 5 Input from Unit 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 act
25. d installation instructions The controller should be installed on a vertical wall approximately four 4 feet above the floor away from drafts amp 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 amp 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 appl
26. d using the Program button and Up or Down arrows but any attempt to change settings using the Change button will result is display showing 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 MD4000 CLIMATE CONTROL SOLUTIONS Solid State Dual Unit Lead Lag Controller See displays above Cooling 1st 2nd 3rd 4th Stage Stage oe se Heating Operating Instructions 1 To swap lead and lag units press ADVANCE 2 To enter the Program mode press the Program button and release it when Pro9 appears Use DOWN or UP arrows to scroll through menu 3 A Flashing display means that the function or choice is Set and the display will alternate between the step function and setting 4 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 5 When done programming press the Prog
27. elay 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 amp 3 and 3 amp 4 but no delayed output when stage is turned on or off and LED for those stages will not blink Manual 2100 574 Page 8 of 23 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 norma
28. er front panel There is an Ethernet based remote communication option that can be either factory or field installed See section on Communication Module 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 FC 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 SPECIFICATIONS FEATURES FOR MD4000 B CONTROLLER MD4000 Basic Controller Input power 18 32 VAC 60 50Hz power is supplied from 1 and or 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 amp alarm relay operation during commercial power outages Digital display 4 character LCD Temperature display F or C HVAC outputs Form A NO relay
29. hat 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 4 Type CB4000 in the browser s URL address bar to 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 2100 574 11 of 23 Manual Page USER PAGE 1 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
30. i MANC bg tf 1 4 bg bg b Ld E 1 Manual Page MIS 3093 2100 574 15 of 28 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 amp 9 must be connected to the shelter alarm panel A normally closed economizer fail alarm is available on terminals 8 amp 9 of the Unit 1 amp 2 terminal blocks DIRTY FILTER ALARM A normally closed dirty filter alarm is available on terminals 4 amp 5 of the Unit 1 amp 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 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 j we ps d A pepe DA OC P m A MIS 2042 N Q 2100 574 16 of 23 Manual Page ALARM WIRING Alarm relays can be wired for NO close on alar
31. ion 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 the default reset feature is also locked out All of the programmable features settings can be reviewe
32. ive 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 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 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 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 amp 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 d
33. l changeover time increments of days to be reduced to seconds Example 7 days becomes 7 seconds When 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 GENERAL PROGRAMMING OVERVIEW MD4000 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 1 2 1 2 3 4 Set Points will return to the programmed settings automatically after 1 hour Pressing the Comfort button during the 1 hour period will deactivate the Set Point change The temperature display will flash the current temperature while in override mode Program Button 1 2 Press the Program button and release it when the message Prog appears on the display Refer to Programming Instructions and follow these commands to change from Default settings Advance Change Save Button 1 2 3 4 5 6 Up and Press and release the Advance button to swap lead and lag unit positions When in Program mode the Down and Up buttons are used to scroll through the p
34. ling with or without economizers 1 Air Conditioners with Electric Heat 1 stage heating set point is the dead band db below the 1 stage cooling set point the SP entered into the program The dead band is adjustable from 2 40F and factory default is 27F Manual Page Spyder 1 is lead Signals Spyder2 MD4000 lt decides Lead unit 2 stage heating set point will operate at same inter stage differential as set for cooling mode MD4000 BCESDC MD4000 BESDC W AC UNITS W DC CONTROL ECONOMIZERS Spyder 2 is lead as lag 5 OAT suitable v Signals Spyder as Lag If OAT lt SP MTD and Enthalpy is below curve if equipped S for Cooling Yes J Load DE n Calculate adjusted building Load _ into account deviation from BL setpoint BL RT SP Airflow 1 2 Calculate Available Cooling AC for 1 econ Calculate MAT Start Econ 1 Stop Econ 2 Stop Blower 2 Determine Building No DC Amp load is read and converted to building load with the equation DCA 106 4 2455 BTUH MAT will be adjusted to take __ Available cooling SP MTD OAT 1 08 Airflow Calculate Available cooling for 2 econ Calculate MAT OAT Outdoor Air Temperature BL Building Load MDT Minimum Temperature Differential RT Room Temperature SP Setpoint AC
35. m 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 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 a
36. nd 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 10096 redundancy one air conditioning unit can handle 10096 of the load 10046 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 SE
37. ram button until display stops flashing and room temperature is shown If no buttons are pushed within 30 seconds the controller will automatically revert back to Run mode Comfort Mode Press Comfort button once to reset to 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 hour Program Menu NOTE Push and hold Up or Down arrows for 1 second until display blanks to move between steps Alarms Bos Alarm boards are optional uc and can be factory or field installed See inside of controller for alarm qs p p functions ni Power Loss Sys 1 Power Loss Sys 2 Refrig Alarm Sys 1 Refrig Alarm Sys 2 Fire Smoke Alarm Low Temp Alarm AB3000 A Alarm Board Functions High Temp Alarm 1 AB3000 B Alarm Board Functions High Temp Alarm 2 Lead Lag Controller Failure Alarm 14 9 emperature at local main Sensor N A See Operating Manual 2 r Temperature at Remote 1 sensor location 13 crun N A See Operating Manual 3 rg Temperature at Remote 2 sensor location 14 Low temperature alarm setpoint 28 to 65F or 21 1 to 48 8C Default is 45F 7 2C 4 SP Cooling setpoint temperature 15 HAL High temperature alarm Level 1
38. rm 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 amp BC CONTROLLER ALARMS Inputs Lockout 1 Lockout 2 Outputs Smoke Fire Lockout 1 Lockout 2 Power Loss 1 Power Loss 2 Low Temp High Temp 1 High Temp 2 Controller Econ 1 Econ 2 2 Stage 2 3 input from 1 2 3 input from HVAC 2 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 F Form A NO See note b F Form A NO See note b Form C SPDT 2 stage cooling alarm b Make these connections to terminals E amp F in HVAC 1 and 2 respectively if desired to h
39. rogramming steps 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 To change the setting press the Change button and the display will stop flashing allowing change to the setting Use Down or Up arrows to change setting as desired and press the Save button and proceed as desired When done with programming changes press the Program button until display stops flashing and room temperature is shown 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 pu Description Range Choice Default LSEn Temperature at local main sensor SP Cooling set point temperature 65 to 90F 18 to 32C 77F 25C db Deadband between cooling SP and heating set point 2 to 40F 1 to 24C 27F 15C ri Temperature at remote sensor 1 location if connected r2 Temperature at remote sensor 2 location if connected cFAn Continuous blower operation None Lead Both Lead deg Controller system operates in F or C ForC F Alt cau sequence or Non Alternating Lead Lead Lag Lag sequence Not Used Yes LLCO Lead Lag changeover time Days 1530 dn otar 7 HP eae only for 1 stage heat pumps and forces Lead Lag seq
40. s 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 eTiming accuracy 1 Inter stage time delay 10 seconds between stages On Off differential 2 1C is standard 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 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 amp Decrease set points Program Save Comfort MOUNTING THE CONTROLLER Included in the controller carton is the controller an
41. standard Standard for the Installation ANSI NFPA 90A of Air Conditioning and Ventilating Systems Standard for Warm Air Heating ANSI NFPA 90B and Air Conditioning Systems FOR MORE INFORMATION CONTACT THESE PUBLISHERS ACCA ANSI ASHRAE BARD Air Conditioning Contractors of America 1712 New Hampshire Avenue NW Washington DC 20009 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 American Society of Heating Refrigerating and Air Conditioning Engineers Inc 179 Tullie Circle N E Atlanta GA 30329 2305 Telephone 404 636 8400 Fax 404 321 5478 Bard Manufacturing Company Inc 1914 Randolph Drive Bryan OH 43506 Telephone 419 636 1194 Fax 419 636 2640 2100 574 3 of 23 Manual Page 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 These instructions explain the operation installation and troubleshooting of the MD4000 Series
42. uence Not Used No Cbd5 Unit 1 and 2 blowers automatically both run if delta T gt 5F between any 2 connected sensors Yes or No Yes OFde 3 minute lead unit amp 4 minute lag unit off delay enabled Not Used No crun Minimum 3 minute compressor runtime enabled Not Used No LoAL Low temperature alarm setpoint Not Used 45F 7 2C HAL1 High temperature alarm level 1 setpoint 70F to 120F 21 to 49C 90F 32C HAL2 High temperature alarm level 2 setpoint 70F to 120F 21 to 49C 95F 35C Locd Controller is locked and no changes can be made Consult building authority 2 id Unlocked Inter Stage Differential ISd2 From Stage 1 to Stage 2 Not Used 4 ISd3 From Stage 2 to Stage 3 Not Used 2 ISd4 From Stage 3 to Stage 4 Not Used 2 On Off Differential Hysterisis CSon Turn On above SP for Stage 1 Cooling Not Used 2 CSoF Turn Off below SP for Stage 1 Cooling Not Used 4 Stage 2 3 and 4 Cooling automatically set same as Stage 1 decisions HSoo All Heating Stages are equal on amp off differential 1 1 or 2 2 2 2 CoPr 1 or 2 stage compressor if set to 1 the 2nd stage Cooling Alarm activates on Cooling Call 2 Not Used 1 if set to 2 the 2nd stage Cooling Alarm activates on Cooling Call 3 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 coo
43. ying 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 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

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