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INSTALLATION

1. Connect the positive lead to terminal

1

(MODBUS B +) of connector Y2.

2. Connect the negative lead to terminal

2

(MODBUS A -) of connector Y2.

3. DO NOT terminate the shields at the Boiler end of the RS485 loop. Connect the shields of the

incoming and outgoing leads together. The RS485 loop shield should only be terminated at the BMS
II.

4. The last BCM in the daisy-chain must have the termination jumper engaged as shown in Figure 2-9.

5. The BMS II bias switches must be activated.

Y2

Y3

Y4

Y1

SW1

A1

I

0

BCM FRONT VIEW

7 6 5 4 3 2 1

Y2

JP2

JP1

T

C

V

JUMPER

SHOWN IN

“TERMINATED”

(UP) POSITION

Figure 2-9. RS485 (Modbus) Wiring For Modulex Series Boilers

2.8 SAMPLE RS485 (MODBUS) NETWORK DIAGRAMS

Figure 2-10 shows a sample RS485 (Modbus) Network diagram with the BMS II connected to KC1000 or
Benchmark Series Boilers equipped with C-More Control Systems. Figure 2-11 shows a similar sample
diagram with the BMS II connected to Modulex Series Boilers equipped with BCMs and E8 Controllers.

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Содержание BOILER MANAGEMENT SYSTEM II 5R5-384

Страница 1: ...JANUARY 2009 Instruction No GF 124 AERCO INTERNATIONAL Inc Northvale New Jersey 07647 USA Installation Operation Maintenance Instructions BMS II BOILER MANAGEMENT SYSTEM ...

Страница 2: ...tional Inc 159 Paris Avenue Northvale NJ 07647 0128 AERCO makes no warranty of any kind with respect to this material including but not limited to implied warranties of merchantability and fitness for a particular application AERCO International is not liable for errors appearing in this manual Nor for incidental or consequential damages occurring in connection with the furnishing performance or u...

Страница 3: ...viations and acronyms used in this document are listed in the following table Phrases Abbreviations and Acronyms Phrase Abbreviation or Acronym Meaning A Amp Ampere ADDR Address ALRM Alarm AUX Auxiliary BAS Building Automation System often used interchangeably with EMS see below Baud Rate Symbol rate or simply the number of distinct symbol changes signaling events transmitted per second It is not ...

Страница 4: ...y over RS232 networks REF Ref Reference Response Time The maximum amount of time allowed to receive a response to a request RS232 or EIA 232 A standard for serial full duplex FDX transmission of data based on the RS232 Standard RS422 or EIA 422 A standard for serial full duplex FDX transmission of data based on the RS422 Standard RS485 or EIA 485 A standard for serial half duplex HDX transmission ...

Страница 5: ...SENSOR INSTALLATION AND WIRING 2 5 Header Sensor 2 5 Return Sensor 2 5 Outdoor Air Sensor 2 6 2 6 RS485 MODBUS WIRING AT the BMS II 2 8 BMS II Bias Switches 2 8 2 7 RS485 MODBUS WIRING AT the aerco boilers 2 9 RS485 Wiring for Benchmark Series and KC1000 Boilers 2 9 RS485 Wiring for Modulex Series Boilers 2 11 2 8 Sample RS485 Modbus Network Diagrams 2 12 2 9 RS232 Wiring at the BMS II 2 14 2 10 I...

Страница 6: ...TEMP 3 9 REMOTE SIGNAL 3 9 OFFSET ENABLE 3 9 Offset Menu Options 3 9 Setting Up An Offset Schedule 3 10 Manual Offset 3 10 3 9 CONFIGURATION MENU 3 10 BOILER OP MODE 3 10 SYS INTLK CONFIG 3 11 BLR START LEVEL 3 11 BLR STOP LEVEL 3 11 MAX POWER INPUT 3 11 FAIL SAFE MODE 3 11 3 10 TUNING MENU 3 12 PROPORTIONAL BND 3 12 INTEGRAL GAIN 3 12 DERIVATIVE GAIN 3 13 HDR TEMP DEADBND 3 13 3 11 RELAY MENU 3 1...

Страница 7: ...electing Remote Signal Type 4 4 Selecting Boiler Operating Mode 4 5 4 4 CONSTANT SETPOINT MODE 4 5 Selecting Constant Setpoint Mode 4 5 Selecting Internal Setpoint Temperature 4 6 Selecting Boiler Operating Mode 4 6 4 5 TEMP AND LOAD OPTION 4 6 4 6 START ENABLED OPTION 4 7 4 7 SYSTEM INITIALIZATION and polling 4 7 4 8 TESTING THE SYSTEM 4 7 CHAPTER 5 TROUBLESHOOTING 5 1 5 1 FAULT MESSAGES COMMON P...

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Страница 9: ...ent System EMS or Building Automation System BAS utilizing Modbus protocol Physical connection to the remote EMS or BAS is accomplished via an RS232 interface EMS BAS integration will also permit utilization of the pass thru function incorporated in the BMS II The pass thru function permits the remote system to monitor up to 35 operating parameters from each boiler in the plant The BMS II is house...

Страница 10: ...rdered with a RS485 to RS232 Converter which can be easily installed within the wiring compartment of the BMS II With the exception of AC power interlock and setback inputs and relay outputs BMS II connections are accomplished using twisted shielded pair cable User Friendly Control System Interface The unit incorporates a menu driven architecture which is comprised of 9 primary menus The user inte...

Страница 11: ...units A header temperature accuracy of 2 F is virtually assured during continuous plant operation Bumpless Transfer When operated sequentially The BMS II stages boilers on and off at selectable firing rate percentages The result is a seamless transition with undetectable room temperature changes In addition when in sequential mode the BMS II sequences boilers using a first on first off basis there...

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Страница 13: ...should be at eye level Mounting is accomplished using three screws not provided The spacing for the three screws are indicated on the rear of the BMS II in millimeters Figure 2 1 shows the rear of the panel enclosure and also indicates the required spacing for the three mounting screws in inches Proceed as follows to mount the unit 1 First install a screw on the mounting surface at the top center ...

Страница 14: ...munication wiring This wiring should be 18 to 24 AWG Examples of suitable sensor and communication wire are Belden 9841 8761 3105A or equivalent AC power wiring should be 14 to 18 AWG The BMS II wiring diagram is provided in Appendix E Once mounting is complete and the BMS is secured in place loosen the two captive screws on the wiring compartment cover using a Phillips screwdriver Feed all wiring...

Страница 15: ...of power wiring turn on the external circuit breaker or switch and apply power to the unit The BMS II display will momentarily show AERCO BMSII REV X XX Where X XX represents the revision level of the installed BMS II software 4 Next since the Header Sensor is not yet installed the display will then show HEADER TEMP SENSOR ERROR The red FAULT LED indicator will also light and a fault message will ...

Страница 16: ...INSTALLATION ...

Страница 17: ...INSTALLATION 2 5 ...

Страница 18: ...d pair 18 AWG cable Belden 8760 or equiv is recommended for sensor wiring The Outdoor Air Sensor can be mounted up to 600 feet from the BMS II NOTE The Outdoor Air Sensor is a thermistor type sensor The Resistance vs Temperature Chart for this type of sensor is provided in Appendix E The length of the Header Sensor wire leads should not exceed 600 feet 1 Refer to Figure 2 4 for a typical Outdoor A...

Страница 19: ...INSTALLATION 4 Terminate the cable shield at SHLD terminal 3 of the BMS II DO NOT terminate the shield at the Sensor end of the cable Figure 2 4 Outdoor Air Sensor Installation 2 7 ...

Страница 20: ... Shielded twisted pair 18 24 AWG cable Belden 98421 3105A 8760 or equiv is recommended for RS485 wiring connections At the BMS II wiring connections are made at the terminals labeled 485 B and 485 A Figure 2 5 Typical Daisy Chain Modbus RS485 Network At the BMS II RS485 Modbus wiring connections are made at the wiring terminals labeled 485 B and 485 A The cable shield is terminated at the SHLD ter...

Страница 21: ...INSTALLATION ...

Страница 22: ...s of the incoming and outgoing leads together The RS485 loop shield should only be terminated at terminal 3 of the BMS II 4 Activate the BIAS1 BIAS2 and TERM switches on the last boiler in the daisy chain loop 5 DO NOT activate the bias switches on the BMS II Figure 2 7 RS485 Modbus Wiring For Benchmark Series Boilers 2 10 ...

Страница 23: ...8 RS485 Modbus Wiring For KC1000 Boilers RS485 Wiring for Modulex Series Boilers RS485 wiring connections are made at the MODBUS terminals of each Boiler s BCM Module as shown in Figure 2 9 Connect the wiring as follows 2 11 ...

Страница 24: ...mination jumper engaged as shown in Figure 2 9 5 The BMS II bias switches must be activated Y2 Y3 Y4 Y1 SW1 A1 I 0 BCM FRONT VIEW 7 6 5 4 3 2 1 Y2 JP2 JP1 T C V JUMPER SHOWN IN TERMINATED UP POSITION Figure 2 9 RS485 Modbus Wiring For Modulex Series Boilers 2 8 SAMPLE RS485 MODBUS NETWORK DIAGRAMS Figure 2 10 shows a sample RS485 Modbus Network diagram with the BMS II connected to KC1000 or Benchm...

Страница 25: ... SLAVE ON THE RS485 LOOP MUST HAVE ITS TERMINATION RESISTOR T ACTIVATED REFER TO GF 115 C FOR MORE INFORMATION THE BIAS SWITCHES IN THE BMS II SHOULD BOTH BE TURNED ON SET BOTH SWITCHES TO ON BIAS SWITCHES B P O BCM Y2 NETWORK BOILER 1 1 2 A MODBUS B P O BCM Y2 NETWORK BOILER 2 1 2 A MODBUS Figure 2 11 Sample RS485 Modbus Network For Modulex Series Boilers 2 13 ...

Страница 26: ...h can be used to power AERCO s RS485 to RS232 Converter if needed Refer to Figure 2 12 for sample network layouts RS232 50 FT MAX EMS T R SHLD RS485 PORT T R SEE NOTE 1 TO BOILERS CONTROLLED VIA RS485 NETWORK 4000 FT MAX 485 PORT RXD TXD B A SHLD BMS II 232 PORT ISO GND TXD RXD GND RS485 TO RS232 CONVERTER RS485 4000 FT MAX ISO 12V SEE NOTE 2 T R R T SHIELD 4 WIRE RS485 PORT DETAIL A NOTES 1 IF TH...

Страница 27: ...uch as air dampers or flow switches It can also be used as a general purpose interlockIf used connect the end proving switch to INT 1 terminals 9 and 10 as shown in the wiring diagram in Appendix E Interlock 2 INT 2 Wiring Similar to Interlock 1 Interlock 2 is a general purpose interlock which can be used with a variety of devices or equipment or conditions that must be proved prior to enabling th...

Страница 28: ...led by the option selected for the FAULT ALRM RELAY FAULT ALARM BLR and FAULT ALRM CLEAR in the Relay Menu Contact closure can be set to ALL FAULTS NO INTERLOCK INTERLOCK 2 or INTERLOCK 1 The default for this option is ALL FAULTS Auxiliary Relay The state of the Auxiliary AUX relay contacts are controlled by the AUX RELAY CLOSE and AUX RELAY OPEN options selected in the Relay Menu Contact closure ...

Страница 29: ...navigate through the extensive array of menus and options incorporated in the BMS II design Descriptions for all menus and options are also provided 3 2 FRONT PANEL OPERATING CONTROLS AND DISPLAYS The front panel of the BMS II contains an vacuum fluorescent display VFD and an 8 key touch pad The display and controls are illustrated and described in Figure 3 1 and Table 3 1 respectively Figure 3 1 ...

Страница 30: ... Allows you to go back to the previous menu level without changing any information Continuously pressing this key will bring you back to the default status display in the Operating Menu Also this key allows you to go back to the top of a main menu category Up Arrow When in one of the main menu categories pressing this key will move you forward through the displayed menu category If the CHANGE key ...

Страница 31: ...he Menu Keys shown in Figure 3 1 Therefore it is imperative that you be thoroughly familiar with the following basic steps before attempting to perform specific menu processing procedures 1 The BMS Il will normally be in the Operating Menu and the VFD will display the current unit status Pressing the or arrow key will display the other available data in the Operating Menu 2 Press the MENU key The ...

Страница 32: ...OPERATION Figure 3 2 BMS II Menu Structure 3 4 ...

Страница 33: ...erminals 4 and 5 of the BMS II If the Header Sensor is not installed HDR SENS ERROR will appear in the first line of the display The red FAULT indicator will also light The Header Sensor MUST be installed for the BMS II to operate properly The PERCENT OF LOAD option shows the percent level going from the BMS II to each boiler in the boiler plant It also shows the number of boiler units that are op...

Страница 34: ...the operator to set the unit password which is required to change any of the ENTER PASSWORD ption allows the Level 1 159 or Level 2 6817 to be entered tion Menu can assword 6817 must be entered to view or change options in the Calibration Menu Only Date and Time Menu Options th date and time are as follows SET MONTH 01 12 TO SATURDAY menu options To prevent unauthorized use a previously entered pa...

Страница 35: ...ximum time seconds allowed before re sending the setpoint information If the information is not re sent within this time perion the BMS will default to its Failsafe mode of operation set in the Configuration Menu The network timeout period is selectable from 005 to 240 seconds Default 060 MODBUS PASS THRU When enabled the MODBUS PASS THRU option allows an EMS or computer communicating from the RS2...

Страница 36: ...work Each Boiler must be assigned a unique address on the network ranging from 001 to127 No addresses should be entered if automatic boiler detection is desired Simply set the MIN SLAVE ADDR and MAX SLAVE ADDR to the minimum and maximum address range of the boilers To program boiler addresses in the order you desire enter them here and set the MIN SLAVE ADDR and MAX SLAVE ADDR to zero 3 8 FIELD AD...

Страница 37: ... The BLDG REF TEMP menu option is only displayed when the HEADER SET MODE is set to OUTDOOR RESET This option is used to set the Building Reference Temperature BLDG REF TEMP to the desired value from 40 F to 220 F Default 70 F REMOTE SIGNAL The REMOTE SIGNAL menu option is only displayed when the HEADER SET MODE is set to REMOTE SETPT When displayed this option is used to select the controlling re...

Страница 38: ...imes can be set for each day if desired If a switch is conn controlled manually To set up a manual offset schedule proceed as follows 1 Scroll through the FIELD ADJUST MENU and select OFFSET ENABLE Set this 2 Next scroll to SUN OFFS TEMP and set the desired Offset Temperature A different Temperature can be set for each day if desired 3 Scroll through the remaining days of the week an O TEMP for th...

Страница 39: ...tart Relay is activated before looking for a closure across the System Start Interlock selected See SYS START INTLK in the RELAY MENU If no closure is seen after 30 seconds the BMS II will stop the boilers and display a fault message and activate the fault relay ALWAYS ENABLED will cause a fault whenever the interlocks are opened NOTE The BLR START LEVEL and BLR STOP LEVEL must be programmed in th...

Страница 40: ...ulation in the BMS II For instance proportional band of 50 F is chosen The header temperature setpoint is 180 F and the actual incoming supply water temperature is 130 F This is a 50 error and the following is true Temp Error_____ X 100 Firing Rate in Prop Bandwidth Therefore 50 X 100 Firing Rate 50 1 X 100 100 Firing Rate With an error of 30 and a bandwidth of 50 the following would be true 30 50...

Страница 41: ...tem Start Relay will open if the Outdoor temperature is above the value set for this option SYS START OPTION The SYS START OPTION can be set to TEMP ONLY or TEMP AND LOAD Selecting TEMP ONLY means the System Start Relay will be active whenever the Outdoor Temperature falls below the System Start Temperature SYS START TEMP Selecting TEMP AND LOAD will cause the System Start Relay to activate if the...

Страница 42: ...hat could adversely affect system operation if incorrectly set HDR SENS OFFSET This option sets the offset temperature value that is added to the displayed Header Sensor temperature in the event that it is different from a trusted reference Header temperature reading and needs calibration Be sure the Header Sensor is properly installed before adjusting this offset value The allowable offset range ...

Страница 43: ...tion is used to set the BMS II to its factory default values Make sure that you want to reset all options before activating 3 13 BMS II QUICK START GUIDE NOTE The Quick Start procedures in paragraph 3 13 assume that the user fully understands the BMS II menu structure and is able to navigate through these menus to display and change menu options Refer to paragraph 3 3 for menus and menu processing...

Страница 44: ...Boiler Start Level Percent default 20 See Appendix I BLR STOP LEVEL Enter Boiler Stop Level Percent default 16 See Appendix I REMOTE SETPT MODE Perform the procedure described for the CONSTANT SETPT MODE and then continue with the steps described below MENU OPTION ACTION 1 FIELD ADJUST MENU HEADER SET MODE Set to REMOTE SETPT HDR HIGH LIMIT Enter the maximum temperature for the Remote Setpoint inp...

Страница 45: ...ture Default 70 F Refer to Appendix C 2 CONFIGURATION MENU FAIL SAFE MODE Set to CONSTANT SETPT if you want to maintain a Constant Setpointt temperature in the event that the Outdoor Sensor signal is lost Default SHUTDOWN 3 RELAY MENU SYS START TEMP Enter the outdoor temperature below which the system will be activated After completing the Quick Start procedure for any of the modes described above...

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Страница 47: ...rature Therefore in order to set up and operate in this mode an outdoor air sensor MUST be installed This mode requires entries to be made in the Field Adjust Menu and Relay Menu for the following options FIELD ADJUST MENU o HEADER SET MODE o RESET RATIO o BLDG REF TEMP CONFIGURATION MENU o BOILER OPERATING MODE RELAY MENU o SYSTEM START RELAY TEMP The programming set up instructions for the above...

Страница 48: ...hat a change is in process 3 Select the required Reset Ratio using the or arrow key 4 Press the ENTER key to store the change The reverse video display will revert to the normal display format indicating that the change has been store in memory 5 Next scroll through the Field Adjust Menu and select BLDG REF TEMP 6 If the desired BLDG REF TEMP is not displayed press the CHANGE key The display will ...

Страница 49: ...E SETPOINT MODE In order to set up the BMS II to operate in this mode a Modbus communication line or a 4 to 20 mA input line with a floating ground from an Energy Management System EMS is required In addition a BMS header sensor is required This mode may be used with or without an outdoor air temperature sensor installed Entries in this mode are required for the following items FIELD ADJUST MENU o...

Страница 50: ...t 040 F 6 If the required HDR LOW LIMIT is not displayed press the CHANGE key 7 Using the or arrow key select required HDR LOW LIMIT temperature Press the ENTER key to store the change 8 With the BMS II still in the FIELD ADJUST MENU proceed to the next paragraph and continue the set up procedure NOTE If the Remote Signal is set to 4 20 mA the HDR HIGH LIMIT temperature defines the 20 mA value and...

Страница 51: ...ion in the Remote S header sensor is required Entries in this mode are DE Selecting Constant Setpoint Mode g the Header Set Mode option in the Field Adjust Menu as eypad on the BMS II press the MENU key until FIELD ADJUST MENU appears in the or arrow key on the keypad scroll through the menu until HEADER SET MODE is In the Constant Setpoint Mode of operation only a required for the following items...

Страница 52: ...ill revert to the normal display point Mode key The VFD display will switch to a reverse video format indicating that a change is in process 4 Using the or arrow key toggle the display to the desired setting 5 Press the ENTER key to store the change The reverse video display format indicating that the change has been store in memory 6 The BMS II is now programmed for operation in the Constant Set ...

Страница 53: ...o ensure that a Boiler AC power is not turned off b Boiler is not shut down due to a fault c The RS485 Network connection is not broken The BMS will continuously poll the boilers at prescribed intervals Therefore if a boiler is placed off line and then placed back on line it will again be recognized by the BMS during the next polling cycle 4 8 TESTING THE SYSTEM The following procedure places a lo...

Страница 54: ...ve not been identified by the BMS II 9 Remember that in the Sequential mode the BMS II turns boilers on in 30 second intervals Therefore in a 6 boiler plant with five boilers operating at 55 capacity a boiler that has not started after 3 minutes has not been recognized In parallel mode all boilers will start at the same time 10 This completes the System Test Return the HEADER SET MODE and INTERNAL...

Страница 55: ...roblems that may occur during BMS II operation and provide Probable Causes and Corrective Action for each listed Probable Cause Table 5 1 Fault Messages Fault Message Description Possible cause OUTSIDE AIR TEMP NOT CONNECTED Open outside air temp sensor resistance greater than 240K ohms less than 40 F Shorted outside air temp sensor resistance less than 1K ohms greater than 200 F No sensor connect...

Страница 56: ... during Modbus Remote Setpoint operation when the BMS II is functioning as a Slave to an EMS Master Error indicates that the Network Timeout has expired NETWORK DISABLED MODBUS LISTEN Displayed during Modbus operation when the FORCE LISTEN ONLY Modbus diagnostic command is sent to the BMS II Slave by the controlling Master thereby disabling normal Modbus Network communication It indicates that the...

Страница 57: ...ured correctly C More Box not enabled Front panel switch is off Incorrect wiring between BMS II and Boiler Alarm condition present on C More Control Box Ensure that the C More Boiler is configured for Direct Drive see Chapter 5 of correct BMK or KC1000 O M Manual for required menu settings Check ON OFF switch See Chapter 2 for correct wiring connections Clear alarm condition Modulex Boiler with BC...

Страница 58: ...t or tripping aquastat Header sensor not installed correctly PID setting require adjustment Adjustable aquastat set too low System pumps are shut down and not controlled by or interlocked with the BMS II Check header sensor connections and installation Adjust PID settingsin TUNING MENU paragraph 3 10 If aquastat is set lower than 200 F reset it to 220 F If system pumps are shut down check start an...

Страница 59: ... Bit 2 Sys Start Relay Bit 3 Empty Bit 4 Setback Bit 5 Interlock 2 Bit 6 Interlock 1 Bit 7 Empty RETURN TEMP 40 280 N A SETUP MENU ENTER PASSWORD Level 1 159 Level 2 6817 0 32000 0 SET MONTH 01 12 SET DATE 01 31 SET YEAR 00 99 SET HOUR 00 23 SET MINUTE 00 59 SET DAY OF WEEK SUNDAY TO SATURDAY RS232 MENU RS232 MODE MODBUS SLAVE NORMAL MODBUS SLAVE RS232 BAUDRATE 2400 4800 9600 19200 9600 MODBUS ADD...

Страница 60: ...000 127 001 NETW BOILER 02 ADDRESS 000 127 002 NETW BOILER 03 ADDRESS 000 127 000 Etc Up To NETW BOILER 32 ADDRESS 000 127 000 FIELD ADJUST MENU HEADER SET MODE CONSTANT SETPOINT OUTDOOR RESET REMOTE SETPOINT CONSTANT SETPOINT HDR HIGH LIMIT 040 F 220 F 200 F HDR LOW LIMIT 040 F 220 F 040 F INTERNAL SETPT 040 F 220 F 160 F RESET RATIO Displayed Only if HDR SET MODE OUTDOOR RESET 0 3 3 0 1 2 BLDG R...

Страница 61: ...F MINUTE 00 59 00 Etc Up To SAT OFF MINUTE 00 59 00 CONFIGURATION MENU BOILER OP MODE SEQUENTIAL MODE PARALLEL MODE SEQUENTIAL MODE SYS INTLK CONFIG START ENABLED ALWAYS ENABLED START ENABLED BLR START LEVEL 001 100 020 BLR STOP LEVEL 001 040 016 MAX POWER INPUT 050 100 100 FAIL SAFE MODE SHUTDOWN CONSTANT SETPOINT SHUTDOWN TUNING MENU PROPORTIONAL BND 005 F 120 F 070 F INTEGRAL GAIN 0 00 REP MIN ...

Страница 62: ...0 099 045 AUX RELAY CLOSE 100 FIRE RATE 100 AND OFF 100 AND OFF FAULT ALRM RELAY ALL FAULTS NO INTERLOCK INTERLOCK 2 INTERLOCK 1 ALL FAULTS FAULT ALARM BLRS NO BLR FAULTS ALL BLR FAULTS NO BLR FAULTS FAULT ALRM CLEAR AUTOMATIC MANUAL RESET AUTOMATIC CALIBRATION MENU HDR SENS OFFSET 10 0 10 0 00 0 OUTD SENS OFFSET 10 0 10 0 00 0 4 20 MA OFFSET 10 0 10 0 00 0 RET SENS OFFSET 10 0 10 0 00 0 RAMP UP M...

Страница 63: ...P NOT CONNECTED The Outdoor Air Temperature Sensor is not installed and connected RETURN TEMP NOT INSTALLED The Boiler Return Temperature Sensor is not installed FAULT MESSAGES OUTDOOR SENSOR ERROR The Outdoor Air Temperature Sensor signal is out of range HEADER SENSOR ERROR The Header Temperature Sensor signal is out of range or disconnected RETURN SENSOR ERROR The Return Temperature Sensor signa...

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Страница 65: ...ature of 125 F the reset ratio is 1 4 Determining Reset Schedule By Formula There are two steps required to determine reset schedule with this method The first is to determine the reset ratio by dividing the range of outside temperatures by the range of header temperatures Theader Toutside Reset Ratio for example If Toutside varies from 10 to 95 F 105 range and Theader varies from 125 to 200 F 75 ...

Страница 66: ...20 F 92 F 106 F 120 F 134 F 148 F 162 F 176 F 190 F 204 F 218 F Table C 2 Header Temperature for a Building Reference Temperatrure of 60 F RESET RATIO Air Temp 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 2 2 2 4 60 F 60 F 60 F 60 F 60 F 60 F 60 F 60 F 60 F 60 F 60 F 55 F 63 F 64 F 65 F 66 F 67 F 68 F 69 F 70 F 71 F 72 F 50 F 66 F 68 F 70 F 72 F 74 F 76 F 78 F 80 F 82 F 84 F 45 F 69 F 72 F 75 F 78 F 81 F 84 F ...

Страница 67: ... 185 F 200 F 215 F 15 F 113 F 129 F 145 F 161 F 177 F 193 F 209 F 20 F 116 F 133 F 150 F 167 F 201 F 218 F Table C 4 Header Temperature for a Building Reference Temperature of 70 F RESET RATIO Air Temp 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 2 2 2 4 70 F 70 F 70 F 70 F 70 F 70 F 70 F 70 F 70 F 70 F 70 F 65 F 73 F 74 F 75 F 76 F 77 F 78 F 79 F 80 F 81 F 82 F 60 F 76 F 78 F 80 F 82 F 84 F 86 F 88 F 90 F 92 ...

Страница 68: ...10 F 5 F 123 F 139 F 155 F 171 F 187 F 203 F 219 F 10 F 126 F 143 F 160 F 177 F 194 F 211 F 15 F 129 F 147 F 165 F 183 F 201 F 219 F Table C 6 Header Temperature for a Building Reference Temperature of 80 F RESET RATIO Air Temp 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 2 2 2 4 80 F 80 F 80 F 80 F 80 F 80 F 80 F 80 F 80 F 80 F 80 F 75 F 83 F 84 F 85 F 86 F 87 F 88 F 89 F 90 F 91 F 92 F 70 F 86 F 88 F 90 F 92...

Страница 69: ...0 F 125 F 130 F 135 F 140 F 145 F 150 F 60 F 108 F 114 F 120 F 126 F 132 F 138 F 144 F 150 F 156 F 162 F 55 F 111 F 118 F 125 F 132 F 139 F 146 F 153 F 160 F 167 F 174 F 50 F 114 F 122 F 130 F 138 F 146 F 154 F 162 F 170 F 178 F 186 F 45 F 117 F 126 F 135 F 144 F 153 F 162 F 171 F 180 F 189 F 198 F 40 F 120 F 130 F 140 F 150 F 160 F 170 F 180 F 190 F 200 F 210 F 35 F 123 F 134 F 145 F 156 F 167 F ...

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Страница 71: ...9 210 842 0 70 314 220 723 10 53 068 230 623 20 40 418 240 539 30 31 053 250 468 40 24 057 260 408 50 18 787 270 357 60 14 783 280 313 70 11 717 290 276 80 9 353 300 243 90 7 516 310 100 6 078 320 110 4 946 330 120 4 049 340 130 3 333 350 140 2 759 360 150 2 296 370 160 1 920 380 170 1 613 390 NOTE This Temperature Chart is applicable to Header Sensor and Return Sensor Part No 64038 and Outside Ai...

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Страница 73: ...APPENDIX E E 1 APPENDIX E _____________________________ BMS II WIRING DIAGRAM ...

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Страница 75: ...rent loop GP 122662 Outside Air Temperature Sensor Sensor Only GM 122781 Outside Air Temperature Sensor Kit Includes Sensor GP 122662 and Mounting Bracket 64038 Header Temperature Sensor Sensor Only GP 122758 Thermowell for Header Temperature Sensor Thermowell Only GM 122790 Header Temperature Sensor Kit Includes 64038 and GP 122758 GM 122791 Outdoor Reset Kit Includes GM 122781 and GM 122790 6201...

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Страница 77: ...ust be adhered to when interfacing the BMS to the Terminal device 1 Connect cable leads to the RS 232 connector in the wiring area of the BMS II 2 Connect the free end of the cable to the COM 1 or COM 2 port on your laptop or other suitable terminal device 3 Set up the emulator communication link as follows d Set the baud rate to 9600 e Set the data format to 8 bits 1 stop bit no parity and either...

Страница 78: ...desired command from Table J 1 2 To view a parameter type followed by the command number and then press return Rtn For example to view command no 00 HEADER TEMPERATURE enter 00 Rtn The header temperature reading will be displayed All temperature readings are in F 3 To program set a BMS parameter type followed by the command number an equal sign the parameter value and a trailing zero For example t...

Страница 79: ...ements 1 2 12 Maximum Header Temperature F 40 to 220 220 13 Minimum Header Temperature F 40 to 220 40 14 Boiler Start Percent 25 to 100 20 15 Boiler Stop Percent 10 to 45 16 16 Integral Gain Rep Min 0 00 to 9 99 0 01 increments 0 15 17 Header Set Mode 0 Constant Setpt 1 Indr Outdr Reset 2 Remote Settemp 0 Constant Setpt 18 Derivative Gain 2 00 to 2 00 0 01 increments 0 15 19 Proportional Band F 5 ...

Страница 80: ...o 31 Present Day 37 Real Time Clock Month 00 to 12 Present Month 38 Day 1 Sun Thru Offset Temperatures Day 1 7 50 to 50 F All Set To 0 F 44 Day 7 Sat 45 Sun Thru Offset ON Time Minutes Sun Sat 00 to 59 All Set to Zero 51 Sat 52 Sun Thru Offset ON Time Hours Sun Sat 00 to 23 All Set To Zero 58 Sat 59 Offset Enable 0 Disabled 1 Enabled 0 Disabled 60 Header Temp Offset F 10 F to 10 F 0 61 System Star...

Страница 81: ... Address for Network Boiler 3 000 95 Net Boiler 4 Address Address for Network Boiler 4 000 96 Net Boiler 5 Address Address for Network Boiler 5 000 97 Net Boiler 6 Address Address for Network Boiler 6 000 98 Net Boiler 7 Address Address for Network Boiler 7 000 99 Net Boiler 8 Address Address for Network Boiler 8 000 100 Net Boiler 9 Address Address for Network Boiler 9 000 101 Net Boiler 10 Addre...

Страница 82: ...etwork Boiler 23 000 115 Net Boiler 24 Address Address for Network Boiler 24 000 116 Net Boiler 25 Address Address for Network Boiler 25 000 117 Net Boiler 26 Address Address for Network Boiler 26 000 118 Net Boiler 27 Address Address for Network Boiler 27 000 119 Net Boiler 28 Address Address for Network Boiler 28 000 120 Net Boiler 29 Address Address for Network Boiler 29 000 121 Net Boiler 30 A...

Страница 83: ...Ramp Up Min 000 to 300 20 133 Ramp Down Min 000 to 300 200 134 Fault Alarm Boilers No Blr Faults All Blr faults No Blr Faults 135 4 20 mA Offset 1 00 to 1 00 mA 0 0 mA 136 Return Sensor Offset 10 0 to 10 0 F 0 0 F 137 Load Start Pct 000 to 100 1 138 Load Stop Pct 000 to 100 0 150 I O Status 00 to 255 Bit 0 AUX Relay Bit 1 Fault Relay Bit 2 Sys Start Relay Bit 3 Empty Bit 4 Setback Bit 5 Interlock ...

Страница 84: ......

Страница 85: ...GNMENMTS The Read Only Input Register assignments for the BMS II are listed in Table H 1 which follows Table H 1 BMS II Standard Input Register Address Mapping Modbus Data Address Hex Menu Item Units and Range Default Comments 0x Tf452 564 48 0 96 4 56 MC6IT3 1 T7T3 1I___0 002622 1 ess 20 7 ved6 H 7g 13 e 4 TJEMC P MCID 4 ...

Страница 86: ...01A Boiler 2 Status Net Boiler 2 Same As Above 0x001B Boiler 3 Status Net Boiler 3 Same As Above 0x001C Boiler 4 Status Net Boiler 4 Same As Above 0x001D Boiler 5 Status Net Boiler 5 Same As Above 0x001E Boiler 6 Status Net Boiler 6 Same As Above 0x001F Boiler 7 Status Net Boiler 7 Same As Above 0x0020 Boiler 8 Status Net Boiler 8 Same As Above 0x0021 Boiler 9 Status Net Boiler 9 Same As Above 0x0...

Страница 87: ...et Boiler 18 Same As Above 0x002B Boiler 19 Status Net Boiler 19 Same As Above 0x002C Boiler 20 Status Net Boiler 20 Same As Above 0x002D Boiler 21 Status Net Boiler 21 Same As Above 0x002E Boiler 22 Status Net Boiler 22 Same As Above 0x002F Boiler 23 Status Net Boiler 23 Same As Above 0x0030 Boiler 24 Status Net Boiler 24 Same As Above 0x0031 Boiler 25 Status Net Boiler 25 Same As Above 0x0032 Bo...

Страница 88: ...APPENDIX H H 4 A _ ...

Страница 89: ...twork 0x0005 System Start Temp 32 to 120 F Default 70 F 0x0006 System Start Option 0 or 1 0 Temp Only 1 Temp and Load Default 0 0x0007 Manual Hdr Set Temp Internal Setpt 40 to 220 F Default 160 F 0x0008 Bldg Ref Temp 40 to 220 F Default 70 F 0x0009 Not Applicable 0x000A Not Applicable 0x000B Reset Ratio 0 3 to 3 0 0 1 increments Default 1 2 Value x 10 0x000C Max Header Temp 40 to 220 F Default 200...

Страница 90: ...te Off 0x0016 Failsafe Mode 0 or 1 0 Shutdown 1 Constant Setpt Default 0 Shutdown 0x0017 Fault Alarm Relay Mode 0 1 2 3 0 All Faults 1 No Interlock 2 Interlock 1 3 Interlock 2 Default 0 All Faults 0x0018 Fault Alarm Clear Method 0 or 1 0 Automatic 1 Manual Default 0 Automatic 0x0019 Boiler Operation Mode 0 1 or 2 0 Parallel 1 Sequential 2 Combination Default 1 Sequential 0x001A Not Applicable 0x00...

Страница 91: ...to 50 F Default 0 F 0x0027 Offset Temp Mon 50 to 50 F Default 0 F 0x0028 Offset Temp Tue 50 to 50 F Default 0 F 0x0029 Offset Temp Wed 50 to 50 F Default 0 F 0x002A Offset Temp Thu 50 to 50 F Default 0 F 0x002B Offset Temp Fri 50 to 50 F Default 0 F 0x002C Offset Temp Sat 50 to 50 F Default 0 F 0x002D Offset On Time Day 1 Minutes 00 to 59 Minutes Default o 0x002E Offset On Time Day 2 Minutes 00 to...

Страница 92: ...efault 0 0x003A Offset On Time Day 7 Hours 00 to 23 Hours Default 0 0x003B Offset Enable 0 or 1 0 Disabled 1 Enabled Default 0 Disabled 0x003C Header Temp Offset 10 to 10 F Default 0 F 0x003D System Start Interlock 1 2 or 3 1 Intlk1 Opens Start Relay 2 Intlk2 Opens Start Relay 3 Either Intlk Opens Start Relay Default 1 Intlk 1 0x003E Thru 0x0045 Reserved 0x0046 Offset Off Time Sun Minutes 0 to 59 ...

Страница 93: ...51 Offset Off Time Thu Hours 0 to 23 Hours Default 0 0x0052 Offset Off Time Fri Hours 0 to 23 Hours Default 0 0x0053 Offset Off Time Sat Hours 0 to 23 Hours Default 0 0x0054 Reserved 0x0055 Not Applicable 0x0056 Remote Signal 0 or 1 0 4 20 Ma 1 Network Default 0 4 20 Ma 0x0057 RS232 Mode 0 or 1 0 Normal 1 Modbus Default 1 Modbus 0x0058 RS232 Baud Rate 0 2400 1 4800 2 9600 3 14400 4 19200 2 9600 0x...

Страница 94: ...ress Address for Network Boiler 9 Default 0 0x0065 Net Boiler 10 Address Address for Network Boiler 10 Default 0 0x0066 Net Boiler 11address Address for Network Boiler 11 Default 0 0x0067 Net Boiler 12 Address Address for Network Boiler 12 Default 0 0x0068 Net Boiler 13 Address Address for Network Boiler 13 Default 0 0x0069 Net Boiler 14 Address Address for Network Boiler 14 Default 0 0x006A Net B...

Страница 95: ...0076 Net Boiler 27 Address Address for Network Boiler 27 Default 0 0x0077 Net Boiler 28 Address Address for Network Boiler 28 Default 0 0x0078 Net Boiler 29 Address Address for Network Boiler 29 Default 0 0x0079 Net Boiler 30 Address Address for Network Boiler 30 Default 0 0x007A Net Boiler 31 Address Address for Network Boiler 31 Default 0 0x007B Net Boiler 32 Address Address for Network Boiler 3...

Страница 96: ...F Default 0 0x0084 Dyn Up 0 to 300 Default 20 0x0085 Dyn Down 0 to 300 Default 200 0x0086 Fault Alarm Boilers 0 No Blr Faults 1 All Blr Faults Default 0 0x0087 4 to 20 mA Current Offset 1 00 mA to 1 00 mA Default 0 0x0088 Return Sensor Offset 10 0 F to 10 0 F Default 0 0x0089 Load Start Pct 1 to Blr Start Level Default 1 0x008A Load Stop Pct 0 to Load Start 1 Default 0 0x008B Thru 0xFFFF Reserved ...

Страница 97: ...by accessing the Calibration Menu in the C More Boiler Controllers For Modulex Boilers the corresponding Start and Start Levels for each Boiler Model are listed in the following Table MODULEX BOILER START STOP LEVELS MODULEX MODEL NUMBER OF MODULES START LEVEL STOP LEVEL MLX 303 2 17 15 MLX 454 3 12 10 MLX 606 4 9 7 MLX 757 5 7 5 MLX 909 6 6 4 MLX 1060 7 5 3 When the Boiler Plant being controlled ...

Страница 98: ......

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