Lochinvar SYNC SB 1000 Instructions Manual Download Page 13 | Manualshive

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4

Wiring Requirements

(continued)

Modbus RS4

8

5 Communication Bus

Modbus RS4

8

5 Po

r

t on Gateway o

r

Buildin

g

System

Physical Configuration: Direct Control

Cascade Daisy Chain Connection

Modbus RS4

8

5 Communication Bus

Modbus RS4

8

5 Po

r

t on Gateway o

r

Buildin

g

System

Physical Configuration: Cascade with individual Monitoring

Modbus Instructions

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Summary of Contents for SYNC SB 1000

Page 1: ...ing this manual the Installation and Operation Manual and the Service Manual before installing Perform steps in the order given Failure to comply could result in severe personal injury death or substa...

Page 2: ...13 5 UNIT OPERATION Unit Operation with Modbus Communications 14 17 6 TROUBLESHOOTING 18 19 7 DIAGRAMS Ladder Diagram Part 1 2 20 21 Wiring Diagram 22 Revision Notes Back Cover Abbreviation or Acronym...

Page 3: ...128 Any dip switch set to 0 has a value equal to 0 Example To set the address of the Modbus board to 50 dip switches 2 5 and 6 have to be set to the 1 position The address is determined by adding the...

Page 4: ...based on its own inputs Parity Parity is set by the position of Dip switch 10 0 No Parity 1 Odd Parity If No Parity is selected there will be two stop bits otherwise there will be one Data Transmissi...

Page 5: ...r Counters and Diagnostic Registers 11 0B Diagnostic Return Bus Message Count 12 0C Diagnostic Bus Communication Error Count 13 0D Diagnostic Bus Exception Error Count 14 0E Diagnostic Return Slave Me...

Page 6: ...expectation of the application program since the MODBUS protocol is unaware of the significance of any particular value of any particular register 04 SLAVE DEVICE FAILURE An unrecoverable error occurr...

Page 7: ...10007 Auto Reset High Limit 1 0 1 ON 0 OFF 0 1 1 10008 Flame 1 0 1 ON 0 OFF 0 1 1 10009 Enable Room Thermostat 1 Stage 1 0 1 ON 0 OFF 0 1 1 10010 Tank Thermostat 0 1 ON 0 OFF 0 1 1 10017 Manual Reset...

Page 8: ...2 0 0 100 1 30023 Boiler 2 Status Code 0 NA 0 65535 1 30024 Boiler 2 Blocking Code 0 NA 0 65535 1 30025 Boiler 2 Lockout Code 0 NA 0 65535 1 Holding Registers 40001 Configuration 0 NA 0 65535 1 40002...

Page 9: ...ther of these temperatures is provided by the BAS but any of the other control signals are being provided the BAS will still need to refresh these inputs at least every 4 minutes Physical Wiring Figur...

Page 10: ...2 INLET TEMPERATURE SENSOR HEAT EXCHANGER 1 HEAT EXCHANGER 2 OUTLET TEMPERATURE SENSOR HEAT EXCHANGER 1 HEAT EXCHANGER 2 FLUE GAS SENSOR HEAT EXCHANGER 1 HEAT EXCHANGER 2 HIGH LIMIT SENSOR FLAME SENS...

Page 11: ...MARY CONTROL MODULE ALARM BELL RUN TIME CONTACTS SEQUENCER BUILDING MANAGEMENT SYSTEM HEAT EXCHANGER 1 HEAT EXCHANGER 2 BOILER PUMP SYSTEM PUMP HW PUMP IGNITOR BLOWER GAS VALVE PC INTERFACE SECONDARY...

Page 12: ...US COMMUNICATION BOARD MTR01 HEAT EXCHANGER 1 HEAT EXCHANGER 2 Modbus Instructions Typical Boiler System Wiring Cascade Daisy Chain Connection Modbus RS485 Communication Bus Modbus RS485 Port on Gatew...

Page 13: ...us RS485 Port on Gateway or Building System Physical Configuration Direct Control Cascade Daisy Chain Connection Modbus RS485 Communication Bus Modbus RS485 Port on Gateway or Building System Physical...

Page 14: ...ll provide for fail safe operation should Modbus communication be lost This timer will cause the unit to revert back to internal unit controls should the Modbus communication be interrupted longer tha...

Page 15: ...l and DHW with remote control DHW with direct control This is the typical installation with a hot water generator in close proximity to the boiler with the tank thermostat or tank temperature sensor w...

Page 16: ...values are only available through the Modbus communication bus To ensure that the SYNC boiler can properly respond to a call for hot water generation the following holding registers must be set in add...

Page 17: ...d setpoint the hexadecimal value must be determined through linear interpolation of programmable parameters on the BMS Setup Menu BMS temperature set point at low analog input BMS temperature set poin...

Page 18: ...utlet temperature 3 Heat Demand blocked due to high absolute flue temperature 4 Heat Demand blocked due to high absolute Delta T Outlet Inlet 8 Heat Demand blocked due to Low 24 VAC 9 Outdoor shutdown...

Page 19: ...36 EEPROM code APS active not Open 237 EEPROM code flame out of sequence 239 EEPROM code when gas valve relay test fails 240 EEPROM code MRHL 32767 Code not present Modbus Instructions Installation Re...

Page 20: ...FLAME ROD SPARK ROD CAUTION HIGH VOLTAGE SPARK LEAD BLOWER X2 2 FLAP VALVE AIR PRESSURE SWITCH FLAP VALVE X5 7 24V X5 7 24V X5 4 X5 4 INLET SENSOR INLET SENSOR OUTLET SENSOR FLUE SENSOR OUTLET SENSOR...

Page 21: ...SYSTEM PUMP RELAY HEX 1 BOILER PUMP CONTACTS HEX 2 BOILER PUMP CONTACTS SYSTEM PUMP CONTACTS L1 N L2 120 VAC 24 VAC ON OFF SWITCH X1 6 BOILER PUMP RELAY DHW PUMP RELAY SYSTEM PUMP RELAY BLOWER RELAY X...

Page 22: ...1 12 CN1 15 CN1 16 CN1 8 CN1 7 CONNECTION BOARD JUNCTION BOX RELAY BOARD K1 K2 K3 X8 MOD BUS KIT X4 X6 6 X6 1 LOW WATER CUTOFF BOARD J3 1 J3 2 J3 3 J3 4 J3 5 J3 6 J2 1 J2 2 J2 3 X6 2 X6 9 X6 10 BLOWER...

Page 23: ...23 Notes...

Page 24: ...Revision Notes Revision A ECO C04560 initial release SYNC MODB Rev A 10 09...

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