Technical Instructions LME Series
Document No. LME-1000
Table of Contents Page 2 SCC Inc.
Section 6: PWM Blowers
Introduction ........................................................................................................................... 1
PWM Blower Fundamentals ................................................................................................... 1
Centrifugal Blower Fundamentals .......................................................................................... 2
Blower Speed Monitoring ...................................................................................................... 3
Commissioning the LME7 when Using a PWM Blower............................................................ 5
Adjusting P0, P1, and P2 via the LME7 Built-in Display ........................................................... 7
Adjusting P0, P1, and P2 via the AZL23 Display Unit ............................................................... 8
Additional Tips for Burners with PWM Blowers ...................................................................... 9
Section 7: Troubleshooting
Troubleshooting Introduction ................................................................................................ 1
Complete Fault Code List ....................................................................................................... 3
Other Common Faults ............................................................................................................ 7
Section 8: Modbus
Introduction ........................................................................................................................... 1
Physical Connections.............................................................................................................. 1
Status LED .............................................................................................................................. 2
Tx/Rx LED ............................................................................................................................... 2
Modbus RTU Connection Details ............................................................................................ 3
BACnet MS/TP Connection Details ......................................................................................... 4
Using the OCI417 Configuration Utility ................................................................................... 5
Updating the OCI417.10 Firmware ......................................................................................... 7
Modbus Mapping ................................................................................................................... 8
BACnet Mapping .................................................................................................................. 11
Unused Inputs ...................................................................................................................... 13
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