Dual Fuel Procedure - Siemens LMV5 Series Technical Instructions

LMV Series
VFD Bypass (continued)

Dual Fuel Procedure

1. Wire the LMV52, VFD, and motor contactors as shown in Figure 15.
2. Ensure the VFD is activated on gas, and deactivated on oil. This can be done through
the following menu paths:
Params & Display > RatioControl > Gas Settings > VSD = activated
Params & Display > RatioControl > Oil Settings > VSD = deactivated
3. Ensure the LMV52 is not set up for continuous purge. This can be done through the
following menu path:
Params & Display > BurnerControl > Configuration > ConfigGeneral >
ContinuousPurge = deactivated
SCC Inc.
Figure 15: Wiring for a Dual Fuel VFD Bypass
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Technical Instructions
Document No. LV5-8000
Appendix A