Technical Instructions LMV Series
Document No. LV5-800
0
Appendix A Page 8 SCC Inc.
Hot Standby on a Steam Boiler with an RWF50 or RWF55 (continued)
LMV5 with an RWF5x for Hot Standby Contro
l Only
Procedure
1. Wire the RWF5x to the LMV5 as shown in Figure 2.
Figure 2: LMV5 to RWF5x Hot Standby Only Wiring
2. Set the LMV5 for load controller operating mode “ExtLC X5-03” through the following
menu path:
Params & Display > LoadController > Configuration > LC_OptgMode =
ExtLC X5-03
3. Set the following parameters in the RWF5x controller. For more information, obtain
Siemens Document No. U7866 for the RWF50 or Document No. U7867 for the RWF55 at
www.scccombustion.com.
ConF > Cntr > SPL = setpoint range lower limit
ConF > Cntr > SPH = setpoint range upper limit
OPr > SP1 = hot standby setpoint
PArA > HYS1 = burner on for hot standby
PArA > HYS3 = burner off for hot standby
ConF > InP > InP1 > Sen1 = temperature sensor type
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