Index: firmware/App/Controllers/PresOccl.c
===================================================================
diff -u -r8c8ac9430cbd0a836b51d16a02457575861c5990 -re3f3b5c3552008d58e328ce0d78f2db01cda2b45
--- firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision 8c8ac9430cbd0a836b51d16a02457575861c5990)
+++ firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision e3f3b5c3552008d58e328ce0d78f2db01cda2b45)
@@ -442,7 +442,7 @@
     currentArterialMaxLimit = (S32)ARTERIAL_PRESSURE_LIMIT_MAX_MMHG;
     currentArterialMinLimit = (S32)ARTERIAL_PRESSURE_LIMIT_MIN_MMHG;
     currentVenousMaxLimit   = (S32)VENOUS_PRESSURE_LIMIT_MAX_MMHG;
-    currentVenousMinLimit   = (S32)getMinVenousPressureWideValueMMHG();
+    currentVenousMinLimit   = getMinVenousPressureWideValueMMHG();
 }
 
 /*********************************************************************//**
@@ -541,7 +541,7 @@
         S32 artOffset           = getTreatmentParameterS32( TREATMENT_PARAM_ART_PRES_LIMIT_WINDOW ) / 2;             // Arterial is symmetric
         S32 venMinOffset        = getTreatmentParameterS32( TREATMENT_PARAM_VEN_PRES_LIMIT_ASYMMETRIC );             // Venous is asymmetric
         S32 venMaxOffset        = getTreatmentParameterS32( TREATMENT_PARAM_VEN_PRES_LIMIT_WINDOW ) - venMinOffset;
-        U32 venMinWideLimitMMHG = getMinVenousPressureWideValueMMHG();
+        S32 venMinWideLimitMMHG = getMinVenousPressureWideValueMMHG();
 
         currentArterialMinLimit = stableArterialPressure - artOffset;
         currentArterialMinLimit = MAX( currentArterialMinLimit, ARTERIAL_PRESSURE_LIMIT_MIN_MMHG );
Index: firmware/App/Modes/ModeTreatmentParams.c
===================================================================
diff -u -r8c8ac9430cbd0a836b51d16a02457575861c5990 -re3f3b5c3552008d58e328ce0d78f2db01cda2b45
--- firmware/App/Modes/ModeTreatmentParams.c	(.../ModeTreatmentParams.c)	(revision 8c8ac9430cbd0a836b51d16a02457575861c5990)
+++ firmware/App/Modes/ModeTreatmentParams.c	(.../ModeTreatmentParams.c)	(revision e3f3b5c3552008d58e328ce0d78f2db01cda2b45)
@@ -45,7 +45,8 @@
 #define INSTIT_CHEM_DISINFECT_ENABLE_RANGE      1                       ///< Institutional record chemical disinfect enable/disable allowable range
 #define INSTIT_MIN_RO_REJECTION_RATIO_MAX_PCT   99                      ///< Institutional record min RO rejection ratio maximum in percent.
 #define INSTIT_MAX_INLET_WATER_COND_ALARM_USPCM 300.0F                  ///< Institutional record max inlet water conductivity alarm in uS/cm.
-#define INSTIT_MAX_MIN_VEN_PRES_WIDE_LIMIT_MMHG 20                      ///< Institutional record max min venous pressure wide limit in mmHg.
+#define INSTIT_MAX_MIN_VEN_PRES_WIDE_LIMIT_MMHG 400                     ///< Institutional record max min venous pressure wide limit in mmHg.
+#define INSTIT_MIN_MIN_VEN_PRES_WIDE_LIMIT_MMHG 0                       ///< Institutional record min min venous pressure wide limit in mmHg.
 
 /// Record for range and default of treatment parameters.
 typedef struct
@@ -958,7 +959,7 @@
  * @details Outputs: none
  * @return the min venous pressure wide limit window in mmHg.
  *************************************************************************/
-U32  getMinVenousPressureWideValueMMHG( void )
+S32  getMinVenousPressureWideValueMMHG( void )
 {
     return hdInstitutionalRecord.minVenPressWideLimitWindowMMHG;
 }
@@ -1046,8 +1047,8 @@
     result &= ( ( nvInstRcrd->minRORejectionRatioPCT           <= INSTIT_MIN_RO_REJECTION_RATIO_MAX_PCT )                                         ? TRUE : FALSE );
     result &= ( ( nvInstRcrd->minInletWaterCondAlarmLimitUSPCM >= 0.0F )                                                                          &&
                 ( nvInstRcrd->minInletWaterCondAlarmLimitUSPCM <= INSTIT_MAX_INLET_WATER_COND_ALARM_USPCM )                                       ? TRUE : FALSE );
-    // NOTE: min venous and arterial pressure wide limits are not needed to be >= 0 because it is a U32
-    result &= ( ( nvInstRcrd->minVenPressWideLimitWindowMMHG   <= INSTIT_MAX_MIN_VEN_PRES_WIDE_LIMIT_MMHG )                                       ? TRUE : FALSE );
+    result &= ( ( nvInstRcrd->minVenPressWideLimitWindowMMHG         <= INSTIT_MAX_MIN_VEN_PRES_WIDE_LIMIT_MMHG )                                 &&
+                ( nvInstRcrd->minVenPressWideLimitWindowMMHG         >= INSTIT_MIN_MIN_VEN_PRES_WIDE_LIMIT_MMHG )                                 ? TRUE : FALSE );
 
     return result;
 }
Index: firmware/App/Modes/ModeTreatmentParams.h
===================================================================
diff -u -r8c8ac9430cbd0a836b51d16a02457575861c5990 -re3f3b5c3552008d58e328ce0d78f2db01cda2b45
--- firmware/App/Modes/ModeTreatmentParams.h	(.../ModeTreatmentParams.h)	(revision 8c8ac9430cbd0a836b51d16a02457575861c5990)
+++ firmware/App/Modes/ModeTreatmentParams.h	(.../ModeTreatmentParams.h)	(revision e3f3b5c3552008d58e328ce0d78f2db01cda2b45)
@@ -114,7 +114,7 @@
 S32  getS32DefaultTreatmentParamEdge( TREATMENT_PARAM_T param, BOOL isMin );
 U32  getU32DefaultTreatmentParamEdge( TREATMENT_PARAM_T param, BOOL isMin );
 F32  getF32DefaultTreatmentParamEdge( TREATMENT_PARAM_T param, BOOL isMin );
-U32  getMinVenousPressureWideValueMMHG( void );
+S32  getMinVenousPressureWideValueMMHG( void );
 
 BOOL isNVInstitutionalRecordInRange( HD_INSTITUTIONAL_RECORD_T* nvInstRcrd );       // Is non-volatile memory institutional record in range
 void setNVInstitutionalRecordToTxParamsRecord( HD_INSTITUTIONAL_RECORD_T* nvInstitutionalRecord ); // Set the recently received institution record from NV to local tx parameters