Index: firmware/App/Services/PIControllers.h
===================================================================
diff -u -r54f45c387430e440ab4607451fc84dea61f273f1 -rd00ad426d849083922332f832e88e7137a1cad60
--- firmware/App/Services/PIControllers.h	(.../PIControllers.h)	(revision 54f45c387430e440ab4607451fc84dea61f273f1)
+++ firmware/App/Services/PIControllers.h	(.../PIControllers.h)	(revision d00ad426d849083922332f832e88e7137a1cad60)
@@ -33,10 +33,12 @@
 /// Enumeration of PI controllers.
 typedef enum ControllerList
 {
-    PI_CONTROLLER_ID_RO_PUMP = 0,                   ///< RO Pump controller
-    PI_CONTROLLER_ID_PRIMARY_HEATER,                ///< Primary Heater controller
-    PI_CONTROLLER_ID_TRIMMER_HEATER,                ///< Trimmer Heater controller
-    NUM_OF_PI_CONTROLLERS_IDS                       ///< Number of PI controllers
+    PI_CONTROLLER_ID_RO_PUMP = 0,                   ///< RO Pump controller.
+    PI_CONTROLLER_ID_PRIMARY_HEATER,                ///< Primary Heater controller.
+    PI_CONTROLLER_ID_TRIMMER_HEATER,                ///< Trimmer Heater controller.
+    I_CONTROLLER_ID_RO_PUMP_RAMP_UP,                ///< RO Pump controller during ramp up time.
+    PI_CONTROLLER_ID_DRAIN_PUMP,                    ///< Drain Pump controller.
+    NUM_OF_PI_CONTROLLERS_IDS                       ///< Number of PI controllers.
 } PI_CONTROLLER_ID_T;
 
 /// Enumeration of PI controller signals.
@@ -51,8 +53,8 @@
     CONTROLLER_SIGNAL_INTEGRAL_OUTPUT,              ///< I portion of controller output signal
     CONTROLLER_SIGNAL_CONTROL,                      ///< Controller output signal
     NUM_OF_CONTROLLER_SIGNAL                        ///< Number of PI controller signals
-} PI_CONTROLLER_SIGNALS_ID;
-
+} PI_CONTROLLER_SIGNALS_ID;
+
 // ********** public function prototypes **********
 
 void initializePIController( PI_CONTROLLER_ID_T controllerID, F32 initialControlSignal,