Index: firmware/App/HDCommon.h
===================================================================
diff -u -rb0b3522f2bd0b5b20ecbfd53c8f55b0e646ffa11 -r101bf85b0b425e919b01b4b7fabcbd15fd5bbde5
--- firmware/App/HDCommon.h	(.../HDCommon.h)	(revision b0b3522f2bd0b5b20ecbfd53c8f55b0e646ffa11)
+++ firmware/App/HDCommon.h	(.../HDCommon.h)	(revision 101bf85b0b425e919b01b4b7fabcbd15fd5bbde5)
@@ -27,7 +27,7 @@
 #define HD_VERSION_MICRO        5
 #define HD_VERSION_BUILD        0
 
-// ********** build switches **********
+// ********** development build switches **********
 
 #ifndef _RELEASE_
 #define UF_TEST_ENABLED                     1           // ultrafiltration test build (hard codes treatment params, re-purposes off/stop buttons)
@@ -48,6 +48,7 @@
     #define DISABLE_PUMP_DIRECTION_CHECKS   1           // do not error on HD pump direction checks
     #define DISABLE_PRESSURE_CHECKS         1           // do not error on HD pressure checks
     #define DISABLE_UF_ALARMS               1           // do not error on HD ultrafiltration checks
+    #define RUN_PUMPS_OPEN_LOOP             1           // BP and DPi pumps will be run open loop (no flow sensor feedback)
 //    #define RAW_FLOW_SENSOR_DATA            1           // test build will not filter flow sensor data
 //    #define READ_FPGA_ASYNC_DATA            1           // test build reads non-priority register page every other time
 //    #define FLOW_DEBUG                      1           // test build sends flow, signal strength, and occlusion readings to debug UART