Index: dialin/common/alarm_defs.py
===================================================================
diff -u -r0f2706175dc86651605a7c74126c9fea13f7f7d0 -r4fc20e3fff079edc7e23f2d5758ae69dcad04ffb
--- dialin/common/alarm_defs.py	(.../alarm_defs.py)	(revision 0f2706175dc86651605a7c74126c9fea13f7f7d0)
+++ dialin/common/alarm_defs.py	(.../alarm_defs.py)	(revision 4fc20e3fff079edc7e23f2d5758ae69dcad04ffb)
@@ -338,7 +338,7 @@
     ALARM_ID_DG_CLEANING_MODE_INLET_WATER_PRESSURE_TOO_LOW = 315
     ALARM_ID_DG_ACID_CONCENTRATE_PUMP_PARK_FAULT = 316
     ALARM_ID_DG_BICARB_CONCENTRATE_PUMP_PARK_FAULT = 317
-    ALARM_ID_HD_AIR_PUMP_TIMEOUT = 318
+    ALARM_ID_AVAILABLE_2 = 318
     ALARM_ID_DG_CHEM_DISINFECT_FLUSH_FLUSH_SAMPLE = 319
     ALARM_ID_DG_CHEM_DISINFECT_FLUSH_SAMPLE_TIMEOUT = 320
     ALARM_ID_DG_OUTLET_UV_REACTOR_NOT_HEALTHY = 321
Index: dialin/common/msg_defs.py
===================================================================
diff -u -r1f6af0afb3388e3a491e1446f336fff9997a3dba -r4fc20e3fff079edc7e23f2d5758ae69dcad04ffb
--- dialin/common/msg_defs.py	(.../msg_defs.py)	(revision 1f6af0afb3388e3a491e1446f336fff9997a3dba)
+++ dialin/common/msg_defs.py	(.../msg_defs.py)	(revision 4fc20e3fff079edc7e23f2d5758ae69dcad04ffb)
@@ -164,7 +164,9 @@
     REQUEST_REJECT_REASON_DG_RO_ONLY_MODE_INVALID_PARAMETER = 55
     REQUEST_REJECT_REASON_DG_RO_ONLY_MODE_INVALID_PAYLOAD_LENGTH = 56
     REQUEST_REJECT_REASON_TREATMENT_CANNOT_BE_RESUMED = 57
-    NUM_OF_REQUEST_REJECT_REASONS = 58
+    REQUEST_REJECT_REASON_EXCEEDS_MAXIMUM_HEPARIN_VOLUME = 58
+    REQUEST_REJECT_REASON_CHEM_DISINFECT_NOT_ENABLED_INST_CONFIG = 59
+    NUM_OF_REQUEST_REJECT_REASONS = 60
 
 
 class MsgFieldPositions:
Index: dialin/hd/institutional_record.py
===================================================================
diff -u -r0f2706175dc86651605a7c74126c9fea13f7f7d0 -r4fc20e3fff079edc7e23f2d5758ae69dcad04ffb
--- dialin/hd/institutional_record.py	(.../institutional_record.py)	(revision 0f2706175dc86651605a7c74126c9fea13f7f7d0)
+++ dialin/hd/institutional_record.py	(.../institutional_record.py)	(revision 4fc20e3fff079edc7e23f2d5758ae69dcad04ffb)
@@ -56,6 +56,7 @@
     _DEFAULT_MAX_HEPARIN_DISP_RATE_MLPHR =          1.0
     _DEFAULT_MIN_HEPARIN_BOLUS_VOLUME_ML =          0.0
     _DEFAULT_MAX_HEPARIN_BOLUS_VOLUME_ML =          2.0
+    _DEFAULT_ENABLE_CHEM_DISINFECT =                1
 
     _RECORD_SPECS_BYTES = 12
     _DEFAULT_TIME_VALUE = 0
@@ -330,6 +331,7 @@
                  'max_heparin_disp_rate_mlphr': ['<f', self._DEFAULT_MAX_HEPARIN_DISP_RATE_MLPHR],
                  'min_heparin_bolus_volume_ml': ['<f', self._DEFAULT_MIN_HEPARIN_BOLUS_VOLUME_ML],
                  'max_heparin_bolus_volume_ml': ['<f', self._DEFAULT_MAX_HEPARIN_BOLUS_VOLUME_ML],
+                 'enable_chemical_disinfect': ['<i', self._DEFAULT_ENABLE_CHEM_DISINFECT],
                  'calibration_time': ['<i', self._DEFAULT_TIME_VALUE],
                  'crc': ['<H', self._DEFAULT_CRC_VALUE]}})