Index: dialin/dg/heat_disinfect.py
===================================================================
diff -u -r26c7b6057f11680681e0a25399b5e5be9b92818d -rb4ea9c08576e7a6064d766a0a5c81e443b3c0b4f
--- dialin/dg/heat_disinfect.py	(.../heat_disinfect.py)	(revision 26c7b6057f11680681e0a25399b5e5be9b92818d)
+++ dialin/dg/heat_disinfect.py	(.../heat_disinfect.py)	(revision b4ea9c08576e7a6064d766a0a5c81e443b3c0b4f)
@@ -17,6 +17,7 @@
 import struct
 from enum import unique
 from logging import Logger
+from .constants import NO_RESET
 from ..common.msg_defs import MsgIds, MsgFieldPositions
 from ..protocols.CAN import DenaliMessage, DenaliChannels
 from ..utils.base import AbstractSubSystem, publish, DialinEnum
@@ -287,3 +288,66 @@
             self.logger.debug("Timeout!!!!")
             return False
 
+    def cmd_state_timer_82c_override(self, ms: int, reset: int = NO_RESET) -> int:
+        """
+        Constructs and sends timer override for heat disinfection timer at 82 C.
+        Constraints:
+            Must be logged into DG.
+            Given interval must greater than 60s
+
+        @param ms: (int) state time in ms
+        @param reset: (int) 1 to reset a previous override, 0 to override
+        @returns 1 if successful, zero otherwise
+        """
+
+        reset_value = integer_to_bytearray(reset)
+        interval_value = integer_to_bytearray(ms)
+        payload = reset_value + interval_value
+
+        message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_dg_ch_id,
+                                              message_id=MsgIds.MSG_ID_HEATERS_PUBLISH_INTERVAL_ORVERRIDE.value,
+                                              payload=payload)
+
+        self.logger.debug("Sending {} ms to 82c state timer".format(ms))
+        # Send message
+        received_message = self.can_interface.send(message)
+
+        # If there is content in message
+        if received_message is not None:
+            # Response payload is OK or not
+            return received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]
+        else:
+            self.logger.debug("Timeout!!!!")
+            return False
+
+    def cmd_state_timer_77c_override(self, ms: int, reset: int = NO_RESET) -> int:
+        """
+        Constructs and sends timer override for heat disinfection timer at 77 C.
+        Constraints:
+            Must be logged into DG.
+            Given interval must greater than 60s
+
+        @param ms: (int) state time in ms
+        @param reset: (int) 1 to reset a previous override, 0 to override
+        @returns 1 if successful, zero otherwise
+        """
+
+        reset_value = integer_to_bytearray(reset)
+        interval_value = integer_to_bytearray(ms)
+        payload = reset_value + interval_value
+
+        message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_dg_ch_id,
+                                              message_id=MsgIds.MSG_ID_HEATERS_PUBLISH_INTERVAL_ORVERRIDE.value,
+                                              payload=payload)
+
+        self.logger.debug("Sending {} ms to 77c state timer".format(ms))
+        # Send message
+        received_message = self.can_interface.send(message)
+
+        # If there is content in message
+        if received_message is not None:
+            # Response payload is OK or not
+            return received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]
+        else:
+            self.logger.debug("Timeout!!!!")
+            return False
Index: dialin/hd/ui_proxy.py
===================================================================
diff -u -r4043dc34e2ab05d243d9f46097c494d1486436ea -rb4ea9c08576e7a6064d766a0a5c81e443b3c0b4f
--- dialin/hd/ui_proxy.py	(.../ui_proxy.py)	(revision 4043dc34e2ab05d243d9f46097c494d1486436ea)
+++ dialin/hd/ui_proxy.py	(.../ui_proxy.py)	(revision b4ea9c08576e7a6064d766a0a5c81e443b3c0b4f)
@@ -1874,7 +1874,7 @@
         dat2 = integer_to_bytearray(data_field2)
 
         payload = alarm + data_type1 + dat1 + data_type2 + dat2
-        message = DenaliMessage.build_message(channel_id=DenaliChannels.ui_to_hd_ch_id,
+        message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_hd_ch_id,
                                               message_id=MsgIds.MSG_ID_ALARM_TRIGGERED.value,
                                               payload=payload)
 
@@ -1888,4 +1888,34 @@
             return received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]
         else:
             self.logger.debug("Timeout!!!!")
-            return False
\ No newline at end of file
+            return False
+
+    def cmd_ui_send_pressure_limits_change_request(self, arterial: int, venous: int, asymmetric_venous: int) -> int:
+        """
+        Constructs and sends a pressure limits request message to the HD.
+
+        @param arterial: (int) date value for arterial pressure limit.
+        @param venous: (int) data value for venous pressure limit.
+        @param asymmetric_venous: (int) data value for venous asymmetric limit.
+        @return: 1 if successful, zero otherwise
+        """
+        art = integer_to_bytearray(arterial)
+        ven = integer_to_bytearray(venous)
+        vena = integer_to_bytearray(asymmetric_venous)
+
+        payload = art + ven + vena
+        message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_hd_ch_id,
+                                              message_id=MsgIds.MSG_ID_UI_PRESSURE_LIMITS_CHANGE_REQUEST.value,
+                                              payload=payload)
+
+        self.logger.debug("Sending UI pressure limits message")
+
+        received_message = self.can_interface.send(message)
+
+        # If there is content...
+        if received_message is not None:
+            # response payload is OK or not OK
+            return received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]
+        else:
+            self.logger.debug("Timeout!!!!")
+            return False