version 1.2.0. See ChangeLog

doc/home_assistant/climate.yaml

@@ -1,20 +1,20 @@
  - platform: mqtt
-    name: Thermostat
-    modes:
-      - low
-      - manual
-      - auto
+   name: Thermostat
+   modes:
+     - low
+     - manual
+     - auto
 
-    mode_state_topic: "home/boiler/thermostat_data"
-    current_temperature_topic: "home/boiler/thermostat_data"
-    temperature_state_topic: "home/boiler/thermostat_data"
+   mode_state_topic: "home/boiler/thermostat_data"
+   current_temperature_topic: "home/boiler/thermostat_data"
+   temperature_state_topic: "home/boiler/thermostat_data"
 
-    temperature_command_topic: "home/boiler/thermostat_cmd_temp"
-    mode_command_topic: "home/boiler/thermostat_cmd_mode"
+   temperature_command_topic: "home/boiler/thermostat_cmd_temp"
+   mode_command_topic: "home/boiler/thermostat_cmd_mode"
 
-    mode_state_template: "{{ value_json.thermostat_mode }}"
-    current_temperature_template: "{{ value_json.thermostat_currtemp }}"
-    temperature_state_template: "{{ value_json.thermostat_seltemp }}"
+   mode_state_template: "{{ value_json.thermostat_mode }}"
+   current_temperature_template: "{{ value_json.thermostat_currtemp }}"
+   temperature_state_template: "{{ value_json.thermostat_seltemp }}"
 
-    temp_step: 0.5
+   temp_step: 0.5
 

doc/home_assistant/sensors.yaml

@@ -42,6 +42,12 @@
   unit_of_measurement: '°C'
   value_template: '{{ value_json.wWSelTemp }}'
 
+- platform: mqtt
+  state_topic: 'home/boiler/boiler_data'
+  name: 'Warm Water tapwater flow rate'
+  unit_of_measurement: 'l/min'
+  value_template: '{{ value_json.wWCurFlow }}'
+
 - platform: mqtt
   state_topic: 'home/boiler/boiler_data'
   name: 'Warm Water current temperature'

doc/home_assistant/ui-lovelace.yaml

@@ -14,6 +14,7 @@ views:
           - sensor.warm_water_current_temperature
           - sensor.warm_water_activated
           - sensor.warm_water_3way_valve
+          - sensor.warm_water_tapwater_flow_rate
           - type: divider
           - sensor.boiler_temperature
           - sensor.return_temperature