Move boiler-type detection into connect()

Doing this one time at (re)start is enough.

Author: bouwew

plugwise/helper.py

@@ -541,12 +541,6 @@ def _all_appliances(self) -> None:
                     }
                 )
 
-        # Find the connected heating/cooling device (heater_central), e.g. heat-pump or gas-fired heater
-        onoff_boiler = self._modules.find("./module/protocols/onoff_boiler")
-        open_therm_boiler = self._modules.find("./module/protocols/open_therm_boiler")
-        self._on_off_device = onoff_boiler is not None
-        self._opentherm_device = open_therm_boiler is not None
-
         for appliance in self._appliances.findall("./appliance"):
             appl = Munch()
 

plugwise/smile.py

@@ -276,6 +276,14 @@ async def connect(self) -> bool:
                 "Plugwise invalid setup error, check log for more info."
             )
 
+        # Find the connected heating/cooling device (heater_central), e.g. heat-pump or gas-fired heater
+        onoff_boiler = self._domain_objects.find("./module/protocols/onoff_boiler")
+        open_therm_boiler = self._domain_objects.find(
+            "./module/protocols/open_therm_boiler"
+        )
+        self._on_off_device = onoff_boiler is not None
+        self._opentherm_device = open_therm_boiler is not None
+
         # Determine smile specifics
         await self._smile_detect(result, dsmrmain)