As per title I am using a Viessman Vitodens 111w combi storage boiler with a google nest thermostat connected using opentherm.
there seems to be a delay when hot water is initially called for, before the thermostat kicks in and calls for heat, presumably this is controlled/triggered by the...
I have a double garage conversion done by previous owners but various aspects were bodged.
Particularly the floor.
So I removed all previous floor covering and levelled it with sand.
Then added a DPM and 60mmPIR insulation, covered with a floating (glued) 18mm T&G chipboard floor.
The issue...