{HEAD ~ The method} 1, wherein {TAIL ~ the memory} contains a calculation rule from which a time period for the operation of the heat source is calculated as a consequence of the input of the common offset 
wherein
{ HEAD ~ The method } 1 , wherein { TAIL ~ the memory } contains a calculation rule from which a time period for the operation of the heat source is calculated as a consequence of the input of the common offset
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH