Building (B) comprising a plurality of zones (EZ) and a heating system comprising: a boiler configured to heat heating fluid; at least one radiator in each of the plurality of zones of the building configured to radiantly heat the respective zone using heat of the heating fluid;and a heating system comprising: at least one valve for each of the plurality of zones (EZ), each valve being fluidly connected between at least one radiator of the respective zone (EZ) and the boiler , the valve comprising a valve positioner configured to adjust a valve position of the valve to selectively open and close the valve and adjust an amount of the heating fluid provided to the at least one radiator for the respective one of the plurality of zones (EZ); and a controller operatively connected to the boiler to determine when the boiler is in a deactivated state and operatively connected to each valve , characterised in that the controller is further configured to transmit a deactivation control signal to each valve when the controller determines that the boiler is in the deactivated state, each valve being configured in response to receiving the deactivation control signal to deactivate the valve positioner such that the valve positioner is prevented from adjusting the respective valve position. a boiler configured to heat heating fluid; at least one radiator in each of the plurality of zones of the building configured to radiantly heat the respective zone using heat of the heating fluid;and a heating system comprising: at least one valve for each of the plurality of zones (EZ), each valve being fluidly connected between at least one radiator of the respective zone (EZ) and the boiler , the valve comprising a valve positioner configured to adjust a valve position of the valve to selectively open and close the valve and adjust an amount of the heating fluid provided to the at least one radiator for the respective one of the plurality of zones (EZ); and a controller operatively connected to the boiler to determine when the boiler is in a deactivated state and operatively connected to each valve , characterised in that the controller is further configured to transmit a deactivation control signal to each valve when the controller determines that the boiler is in the deactivated state, each valve being configured in response to receiving the deactivation control signal to deactivate the valve positioner such that the valve positioner is prevented from adjusting the respective valve position. at least one valve for each of the plurality of zones (EZ), each valve being fluidly connected between at least one radiator of the respective zone (EZ) and the boiler , the valve comprising a valve positioner configured to adjust a valve position of the valve to selectively open and close the valve and adjust an amount of the heating fluid provided to the at least one radiator for the respective one of the plurality of zones (EZ); and a controller operatively connected to the boiler to determine when the boiler is in a deactivated state and operatively connected to each valve , characterised in that the controller is further configured to transmit a deactivation control signal to each valve when the controller determines that the boiler is in the deactivated state, each valve being configured in response to receiving the deactivation control signal to deactivate the valve positioner such that the valve positioner is prevented from adjusting the respective valve position. <EOS>