A computer implemented method for post installation adjustment of a climate system including determining a desired change of at least one radiator flow, determining a change of at least one Cv-value required to achieve the desired flow change, using a software implemented model of the system to automatically calculate a set of radiator flow changes resulting from the change of at least one Cv-value, identifying a subset of radiator flow changes from the set of radiator flow changes which have a perceivable impact on system performance, and repeating the above steps until the subset is empty.

The iteration allows an operator to determine a complete set of Cv adjustments that will provide the desired radiator flow change(s) while (as far as possible) leaving other radiator flows unchanged.

A thermostatic actuator for a radiator valve includes a thermostat mechanism configured to passively open the valve when an environmental temperature is less than a set point and to close the valve when the temperature is greater than the set point. A set point adjustment mechanism draws power from a power supply to selectively drive unitary movement of the thermostat mechanism to adjust the set point. Multiple actuators are used in a zoned radiant heating system in which a controller is operatively connected to the set point adjustment mechanism of each actuator to selectively transmit a control signal to actuate the set point adjustment mechanism to drive unitary movement of the respective thermostat mechanism to adjust the respective set point.

This invention relates to valves (2) for heat exchanger thermostats (1), thermostat heads (3) for a heat exchanger thermostat (1) and a heat exchanger thermostat (1) comprising a valve (2) and a thermostat head (3). According to the invention, temperature sensitive means (10) are provided on or within said valve (2) and/or said thermostat head (3) influencing a throttling behavior of said valve (2) depending on a temperature of a fluid controlled by said valve (2). By this, a premature throttling of the fluid controlled by said valve (2) due to heat transfer between the fluid and the thermostat head (3) may be prevented. Thus, a good ambient temperature may be established which comes closer to the desired room temperature.

The invention concerns a thermostatic radiator valve (TRV) the TRV comprising: a communication link to one or more other TRVs in the room (9); an input interface configured to allow a user to enter a defined temperature setpoint (T1) or acquire the defined temperature setpoint (T1) from the one or more other TRVs;
wherein the TRV is further configured to synchronize the defined temperature setpoint (T1) with the one or more other TRVs defined in a synchronization list.

The invention concerns a thermostatic radiator valve (TRV, 21), comprising an aperture to adjust a flow of heating fluid from a heat generator (10) entering a heat emitter (11) in a first room (101) based on a first TRV-defined temperature setpoint, the TRV (21) comprising: a communication link (31) to a processing unit connected to a thermostat (60) controlling the heat generator (10); an input interface configured to one or more of: allow a user to enter or acquire the first TRV-defined temperature setpoint;
wherein the TRV (21) is further configured to receive from the processing unit a first aperture setting, the first aperture setting being defined as a function of a temperature configuration model available at the processing unit.

The invention concerns a thermostatic radiator valve (TRV) (21) configured to adjust a flow of heating fluid from a heat generator (10) entering a heat emitter (11) in a room (101) with a room temperature (Tr1) based on a temperature setpoint, the heat generator (10) and the heat emitter (11) configured to heat a building (9), the TRV (21) comprising: a communication link (41) to a thermostat (60) controlling the heat generator (10) based on a thermostat temperature setpoint (61); an input interface configured to allow a user to enter a defined temperature setpoint or acquire the defined temperature setpoint (T2);
wherein the TRV (21) is configured to send to the thermostat (60) a command to trigger the heat generator (10) if a difference between the defined temperature setpoint (T2) and the room temperature (Tr1) has a same sign as a gradient of temperature to be generated by the thermal energy generator and the thermostat (60) has reached the thermostat temperature setpoint (61).

A user interface for a thermostat that controls a radiator valve can include a user input member that is movable from a home position to a set point increase or decrease position to increase or decrease a set point temperature of the thermostat. In some embodiments, a return mechanism returns the user input member to the home position after being released from one of the set point increase and decrease positions. The user interface can include an indicator panel and controller that controls the indicator panel to provide an indication of when the set point temperature of the thermostat is being adjusted. The user interface can also include a lockout controller that prevents further set point temperature adjustments using the user interface when the set point temperature differs from the environmental temperature by a specified amount.

A heating fluid control system determines the aggregated demand for heating fluid from a plurality of sources of demand in a building and deactivates a boiler that provides the heating fluid when the aggregated demand is zero. The sources of demand can include radiators and domestic hot water fixtures. Valves that control the flow of heating fluid from the boiler to these sources of demand can transmit signals representative of the position of the valve. A controller can use these signals and other signals to determine the demand for heating fluid from each source of demand. The controller evaluates the signals to determine the aggregate system demand. And after deactivating the boiler, the controller can reactivate the boiler when the aggregate system demand is determined to be non-zero. Methods of using such heating systems are also disclosed.

A heating system used in a building includes thermostatic radiator valves, each fluidly connected between at least one radiator in a zone of the building and a boiler. A controller is operatively connected to the valves to deactivate the valve positioners when the controller determines that valve activity is likely to have little to no effect on the output of the respective radiator and/or active heating of the building is not desired. For example, the controller determines when the boiler is deactivated and sends a deactivation control signal to the valves operative to prevent the valve positioners are prevented from adjusting the respective valve position. In another example, the controller sends the deactivation control signals to the valves at the onset of preprogrammed low usage periods of the heating system. Methods of using such heating systems are also disclosed.

Embodiments of a thermostat for heating, air-conditioning and/or ventilation systems are provided. The thermostat includes a base body, a temperature sensor arranged on the base body, an actuator arranged on the base body, and a housing that at least partially encloses the base body. A display is made possible in that the housing in the area of the base body is at least in parts made of a translucent material.