A hydronic heating system that may depend on pressure in the system for smooth operation. The pressure may be monitored. Pressure in the system may indicate health of the heating system. Certain pressures or variations of pressures may indicate one or more conditions in the system which may be good or adverse. An example of an adverse condition may be leakage of fluid from the system. Analyzes of pressures detected in the heating system may be performed by a computer programmed to indicate conditions of the system that are reflected by the detected pressures.

A receiver, a receiver assembly and a heat pump system. The receiver includes a first pipe, a second pipe and a third pipe leading to the cavity of the receiver, wherein the first pipe, the second pipe and the third pipe connect to a first load unit, a second load unit and a cold and heat source unit, respectively.

A distribution pump arrangement for a bi-directional hydraulic distribution grid can include a hot conduit control valve in a hot conduit; a first distribution pump having an inlet connected to the hot conduit at a first side of the hot conduit control valve, and an outlet connected to the hot conduit at a second side, opposite the first side, of the hot conduit control valve; a pressure difference determining device arranged beyond the second side of the hot conduit control valve and configured to determine a local pressure difference, ?p, between a local pressure of heat transfer liquid in the hot conduit and a local pressure of heat transfer liquid in the cold conduit; and a controller configured to set the distribution pump arrangement based at least in part on ?p.

A receiver, a receiver assembly and a heat pump system. The receiver includes a first pipe, a second pipe and a third pipe leading to the cavity of the receiver, wherein the first pipe, the second pipe and the third pipe connect to a first load unit, a second load unit and a cold and heat source unit, respectively.

A hydronic heating system that may depend on pressure in the system for smooth operation. The pressure may be monitored. Pressure in the system may indicate health of the heating system. Certain pressures or variations of pressures may indicate one or more conditions in the system which may be good or adverse. An example of an adverse condition may be leakage of fluid from the system. Analyses of pressures detected in the heating system may be performed by a computer programmed to indicate conditions of the system that are reflected by the detected pressures.

A building using solar energy for heating and cooling is disclosed. The building comprises a fluid channel arranged for a fluid to transfer absorbed solar heat, a solar heat storage bank to store and supply the solar heat, and a mechanism for directing and controlling the flow of the fluid throughout the building. A insulating glass style solar heat collector (IGSHC) as a building element comprises a insulating glass means; a replaceable solar heat absorber removably received in a slot in the hollow space of the insulating glass, and separates the space into two subspaces; a fluid channel is thermally connected to the solar heat absorber for heat transferring; and a mechanism for directing and controlling the flow of said fluid.

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.

Control housing (1) for a heating or ventilation or air conditioning system, consisting in a housing body (2) closed by a lid assembly and being characterized by the fact that the housing body (2) includes at least one hydraulic control compartment (4) in which a hydraulic equipment-receiving space is formed, the hydraulic control compartment (4) including at least one opening (16, 17) for piping element(s) to pass through, the receiving space further including a unit (27, 28, 36) for maintaining in position at least one piping element. The maintaining unit may include a device (27, 28) for supporting piping element(s) which are formed by at least one pair of bearing surfaces (29) and a unit for locking in position at least one piping element against at least one bearing surface (29).

A heating control device comprising input/output ports, a memory, and a microprocessor. The microprocessor is configured to transmit a first electrical signal to operate an air circulation fan at a first speed and a heating unit in a first configuration to achieve a first temperature rise where less than all of the burners are active. The microprocessor is further configured to obtain a return air temperature, obtain a room air temperature, and determine a temperature difference between the return air temperature and the room air temperature. The microprocessor is further configured to compare the temperature difference to a temperature rise threshold and transmit a second electrical signal to transition the air circulation fan from the first speed to a second speed to achieve a second temperature rise that is less than the first temperature rise when the temperature difference is greater than the temperature rise threshold.

A heating control device comprising input/output ports, a memory, and a microprocessor. The microprocessor is configured to transmit a first electrical signal to operate an air circulation fan at a first speed and a heating unit in a first configuration to achieve a first temperature rise where less than all of the burners are active. The microprocessor is further configured to obtain a return air temperature, obtain a room air temperature, and determine a temperature difference between the return air temperature and the room air temperature. The microprocessor is further configured to compare the temperature difference to a temperature rise threshold and transmit a second electrical signal to transition the air circulation fan from the first speed to a second speed to achieve a second temperature rise that is less than the first temperature rise when the temperature difference is greater than the temperature rise threshold.