The flameless heater system includes an energy source comprising a diesel engine configured to create volumes of air, a hydraulic system to control engine loading for heat generation and for air moving, and a control system, operatively coupled with the energy source and the hydraulic system to control at least one of a speed of the diesel engine, a loading of the diesel engine, or a fan speed.

A water heater can include a heat source and a heat exchanger that transfers heat to the water. A header attached to the heat exchanger provides an inlet and an outlet for water to flow into and out of the heat exchanger. The header can also include an anode assembly that releasably attaches to the header. The anode assembly can be located at a bottom of the header so that an anode in the anode assembly remains in contact with the water when water is flowing through the heat exchanger.

A tankless water heater comprising a bare wire heating element is disclosed which is connected to an electronic temperature control system. At least one sensor is furthermore connected to the electronic temperature control system. A fluid heating chamber is made of insulating non conductive material wherein the heating element is located. At least one switch is connected to at least one bare wire heating element and to a phase of an AC line. An electrode system and an electronic detecting circuit are interconnected. The electrode system is arranged in a fluid channel, in a short distance from the bare wire heating element which acts like electrode 1. The electrode 2 of the electrode system is made from a conductive tube material hydraulically connected to a throttle valve made from non conductive material to insulate the electrode 2 from the grounded collector. The electrode 2 is electrically connected to a electronic control system via a conductive material.

A gas manifold allows each distribution chamber to be fed with fuel gas at an appropriate flow rate irrespective of an increase in the number of distribution chambers included in the gas manifold. A gas manifold distributes fuel gas flowing in through an inlet to a plurality of distribution chambers through a main channel. The main channel includes a flow guide that guides the fuel gas toward a maximum distribution chamber and reduces the fuel gas flowing into other distribution chambers. This allows fuel gas at a sufficient flow rate to be fed more easily to the maximum distribution chamber than to the other distribution chambers for a larger number of distribution chambers included in the gas manifold, allowing the plurality of distribution chambers to be fed with fuel gas at appropriate flow rates.

A heat pump assembly (100) arranged to be connected to a thermal energy circuit (300) comprising a hot conduit (302) configured to allow thermal fluid of a first temperature to flow therethrough, and a cold conduit (304) configured to allow thermal fluid of a second temperature to flow therethrough, the second temperature is lower than the first temperature, and a cooling machine assembly (200) arranged to be connected to a thermal energy circuit (300) comprising a hot conduit (302) configured to allow thermal fluid of a first temperature to flow therethrough, and a cold conduit (304) configured to allow thermal fluid of a second temperature to flow therethrough.

A water heater can include a heat source and a heat exchanger that transfers heat to the water. A header attached to the heat exchanger provides an inlet and an outlet for water to flow into and out of the heat exchanger. The header can also include an anode assembly that releasably attaches to the header. The anode assembly can be located at a bottom of the header so that an anode in the anode assembly remains in contact with the water when water is flowing through the heat exchanger.

An expansion tank control device and a water heater and expansion tank including the expansion tank control device. The device may include a water flow sensor arranged in a water inlet waterway of a water heater to detect water flow in the water inlet waterway. The device can further include a controller outputting a driving electric signal after receiving a first electric signal output by the water flow sensor, and a reset electric signal after receiving a second electric signal output by the water flow sensor. The expansion tank can include an electric driving part arranged on a shell of the expansion tank, and a push plate on a driving end of the part, a controlled end of the electric driving part driving the push plate to move toward the expansion tank after receiving the driving electric signal or away from the expansion tank after receiving the reset electric signal.

An expansion tank control device and a water heater and expansion tank including the expansion tank control device. The device may include a water flow sensor arranged in a water inlet waterway of a water heater to detect water flow in the water inlet waterway. The device can further include a controller outputting a driving electric signal after receiving a first electric signal output by the water flow sensor, and a reset electric signal after receiving a second electric signal output by the water flow sensor. The expansion tank can include an electric driving part arranged on a shell of the expansion tank, and a push plate on a driving end of the part, a controlled end of the electric driving part driving the push plate to move toward the expansion tank after receiving the driving electric signal or away from the expansion tank after receiving the reset electric signal.

A water heater system includes a water heater having a first water outlet and a second water outlet. The water heater system further includes a flow detection device coupled to the first water outlet to detect a water flow through the first water outlet. The water heater system also includes a flow control valve fluidly coupled to the second water outlet. The flow control valve is configured to control a flow of water through the second water outlet based on whether the water flow through the first water outlet is detected by the flow detection device.

A tankless water heater for heating a continuous supply of water. The tankless water heater includes a housing, a water inlet and outlet ports, a heater assembly located within the housing and defining a water flow path having a heating element located therein and being coupled to the water inlet and outlet ports. A flow sensing device measures the water's flow condition between the water inlet and outlet ports. The water heater further includes a leak detection system having a water collection area defined by a portion of the housing, a water sensor configured to detect the presence of water in the collection area and being coupled to a water stoppage valve that is moveable between an open position and a closed position in response to a signal from the water sensor indicating water being present in the water collection area.