Matches 1 - 50 out of 61 1 2 >
Match Document Document Title
7380522 Energy saving water heater  
A water heater including a water reservoir container having a cold water inlet and a hot water outlet, a combustion chamber adjacent the water container, a burner associated with the container; a...
7167813 Water heater performance monitoring system  
A water heater performance monitoring device for monitoring whether a water heater is functioning optimally or whether it requires service. The device uses maximum heating rates taken from a...
6955301 Water heater and control  
An improved heater and method of controlling the same is provided. The water heater has the combination of a tank for holding water, a heater for heating the water, a controller having logic to...
6880493 Gas water heater and method of operation  
A gas water heater with a tank for holding water including a gas valve mounted below the tank and in fluid communication with a supply of gas. A gas burner is fluidly connected to the gas valve. A...
6877462 Sensorless flammable vapor protection and method  
A water heater control system that prevents the accumulation and accidental ignition of dangerous quantities of unwanted flammable vapors. The system intermittently generates a spark at a...
6694926 Water heater with continuously variable air and fuel input  
A water heater apparatus includes a water conduit having an inlet and an outlet. A primary heat exchanger has a water side defining a portion of the water conduit. A burner is operatively...
6648235 Control method of thermostatic system  
A control method of a thermostatic system for a hot water heater is provided where when the water temperature in the hot water heater is too large, a first electromagnetic valve is controlled to be...
6612267 Combined heating and hot water system  
A combination domestic hot water and space heating system has an instantaneous domestic hot water heat exchanger and a low mass boiler-type heat generator connected in a series by a boiler water...
6606968 Water heater unit  
There is provided a water heater unit realizing antifreezing of a water tube and the like of a heat exchanger without providing a backwind stopper on an exhaust tube. The water heater unit...
6604491 Boiler apparatus  
Disclosed is a boiler apparatus useful for the heating of living and working spaces. The disclosed boiler apparatus incorporates a burner element and controller element that cooperate to provide a...
6591788 Rooftop water heater  
A water heater adapted to be mounted on the rooftop of a building includes a substantially cylindrical tank having a horizontally-oriented longitudinal axis. A U-shaped flue tube has a burner end...
6553946 Multi-function water heater control device  
A single control device is operational to control the flow of gas to a water heater as well as to protect against excessive temperature and pressure. The control device requires only a single...
6293230 Water heaters with flame traps  
A gas water heater including a water container adapted to be heated by a gas burner; and an enclosure surrounding the burner, the enclosure having at least one entryway adapted to allow air and...
6283067 Potable water temperature management system  
A potable water temperature management system includes a device that produces waste heat and that has a primary purpose other than heating potable water. The waste heat from the device is used to...
6237586 Heater trough apparatus  
A heater trough apparatus for heating water used for cleaning. The heater trough apparatus includes a tank mounted upon a plurality of leg members each having an adjustable feet member threaded...
6237544 Water heater and gas burner  
A water heater includes a tank 10 arranged inside a casing 20 with a burner 16 below the tank so that a heat exchange zone 15 surrounding the tank receives the combustion products. The tank 10 is...
6131536 Infrared and gas fluid heater system  
An instantaneous fluid heating system includes a fluid source, a use point for intermittently demanding fluid from the fluid source, an instantaneous IR gas heater, and a temperature sensor...
6055944 Heating device  
A storage water heater including a vessel for accumulating a volume of water which is to be heated, said vessel having water inlet and outlet means, at least one gas burner, an exhaust gas outlet...
6053130 Power vent water heater with electronic control system  
A water heater of the invention includes a water container; a combustion chamber adjacent the water container; a burner associated with the combustion chamber; a flue connected to the combustion...
5941200 Gas-fired water heater having plate-mounted removable bottom end burner and pilot assembly  
A fuel-fired water heater has a combustion chamber disposed beneath the storage tank portion of the water heater. The bottom side wall of the combustion chamber is defined by an annular perforated...
5924390 Water heater with co-located flue inlet and outlet  
A blower draws air through an inlet duct from outside a building or dwelling and injects air and fuel into a sealed combustion chamber where they are ignited and burned within a ceramic crucible...
5620016 Fuel control device, parts therefor and methods of making the same  
A fuel control device, parts therefor and methods of making the same are provided, the control device comprising a housing having a shank portion for interconnecting with a spud carried by a hot...
5357907 Water heater with reduced localized overheating  
A water and/or space heater is provided in which water is circulated to prevent the localized overheating or vaporization thereof.
5305418 Water heater tank arrangement control device and shaft extension therefor and methods of making the same  
A water heater tank arrangement, control device and shaft extension therefor and methods of making the same are provided, the water heater tank arrangement comprising a water heater tank having a...
5233970 Semi-instantaneous water heater with helical heat exchanger  
A semi-instantaneous water heater is disclosed. The water heater generates domestic hot water by transferring heat from the circulating fluid of a modulating boiler. It is particularly suited for...
5199385 Through the wall vented water heater  
The present invention provides a water heater capable of exhausting flue gases from an interior space of a building to an exterior space and is adapted for installation through an upstanding wall....
5197415 Wet-base, down-fired water heater  
A fuel-fired, forced draft water heater is provided with a specially designed burner structure and combustion product flow path that permit the heater to operate with improved fuel efficiency,...
5168546 Device for heating the bacterial proliferation zone of a water heater to prevent legionellosis  
A domestic electric water heater comprises a cylindrical tank having a vertical wall and an inwardly curved bottom, the latter defining with the vertical wall an annular stagnant water zone...
5125068 Apparatus for controlling heating of fluids utilizing adjustable temperature set point  
A temperature control device for a fluid heating vessel senses ambient temperature and controls or adjusts the set point at which power is reduced to an element for heating the fluid in the heating...
4893610 Liquefied petroleum gas and electric water heater  
A liquefied petroleum gas (LPG) and electric water heater which includes a water tank, an electric heater and a separate LPG combustion chamber having a plurality of water conduits disposed within...
4867106 Direct power vented water heater  
A water heater having an insulated water tank with a cold water inlet line, a hot water outlet line and a baffled flue pipe extending vertically through the tank is provided. The flue pipe extends...
4834284 Hot water control  
A system is described for use with a hot water supply for hotels, apartment buildings and similar multi-unit structures, which controls the temperature T 1 of water at the outlet of a water tank...
4771762 Water heater for recreational vehicle  
An improved compact water heater is provided for use in recreational vehicles and the like, wherein the water heater is designed for facilitated assembly and for increased heat transfer capacity to...
4699122 Storage water heater system  
A condensing storage water heater system comprises an inverted burner at the upper end of a water tank or cylinder connected to a vertical flueway passing through the center of the vessel. A finned...
4599993 Temperature sensor  
A hydraulic expansion temperature sensor is provided with such a large surface, by a spiral, meander-like or similar coiling of its sensing tube, that it has an extremely fast reaction time. The...
4543468 Control system for water heater with external heat source  
A control system for an electric domestic water heater operatively associated with an external heat source, such as a heat pump, and including a water storage tank having an internal electric...
4508261 Hot water control and management system  
A hot water control system for providing necessary hot water to a structure at optimum energy saving conditions includes a programmable control system for selectively programming preselected...
4503810 Water heater  
This invention is a water heater wherein a heat source is located outside a hot water storage tank and high temperature hot water can be distributed between the regions of the hot water storage...
4397296 Water heater with submerged combustion chamber  
The water heater has a totally submerged combustion chamber disposed within the lower third portion of the tank. Top and side openings connect respectively to an upwardly extending flue pipe and an...
4385723 Connection assembly  
A connection assembly for connecting an external heating unit to a heater water tank comprising a mounting assembly connected to a tank opening with a passage opening interiorly of the water tank...
4324207 Energy efficient water heater  
Apparatus is disclosed for heating hot water in separate tank stages, and according to predetermined cyclic time patterns. A first smaller hot water tank is heated to a first elevated temperature...
3730144 HOT WATER TANK  
A hot beverage dispenser is provided with an improved tank for storing water and for maintaining the water at the proper hot temperature. The tank is formed in a pair of separable components...
3638619 THERMOSTATICALLY CONTROLLED LIQUID-HEATING TANK  
An apparatus for heating a liquid for use in medical, dental and other services comprising a receptacle for heating the liquid, thermostatic means for determining the temperature of the liquid as...
3565045 LIQUID HANDLING AND DISPENSING APPARATUS  
A tank of the type including an entrapped air cushion and for receiving, heating and dispensing heated liquid is improved through the combination of two cooperating liquid carrying conduits...
3515123 CIRCULATING LIQUID HEATING SYSTEM  
3501257 HEATER FOR AUTOMOBILE COOLING SYSTEM  
3461854 WATER HEATING SYSTEM  
3357421 Thermostatic control for hot water tanks and the like  
3285241 Water heater dip tube construction  
3265299 Excessive temperature cut-off control  
Matches 1 - 50 out of 61 1 2 >