A combustion air proving (CAP) system for a burner assembly having a burner for providing heated air to a location, a controller, and a back plate, where outside air is fed to the burner via a conduit. The CAP system is connected to an inlet of the system. An outlet of the system is connected to the burner via the back plate. A damper within the system is translatable between open and closed positions for allowing and blocking air flow, respectively. A sensor measures an air flow parameter of air flow to the burner. The sensor communicates with the controller, which shuts down the burner if the parameter measured by the sensor meets a predetermined threshold value. An assembly installer may test for proper sensor and controller functions by translating the damper to the closed position and blocking outside air flow.

The invention relates to a gas burner arrangement comprising: a gas burner (2) with at least three burner sections (2.1, 2.2, 2.3); a gas tap (3) comprising at least one gas inlet (3.1) coupled with a gas supply line (4) and two gas outlets (3.2, 3.3); a divider entity (5) comprising a divider inlet (5.1) and two or more divider outlets (5.2, 5.3); an on/off valve (6) adapted to open/close a gas line; wherein a first burner section (2.1) is coupled with a first gas outlet (3.2) of the gas tap (3), wherein the second gas outlet (3.3) of the gas tap (3) is coupled with the divider inlet (5.1), wherein a first divider outlet (5.2) is coupled with a second burner section (2.2), wherein the second divider outlet (5.3) is at least indirectly coupled with an inlet (6.1) of the on/off valve (6) and the outlet (6.2) of the on/off valve (6) is coupled with the third burner section (2.3).

A system for automatically shutting off gas flow to a furnace may include an inlet for supplying a gas to the furnace. The furnace may have a housing. The system may include a thermometer positioned inside between the furnace and the housing. A resettable limit switch may be in electrical communication with the thermometer. An electric shutoff valve may be positioned inline between the inlet and the furnace and in electrical communication with the resettable limit switch. A manual shutoff valve may be positioned inline between the inlet and the electric shutoff valve and may manually shut off gas flow to the furnace. When the thermometer reaches a predetermined temperature, the resettable limit switch may actuate the electric shutoff valve thereby shutting off flow of the gas to the furnace. The electric shutoff valve may only be re-opened by manually resetting the resettable limit switch.

A combustion system includes a perforated flame holder, an oxidant source, and an adjustable fuel nozzle. The oxidant source outputs oxidant. The adjustable fuel nozzle outputs fuel onto the perforated flame holder. The perforated flame holder supports a combustion reaction of the fuel and oxidant within the perforated flame holder. The position of the adjustable nozzle relative to the perforated flame holder can be adjusted to achieve selected characteristics of the combustion reaction within the perforated flame holder.

A method for calibrating a position of a control valve within a gas valve assembly for controlling fuel flow to a combustion appliance. The method may include moving the control valve to a second end stop, moving the control valve from the second end stop to a first end stop while counting a number of steps traveled by a stepper motor driving the control valve, and comparing the counted number of steps traveled from the second end stop to the first end stop to a reference value stored in a memory of the controller. If the counted number of steps does not match the reference value, the gas valve assembly may be placed in a lockout mode.

The invention relates to an HVAC monitoring apparatus. The HVAC monitoring apparatus monitors the carbon monoxide, pressure, and temperature inside the air duct network of an HVAC system, directly above the furnace. The apparatus can send detailed information wirelessly through the cloud.

A furnace includes a gas burner exposed to a heat-exchange tube. An inducer is fluidly coupled to the heat-exchange tube and configured to induce draft air through the heat-exchange tube. A regulator is fluidly coupled to the gas burner. A rollout shield is disposed adjacent to the gas burner. A rollout switch is disposed in the rollout shield. The rollout switch is electrically coupled to the regulator. At least one vent is formed through the rollout shield adjacent to the rollout switch. The vent provides a path for a rollout flame to the rollout switch. The at least one vent is disposed on at least two sides of the rollout switch.

A improved system and method for a lighter with a sealed compartment for a battery and LED whereby the lighter is designed to be a conventional lighter with a striker that is a standard push button electrical device that creates a spark where the lighter has a pressure fuel flow valve having a spring loaded valve with a gasket to restrict fuel flow such that a pressure indicator is triggered by decreased pressure as a balloon would do to expand as the pressure reducing effect takes place. Once the pressure valve has expanded, it releases the contact whereby a switch is flipped making a complete current thereby turning on a power cell corresponding to an LED light. The light indicates to the user to purchase a new lighter or refill the existing lighter.

The present disclosure provides a burner management system (BMS) for an industrial gas appliance and method for controlling a warm-up operation of the industrial gas appliance. The BMS and control method only requires a subset of the burners to be provided with flame detectors. In accordance with one aspect, the method involves lighting a supervised burner by providing a fuel gas flow thereto; continuously detecting a flame at the supervised burner indicating that the supervised burner is lit; incrementally lighting non-supervised burners by providing the fuel gas flow thereto when a non-supervised burner status indicates a safe lighting condition, the non-supervised burner status being determined by: measuring a total fuel gas flowing to the plurality of burners; and determining the number of the non-supervised burners with the fuel gas flowing thereto from the measurement of the total fuel gas and a supervised burner status.

The present invention relates to a method for detecting a blockage in an exhaust flue of a gas boiler, comprising: (A) a step for conducting an ignition process according to a user set temperature requested from the outside and performing temperature control to reach the user set temperature; (B) a step for determining whether the current fan RPM of a driven blower exceeds a reference fan RPM; (C) a step for calculating a difference between temperature values of supplied heating water and collected heating water that are detected by temperature sensors when heating water is supplied and determining whether the calculated value is less than a preset reference temperature value when it is determined that the current fan RPM exceeds the reference fan RPM; (D) a step for determining whether the elapsed time elapses a preset setting time based on the determination time point of the step (C) when it is determined that the calculated value is less than the reference temperature value; and (E) a step for displaying, on the outside, a notification that the blockage in the exhaust flue has been identified when it is determined that the elapsed time has elapsed the setting time based on the determination time point of the step (C).