Designed for applications requiring a general purpose long life, low maintenance gas burner. Performs equally well firing on-ratio, with excess fuel or with excess air. NMG-H model utilizes preheated air to 8000°F. All models can be converted for oil and gas firing. Mounting plate and tile included with burner. NMG capacity range: 224,000 to 25 million Btu/hr @ 16 oz.
Operation. Combustion air and fuel are channeled into the burner nozzle separately. Since the burner nozzle is sealed into the refractory tile, all combustion air is supplied through the burner. The NMG burners couple a uniform flame front with flame stability over the entire operating range.
NMG burners can be controlled manually or automatically. Automatic control normally employs a Hauck Ratio Regulator for each control zone to maintain air-fuel ratio. An alternate system uses control valves in each of the fuel and air lines, linking the valves to a single motor controller.
Hauck’s hot air Nozzle Mix gas burner (NMG-H) provides fuel savings by utilizing preheated combustion air (to 800°F). Application of the burner in recuperation systems results in an economical approach to energy saving.
Construction. With no moving parts, the burner is virtually maintenance free. Parts subject to heat are either of heat resisting cast iron or stainless steel. The tile is manufactured, dried and cured by Hauck. Special refractory materials and jacketed tiles can be supplied upon request.
Mounting. The burner, mounting plate, and refractory tile are shipped as an assembled unit. The burner can be mounted to fire in any position – horizontal, vertical up, or vertical down. The air connection can be rotated to any of three other positions. The gas inlet is through the back of the burner.
If the pilot and secondary air are to be in line, a 45° No. 1 spark ignited gas pilot, Model No. IPG2411, must be used with NMG 210 through 230 burners to avoid interference. (Alternately, if a 9 o’clock secondary air position is required and it is desired to use the standard No. 1 pilot, Model IPG1411A, the mounting plate may be rotated so as to position the pilot at either the 12 o’clock or 3 o’clock position. Each NMG is equipped with companion flanges on the main air connections to permit easy burner installation and removal and allow the mounting of an orifice plate for reduced air flows, if required.
Pilot. The burner mounting plate includes a port for direct spark or gas pilot ignition system. The pilot is required for initial burner ignition only and is not required to maintain ignition.
Flame Supervision.The NMG mounting plate is provided with a port for monitoring the pilot and main flame, using a UV scanner or other suitable device.
Printable Literature
NMG Fact Sheet
NMG Specifications
NMG Part List
NMG Instructions
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