The MAXFire® HC (High Capacity) gas igniter is a Class 1 igniter designed to allow the boiler to operate on coal or gas. The MAXFire® igniter is easily installed as a retrofit into a 6” or greater mount tube.
MAXFire® HC gas igniters consist of four major components: main tip, pilot igniter, HESI Spark Rod and HESI Power Pack. Separate flame detector is needed for flame detection.
The main igniter tip is arranged to surround the flame of the pilot igniter for ease of ignition and stable operation. The main igniter shares a gas fuel supply with the pilot igniter through a pressure regulator, therefore, the pilot igniter is on whenever the main igniter is on and that ensures stable operation of the main igniter.
The pilot igniter consists of a guide tube, a gas transport tube, a spark rod, and a stainless steel diffuser for pilot stabilization. The guide tube houses the spark rod and the gas transport tube, which are easily removed from the guide tube for maintenance purposes by releasing a “V” band retainer, requiring no tools. Cooling/combustion airflow is directed down the guide tube to support and maintain the primary combustion zone during operation. The controlled mixture of fuel and air in the primary combustion zone results in a highly reliable, stable igniter flame. While out of service, airflow cools the igniter and prevents debris from migrating into the end of the guide tube.
MAXFire® HC gas igniters come standard with Forney’s High Energy Spark Igniter (HESI) as the spark source. The HESI produces a powerful 12-joule spark approximately three times per second at the primary combustion zone. The HESI spark tip is a non-fouling, surface-gap tip which is replaceable as a unit by a threaded connection.
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