The Nautilair® 8.9-inch (225mm) variable-speed pre-mix brushless blowers for gas-fired burner systems deliver a measured air-fuel mixture to optimize combustion and reduce nitrous oxide and CO emissions. The brushless dc motor technology enables virtually maintenance-free performance typically exceeding 20,000 hours in a wide range of applications, including commercial and residential boilers, water heaters, furnaces, and foodservice equipment. They can be used as alternatives to conventional fixed-speed or two-speed blowers, intake damper systems on fixed-speed blowers, or inverter-driven variable-speed blowers. Speed can be adjusted internally with an onboard potentiometer or with an external pulse width modulation or dc control that actively varies blower performance (eliminating a need for complex air intake damper systems). Onboard IntelliGen™ controller electronics integrate a factory-programmed digital signal processor (DSP) and add-on expansion cards, and other options can be specified to meet particular application requirements.

Ametek Technical & Industrial Products, 627 Lake St. Kent, OH 44240; 330-673-3452; 330-677-3306 (fax);

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