Flame detector heads, igniters, and other equipment mounted at the boiler front typically require a continuous flow of low-pressure air. Forney’s skid-mounted blower assembly provides air to these burner-front devices.
This air flow serves two purposes:
The complete Blower Assembly is factory wired and tested. The motor starter cabinets contain hard-wired, fan-transfer logic in the event low blower outlet pressure is sensed by the two pressure switches.
A typical skid-mounted blower assembly consists of the following components (see drawing):
The blower arrangement is a direct drive (i.e., arrangement 4) type; however, other arrangements are available for special applications. The blower outlet flange is full-seal welded and matches ANSI Class 125/150 hole pattern. The blower outlet connection is a dual taper design for low noise levels. The blower wheels are a radial design which develop a flat curve for stable performance even at low turndown ratios.