Standard features include intermittent spark ignition system with timed safety lockout, and redundant gas valves. Units consist of a galvanized enclosure with an elevated gas burner which burns directly in the air stream. The burner consists of non-clogging, stainless steel combustion baffles attached to a aluminum gas supply section. The burner is capable of 100% thermal efficiency with a maximum turndown ratio of 15 to 1. The products of combustion mix with the make-up air which is introduced into the heater intake directly from outside the building. The burner module has a standard horizontal inlet and discharge duct connection and is located upstream of the blower. The heater has a standard horizontal inlet designed to accommodate an outside air inlet hood with standard 2" filter and screen.
To satisfy a variety of installation requirements, packages are available in a number of configurations which include additions of filtered intake with easy access door, a trunklinethat is used to move the air intake away from the grease laden exhaust air. Screened intakes are used to stop debris from being pulled in to the heater, the screened intake attaches directly to the filtered intake or the trunkline.