The Mercury Series direct-fired makeup air unit has a temperature control that is capable, in some units, of a turndown in excess of 102 to 1. Some of the features of the unit include a cascaded burner, hot-surface ignition, and safety controls with LED status lights. It can be operated individually or connected to an energy management system for monitoring and adjusting the temperature.

ARES, a division of Mars Air Systems, 14716 S. Broadway, Gardena, CA 90248; 800-421-1266; 310-324-3030 (fax); (website).

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