The QuietComfortâ„¢ DLX 90 natural gas furnaces are ready for upflow installations out of the box, with all parts included for downflow or horizontal conversions. They are dual-certified for one- or two-pipe venting and feature single-stage gas valves and single-stage ignition control. Heating inputs range from 50,000 to 125,000 Btuh, including a high-airflow 100,000-Btuh model for five-ton applications. LP gas conversion kits are available. New remote flame sensing offers the added safety of proving the flame lights all the way across the burners. A troubleshooting LED fault indicator can diagnose practically all system-related malfunctions and can be easily viewed through a sight glass in the blower door. The furnaces come with 24- and 115-V connections for easy humidifier attachment. The furnaces have an efficiency rating of up to 92 percent AFUE.

Heil, International Comfort Products, P.O. Box 128, Lewisburg, TN 37091; 931-270-4222; 931-270-4166 (fax);

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