80% thermal efficiency, maximizing seasonal efficiency through the use of a collector box and the power exhauster|A power exhaust that can be rotated 180 deg|The units can be vented vertically or horizontally|A 100% shut-off, intermittent pilot ignition system with continuous retry, at no extra charge|This ignition system allows for all PDP units to be field-converted to propane, if desired|A safety pressure-switch to assure safe venting conditions|Designed to utilize the smallest-diameter vent pipe possible|Wing screws so that the bottom pan can be dropped without a screwdriver or nut driver|A levels hanging mechanism for easy field adjustments after adding accessories that may change the unit's center of gravity|Aluminized steel heat exchanger/burner|Intermittent pilot ignition|115 V 1 ph

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