Rheem classic 90 plus upflow manual

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A burner orifice change may still be required. See Installation Instructions for more information. NOTE: For Canadian installations only, an optional derate ( Rheem Classic Plus Series Ultra Low NOx 80% AFUE R801T Upflow Gas Furnace · FIRST CERTIFIED, lowest emission furnace in the industry* · Environmentally friendly A variety of cooling coils and plenums designed to use with the Classic 90 Plus gas furnaces are available as optional accessories for air conditioning models. 7 90 HIGH EFFICIENCY UPFLOW GAS FURNACES The Rheem Value Series 90 High solid state time on/off blower control; limit controls; manual shut-off valve; The Rheem Classic® Series 90 Plus with Dual Comfort. Control™ line of upflow gas furnaces are designed for utility rooms, closets, alcoves, or attics. REFER TO INSTALLATION INSTRUCTIONS Furnaces can be converted to two different upflow configurations as All 90 Plus Gas Furnaces cannot be com-. Available in upflow and downflow/horizontal models, the Rheem Classic 90 PLUS gas furnace is as flexible as it is efficient. COMPREHENSIVE RANGE OF CAPACITIES.Classic 90 Plus High Efficiency Upflow Gas Furnaces RGRA- Series Features. The Rheem High Efficiency line of upflow gas furnaces are designed for utility