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Hybrid Electric Heat Pump Water Heater Installation Guidelines to Provide <br /> Optimal Efficiency <br /> Heater: Not Ducted <br /> Heater: Not Ducted Room size:Smaller than 700 ft3(e.g.Tx 10'x 10'). <br /> Room size:Larger than 700 ft3(e.g.Tx 10'x 10'). Requirements:Full louvered door OR two louvers <br /> Requirements:No additional ventilation needed. top and bottom.See below. <br /> O O <br /> Heater: Not ducted <br /> Room:Small Closet <br /> Requirements:'Air gap under door equal to 18 in (0.75"clearance). <br /> Louver must be located the same height on door as <br /> the air exhaust on heater. <br /> "Heater air exhaust must be positioned towards louver <br /> within one foot of door. <br /> O <br /> O O <br /> Air exhaust <br /> 24" <br /> 12'Max Door <br /> Heater: Ducted with inlet OR outlet duct <br /> Room size:Any size room Heater: Ducted with inlet AND outlet duct <br /> Requirements:Air gap under door equal to 18 in Room size:Any size room <br /> (0.75"clearance) Requirements:No additional ventilation needed. <br /> ri ,ri <br /> O <br /> 0 U <br /> �® 00 <br /> 75" ~ 1 <br /> 24" <br /> NOTE.Heat pump water heater will operate in rooms less than 700 ft'down to 450 ft'but at reduced energy efficiency and reduced performance output.Reduced energy <br /> efficiency and performance has not been evaluated by Rheem Manufacturing and not recommended for optimal performance of the unit.When unit is operated in a small <br /> enclosure,a door or wall with a minimum of 2.3 sq it of louvers is recommended to provide proper air changes for unit function. 3 <br />