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0 TRME" <br /> Dimensional Data <br /> Figure 3. Heat pump-3-4 tons standard efficiency-horizontal airflow supply/return <br /> Note: All dimensions are in inches/millimeters. <br /> 3 3/15' <br /> B1AAM <br /> 231/4' <br /> 591 MIM <br /> RETURN <br /> 143/4' 4 3/4' <br /> 375M M AAAA <br /> D SUPPLY 121 <br /> 131/4' <br /> 337MMA <br /> 17 1/4' 87/5 <br /> 43BMMA 225M M <br /> 3/4-14 NPT <br /> DRAIN CONNECTION <br /> Figure 4. Heat pump-3-4 tons standard efficiency-unit clearance and roof opening <br /> Note: All dimensions are in inches/millimeters. <br /> CLEARANCE <br /> CLEARANCE 36" (914 MM) HORIZONTAL FLOW-18" (457 MM) <br /> DOWNFLOW 36" (914 MM) <br /> \ TYPICAL ROOF OPENING <br /> CLEARANCEFROM <br /> TOP OF UNIT 72" <br /> It <br /> 683/16" 40" 37" <br /> (1732 MM) (1016 MM) (940 MM) �� \ <br /> 441/2 <br /> (1130 MM) <br /> CLEARANCE 48" (1219 MM) \ CLEARANCE 36"(914 MM) <br /> PKGP-PRC013K-EN 65 <br />