Assessments - 4, GPA: 4
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up to 92.1% Input . 44,000 to 132,000 Btuh Nominal Add.on Cooling . 2 to 5 Tons MODEL NUMBER IDENTIFICATION G43 UF . 24B. 045 Unit Type G = Gas Furnace Nominal Gas Heat Input Series 045 = 44,000 Btuh (12.9 kW) 43 = 90% Minimum AFUE 070 = 66,000 Btuh (19.3 kW) 090 = 88,000 Btuh (25.8 kW) Configuration 110 = 110,000 Btuh (32.2 kW) UF = Up.Flow 135 = 132,000 Btuh (38.7 kW) 1 Cabinet Width Nominal Add.On Cooling Capacity B = 17.1/2 in. (445 mm) 24 = 2 tons (7.0 kW) C = 21 in. (533 mm) 36 = 3 tons (10.5 kW) D = 24.1/2 in. (622 mm) 48 = 4 tons (14.10 kW) 60 = 5 tons (17.5 kW) 1 Indoor coils with the same letter designation will physically match the furnace. FEATURES FEATURES Blower Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pages 13.15 Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pages 9.12 Exhaust Pipe Venting Information . . . . . . . . . . . . . . . . . . . Page 7 Features and Options . . . . . . . . . . . . . . . . . . . . . . . . . . Pages 2.4 Filter Air Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 8 High Altitude Information . . . . . . . . . . . . . . . . . . . . . . . . . . Page 8 Installation Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 8 Model Number Identification . . . . . . . . . . . . . . . . . . . . . . . Page 1 Optional Accessories Selection table . . . . . . . . . . . . . . . . Page 6 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 5 WARRANTY Duralok Plus® Aluminized Steel Heat Exchanger . Twenty years limited warranty. All other covered components . Five years limited warranty. Refer to Lennox Equipment Limited Warranty certificate included with equipment for details. APPROVALS Units certified by CSA International and ratings are certified by GAMA. Units tested and rated according to US DOE test procedures and FTC labeling regulations. Blower data from unit tests conducted in Lennox Laboratory air test chamber. Approved by the California Energy Commission and meets California Seasonal Efficiency requirements and California Nitrogen Oxides (NOx) Standards. ENERGY STAR® certified units are designed to use less energy, help save money on utility bills, and help protect the environment. ISO 9001 Registered Manufacturing Quality System. APPLICATIONS Input capacities of 44,000, 66,000, 88,000, 110,000, and 132,000 Btuh (12.9, 19.3, 25.8, 32.2, and 38.7 kW). Energy efficiency (AFUE) up to 92.1%. Compact cabinet with either side or bottom return air entry. Lennox add-on indoor coils, high.efficiency air cleaners and humidifiers can easily be added to furnace. Shipped factory assembled with all controls installed and wired. Each unit factory test operated to ensure proper operation. DIRECT VENT / NON.DIRECT VENT Furnace can be installed in either Direct Vent or Non.Direct applications. In Direct Vent applications, combustion air is supplied from outdoors and flue gases are discharged outdoors. In Non.Direct Vent applications, combustion air is supplied from indoors and flue gases are discharged outdoors. OPTIONS Termination Kits Facilitates installation of combustion air intake pipe and flue exhaust pipe. Refer to venting table in this bulletin to determine pipe size needed and proper termination kit required. See Specifications table and dimension drawings. Termination Kit . Concentric . Direct Vent Applications Only 1.1/2, 2, or 3 inch (38, 51, or 76 mm) kit contains concentric termination assembly, reducer bushing and 45 degree elbow. Kit requires single hole penetration of roof or wall for installation. Roof Termination Flashing Kit is available for use with 1.1/2 and 2 inch Kits. CSA certified. BDECGFHIMNKJLPO Termination Kits . Wall Assembly Close Couple . Direct Vent Applications Only 2 or 3 inch (51 or 76 mm) kit consists of close-couple, side-by-side PVC piping with galvanized steel wall cover plate for sealing and isolating piping penetration of the wall. Piping spacing and length is sized for proper wall installations. CSA certified. Close Couple WTK . Direct Vent Applications Only 2 or 3 inch (51 or 76 mm) kit contains one insulated faceplate, one insulated exhaust pipe, elbow and fittings. Wall Ring . Direct or Non.Direct Vent 2 inch (51 mm) kit contains 2 stainless steel outside seal caps, 2 galvanized steel inside seal caps, 4 seal rings for the caps and 18 inch (457 mm) insulation sleeve for sealing and isolating intake and exhaust piping penetration of wall. Maintain a maximum of 6 inches (152 mm) between the inlet and outlet openings in the installation of the pipes. Roof Termination Flashing Kit . Direct or Non.Direct Vent 2 or 3 inch (51 or 76 mm) kit contains two neoprene rubber roof flashings for vertical venting through a roof. Vent pipe and insulation not furnished. Each kit contains enough parts for two non.direct vent installations. Also available for use with 1.1/2 inch (use 2 inch flashing) and 2 inch (use 3 inch flash...