Carrier 58MTB Installation, Start-up, And Operating Instructions Manual

Also see for 58MTB: User's information manual Owner's manual Service and maintenance instructions

Table 3—Opening Dimensions (In.)FURNACECASINGWIDTHAPPLICATION PLENUM OPENING FLOOR OPENINGA B C D17-1/2Upflow Applications 16 24-1/8 16-5/8 24-3/4Downflow Applications on Non-Combustible Flooring 15-7/8 19 16-1/2 19-5/8Downflow Applications on Combustible Flooring Using KGASB SubbaseFurnace with or without CD5 or CK5 Coil Assembly or KCAKC Coil Box 15-1/8 19 16-3/4 20-3/8Downflow Applications on Combustible Flooring NOT Using KGASB SubbaseFurnace with CD5 or CK5 Coil Assembly or KCAKC Coil Box 15-1/2 19 16-1/2 2021Upflow Applications 19-1/2 24-1/8 20-1/8 24-3/4Downflow Applications on Non-Combustible Flooring 19-3/8 19 20 19-5/8Downflow Applications on Combustible Flooring Using KGASB SubbaseFurnace with or without CD5 or CK5 Coil Assembly or KCAKC Coil Box 18-5/8 19 20-1/4 20-3/8Downflow Applications on Combustible Flooring NOT Using KGASB SubbaseFurnace with CD5 or CK5 Coil Assembly or KCAKC Coil Box 19 19 20 2024-1/2Upflow Applications 23 24-1/8 23-5/8 24-3/4Downflow Applications on Non-Combustible Flooring 22-7/8 19 23-1/2 19-5/8Downflow Applications on Combustible Flooring Using KGASB SubbaseFurnace with or without CD5 or CK5 Coil Assembly or KCAKC Coil Box 22-1/8 19 23-3/4 20-3/8Downflow Applications on Combustible Flooring NOT Using KGASB SubbaseFurnace with CD5 or CK5 Coil Assembly or KCAKC Coil Box 22-1/2 19 23-1/2 20Fig. 22—Furnace, Plenum, and SubbaseInstalled on a Combustible FloorA96285DOWNFLOWSUBBASESHEET METALPLENUMFLOOROPENINGFURNACE(OR COIL CASINGWHEN USED)COMBUSTIBLEFLOORINGFig. 21—Floor and Plenum Opening DimensionsA96283PLENUMOPENINGCAB DFLOOROPENINGFig. 23—Furnace, Plenum, and CoilAssembly or Coil Box Installedon a Combustible FloorA96284CD5 OR CK5COIL ASSEMBLYOR KCAKCCOIL BOXFURNACESHEET METALPLENUMFLOOROPENINGCOMBUSTIBLEFLOORING20