Part No: No: Description: Ref. Part No: No: Description: Image 1: Image 2: 21 D6723311 31 C6121807 41 A4002702 81 20175101 141 0121M00038 141 10441601 151 10441501 151 B1376857 181 0131M00272 191 0271F00047 231 M0221461 381 B1141605 391 B1141666 401 PCBKF103 461 0121F00094 521 10123536 521 0130F00038 NS 0259F00040 NS 0159F00012 NS 0130F00022 NS 0130F00028 NS 0130F00081 NS 0130F00087 NS 0130F00101 NS 0130F00103 NS 0130F00133 NS 0130F00142 NS 0130F00186 NS 0130F

Part No: No: Description: Description: RP-508D 7 Chassis 8 RP-508C Chassis Ref. Part No: No: Description: Ref. Part No: No: Description: Image 1: 111 0270F00105P 121 20191603 121 20191604 11 20273509 BASEPAN-C'FLOW FURN (M1, M2, M5, M6, M7, M12, M13, M19, M20, M21, M22) II 20273511 BASEPAN-C'FLOW FURN (M3, M4, M8, M9, M10, M11, M14, M15, M16, M17, M18, M23, M24, M25) 31 0121F00046 BLOWER DECK (M1, M2, M5, M6, M7, M12, M13, M19, M20, M21, M22) 31 0121F00049 BLOWER DECK

Part No: No: Description: Ref. Part No: No: Description: Image 1: Image 1: 11 21 21 31 41 51 51 51 51 51 51 51 51 51 61 61 0130F00008 0151M00014 0151F00000P 10716003 0130F00010 0257F00197 0257F00198 0257F00201 0257F00202 0257F00157 0257F00160 0257F00154 0257F00156 0257F00162 20196402 20196403 61 20196404 71 10735102 131 20170901A 131 20170907A 131 20171001A 131 20171004A 131 20171006A 141 0154F00001P 141 0154F00002P 151 10123517 151 10123534 161

Part No: No: Description: Ref. Part No: No: Description: Image 1: Image 2: 21 D6723311 31 C6121807 41 A4002702 81 20175101 141 0121M00038 141 10441601 151 10441501 151 B1376857 181 0131M00272 191 0271F00047 231 M0221461 381 B1141605 391 B1141666 401 PCBKF103 461 0121F00094 521 10123536 521 0130F00038 NS 0259F00040 NS 0159F00012 NS 0130F00022 NS 0130F00028 NS 0130F00081 NS 0130F00087 NS 0130F00101 NS 0130F00103 NS 0130F00133 NS 0130F00142 NS 0130F00186 NS 0130F

Part No: No: Description: Ref. Part No: No: Description: Image 1: Expanded Model Nomenclature 21 0161M00003P 21 0161F00000P 81 20201902 111 20179308 121 20179311 131 20179312 131 20179313 151 10195518Q 191 0121F00067LG 191 0121F00068LG 191 0121F00073DG 191 0121F00074DG 201 0121F00064LG 201 0121F00065LG 201 0121F00070DG 201 0121F00071DG 281 B1392139 311 22320002 311 22320003 371 22309502 451 M0501301 491 M0570808 501 M0570806 511 M0570807 601 A4691701 621 M0310345

Part No: No: Description: Ref. Part No: No: Description: Image 1: Image 1: 11 21 21 31 41 51 51 51 51 51 51 51 51 51 61 61 0130F00008 0151M00014 0151F00000P 10716003 0130F00010 0257F00197 0257F00198 0257F00201 0257F00202 0257F00157 0257F00160 0257F00154 0257F00156 0257F00162 20196402 20196403 61 20196404 71 10735102 131 20170901A 131 20170907A 131 20171001A 131 20171004A 131 20171006A 141 0154F00001P 141 0154F00002P 151 10123517 151 10123534 161

Seal any unused openings in the venting system; b. Inspect the venting system for proper size and horizontal pitch, as required by the National Fuel Gas Code, ANSI Z223.1 or the CAN/CSA B149 Installation Codes and these instructions. Determine that there is no blockage or restriction, leakage, corrosion and other deficiencies which could cause an unsafe condition; c. In so far as practical, close all building doors and windows and all doors between the space in which the appliance(s) connected t

ATTENTION INSTALLING PERSONNEL Prior to installation, thoroughly familiarize yourself with this Installation Manual. Observe all safety warnings. During installation or repair, caution is to be observed. It is your responsibility to install the product safely and to educate the customer on its safe use. This Forced Air Central Unit Design Complies With Requirements Embodied in The American National Standard / National Standard of Canada Shown Below. ANSI Z21.47•CSA-2.3 Central Furnaces C US ® ©

C US ® RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION. ATTENTION INSTALLING PERSONNEL As a professional installer you have an obligation to know the product better than the customer. This includes all safety precautions and related items. Prior to actual installation, thoroughly familiarize yourself with this Instruction Manual. Pay special attention to all safety warnings. Often during installation or repair it is possible to place yourself in a position which is more hazardous than when the unit

EXISTING CLASS “A” CHIMNEY: Run 4” Class “L” connector from the furnace connection to a positive connection with the class “A” chimney. AN APPROVED 4” LINER MUST BE USED IN CLASS “A” CHIMNEYS. Make sure each joint is firmly locked in place. Make sure the attachment of Class “L” to the Class “A” chimney is secure with sheet metal screws. Seal all joints with high temperature silicone. Class “L” connector should maintain a pitch on rise from the furnace to the chimney of at least .” per foot. A):