Installation, Start-up, Operating andService and Maintenance InstructionsNOTE: Read the entire instruction manual before starting theinstallation.TABLE OF CONTENTSREQUIRED NOTICE FOR MASSACHUSETTS INSTALLATIONSIMPORTANT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Table 1 – Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Table 2 – Minimum Clearances to Combustible Materialsfor All Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Table 3 – Loose Parts Bag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6CODES AND STANDARDS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS PROCE-DURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7AIR FOR COMBUSTION AND VENTILATION . . . . . . . . . . . . . . 8Table 4 – Minimum Free Area Required for Each Combustion AirOpening or Duct to Outdoors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Table 5 – Minimum Space Volumes for 100% Combustion, Ventila-tion and Dilution Air from Outdoors . . . . . . . . . . . . . . . . . . . . . . . 9CONDENSATE TRAP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11CONDENSATE DRAIN CONNECTION . . . . . . . . . . . . . . . . . . . . 13INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Table 6 – Opening Dimensions - In. (mm) . . . . . . . . . . . . . . . . . 18FILTER ARRANGEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Table 7 – Filter Media Pressure Drop (Clean) Versus Airflow - in. w.c.(Pa) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Table 8 – Filter Media Pressure Drop (Clean) Versus Face Velocity-in. w.c. (Pa) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Table 9 – Air Filter Selection and Duct Sizing - In. (mm) . . . . . 21AIR DUCTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22GAS PIPING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Table 10 – Maximum Capacity of Pipe . . . . . . . . . . . . . . . . . . . . 23ELECTRICAL CONNECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . 24Table 11 – Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25ACCESSORIES (See Fig. 37) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27VENTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Table 12 – Vent Termination Kit for Direct Vent (2-pipe) Systems29Table 13 – Approved Combustion-Air and Vent Pipe, Fitting and Ce-ment Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Table 14 – Maximum Equivalent Vent Length - Ft. . . . . . . . . . . 40Table 15 – Deductions from Maximum Equivalent Vent Length - Ft.(M) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40Table 16 – Maximum Allowable Exposed Vent Length in Uncondi-tioned Space - Ft. / M. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43Table 17 – Hanger Spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46AIR DELIVERY - CFM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48Table 18 – Air Delivery - CFM (with filter) . . . . . . . . . . . . . . . . 48Table 19 – Airflow Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51FURNACE CONTROL PROGRAMMINGAND NAVIGATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52Table 20 – System Status Display Codes . . . . . . . . . . . . . . . . . . 52Table 21 – Main Menu Options . . . . . . . . . . . . . . . . . . . . . . . . . . 52SERVICE LABEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54START-UP, ADJUSTMENT, AND SAFETY CHECK . . . . . . . . . 54Table 22 – Test Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56Table 23 – Altitude Derate Multiplier for U.S.A. . . . . . . . . . . . . 57Table 24 – Gas Rate (CU ft./hr). . . . . . . . . . . . . . . . . . . . . . . . . . 58Table 25 – Orifice Size and Manifold Pressure (in. w.c.) for Gas InputRate - 40,000 BTUh to 140,000 BTUh . . . . . . . . . . . . . . . . . . . . 59Table 26 – Orifice Size and Manifold Pressure (in. w.c.) for Gas InputRate - 26,000 BTUh ONLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59SERVICE AND MAINTENANCE PROCEDURES. . . . . . . . . . . . 61ELECTRICAL CONTROLS AND WIRING . . . . . . . . . . . . . . . . . 61CARE AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62WINTERIZATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67TROUBLSHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69PARTS REPLACEMENT INFORMATION GUIDE . . . . . . . . . . . 73MODEL NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73To learn more about this appliance and installation via a mobile device,go to https://www.CAC/BDP.com/NFC or use the QR code below. Toaccess airflow tables or troubleshooting guide on your mobile device goto mlctraining.com/training/techdocs/39/ or use the QR code below.A220936A200352Portions of the text and tables are reprinted from NFPA 54/ANSI Z223.1E, with permission of National Fire Protection Association, Quincy, MA02269 and American Gas Association, Washington DC 20001. This reprinted material is not the complete and official position of the NFPA or ANSIon the referenced subject, which is represented only by the standard in its entirety.PG96MSASingle-Stage, High Efficiency, 4-Way Multipoise35-in. (889 mm), Condensing Gas Furnace