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INSTALLATION INSTRUCTIONS
A95DF, A93DF, 95G1DF & 92G1DF
Warm Air Gas Furnace / Downflow Air Discharge
This manual must be left with the homeowner for future reference.
This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in
manuals, be alert to the potential for personal injury or death.
CAUTION WARNING
Improper installation, adjustment, alteration, service or
As with any mechanical equipment, personal injury can
maintenance can cause property dama
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UNIT DIMENSIONS − inches (mm) 9/16 (14) COMBUSTION AIR INTAKE Return Air B Opening EXHAUST AIR OUTLET 2−1/16 (52) 2−1/4 9/16 (57) (14) 5 (127) TOP VIEW 1 (25) 27−3/4 Front Panel (705) 19−7/16 9/16 9/16 (494) (14) (14) AIR FLOW ELECTRICAL INLET (Either Side) 33 (838) 2 (51) Either Side CONDENSATE GAS PIPING INLET TRAP CONNECTION (Either Side) (Either Side) 9−1/8 (232) Right 9 6−9/16 (167) Left 6−1/2 (165) (229) Either Side 3/4 Supply 3/4 C (19) (19) Air Supply 19−1/4 3/4 (489) (19) Air
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PARTS ARRANGEMENT CONTROL BOX (Includes integrated control, transformer and door switch) BAG ASSEMBLY BLOWER MOTOR (hidden) BLOWER COMPARTMENT ACCESS PANEL COMBUSTION AIR INDUCER BLOWER DECK PRIMARY LIMIT HEATING COMPARTMENT COLD END HEADER BOX ACCESS HEAT EXCHANGER PANEL GAS VALVE BURNER BOX ASSEMBLY (includes flame sensor, rollout switches and ignitor) FIGURE 1 506725-01 Page 3 of 48 Issue 1109
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Gas Furnace Safety Information This Category IV gas furnace is shipped ready for installation in the downflow position. WARNING The furnace is equipped for installation in natural gas Improper installation, adjustment, alteration, service or applications. A conversion kit (ordered separately) is required maintenance can cause property damage, personal injury for use in propane/LP gas applications. or loss of life. Installation and service must be performed by a licensed professional install
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Locations and Clearances Heating Unit Installed Parallell to Air Handler Unit This furnace is CSA International certified for installation clearances to combustible material as listed on the unit nameplate and in the table in Figure 11. Accessibility and service clearances must take precedence over fire protection clearances. NOTE: When furnace is installed on a combustible floor, a AIR HANDLER GAS UNIT downflow combustible flooring base must be installed between the furnace and the floor. For
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• Air filters must be replaced upon construction completion. • The input rate and temperature rise must be set per the WARNING furnace rating plate. • One hundred percent (100%) outdoor air must be provided Product Contains Fiberglass Wool. for combustion air requirements during construction. Temporary ducting may supply outdoor air to the furnace. Disturbing the insulation in this product during Do not connect duct directly to the furnace. Size the installation, maintenance, or repair will ex
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air is brought into the house for combustion, negative infiltration. If the furnace is located in a building of tight pressure (outside pressure is greater than inside pressure) construction with weather stripping and caulking around the will build to the point that a down draft can occur in the furnace windows and doors, follow the procedures in the “Air from vent pipe or chimney. As a result, combustion gases enter Outside” section. the living space creating a potentially dangerous situatio
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to 25 percent free area and metal louvers and grilles will Air from Outside have 60 to 75 percent free area. Louvers and grilles must If air from outside is brought in for combustion and ventilation, be fixed in the open position or interlocked with the equipment the confined space shall be provided with two permanent so that they are opened automatically during equipment openings. One opening shall be within 12” (305 mm) of the operation. top of the enclosure and one within 12” (305 mm) of th
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INSTALLATION – Setting Equipment NOTE: These units may be equipped with a shipping pad under the blower housing. Remove the shipping pad prior WARNING to operation. Do not install the furnace on its front, back or in the Allow for clearances to combustible materials as indicated horizontal position. See Figure 10. Do no connect the on the unit nameplate. Minimum clearances for closet or return air ducts to the back of the furnace. Doing so will alcove installations are shown in Figure 1
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Installation on Non-Combustible Flooring (Figure 12) 1. Cut floor opening keeping in mind clearances listed on WARNING unit rating plate. Also keep in mind gas supply Improper installation of the furnace can result in personal connections, electrical supply, flue and air intake injury or death. Combustion and flue products must connections and sufficient installation and servicing never be allowed to enter the return air system or air in clearances. See Table 1 for correct floor opening siz
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COMBUSTIBLE FLOORING BASE OPENING SIZE Front to Rear Side to Side Cabinet Catalog Width Number in. mm in. mm FURNACE B Cabinet 11M60 22 559 18 − 3/4 476 (17.5") C Cabinet 11M61 22 559 22 − 3/4 578 (21") COOLING COIL TABLE 2 PROPERLY SIZED FLOOR OPENING PLENUM FURNACE SUPPLY AIR PLENUM PROPERLY COMBUSTIBLE SIZED FLOOR FLOORING BASE OPENING FIGURE 14 Return Air Opening - Downflow Units Return air may be brought in only through the top opening of a furnace installed in the downflow position. The f
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Filters Pipe & Fittings Specifications This unit is not equipped with a filter or rack. A field provided All pipe, fittings, primer and solvent cement must conform filter is required for the unit to operate properly. Table 3 lists with American National Standard Institute and the American recommended filter sizes. Society for Testing and Materials (ANSI/ASTM) standards. The solvent shall be free flowing and contain no lumps, A filter must be in place whenever the unit is operating. undissolved
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vent pipe hangers. Uniformly apply a liberal coat of PVC primer for PVC or use a clean dry cloth for ABS to clean IMPORTANT inside socket surface of fitting and male end of pipe to depth of fitting socket. The exhaust and intake connections are made of PVC. Use PVC primer and solvent cement when using PVC Canadian Applications Only vent pipe. When using ABS vent pipe, use transitional Pipe, fittings, primer and solvent cement used to vent solvent cement to make connections to the PVC fitting
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Joint Cementing Procedure Venting Practices All cementing of joints should be done according to the specifications outlined in ASTM D 2855. Piping Suspension Guidelines NOTE: A sheet metal screw may be used to secure the intake pipe to the connector, if desired. Use a drill or self SCHEDULE 40 PVC − 5’ tapping screw to make a pilot hole. all other pipe* − 3’ DANGER * See Table 4 for allowable pipe. DANGER OF EXPLOSION! NOTE: Isolate piping at the point where it exits the outside wall or roo
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1. In areas where piping penetrates joist or interior walls, Use the following steps to correctly size vent pipe diameter. hole must be large enough to allow clearance on all sides of pipe through center of hole using a hanger. 2. When furnace is installed in a residence where unit is shut down for an extended period of time, such as a 045, 070, vacation home, make provisions for draining condensate 090, 110 1 collection trap and lines. Furnace capacity? Exhaust Piping (Figure 20) Route piping t
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A95DF / 95G1DF and A93DF / 92G1DF Maximum Allowable Intake or Exhaust Vent Length in Feet *Size intake and exhaust pipe length separately. Values in table are for Intake OR Exhaust, not combined total. Both Intake and Exhaust must be same pipe size. Standard Termination at Elevation 0 − 10,000 ft. 2" Pipe 2−1/2" Pipe 3" Pipe Number Of 90° Model Model Model Elbows Used 045 070 090 110 045 070 090 110 045 070 090 110 1 61 46 24 100 80 43 127 127 108 108 2 56 41 19 95 75 38 122 122 103 103 3 51 36
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TYPICAL EXHAUST PIPE CONNECTIONS Pipe size determined in Table 7. 2” 2” 2” 2” 2” or 3” TRANSITION INTAKE EXHAUST DO NOT transition from smaller *2” to larger pipe size in horizontal TOP VIEW runs of exhaust pipe. * When transitioning up in pipe size, use the shortest length of 2” PVC pipe possible. NOTE: Exhaust pipe and intake pipe must be the same diameter. FIGURE 20 TYPICAL INTAKE PIPE CONNECTIONS (DIRECT VENT APPLICATIONS) 2” 2” Pipe size determined in Table 7. 2” 2” 2” or TRANSITION 3” *
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Intake Piping General Guidelines for Vent Terminations This furnace may be installed in either direct vent or non- In Non-Direct Vent applications, combustion air is taken from direct vent applications. In non-direct vent applications, indoors and the flue gases are discharged to the outdoors. when intake air will be drawn into the furnace from the This unit is then classified as a non-direct vent, Category IV surrounding space, the indoor air quality must be considered. gas furnace. Guidelines
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VENT TERMINATION CLEARANCES FOR NON−DIRECT VENT INSTALLATIONS IN THE USA AND CANADA INSIDE CORNER DETAIL G H A D E B L B B I C Fixed Operable Fixed Closed M Closed F Operable B K J A B AREA WHERE TERMINAL AIR SUPPLY INLET VENT TERMINAL IS NOT PERMITTED 1 2 US Installations Canadian Installations A = Clearance above grade, veranda, 12 inches (305mm) or 12 in. 305mm) 12 inches (305mm) or 12 in. 305mm) porch, deck or balcony above average snow accumulation. above average snow accumulation. B = Clea
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VENT TERMINATION CLEARANCES FOR DIRECT VENT INSTALLATIONS IN THE USA AND CANADA INSIDE CORNER DETAIL G H A D E B L B B I C Fixed Operable Fixed Closed M Closed F Operable B K J A B AREA WHERE TERMINAL AIR SUPPLY INLET VENT TERMINAL IS NOT PERMITTED 1 2 US Installations Canadian Installations A = Clearance above grade, veranda, 12 inches (305mm) or 12 in. 305mm) 12 inches (305mm) or 12 in. 305mm) porch, deck or balcony above average snow accumulation. above average snow accumulation. B = Clearanc
