Stimmen - 3, Durchschnittliche Bewertung: 3 ( )

Hersteller: Sears Dateigröße: 3.24 mb Dateiname: Unterrichtssprache:

Bottom Mounted Filter Rack 25-24-18 Slide filter clips towards back before removing Refer to Figure 37 and for guidelines to install filters. Furnaces which require larger filter media and have limited clearances on one side of furnace, require a standoff filter rack, see Figure 37, available from your distributor. Standoff Filter Rack UsingOptional Standoff Filter Rack CAUTION If filters are only suitable for heating application, advise homeowner that filter size may need to be increased if air conditioning is added. Addition Of Air Conditioning When a refrigeration coil is used in conjunction with this unit, it must be installed on the discharge side of the unit to avoid condensation on the heat exchanger. The coil installation instructions must be consulted for proper coil location and installation procedures. With a parallel flow arrangement, dampers must be installed to prevent chilled air from entering the furnace. If ma nually operated dampers are used, they must be equipped with a means to prevent operation of either unit unless the damper is in full heat or full cool position. A 3" clearance is required on the right side ofthe furnace in order to run the condensate drain line. Copper, iron or plastic tubing may be used for the condensate drain line. Downflow Furnace Installation Non-Combustible Floor Installation Fabricate a plenum to the dimensions given in Table 11, for the furnace outlet. Plenum should be flanged, approximately 3/4" for support. Note: The three(3) screws in the top panel of the furnace next to the duct flange MUST be removed to provide serviceability of the primary heat exchangers in the downflow installation 1. Position plenum through the floor and set the furnace over the opening in the floor. If necessary, grout around the base to seal air leaks between the base and the floor. Combustible Floor Installation FIRE HAZARD Failure to install unit on noncombustible subbase could result in death, personal injury and/or property damage. Place furnace on noncombustible subbase on downflow applications, unless installing on non combustible floorinq. ;ubbase for Combustible Floor NOTE: The three(3) screws in the top panel of the furnace next to the duct flange MUST be removed to provide serviceability of the primary heat exchangers in the downflow installation Note: When using the subbase for combustible floors, the discharge air duct flanges on the furnace MUST be broken down to provide proper fit up to the subbase. Use duct pliers to bend the duct flanges flat onto the furnace casing. DO NOT bend the duct flanges inward (toward the heat exchangers) as air flow restrictions may occur. The Subbase for Combustible Floors MUST be used when a downflow furnace is set on a combustible floor, even when the furnace is installed on a coil box. 1. Cut the opening in the floor according to Table 11. The hole in the floor must be cut to the dimensions listed in Table 11 since the base is equipped with locating tabs that center the base over the opening. The opening in the base is 11/4 ', shorter and 11/8', narrower than the recommended size of the opening in the floor. This is done to maintain clearance between the floor and the plenum. 2. Fabricate the plenum to the dimensions given in Table 11. Note that the dimensions given are outside dimensions. 25-21-45a [_ 440 01 1020 04 SubbasesforCombustibleFloorsDimensions Subbase forCombustible Subbase for Combustible FloorDimensions Floors Part Number H* J* K** Furnace Subbase NAHH001SB 1511/16 283/4 149/16 16 NAHH002SB 195/16 283/4 183/16 16 NAHH003SB 22_/16 28J/4 2113/16 16 NAHH010SB 243/4 283/4 239/16 161/4 Subbase for Coil Cabinets NAHH004SB 1511/16 209/16 149/16 161/4 NAHH005SB 195/16 209/16 183/16 161/4 NAHH006SB 23 209/16 2113/16 161/4 NAHH009SB 2411/15 209/15 239/15 16 Outside Dimension _* Base Spacer Side To Side 3. Set the base over the opening in the floor, centering it over the opening. Fasten the base to the floor with screws or nails. See Figure 38, Figure 39 and Figure 40. 4. Drop the plenum through the opening in the base. The flange of the plenum should rest on top of the subbase. 5. Position furnace or coil cabinet and furnace on subbase so it aligns between the locating tabs. Furnace Subbase TS Combustible FloorBase Hj 25-20-46 Opening In Base Typical Plenum Opening In Floor For Plenum Dimensions MNPRS T 161/4 145/8 15 13112 15 131/2 161/4 181/4 15 17118 15 171/8 161/4 21//8 15 193/4 15 19_/4 161/4 235/8 15 221/2 15 221/2 161/4 145/8 15 131/2 15 131/2 161/4 181/4 15 171/8 15 171/8 161/4 21//8 15 193/4 15 19_/4 161/4 235/8 15 221/2 15 221/2 iiii!iiiiii;iiiiiiiill .iiiiiiiiiiii;i ._lllllllill_ll!ii!!!!!!!!lllll!ll_iilllll_l_l_l_l_l_l_l_l_l_l_l_l_l_l_l_l_l_l_l_ll__ Coil Cabient Subbase i!i!i!i i ii ii ii ii ii ii ii i i ii ii ii ii ii ii ii; Combustible FloorBase J 25-20-46b A 4 114" Minimum clearance ffomback of hole to wall or other obstruction. iiiiiiiiiiiiiiiiiiiiiiiiiil.i!.I.iil i!iiiii ill!! iiii!iiii;ii;iiiiiiiiiiiiiiiiiiiil;il ...

Herunterladen

Geben Sie zwei Ziffern: