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Resumen del manual
The base must provide a stable support and an airtight seal to the furnace. Allow absolutely no sagging, cracks, gaps, etc. For no reason should return and supply air duct systems ever be connected to or from other heating devices such as a fireplace or stove, etc. Fire, explosion, carbon monoxide poisoning, personal injury and/or property damage could result. Installation Clearances Top/Plenum 1 in. (25 mm) * Front 0 Back 0 Sides 0† Vent 0 Floor 0‡ * Front clearance in alcove installation must be 24 in. (610 mm). Maintain a minimum of 24 in. (610 mm) for front service access. † Allow proper clearances to accommodate condensate trap and vent pipe installation. ‡ For installations on a combustible floor, do not install the furnace directly on carpeting, tile or other combustible materials other than wood flooring. Figure 10 Return Air Guidlines Return air can be brought in through the bottom or either side of the furnace installed in an upflow application. If the furnace is installed on a platform with bottom return, make an airtight seal between the bottom of the furnace and the platform to ensure that the furnace operates properly and safely. The furnace is equipped with a removable bottom panel to facilitate installation. Markings are provided on both sides of the furnace cabinet for installations that require side return air. Cut the furnace cabinet at the maximum dimensions shown on page 2. Furnace applications which include side return air and a condensate trap installed on the same side of the cabinet (trap can be installed remotely within 5 ft.) require either a return air base or field-fabricated transition to accommodate an optional IAQ accessory taller than 14.5”. See Figure 11. Side Return Air (with transition and filter) Figure 11 Page 10 of 48 Issue 1031506501-01 Optional Return Air Base (Upflow Applications Only) FRONT VIEW SIDE VIEW NOTE: Optional side return air filter kits are not for use with return air base. 1 Both the unit return air opening and the base return air opening must be covered by a single plenum or IAQ cabinet. Minimum unit side return air opening dimensions for units requiring 1800 cfm or more of air (W x H): 23 x 11 in. (584 x 279 mm). The opening can be cut as needed to accommodate plenum or IAQ cabinet while maintaining dimensions shown. Side return air openings must be cut in the field. There are cutting guides stenciled on the cabinet for the side return air opening. The size of the opening must not extend beyond the markings on the furnace cabinet. 2 To minimize pressure drop, the largest opening height possible (up to 14 inches) is preferred. Figure 12 panel. Once the bottom panel has been removed, reinstall the bottom cap. See Figure 13. Horizontal Applications WARNING Do not install the furnace on its front or its back. See Figure 14. Removing the Bottom Panel Figure 14 Figure 13 Removing the Bottom Panel This furnace can be installed in horizontal applications with Remove the two screws that secure the bottom cap to the either right or left hand air discharge. furnace. Pivot the bottom cap down to release the bottom Refer to Figure 15 for clearances in horizontal applications. 506501-01 Issue 1031 Page 11 of 48 Horizontal Application Installation Clearances Right-Hand Discharge * Front 0 Back 0 Ends 0 Vent Floor 0 0‡ Top 0 * Front clearance in alcove installation must be 24 in. (610 mm). Maintain a minimum of 24 in. (610 mm) for front service access. ** An 8” service clearance must be maintained below the unit to provide for servicing of the condensate trap unless the trap is mounted remotely. ‡ For installations on a combustible floor, do not install the furnace directly on carpeting, tile or other combustible materials other than wood flooring. Horizontal Application Installation Clearances Right-Hand Discharge * Front 0 Back 0 Ends 0 Vent Floor 0 0‡ Top 0 * Front clearance in alcove installation must be 24 in. (610 mm). Maintain a minimum of 24 in. (610 mm) for front service access. ** An 8” service clearance must be maintained below the unit to provide for servicing of the condensate trap unless the trap is mounted remotely. ‡ For installations on a combustible floor, do not install the furnace directly on carpeting, tile or other combustible materials other than wood flooring. Figure 15 Suspended Installation of Horizontal Unit This furnace may be installed in either an attic or a crawl space. Either suspend the furnace from roof rafters or floor joists, as shown in Figure 16, or install the furnace on a platform, as shown in Figure 17. A horizontal suspension kit (51W10) may be ordered from your distributor or use equivalent. NOTE: Heavy-gauge sheet metal straps may be used to suspend the unit from roof rafters or ceiling joists. When straps are used to suspend the unit in this way, support must be provided for both the ends. The straps must not interfere with the plenum or exhaust piping installation. Cooling coils and supply and return air plenums must be s...
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