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Resumen del manual
ROOF TERMINATED EXHAUST PIPE SIDE WALL TERMINATED EXHAUST PIPE (ALTERNATE LOCATION) FURNACE sectional area as the free area of the openings to which they connect. The minimum dimension of rectangular air ducts shall be no less than 3 inches (75 mm). In calculating free area, the blocking effect of louvers, grilles, or screens must be considered. If the design and free area of protective covering is not known for calculating the size opening required, it may be assumed that wood louvers will have 20 Page 8 of 57 Issue 1108 506724-01 Shipping Bolt Removal Units with 1/2 hp blower motor are equipped with three flexible legs and one rigid leg. The rigid leg is equipped with a shipping bolt and a flat white plastic washer (rather than the rubber mounting grommet used with a flexible mounting leg). See Figure 8. The bolt and washer must be removed before the furnace is placed into operation. After the bolt and washer have been removed, the rigid leg will not touch the blower housing. INSTALLATION Setting Equipment WARNING Do not connect the return air ducts to the back of the furnace. Doing so will adversely affect the operation of the safety control devices, which could result in personal injury or death. Units with 1/2 HP Blower Motor Figure 8 WARNING Blower access panel must be securely in place when blower and burners are operating. Gas fumes, which could contain carbon monoxide, can be drawn into living space resulting in personal injury or death. Upflow Applications The gas furnaces can be installed as shipped in the upflow position. Refer to Figure 10 for clearances. Select a location that allows for the required clearances that are listed on the unit nameplate. Also consider gas supply connections, electrical supply, vent connection, condensate trap and drain connections, and installation and service clearances [24 inches (610 mm) at unit front]. The unit must be level from side to side. Tilt the unit slightly (maximum 1/2 in. from level) from back to front to aid in the draining of the heat exchanger. See Figure 9. Allow for clearances to combustible materials as indicated on the unit nameplate. SETTING EQUIPMENT Unit must be level side-to-side in all applications. Tilt the unit slightly (Max. 1/2”) from back to front to aid in the draining of the heat exchanger. Figure 9 506724-01 Issue 1108 Page 9 of 57 WARNING Improper installation of the furnace can result in personal injury or death. Combustion and flue products must never be allowed to enter the return air system or air in the living space. Use sheet metal screws and joint tape to seal return air system to furnace. In platform installations with furnace return, the furnace should be sealed airtight to the return air plenum. A door must never be used as a portion of the return air duct system. 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. 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. Installation Clearances Top Bottom (Floor) Left Side Right Side 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. ‡For inst allations on a combustible floor, do not install the furnace directly on carpeting, tile or other combustible materials other than wood flooring. Side Return Air (with transition and filter) FIGURE 11 Return Air Plenum Transition 20" X 25" X 1" (508mm X635mm X 25mm) Air Filter1.1/2 in. FIGURE 10 Page 10 of 57 Issue 1108506724-01 506724-01 Issue 1108 Page 11 of 57 Removing the Bottom Panel Remove the two screws that secure the bottom cap to the furnace. Pivot the bottom cap down to release the bottom panel. Once the bottom panel has been removed, reinstall the bottom cap. See Figure 13. Horizontal Applications WARNING D...
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