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Istruzioni per l'uso Bryant, Modello 394D

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The wire marked * in Figure 3 is removed from the control box and discarded. NOTE: For heating-only connections, See Figure 8. For heating and cooling connections, see Installation Instructions packaged with condensing unit. Line-Voltage Wiring All electrical connections are to made in accordance with the local electrical codes. The unit must be grounded electrically in accordance with National Electric Code and local codes governing such installations. A permanent and uninterrupted or unbroken ground is essential to minimizing personal injury if an electrical fault should occur. A permanent, separately fused electric power supply, complete with manual switch, should be provided for the furnace. Field wiring connections should be made in accordance with the unit wiring diagrams. When making aluminum conductor connections to copper conductors or terminals, use only connectors that are UL approved (marked Al/Cu with the UL symbol) for the application and wire size. Do not reduce wire size to fit connector by cutting off strands. Use proper size connector. After insulation has been stripped from the aluminum conductor, coat the conductor end with corrosion inhibitor (Burndy “Penetrox A” or equivalent), and wire-brush the aluminum surface thru the inhibitor. CAUTION: Do nor wire-brush connectors ;->.nrl lugs. The plating will be broken. After cleaning, recoat the aluminum conductor with inhibitor, and make connection, then coat entire connection. If applicable, wrap the connection for moisture and/or electrical protection. Figure 5—Filter Installed For Bottom Inlet Filters The filters are factory-installed in the bottom of the furnace. This is for bottom inlet application. See Figure 5. For side inlet application, see Figure 2 and Table I for the opening size. Remove the filter and the retainer spring from the bottom opening. Install the retainer spring in the holes provided, one in the blower deck and the other in the retainer spring bracket. See Figure 6. CAUTION: Be sure ihe iïlujr retainer spring is behind rhe flange ol' the casing side. When the side inlet is used, the bottom opening should be properly and permanently sealed. NOTE: Side inlet application of sizes 048100, 060125, 060150, 060175, and 060200 requires use of the appropriate optional external filter rack. See instructions packed with filter rack for installation. i................................._ ..... ..... —•«■ISj A73116 Figure 6—Filter Installed For Side Inlet NOTE: Some units with direct-drive blowers have a shipping bracket. See Figure 5. This bracket should be removed and discarded. Belt-drive units have wood shipping blocks that are to be removed and discarded. STARTUP AND ADJUSTMENT In addition to the following information, refer to “Procedures for Gas Furnace Installation” packaged with the unit. Adjustment of Blower Speed Four-Speed Direct Drive To change motor speed taps, remove the motor tap lead (see Figure 5) and relocate it on the desired terminal on the plug-in terminal block/speed selector located on the blower. TABLE III SPEED SELECTOR Speed Tap No. Common C Hi 1 Med-Hi 2 Med-Lo 3 Lo 4 Belt Drive The blower speed may be changed by opening or closing the motor pulley. When adjusting blower speed, be certain that the pulleys are properly aligned. CAUTION: When adjusting the blower speed, make certain that the temperature rise across the hear, exchanger does not exceed that specified on the rating plate. CARE AND MAINTENANCE WARNING: Because personal injury or damage to t.he furnace may result, maintenance should be performed by qualified persons only. Care of Blower and Motor For long life, economy, and high efficiency; clean accumulated dirt and grease from blower wheel and motor annually. Also clean around bearings and shaft(s) of blower and motor. See label on blower for oiling instructions. Belt Tension Adjust tension on a V-belt so that the belt deflects approximately 3/4 to 1 inch when the pressure from one finger is applied midway between the blower and motor pulleys. Filters Each furnace is shipped with a washable permanent filter. Check every 30 to 60 days. See label on blower for cleaning method. It is not necessary to spray filter with oil. Cleaning Heat Exchanger If it becomes necessary to clean heat exchanger— because of carbon deposits, soot, etc.—shut off gas and electricity. Remove burners and manifold assembly. Remove vent connector and draft diverter. Remove flue baffles from upper heating element flue outlets by removing two screws that secure b'affles in place. Clean flueways with brush and/or vacuum. Replace flue baffles and tighten screws carefully. Replace draft diverter and vent connector. Replace manifold and burners. Connect gas and electricity. Test for gas leaks. WARNING: Never use a match or other open flame to check for gas leaks. Use a soap-aiul-waier solution. A73119 Figure 7—Removing Baffles PILOT Pilot should be checked and cleaned if necessary at ...