Assessments - 4, GPA: 4.3
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5 - --Factory- --Shipped Upflow Tube Configuration (Shown with Blower Access Panel Removed) FIELD-INSTALLED FACTORY-SUPPLIED 1.2-IN. CPVC STREET ELBOWS (2) FOR LEFT DRAIN OPTION FIELD-INSTALLED CONDENSATE TRAP FACTORY-SUPPLIED DRAIN TUBE COUPLING (RIGHT DRAIN OPTION) CAUTION! UNIT DAMAGE HAZARD Failure to follow this caution may result in noise or furnace component failure. The blower wheel should not be dropped or bent as balance will be affected. g. Clean wheel per instructions on degreaser cleaner. Do not get degreaser in motor. 9. Reassemble motor and blower wheel by reversing items 8b through 8f. Ensure wheel is positioned for proper rotation. Tighten setscrew to between 140- --160 in.- --lb torque. NOTE: Be sure to attach ground wire to blower housing. 10. Reinstall blower assembly in furnace. 11. Reinstall control box, transformer, and door switch assembly on blower shelf. 12. Reinstall condensate trap and tubing if previously removed. a. Reinstall condensate trap in hole in blower shelf. b. Connect condensate trap drain tubes. See Fig. 5 or tubing diagram on main furnace door for proper tube location. (1.) Connect 1 tube (blue or blue and white striped) from collector box. (2.) Connect 1 tube (violet or unmarked) from inducer housing. (3.) Connect 1 tube (relief port, green or pink) from collector box. NOTE: Ensure tubes are not kinked or pinched, as this will affect operation. c. Connect field drain to condensate trap. 13. Reconnect wires. Refer to furnace wiring diagram and connect thermostat leads if previously disconnected. (See Fig. 16.) NOTE: Refer to Table 3 for motor speed lead reconnection if leads were not identified before disconnection. UNITDAMAGEHAZARDFailurefollowthiscautionmayresultinunitcomponentdamage. HeatingairspeedselectionMUSTbeadjustedtoprovidepropertemperatureriseasspecifiedontheratingplate. CAUTION!58MEC Table 3 – Speed Selection FACTORY GrayBlueCOLOR SPEED ATTACHED TO 5 Cool Yellow 4 Spare 3 High- ---Heat Orange 2 Spare Low Heat/Cont Red 1 Fan ! WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death. Blower access door switch opens 115- -- v power to furnace control. No component operation can occur. Caution must be taken when manually closing this switch for service purposes. 14. Turn on electrical supply. Manually close blower access door switch. Use a piece of tape to hold switch closed. Check for proper rotation and speed changes by performing a component self- --test as shown at the bottom of Service label. (See Fig. 21.) 15. If furnace is operating properly, remove tape to release blower access door switch, replace blower access door, and replace main furnace door. Step 3—CleaningBurners The following items should be performed by a qualified service technician. If the burners develop an accumulation of light dirt or dust, they may be cleaned by using the following procedure: 1. Turn off gas and electrical supplies to furnace. 2. Remove main furnace door. 3. Remove burner box cover. 4. Using backup wrench, disconnect gas supply pipe from furnace gas control valve. 5 CAUTION! UNIT DAMAGE HAZARD Failure to follow this caution may result in damage to furnace. Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. 58MEC 5. Remove wires from gas valve. Note location for reassembly. 6. Remove burner box pressure tube from gas valve regulator fitting. 7. Unplug igniter from harness. 8. Remove igniter leads from slot in manifold grommet. 9. Remove screws that secure manifold to burner box. (See Fig. 6.) NOTE: Do not remove burner box from cell panel. 10. Remove manifold, orifices, and gas valve as 1 assembly. 11. Remove screws attaching burner assembly in burner box. NOTE: Use care when removing and reinstalling burners not to strike the hot surface igniter. 12. Remove burner assembly from burner box. NOTE: All burners are attached to burner bracket and can be removed as 1 assembly. 13. Clean burners with soft brush and vacuum. 14. Reinstall burner assembly, manifold, orifice, and gas valve assembly in burner box. Ensure manifold seal grommet is installed properly and burners fit over orifices. 15. Reinsert the igniter wires in the slot in the manifold grommet, dressing the wires to ensure there is no tension on the igniter itself. (See Fig. 7.) MANIFOLD MOUNTING SCREW MANIFOLD GAS VALVE REGULATOR FITTING GAS VALVE CELL PANEL A96304 Fig. 6 - --Burner Box Assembly IGNITER WIRES MUST BE PLACED IN THIS SLOT A05074 Fig. 7 - --Igniter Wire Placement CAUTION! UNIT COMPONENT ELECTRICAL SHORT HAZARD Failure to follow this caution may result in unit component damage. Igniter wires must be securely placed in slot in manifold grommet or else they could become pinched or severed and electrically shorted. 16. Reconnect wires to gas valve and igniter. Refer to furnace wiring diagram for proper wire location. 17. Reinstall burner box pressure tube to gasvalve regulatorfitting. 1...