Carrier 58HDX Service Manual

Also see for 58HDV: Installation instructions Owner's manual

Contents

16GASKETA07828Fig. 16 -- Gasket on Collector Box4. Disconnect pressure switch tubes.5. Disconnect vent pipe from inducer housing outlet byloosening clamp.6. Disconnect drain tube from inducer housing. (See Fig. 6 --14.)7. Remove inducer housing assembly by removing 4 boltsattaching assembly to cell panel.8. Flush inside of collector box with water until dischargefrom condensate trap is clean and runs freely.NOTE: Ensure that drain tube disconnected from inducer housingis higher than collector box opening or water will flow out tube.9. Inspect inside area of collector box for any pieces of foreignmaterials and remove if present.UNIT DAMAGE HAZARDFailure to follow this caution may result in furnace componentdamage.DO NOT use wire brush or other sharp object to inspect ordislodge materials in secondary heat exchangers as failure ofthe secondary heat exchanger may occur. Flush withwater only.CAUTION!10. Reassemble inducer assembly by reversing items 5 through7. Tighten the vent coupling screw(s) to 15 in.--lb.of torque.NOTE: If gasket between inducer housing and collector box isdamaged in any way, it must be replaced. (See Fig. 16.)11. Refer to furnace wiring diagram and connect wires toinducer motor and pressure switch or connectors.12. Reconnect pressure tubes to pressure switch. See diagramon main furnace door for proper location of tubes. Be suretubes are not kinked. (See Fig. 6 -- 14.)13. Turn on gas and electrical supplies to furnace.14. Check furnace operation through 2 complete heat operatingcycles. Check area below inducer housing, vent pipe, andcondensate trap to ensure no condensate leaks occur. If leaksare found, correct problem.FIRE OR EXPLOSION HAZARDFailure to follow the warnings could result in personal injury,death, or property damage.Never test for gas leaks with an open flame. Use acommercially available soap solution made specifically for thedetection of leaks to check all connections.! WARNING15. Check for gas leaks.16. Replace main furnace door.Procedure 6 — Servicing Hot Surface IgniterThe igniter does NOT require annual inspection. Check igniterresistance before removal.1. Turn off gas and electrical supplies to furnace.2. Remove main furnace door.3. Disconnect igniter wire connection.58HDX