Carrier 58EFB Installation, Start-up, And Operating Instructions Manual

Also see for 58EFB: Installation, start-up, and operating instructions User's information manual

Contents

Carrier 58EFB Installation, Start-up, And Operating Instructions Manual Manual pdf 9 page image

16. Replace burner removal covers on respective sides of furnace.17. Remove front blower door and reinstall so instructional labelsare rightside up.NOTE: On high airflow models (75,000 and 100,000 Btuh), thefront and rear blower doors must be interchanged so that theinstructional labels are rightside up on both sides of furnace. Moveblower door knob to new front blower door.WIRE ALTERNATE LIMIT SWITCH1. Disconnect wires from limit switch located on front centerpanel and reconnect wires to alternate limit switch on rightfront panel. (See right-hand view of Fig. 5.)2. Replace control box cover.Limit switch wires MUST be moved to the alternate limitswitch when reversing the furnace to ensure safe operation.Failure to follow this warning may result in a hazardousoperating condition.ELECTRICAL CONNECTIONSSee Fig. 10 for a wiring diagram showing the proper field 115- and24-v wiring connections. Check all electrical connections (bothfactory and field) for tightness. In all instances, wiring to be doneand any replacement wire shall conform with the temperaturelimitation for Type T wire (63°F/35°C rise).Step 1—115-v WiringBefore proceeding with electrical connections, make certain thatvoltage, frequency, and phase correspond to that specified on unitrating plate. Also, check to be sure that service provided by utilityis sufficient to handle load imposed by this equipment. Refer torating plate or to Table 4 for equipment electrical specifications.Do not connect aluminum wire between the disconnect switchand the furnace. Use only copper wire.Make all electrical connections in accordance with the NationalElectric Code ANSI/NFPA 70-1996 and any local codes orordinances that might apply.For Canadian installations, all electrical connections must be madein accordance with CSA C22.1 Canadian Electrical Code, orauthorities having jurisdiction.When replacing any original wiring, use only 105°C, AWG No. 16copper wire.Use a separate, fused branch electrical circuit containing a properlysized fuse or HACR-type circuit breaker for this furnace. SeeTable 4 for wire size and fuse specifications. A disconnectingmeans must be located within sight of and readily accessible to thefurnace.Table 4—Electrical DataUNIT SIZEVOLTS—HERTZ—PHASEOPERATINGVOLTAGE RANGE MAXUNITAMPSMINWIRESIZEMAX WIRELENGTH†(FT)MAX FUSE‡ ORHACR-TYPECIRCUIT BREAKERAMPSMax* Min*050-12 115—60—1 127 104 9.3 14 30 15075-12 115—60—1 127 104 9.9 14 28 15075-16 115—60—1 127 104 11.7 12 38 20100-16 115—60—1 127 104 9.9 14 28 15100-20 115—60—1 127 104 13.1 12 34 20125-20 115—60—1 127 104 11.7 12 38 20* Permissible limits of the voltage range at which the unit will operate satisfactorily.† Length shown is as measured 1 way along wire path between unit and service panel for maximum 2 percent voltage drop.‡ Time-delay fuse is recommended.Fig. 8—Reattaching Rollout Switch BracketA96074Fig. 9—Reversing Burner Opening Inlet PlateA960759