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

Also see for 58RAV Series: Manual Service and maintenance instructions Maintenance and service instructions Operation guide Installation, start-up, and operating instructions

Contents

0.5 psig (14-in. wc), close the manual shut-off valve located on thegas valve before the test. It is recommended that the ground jointunion be loosened before pressure testing.After all connections have been made, purge the lines and checkfor gas leakage with regulated gas supply pressure.Step 8—Electrical Connections115-V WIRINGRefer to the unit rating plate or Table 6 for equipment electricalrequirements. The control system requires an earth ground forproper operation.Do not connect aluminum wire between disconnect switchand furnace. Use only copper wire.Make all electrical connections in accordance with the currentedition of the National Electrical Code (NEC) ANSI/NFPA70-1993, and any local codes or ordinances that might apply. ForCanadian installations, all electrical connections must be made inaccordance with Canadian Electrical Code CSA C22.1, or authori-ties having jurisdiction.NOTE: Proper polarity must be maintained for 115-v wiring. Ifpolarity is incorrect, control center fault code indicator light willflash rapidly and furnace will not operate.The cabinet MUST have an uninterrupted or unbroken groundaccording to NEC ANSI/NFPA 70-1990 and Canadian Elec-trical Code CSA C22.1 or local codes to minimize personalinjury if an electrical fault should occur. This may consist ofelectrical wire or conduit approved for electrical ground wheninstalled in accordance with existing electrical codes. Do notuse gas piping as an electrical ground. Failure to follow thiswarning could result in electrical shock, fire, or death.24-V WIRING — Make field 24-v connections at the 24-v termi-nal strip. (See Fig. 11.) Connect terminal Y as shown in Fig. 12 forproper operation in cooling mode. Use AWG No. 18 color-codedwire only.The 24-v circuit contains an automotive-type, 3-amp fuse locatedon the main control board. Any direct shorts during installation,service, or maintenance could cause this fuse to blow. If fusereplacement is required, use ONLY a 3-amp fuse of identical size.ACCESSORIES1. Electronic air cleaner (EAC)Two quick-connect terminals, marked EAC-1 and EAC-2, areprovided for EAC connection. (See Fig. 11.) These terminalsare energized with 115v (1.5-amp maximum) during blowermotor operation.2. Humidifier (HUM)Quick-connect terminal (HUM) and screw terminal (Com) areprovided for 24-v humidifier connection. The terminals areenergized with 24v (0.5-amp maximum) after inducer motorprepurge period.NOTE: A field-supplied, 115-v controlled relay connected toEAC terminals may be added if humidifier operation is desiredduring blower operation.Step 9—VentingRefer to the enclosed Installation Instructions, GAMA VentingTables for Category I Furnaces and Venting Tables for Category IFan-Assisted Furnaces. The horizontal portion of the ventingsystem shall maintain a minimum of 1/4-in. upward slope perlinear ft and it shall be rigidly supported every 5 ft or less withhangers or straps to ensure that there will be no movement afterinstallation.Fig. 10—Typical Gas Pipe ArrangementA89414GASSUPPLYMANUALSHUTOFFVALVESEDIMENTTRAPUNIONTable 6—Electrical DataUNIT SIZEVOLTS—HERTZ—PHASEOPERATING VOLTAGE RANGE MAXIMUMUNIT AMPSMINIMUMWIRE GAGEMAXIMUM WIRELENGTH FT‡MAXIMUMFUSE OR HACR-TYPE CKT BKRAMPS†Maximum* Minimum*050-08 115—60—1 127 104 6.6 14 42 15050-12 115—60—1 127 104 8.1 14 34 15070-08 115—60—1 127 104 6.7 14 42 15070-12 115—60—1 127 104 8.4 14 33 15096-12 115—60—1 127 104 9.2 14 30 15096-16 115—60—1 127 104 10.2 14 28 15115-16 115—60—1 127 104 10.1 14 28 15115-20 115—60—1 127 104 13.3 12 33 20135-20 115—60—1 127 104 14.3 12 31 20* Permissible limits of the voltage range at which the unit will operate satisfactorily.† Time-delay fuse is recommended.‡ Length shown is as measured 1 way along wire path between unit and service panel for maximum 2 percent voltage drop.8