Carrier WeatherMaker 48FC Series Installation Instructions Manual

Also see for 48FC Series: Controls, Start-Up, Operation and Troubleshooting Installation instructions

Carrier WeatherMaker 48FC Series Installation Instructions Manual Manual pdf 1 page image

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Catalog No. 04-53480421-01 Printed in U.S.A. Form No. 48FC-8-14-02SI Rev. A Pg 1 3-24 Replaces: 48FC-8-14-01SIInstallation InstructionsCONTENTSPageSAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Rated Indoor Airflow (cfm) . . . . . . . . . . . . . . . . . . . . . 3Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Step 1 — Plan for Unit Location . . . . . . . . . . . . . . . 11• ROOF MOUNTStep 2 — Plan for Sequence of Unit Installation . . 11• CURB-MOUNTED INSTALLATION• PAD-MOUNTED INSTALLATION• FRAME-MOUNTED INSTALLATIONStep 3 — Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . . 11Step 4 — Provide Unit Support . . . . . . . . . . . . . . . . 11• ROOF CURB MOUNT• SLAB MOUNT (HORIZONTAL UNITS ONLY)• ALTERNATE UNIT SUPPORT (IN LIEU OF CURB ORSLAB MOUNT)Step 5 — Field Fabricate Ductwork . . . . . . . . . . . . . 13Step 6 — Rig and Place Unit . . . . . . . . . . . . . . . . . . 13• POSITIONING ON CURBStep 7 — Convert to Horizontal and ConnectDuctwork (When Required) . . . . . . . . . . . . . . . . . 14Step 8 — Install Outside Air Hood . . . . . . . . . . . . . . 15• ECONOMIZER HOOD PACKAGE REMOVAL (FACTORY OPTION)• ECONOMIZER HOOD SETUPStep 9 — Install Flue Hood . . . . . . . . . . . . . . . . . . . . 16Step 10 — Install Gas Piping . . . . . . . . . . . . . . . . . . 16• FACTORY-OPTION THRU-BASE GAS CONNECTIONSStep 11 — Install External CondensateTrap and Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Step 12 — Make Electrical Connections . . . . . . . . . 20• FIELD POWER SUPPLY• FIELD POWER WIRING CONNECTION• UNITS WITH FACTORY-INSTALLED NON-FUSED DISCONNECT• UNITS WITHOUT FACTORY-INSTALLED NON-FUSED DISCONNECT• FIELD WIRING COMPLIANCE• CONVENIENCE OUTLETS• ALL UNITS• FACTORY-OPTION THRU-BASE CONNECTIONS(ELECTRICAL CONNECTIONS)• HUMIDI-MIZER® CONTROL CONNECTIONS• TYPICAL UNIT WIRING DIAGRAMSIntegrated Gas Controller . . . . . . . . . . . . . . . . . . . . . 31Humidi-MiZer Dehumidification System (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33• NORMAL COOLING• DEHUM/MECH COOLING (SUBCOOLING) MODE• DEHUMIDIFICATION (HOT GAS REHEAT) MODE• REHEAT CONTROLEconomizerONE (Factory Option) . . . . . . . . . . . . . .35• ECONOMIZER SETTINGS• WIRING• SETUP AND CONFIGURATION• INSTALLING OPTIONAL HH57LW001 SINGLE OUTSIDE AIR ENTHALPY SENSOR• CHECKOUT• TROUBLESHOOTINGSystemVu™ Controller (Factory Option) . . . . . . . . .56• SMOKE DETECTORS• COMPLETING INSTALLATION OF RETURN-AIRSMOKE SENSOR• ADDITIONAL APPLICATION DATAStep 13 — Adjust Factory-Installed Options . . . . . .57• SMOKE DETECTORS• ECONOMIZERONE OCCUPANCY SWITCHStep 14 — Install Accessories . . . . . . . . . . . . . . . . .57Step 15 — Fan Speed Set Up . . . . . . . . . . . . . . . . . .57• UNITS WITH ELECTRO-MECHANICAL CONTROLS• UNITS WITH SYSTEMVU™ CONTROLSSTART-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . .CL-1SAFETY CONSIDERATIONSInstallation and servicing of air-conditioning equipment can behazardous due to system pressure and electrical components. Onlytrained and qualified service personnel should install, repair, orservice air-conditioning equipment.Untrained personnel can perform basic maintenance functions ofcleaning coils and filters and replacing filters. All other operationsshould be performed by trained service personnel. When workingon air-conditioning equipment, observe precautions in theliterature, tags and labels attached to the unit, and other safetyprecautions that may apply.Follow all safety codes, including ANSI (American NationalStandards Institute) Z223.1. Wear safety glasses and work gloves.Use quenching cloth for unbrazing operations. Have fireextinguisher available for all brazing operations.It is important to recognize safety information. This is the safety-alert symbol . When you see this symbol on the unit and ininstructions or manuals, be alert to the potential for personalinjury.Understand the signal words DANGER, WARNING, CAUTION,and NOTE. These words are used with the safety-alert symbol.DANGER identifies the most serious hazards which will result insevere personal injury or death. WARNING signifies hazardswhich could result in personal injury or death. CAUTION is usedto identify unsafe practices, which may result in minor personalinjury or product and property damage. NOTE is used to highlightsuggestions which will result in enhanced installation, reliability,or operation.WeatherMaker ®48FC 08-14Single Package Rooftop withGas Heat/Electric Cooling