Carrier WeatherExpert 50LC 07 Series Installation Instructions Manual

Also see for 50LC 07: Controls, Start-Up, Operation and Troubleshooting Service and maintenance instructions Service and maintenance instructions

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Catalog No. 04-53500219-01 Printed in U.S.A. Form 50LC-7-05SI Pg 1 2-19 Replaces: 50LC-7-04SIInstallation InstructionsNOTE: Read the entire instruction manual before starting theinstallation.SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . 1GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Rated Indoor Airflow (cfm) . . . . . . . . . . . . . . . . . . . . . 2INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Jobsite Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Step 1 — Plan for Unit Location . . . . . . . . . . . . . . . . . 6• ROOF MOUNTStep 2 — Plan for Sequence of Unit Installation . . . . 7• CURB-MOUNTED INSTALLATION• PAD-MOUNTED INSTALLATION• FRAME-MOUNTED INSTALLATIONStep 3 — Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . . . 7Step 4 — Provide Unit Support. . . . . . . . . . . . . . . . . . 7• ROOF CURB MOUNT• SLAB MOUNT (HORIZONTAL UNITS ONLY)• ALTERNATE UNIT SUPPORT (IN LIEU OF CURB ORSLAB MOUNT)Step 5 — Field Fabricate Ductwork . . . . . . . . . . . . . . 9• FOR UNITS WITH ACCESSORY OR OPTIONALELECTRIC HEATERSStep 6 — Rig and Place Unit . . . . . . . . . . . . . . . . . . . . 9• POSITIONING ON CURBStep 7 — Convert to Horizontal and ConnectDuctwork (when required). . . . . . . . . . . . . . . . . . . 10Step 8 — Install Outside Air Hood . . . . . . . . . . . . . . 11• ECONOMIZER HOOD PACKAGE REMOVAL ANDSETUP - FACTORY OPTION• ECONOMIZER HOODStep 9 — Install External Condensate Trap andLine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Step 10 — Make Electrical Connections . . . . . . . . . 12• FIELD POWER SUPPLY• UNITS WITH FACTORY-INSTALLED NON-FUSEDDISCONNECT OR HACR• UNITS WITHOUT FACTORY-INSTALLED NON-FUSED DISCONNECT OR HACR• ALL UNITS• CONVENIENCE OUTLETS• HACR• FACTORY-OPTION THRU-BASE CONNECTIONS• UNITS WITHOUT THRU-BASE CONNECTIONS• FIELD CONTROL WIRING• THERMOSTAT• UNIT WITHOUT THRU-BASE CONNECTION KIT• HEAT ANTICIPATOR SETTINGSElectric Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23• SINGLE POINT BOXES AND SUPPLEMENTARYFUSES• SINGLE POINT BOXES WITHOUT FUSES• LOW-VOLTAGE CONTROL CONNECTIONSHumidi-MiZer® System Control Connections . . . . . 24• HUMIDI-MIZER SYSTEM – SPACE RH CONTROLLERRTU Open Controller (Factory-Installed Option). . . 25SystemVu™ Controller (Factory-Installed Option) . 25Integrated Staging Control (ISC) Board . . . . . . . . . . 26• ISC BOARD - SEQUENCE OF OPERATIONEconoMi$er® X (Factory Option) . . . . . . . . . . . . . . .28• SYSTEM COMPONENTS• SPECIFICATIONS• INPUTS• OUTPUTS• ENVIRONMENTAL• ECONOMIZER MODULE WIRING DETAILS• INTERFACE OVERVIEW• SETUP AND CONFIGURATION• ENTHALPY SETTINGS• TWO-SPEED FAN OPERATION• CHECKOUT• TROUBLESHOOTINGStaged Air Volume (SAV™) with Variable FrequencyDrive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42Multi-Speed VFD Display Kit (Field-InstalledAccessory) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42• ALPHA NUMERIC DISPLAY• MENU KEY• NAVIGATION KEYS AND STATUS LEDS• OPERATION KEYS AND LEDS• CONNECTING THE KEYPAD TO THE VFD• PROGRAM THE VFD FOR 3 DISCRETE INDOOR FANSPEEDSSmoke Detectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . .50• COMPLETING INSTALLATION OF RETURN AIRSMOKE SENSOR• ADDITIONAL APPLICATION DATAStep 11 — Adjust Factory-Installed Options . . . . . .51• SMOKE DETECTORSStep 12 — Install Accessories . . . . . . . . . . . . . . . . . .51Pre-Start and Start-Up . . . . . . . . . . . . . . . . . . . . . . . .51Step 13 — Check Belt Tension . . . . . . . . . . . . . . . . .51• BELT FORCE — DEFLECTION METHOD• BELT TENSION METHODSTART-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . .CL-1SAFETY CONSIDERATIONSImproper installation, adjustment, alteration, service,maintenance, or use can cause explosion, fire, electrical shockor other conditions which may cause personal injury orproperty damage. Consult a qualified installer, service agency,or your distributor or branch for information or assistance. Thequalified installer or agency must use factory-authorized kits oraccessories when modifying this product. Refer to theindividual instructions packaged with the kits or accessorieswhen installing.Follow all safety codes. Wear safety glasses and work gloves.Use quenching cloths for brazing operations and have a fireextinguisher available. Read these instructions thoroughly andfollow all warnings or cautions attached to the unit. Consultlocal building codes and appropriate national electrical codes(in USA, ANSI/NFPA70, National Electrical Code (NEC); inCanada, CSA C22.1) for special requirements.It is important to recognize safety information. This is thesafety-alert symbol . When you see this symbol on the unitWeatherExpert®50LC 07Single Package Rooftop Cooling Onlywith Puron ® (R-410A) Refrigerant