Carrier 50HCQA04-06 Installation Instructions Manual

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Catalog No. 04-53500210-01 Printed in U.S.A. Form 50HCQ-4-6-01SI Pg 1 12-18 Replaces: 50HCQ-01SIInstallation InstructionsSAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . 1MODEL NUMBER NOMENCLATUREAND DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 2Rated Indoor Airflow . . . . . . . . . . . . . . . . . . . . . . . . 2INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Job Site Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Step 1 — Plan for Unit Location . . . . . . . . . . . . . . . 6• ROOF MOUNTStep 2 — Plan for Sequence of UnitInstallation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6• 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 CURBOR SLAB MOUNT)Step 5 — Field Fabricate Ductwork . . . . . . . . . . . . 9• UNITS WITH ACCESSORY ELECTRIC HEATERSStep 6 — Rig and Place Unit . . . . . . . . . . . . . . . . . . 9Step 7 — Convert to Horizontal andConnect Ductwork (when required) . . . . . . . . . . . 10Step 8 — Install Outside Air Hood . . . . . . . . . . . . 11• ECONOMIZER HOOD REMOVAL AND SETUP• TWO-POSITION DAMPER HOOD REMOVAL ANDSETUP• ECONOMIZER AND TWO-POSITION HOODASSEMBLYStep 9 — Units with Hinged Panels Only . . . . . . . 12Step 10 — Install External Condensate Trapand Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Step 11 — Make Electrical Connections . . . . . . . 13• FIELD POWER SUPPLY• UNITS WITHOUT FACTORY-INSTALLEDDISCONNECT• UNITS WITH FACTORY-INSTALLED DISCONNECT• ALL UNITS• CONVENIENCE OUTLETS• FACTORY-OPTION THRU-BASE CONNECTIONS(ELECTRICAL CONNECTIONS)• UNITS WITHOUT THRU-BASE CONNECTIONS(ELECTRICAL CONNECTIONS)• FIELD CONTROL WIRING• THERMOSTAT• HEAT ANTICIPATOR SETTINGS• COMMERCIAL DEFROST CONTROL• ELECTRIC HEATERS• CONTROL AND POWER WIRING DIAGRAMS• ECONOMI$ER (FACTORY OPTION)• SMOKE DETECTORS• RTU OPEN CONTROLLER (FACTORY OPTION)• CONTROLLER OPTIONSStep 12 — Adjust Factory-Installed Options . . . 43• SMOKE DETECTORS• ECONOMI$ER IV OCCUPANCY SWITCHStep 13 — Install Accessories . . . . . . . . . . . . . . . 43Step 14 — Check Belt Tension . . . . . . . . . . . . . . 45• BELT FORCE — DEFLECTION METHOD• BELT TENSION METHODPre-Start and Start-Up . . . . . . . . . . . . . . . . . . . . . 45Typical Unit Piping . . . . . . . . . . . . . . . . . . . . . . . . 45START-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 unitand in instructions or manuals, be alert to the potential forpersonal injury.Understand the signal words DANGER, WARNING,CAUTION, and NOTE. These words are used with the safety-alert symbol. DANGER identifies the most serious hazardswhich will result in severe personal injury or death.WARNING signifies hazards which could result in personalinjury or death. CAUTION is used to identify unsafe practices,which may result in minor personal injury or product andproperty damage. NOTE is used to highlight suggestions50HCQA04-06Single Package Rooftop Heat Pumpwith Puron® (R-410A) Refrigerant