Carrier 50ZH Series Installation, Start-up And Service Instructions Manual

Also see for 50ZH030: Installation, Start-Up and Service Instructions Product data Installation instructions Product data

50ZH030-0603-Phase Packaged Heat PumpVisit "vv'vv'vv.12_lrri_r. L"oininstallation, Start-Up and Service instructionsHEATING & COOLINGNOTE: Read the entire instruction manual belk_re starting theinstallation.TABLE OF CONTENTSSAFETY CONS1 f)ERATIONS ..................................................... ]INTRODUCTION .......................................................................... 2RECEIVING AND INSTALLATION .......................................... 2Check Equipn_ent ...................................................................... 2IDENTIFY UNIT ................................................................ 2INSPECT SHIPMENT ........................................................ 2Provide Unit Support ................................................................ 2SLAB MOUNT ................................................................... 2GROUND MOUNT ............................................................ 2Provide Clearances .................................................................... 2Place Unit .................................................................................. 2Select and Install Ductwork ..................................................... 2INSTALL FLANGES FOR DUCTWORK CONNEC-TIONS (50ZH060 ONLY) .................................................. 2CONVERTING HORIZONTAL DISCHARGE UNITS TODOWNFLOW (VERTICAL) DISCHARGE ...................... 6Provide liar Condensate Disposal ............................................. 6Install Electrical Connections ................................................... 7HIGH-VOLTAGE CONNECTIONS .................................. 7ROUTING POWER LEADS INTO UNIT ........................ 7CONNECTING GROUND LEAD TO UNIT GROUND.7ROUTING CONTROL POWER WIRES .......................... 7ACCESSORY ELECTRIC HEAT WIRING ..................... 7SPECIAL PROCEDURES FOR 208-V OPERATION .....7PRE-START-UP ............................................................................ 9START-UP ..................................................................................... 9Check lor Refi"igerant Leaks .................................................... 9LOCATE AND REPAIR REFRIGERANT LEAKS ANDCHARGE THE UNIT AS FOLLOWS: ............................. 9Start-Up Cooling Section and Make Adjustnlents ................ 10CHECKING COOLING CONTROL OPERATION ....... 10COMPRESSOR ROTATION ........................................... 10Refrigerant Charge .................................................................. 10NO CHARGE .................................................................... 10LOW CHARGE COOLING ............................................. 10TO USE THE COOLING CHARGING CHART ............ 11HEATING MODE CHARGE ........................................... 11Indoor Airflow and Airflow Adjustn-ients .............................. IXFOR 208/230-V ................................................................. 11FOR 460-V MOTORS ...................................................... 11Unit Controls ........................................................................... l lHIGH-PRESSURE RELIEF VALVE ............................... IXLOSS OF CHARGE SWITCH ......................................... 11COMPRESSOR OVERLOAD .......................................... 11Sequence of Operation ............................................................ 14FAN OPERATION ............................................................ 14COOLING .......................................................................... 14HEAT PUMP HEATING .................................................. 14DEFROST .......................................................................... 14ELECTRIC RESISTANCE HEATING ............................ 14C00155Fig. 1--Unit 50ZHMAINTENANCE ......................................................................... 14Air Filter .................................................................................. 16Unit Top Removal (Outdoor-Coil Side) ................................ 16Indoor Blower and Motor ....................................................... 16Outdoor Coil, Indoor Coil and Condensate Drain Pan ........ 17Outdoor Fan ............................................................................ 19Electrical Controls and Wiring ............................................... 19ReliTigerant Circuit .................................................................. 19Indoor Airflow ........................................................................ 19Metering Devices .................................................................... 19Lubrication .............................................................................. 19Liquid Line Strainer ................................................................ 19High Flow Valves ................................................................... 19TROUBLESHOOTING ............................................................... 22START-UP CHECKLIST ............................................................ 23NOTE TO 1NSTALLER--Beli_re installation, READ THESEINSTRUCTIONS CAREFULLY AND COMPLETELY. Also,make sure the User's Manual and Replacement Guide are leli withthe unit alier installation.SAFETY CONSIDERATIONSInstallation and servicing of air-conditioning equipment can behazardous due to system pressure and electrical components. Onlytrained and qualified workers should install, repair, or serviceair-conditioning equipment.Untrained workers can perlimn basic maintenance hlnctions ofcleaning coils and l]lters. All other operations should be perlormedby trained service people. When working on air-conditioningequipment, pay attention to precautions in the literature, tags, andlabels attached to the unit, and other sali_ty precautions that mayapply.Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.PC 101 Printed in U.S.A. Catalog No. 50ZH-6SI Pg 1 2-06 Replaces: New