Carrier PHD4 Series Installation Instruction

Also see for PHD4 Series: Installation instructions

Installation InstructionIMPORTANT: Effective January 1, 2023, all split system and packagedair conditioners must be installed pursuant to applicable regionalefficiency standards issued by the Department of Energy.NOTE: Read the entire instruction manual before starting theinstallation.NOTE: Installer: Make sure the Owner’s Manual and ServiceInstructions are left with the unit after installation.Table of ContentsSafety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Receiving and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Identify Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Inspect Shipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Roof Curb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Slab Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Rigging/Lifting of Unit (See Fig. 7) . . . . . . . . . . . . . . . . . . . . . 10Configuring Units for Downflow (Vertical) Discharge . . . . . . 10High-Voltage Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Special Procedures for 208-V Operation . . . . . . . . . . . . . . . . . 12Control Voltage Connections . . . . . . . . . . . . . . . . . . . . . . . . . . 12Standard Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Transformer Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Accessory Electric Heaters Installation . . . . . . . . . . . . . . . . . . 12Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Pre-Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Start-Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Checking Cooling and Heating Control Operation. . . . . . . . . . 21Checking and Adjusting Refrigerant Charge . . . . . . . . . . . . . . 22Indoor Airflow and Airflow Adjustments . . . . . . . . . . . . . . . . 22Single Cooling Fan Speed Set-up (Dehumidification feature notused) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Two Cooling Fan Speeds Set-up (Dehumidification feature used)22Single Speed Cooling With Higher Electric Heat Speed . . . . . 23Continuous Fan Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Demand Defrost Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Indoor Blower and Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Compressor Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Servicing Systems on Roofs with Synthetic Materials . . . . . . . 31Liquid Line Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31R-410A Refrigerant Charging . . . . . . . . . . . . . . . . . . . . . . . . . 31Loss of Charge Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Check Defrost Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Start-Up Checklist. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32A170030A09183Fig. 1 – Unit WPH4, PHD4Safety ConsiderationsInstallation and servicing of this equipment can be hazardous due tomechanical and electrical components. Only trained and qualifiedpersonnel should install, repair, or service this equipment.Untrained personnel can perform basic maintenance functions such ascleaning and replacing air filters. All other operations must be performedby trained service personnel. When working on this equipment, observeprecautions in the literature, on tags, and on labels attached to or shippedwith the unit and other safety precautions that may apply.Follow all safety codes. Wear safety glasses, protective clothing, andwork gloves. Use quenching cloth for brazing operations. Have a fireextinguisher available. Read these instructions thoroughly and follow allwarnings or cautions included in literature and attached to the unit.Consult local building codes, the current editions of the NationalElectrical Code (NEC) NFPA 70.PHD4 Series K and WPH4 Series K13.4 SEER2 Single-Packaged Heat Pump Systemwith R-410A RefrigerantSingle Phase 2-5 Nominal Tons (Sizes 24-60)Three Phase 3-5 Nominal Tons (Sizes 36-60)