York 19 SEER Installation Manual

Contents

Johnson Controls Unitary Products 5390862-UIM-A-0318R-410A 2-STAGE OUTDOORSPLIT-SYSTEM AIR CONDITIONINGMODELS: 19 SEERYXT, AC19B, AL19B SERIES2 – 5 TONS – 1 PHASEINSTALLATION MANUAL®LIST OF SECTIONSGENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1UNIT INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3COIL METERING DEVICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7EVACUATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8SYSTEM CHARGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8ELECTRICAL CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11INSTRUCTING THE OWNER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24START UP SHEET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25LIST OF FIGURESTypical Installation Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Alternative Installation Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Insulation of Vapor Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5Underground Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5Heat Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5TXV Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6TXV Bulb and Equalizer line Installations . . . . . . . . . . . . . . . . . . . . . .7Proper Bulb Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Vertical Temperature Bulb Orientation . . . . . . . . . . . . . . . . . . . . . . . . .7System Charging Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9Outdoor Unit Control Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10Typical 2-Stage Conventional Field Wiring - AC . . . . . . . . . . . . . . . .11Demand Response Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Communicating AC with Communicating Air Handler or Furnace . . 12Communicating AC with Non-Communicating Air Handleror Furnace using Communicating Interface Control . . . . . . . . . . . . . 12Thermostat Chart - Two Stage AC –Two Stage Variable Speed Furnaces . . . . . . . . . . . . . . . . . . . . . . . . 13Thermostat Chart - Two Stage AC –Two Stage Variable Speed Furnaces . . . . . . . . . . . . . . . . . . . . . . . . 14Thermostat Chart - Two Stage AC – Variable Speed Furnaces . . . . 15Thermostat Chart - Two Stage AC – Variable Speed Furnaces . . . . 16Thermostat Chart - Two Stage AC – Variable Speed Furnaces . . . . 17Thermostat Chart - Two Stage AC – Variable Speed Furnaces . . . . 18Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22LIST OF TABLESMinimum / Maximum Operating Limit Conditions . . . . . . . . . . . . . . . . .3Allowable Vertical Linesets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3R-410A Saturation Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10R-410A Saturation Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Status code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Fault Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22SECTION I: GENERALThe outdoor units are designed to be connected to a matching indoorcoil with sweat connect lines. Sweat connect units are factory chargedwith refrigerant for a nominal sized matching indoor coil plus 15 feet offield-supplied lines.SECTION II: SAFETYThis is a safety alert symbol. When you see this symbol onlabels or in manuals, be alert to the potential for personalinjury.Understand and pay particular attention to the signal words DANGER,WARNING, or CAUTION.DANGER indicates an imminently hazardous situation, which, if notavoided, will result in death or serious injury.WARNING indicates a potentially hazardous situation, which, if notavoided, could result in death or serious injury.CAUTION indicates a potentially hazardous situation, which, if notavoided may result in minor or moderate injury. It is also used toalert against unsafe practices and hazards involving only property dam-age.IMPORTANTIt is recommended before starting the system to connect thethermostat to Wi-Fi using a local network or portable hot-spotso the thermostat and system receive the latest softwareupdates to optimize system performance only if using this incommunicating configuration. This notice does not apply toconventionally wired equipment.WARNINGImproper installation may create a condition where the operation ofthe product could cause personal injury or property damage.Improper installation, adjustment, alteration, service or maintenancecan cause injury or property damage. Refer to this manual for assis-tance or for additional information, consult a qualified contractor,installer or service agency.CAUTIONThis product must be installed in strict compliance with the enclosedinstallation instructions and any applicable local, state, and nationalcodes including, but not limited to building, electrical, and mechanicalcodes.CAUTIONR-410A systems operate at higher pressures than R-22 systems. Donot use R-22 service equipment or components on R-410A equip-ment. Service equipment Must Be Rated for R-410A.!!!