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INSTALLATION MANUAL
R-410A VARIABLE CAPACITY
OUTDOOR SPLIT-SYSTEM
AIR CONDITIONING
MODELS: 20 SEER
YXV, AC21, AL21 SERIES
2 - 5 TONS - 1 PHASE
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
UNIT INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
EVACUATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
ELECTRICAL CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
SYSTEM CHARGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Typical Installation Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Alternative Installation Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Installation of Vapor Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Underground Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Heat Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Outdoor Unit Control Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Typical Communicating Field Wiring (Air Handler / Furnace) . . . . . . .7
Demand Response Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Minimum / Maximum Operating Limit Conditions . . . . . . . . . . . . . . . . .2
Allowable Vertical Linesets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
TEST Mode Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Same Priority Fault Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Status Code Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Outdoor Display Menu Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
CAUTION
!
The EEV is factory installed but shipped in the closed position.
Prior to any brazing, power must be applied to the Indoor Unit. If
installing a coil furnace match or multi-piece air handler system,
the EEV harness must be plugged into the Comm port prior to
applying power to the indoor unit. Allow
open to allow proper nitrogen flow through the coil and lineset.
SECTION I: GENERAL
The outdoor units are designed to be connected to a matching indoor
coil with sweat connect lines. Sweat connect units are factory charged
with refrigerant for a nominal sized matching indoor coil plus 15 feet of
field-supplied lines.
SECTION II: SAFETY
This is a safety alert symbol. When you see this symbol on
labels or in manuals, be alert to the potential for personal
injury.
Understand and pay particular attention to the signal words DANGER,
WARNING, or CAUTION.
DANGER indicates an imminently hazardous situation, which, if not
avoided, will result in death or serious injury.
Johnson Controls Unitary Products
LIST OF SECTIONS
LIST OF FIGURES
LIST OF TABLES
1 minute
for the EEV to
SYSTEM OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
OUTDOOR SCREEN OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . 11
INSTRUCTING THE OWNER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
START UP SHEET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
System Charging Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Main Outdoor Control and Display . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Outdoor Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2 Ton Inverter Drive LED Location . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3 & 4 Ton Inverter Drive LED Location . . . . . . . . . . . . . . . . . . . . . . . 16
5 Ton Inverter Drive LED Location . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Wiring Diagram - 2 Ton . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Wiring Diagram - 3-5 Ton . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Outdoor Control Faults/Status Code Display . . . . . . . . . . . . . . . . . . 13
Inverter Drive Fault/Status Code Display . . . . . . . . . . . . . . . . . . . . . 15
Troubleshooting - Fault and Protection Table . . . . . . . . . . . . . . . . . 18
Sensor Connector Pin Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Low Suction Pressure Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
WARNING indicates a potentially hazardous situation, which, if not
avoided, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation, which, if not
avoided may result in minor or moderate injury. It is also used to
alert against unsafe practices and hazards involving only property dam-
age.
WARNING
!
Improper installation may create a condition where the operation of
the product could cause personal injury or property damage.
Improper installation, adjustment, alteration, service or mainte-
nance can cause injury or property damage. Refer to this manual
for assistance or for additional information, consult a qualified con-
tractor, installer or service agency.
CAUTION
!
This product must be installed in strict compliance with the
enclosed installation instructions and any applicable local, state,
and national codes including, but not limited to building, electrical,
and mechanical codes.
® ®
5284792-UIM-A-0317
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Table of Contents
Related Manuals for York YXV series
Summary of Contents for York YXV series
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Page 1: Table Of Contents
INSTALLATION MANUAL R-410A VARIABLE CAPACITY OUTDOOR SPLIT-SYSTEM ® ® AIR CONDITIONING MODELS: 20 SEER YXV, AC21, AL21 SERIES 2 – 5 TONS – 1 PHASE LIST OF SECTIONS GENERAL ..........1 SYSTEM OPERATION . -
Page 2: Unit Installation
5284792-UIM-A-0317 Unit Reduced Capacity Conditions CAUTION NOTICE R-410A systems operate at higher pressures than R-22 systems. Inverter Temperature Protection: Do not use R-22 service equipment or components on R-410A Must Be Rated If excessive inverter temperatures are sensed, the compressor speed equipment. -
Page 3: Typical Installation Clearances
5284792-UIM-A-0317 FIGURE 1: Typical Installation Clearances FIGURE 2: Alternative Installation Clearances Johnson Controls Unitary Products... -
Page 4: Unit Placement
5284792-UIM-A-0317 ADD-ON REPLACEMENT/RETROFIT On occasion, site conditions may require direct wall mounted brackets to be used to locate and support the outdoor unit. In these applications, When this unit is being used as a replacement for an existing R-410A care must be taken to address unit base pan support, structural integ- unit, these are matched systems and the indoor coil and outdoor unit rity, safe access and serviceability, as well as the possible sound and must be replaced. -
Page 5: Installation Of Vapor Line
5284792-UIM-A-0317 PRECAUTIONS DURING LINE INSTALLATION CAUTION Install the refrigerant lines with as few bends as possible. Care must be taken not to damage the couplings or kink the tubing. Use clean hard Dry nitrogen should always be supplied through the tubing while it is drawn copper tubing where no appreciable amount of bending around being brazed, because the temperature required is high enough to obstruction is necessary. -
Page 6: Evacuation
5284792-UIM-A-0317 13. Replace service valve cap finger tight, then tighten an additional 1/2 CAUTION turn (1/2 hex flat). Cap must be replaced to prevent leaks. WARNING Do not install any coil with a furnace which is to be operated during the heating season without attaching the refrigerant lines to the coil. -
Page 7: Outdoor Unit Control Box
5284792-UIM-A-0317 FIELD CONNECTIONS CONTROL WIRING 1. Route low voltage wiring into bottom of control box. Connect low DO NOT connect the “R” terminal of unit control board. voltage wiring inside the low voltage box. See Figure 6. 2. The complete connection diagram and schematic wiring label is MAIN located on the inside surface of the unit service access panel. -
Page 8: System Charge
5284792-UIM-A-0317 Demand Response Proper indoor unit airflow is determined by the system and requires no initial set-up by the installing contractor unless using an AVV or MVC The main outdoor control has a conventional 24VAC input (DR) for util- modular blower air handler with electric heat. If a unit is using electric ity demand response signals. -
Page 9: System Operation
5284792-UIM-A-0317 TOTAL SYSTEM CHARGE DETERMINED CHARGE VERIFICATION MODE 1. Determine outdoor unit factory charge from Tabular Data Sheet. The outdoor display will assist the installer with charging the system. Through interaction with the Outdoor Display the system will operate at 2. -
Page 10: Test Mode Option
5284792-UIM-A-0317 TABLE 3: TEST Mode Option TEST MODE OPTION Menu Options Operation OPERATIONAL MODE (AC - HP) Display current system configuration (AC or HP) and size stored in memory. Bypass ASCD timer and initiate system operation if a call for space conditioning is present from the HX BYPASS ASCD TIMER thermostat. -
Page 11: Outdoor Screen Operation
5284792-UIM-A-0317 SECTION VIII: OUTDOOR SCREEN OPERATION FIGURE 11: Outdoor Display The system is provided with an advanced screen to assist in unit com- 3. If any of the following conditions exists, do not display current values defined in 1-3 in the banner. missioning and troubleshooting. -
Page 12: Outdoor Display Menu Structure
5284792-UIM-A-0317 TABLE 6: Outdoor Display Menu Structure MAIN LAYER SECOND LAYER THIRD LAYER BASE LAYER COMPRESSOR (RPM) OD FAN (RPM) COMMANDED ID EEV (SP) ID FAN (CFM) COMPRESSOR (RPM) EQUIPMENT STATUS OD FAN (RPM) ID EEV (SP) CURRENT ID FAN (CFM) INPUT CURRENT (AMPS) INPUT VOLTAGE (VOLTS) INPUT WATTS (WATTS) -
Page 13: Outdoor Control Faults/Status Code Display
5284792-UIM-A-0317 FAULT/STATUS CODE OUTDOOR SYSTEM TROUBLE SHOOTING TABLE 7: Outdoor Control Faults/Status Code Display Left Triangle Right Triangle Outdoor Control Description Outdoor Display Text Indication Indication (Outdoor Screen) (Outdoor Screen) Control Fault Outdoor Control Failure CONTROL FAILURE – – (solid) Operational Faults High-pressure switch fault (not in lockout yet) HPS - OPEN... - Page 14 5284792-UIM-A-0317 TABLE 7: Outdoor Control Faults/Status Code Display Left Triangle Right Triangle Outdoor Control Description Outdoor Display Text Indication Indication (Outdoor Screen) (Outdoor Screen) SUCTION TEMP SENSOR – Suction temperature sensor failure (open) – (solid) OPEN – SOFT LOCKOUT Discharge pressure sensor failure (low volt- DISCHARGE PRESSURE SENSOR - –...
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Page 15: Inverter Drive Fault/Status Code Display
5284792-UIM-A-0317 TABLE 8: Inverter Drive Fault/Status Code Display Left Triangle Right Triangle Inverter Drive Description OD Display Text Indication Indication (Outdoor Screen) (Outdoor Screen) Inverter - Faults COMPRESSOR PHASE OVER CURRENT – Compressor Phase Over Current (solid) INVERTER DRIVE Yellow COMPRESSOR PHASE CURRENT FOLDBACK Compressor Phase Current Foldback Timeout (solid) -
Page 16: Ton Inverter Drive Led Location
5284792-UIM-A-0317 FIGURE 12: 2 Ton Inverter Drive LED Location FIGURE 13: 3 & 4 Ton Inverter Drive LED Location FIGURE 14: 5 Ton Inverter Drive LED Location Johnson Controls Unitary Products... - Page 17 5284792-UIM-A-0317 INVERTER DRIVE TROUBLE SHOOTING ELECTRICAL SHOCK HAZARD WARNING • Disconnect and lock out power before servicing. • Wait 2 minutes to ensure that drive capacitors are discharged before servicing. • Use compressor with grounded system only. • Molded electrical plug must be used for connection to compressor. BURN HAZARD WARNING •...
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Page 18: Troubleshooting - Fault And Protection Table
5284792-UIM-A-0317 TABLE 9: Troubleshooting – Fault and Protection Table Fault and Protection Check and Handling 1. Check the U/V/W connections on drive side. 2. Check the compressor motor windings. Compressor phase over current 3. Check the compressor is operating within specified limits. 4. -
Page 19: Instructing The Owner
5284792-UIM-A-0317 SECTION IX: INSTRUCTING THE OWNER TABLE 10: Sensor Connector Pin Definition Assist the owner with registering the unit warranty using the warranty High Pressure Signal card included with the unit, or preferably online at 3.3VDC www.upgproductregistration.com. It is strongly recommended to com- plete a startup sheet showing the critical readings of the unit at the time of commissioning, which can be uploaded as part of the online registra- tion process. -
Page 20: Wiring Diagram
5284792-UIM-A-0317 SECTION X: WIRING DIAGRAM DANGER - SHOCK HAZARD COLOR CODES LEGEND AMB - AMBIENT TEMP SENSOR BLK - BLACK TURN OFF ELECTRICAL POWER BEFORE SERVICING TO PREVENT POSSIBLE BLU - BLUE DPT - DISCHARGE PRESSURE DAMAGE TO THE EQUIPMENT AND DR - DEMAND RESPONSE BLU/WHT - BLUE w/WHITE STRIPE POSSIBLE PERSONAL INJURY. -
Page 21: Wiring Diagram - 3-5 Ton
5284792-UIM-A-0317 DANGER - SHOCK HAZARD LEGEND COLOR CODES AMB - AMBIENT TEMP SENSOR BLK - BLACK TURN OFF ELECTRICAL POWER BEFORE SERVICING TO PREVENT POSSIBLE DPT - DISCHARGE PRESSURE BLU - BLUE DAMAGE TO THE EQUIPMENT AND DR - DEMAND RESPONSE BLU/WHT - BLUE w/WHITE STRIPE POSSIBLE PERSONAL INJURY. -
Page 22: Start Up Sheet
5284792-UIM-A-0317 NOTES Johnson Controls Unitary Products... - Page 23 5284792-UIM-A-0317 SECTION XI: START UP SHEET Residential Split Variable Capacity System Unit Cooling With Electric Heat Start-Up Sheet Proper start-up is critical to customer comfort and equipment longevity Start-Up Date Company Name Start-Up Technician Dealer Training Certification Number Owner Information Name Address Daytime Phone...
- Page 24 Comments and Additional Job Details Page 2 of 2 (3/14/17) Subject to change without notice. Published in U.S.A. 5284792-UIM-A-0317 Copyright © 2017 by Johnson Controls, Inc. All rights reserved. Supersedes: Nothing York International Corp. 5005 York Drive Norman, OK 73069...
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