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This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in
manuals, be alert to the potential for personal injury or death.
Table of Contents
Installation ...................................................................2
Start-Up .....................................................................10
Operation ...................................................................14
Maintenance ..............................................................18
WARNING
Installation and servicing of air conditioning equipment
can be hazardous due to internal refrigerant pressure
and live electrical components. Only trained and
qualified service personnel should install or service
this equipment. Installation and service performed by
unqualified persons can result in property damage,
personal injury, or death.
WARNING
Sharp metal edges can cause injury. When installing
the unit, use care to avoid sharp edges.
Manufactured By
Allied Air Enterprises LLC
A Lennox International, Inc. Company
215 Metropolitan Drive
West Columbia, SC 29170
506467-01
INSTALLATION INSTRUCTIONS
4AC16LT SERIES
Split System Air Conditioner
This manual must be left with the homeowner for future reference.
Save these instructions for future reference
The equipment covered in this manual is to be installed
by trained and experienced service and installation
technicians. Improper installation, modification, service,
or use can cause electrical shock, fire, explosion, or
other conditions which may cause personal injury,
death, or property damage. Use appropriate safety gear
including safety glasses and gloves when installing this
equipment.
ELECTRICAL SHOCK HAZARD!
Risk of electrical shock. Disconnect all
remote power supplies before installing
or servicing any portion of the system.
Failure to disconnect power supplies
can result in property damage, personal
injury, or death.
*P506467-01*
Issue 1827
WARNING
WARNING
(P) 506467-01
Page 1 of 20
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Related Manuals for Allied Lennox 4AC16LT Series
Summary of Contents for Allied Lennox 4AC16LT Series
- Page 1 Sharp metal edges can cause injury. When installing injury, or death. the unit, use care to avoid sharp edges. Manufactured By *P506467-01* Allied Air Enterprises LLC A Lennox International, Inc. Company 215 Metropolitan Drive (P) 506467-01 West Columbia, SC 29170...
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Page 2: Installation
include a request for inspection by the carrier’s agent. If Installation any damages are discovered and reported to the carrier DO NOT INSTALL THE UNIT, as claim may be denied. General Check the unit rating plate to confirm specifications are as Read this entire instruction manual, as well as the ordered. - Page 3 Electrical Wiring Do not bundle any excess 24V control wire inside control box. Run control wire through installed wire tie All field wiring must be done in accordance with the and tighten wire tie to provide low voltage strain relief National Electrical Code...
- Page 4 Use silver alloy brazing rods (5% or 6% silver alloy for copper-to-copper brazing or 45% silver alloy for CAUTION copper-to-brass or copper-to-steel brazing) which are rated for use with R410A refrigerant. If ANY refrigerant tubing is required to be buried by state or local codes, provide a 6 inch vertical rise at service Remove the Schrader core assemblies before brazing valve.
- Page 5 Figure 5. Refrigerant Line Sets: Installing Horizontal Runs Figure 6. Refrigerant Line Sets: Transition from Vertical to Horizontal 506467-01 Issue 1827 Page 5 of 20...
- Page 6 NOTE: Similar installation practices should be used if line set is to be installed on exterior of outside wall. Figure 7. Refrigerant Line Sets: Installing Vertical Runs (new construction shown) Figure 8. Flushing Connections Page 6 of 20 Issue 1827 506467-01...
- Page 7 Flushing Existing Line Set and Indoor Coil Make low voltage and line voltage connections to the new outdoor unit. Do not turn on power to the unit or This procedure should not be performed on systems open the outdoor unit service valves at this time. that contain contaminants, such as compressor burn Remover the existing R-22 refrigerant flow control out.
- Page 8 To Access the Schrader Port Capacity Part Number 1. Remove the service port cap with an adjustable 4AC16LT -24, -36 A4TXV01 wrench. 4AC16LT -48 A4TXV02 Connect gauge to the service port. 4AC16LT -60 H4TXV03 When testing is completed, replace service port cap. Table 3.
- Page 9 WARNING Refrigerant can be harmful if inhaled. Refrigerant must always be used and recovered responsibly. Incorrect or irresponsible use of refrigerant can result in personal injury or death. WARNING Never use oxygen to pressurize refrigeration or air conditioning systems. Oxygen will explode on contact with oil and could cause personal injury or death.
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Page 10: Start-Up
Start-Up WARNING Do Not use a compressor to evacuate a system. Avoid deep vacuum operation. Extremely low vacuums can CAUTION cause internal arcing and compressor failure. Danger of If unit is equipped with a crankcase heater, it should equipment damage. Damage caused by deep vacuum be energized 24 hours before unit start-up to prevent operation will void warranty. - Page 11 68°F. When pressures have stabilized, use a digital Oz. per 5 ft. Adjust from 15 Liquid Line Set Diameter thermometer to record the liquid and suction line ft. Line Set* temperatures. 3/8 in. 3 oz. per 5 ft. The outdoor temperature will determine which * If line length is greater than 15 ft., add this amount.
- Page 12 1. Record outdoor ambient temperature using a digital Temp Pressure Temp Pressure Temp Pressure thermometer. °F psig °F psig °F psig Attach high pressure gauge set and operate unit for 100.8 214.0 396.0 several minutes to allow system pressures to stabilize. 102.9 217.4 401.3...
- Page 13 Normal Operating Pressures Low Capacity Outdoor Coil Entering Air Temp. °F High Capacity Outdoor Coil Entering Air Temp. °F Table 8. 506467-01 Issue 1827 Page 13 of 20...
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Page 14: Operation
24 VAC Power Wiring Operation The diagnostic module requires a constant nominal 24VAC power supply. The wiring to the module’s R and C terminals Outdoor unit and indoor blower cycle on demand from must be directly from the indoor unit or thermostat. the room thermostat. - Page 15 Flash Codes LED Status Fault Description Troubleshooting Information POWER Module has power Supply voltage is present at module terminals (Green) TRIP Thermostat demand signal 1. Compressor protector is open (Red) Y1 is present, but the • Check for high head pressure compressor is not running •...
- Page 16 LED Status Fault Description Troubleshooting Information ALERT Open Circuit 1. Outdoor unit power disconnect is open (Yellow) 2. Compressor circuit breaker or fuse(s) is open Flash Code 5 3. Compressor contactor has failed open • Check compressor contactor wiring and connectors •...
- Page 17 Mis-wired Module Troubleshooting Mis-wired Module Indication Recommended Troubleshooting Action Green LED is not on; module Determine if both R and C module terminals are connected. Verify voltage is present at module’s R does not power up and C terminals. Review 24VAC Power Wiring section for R and C wiring. Green LED intermittent;...
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Page 18: Maintenance
Indoor Coil Maintenance 1. Clean coil, if necessary. Check connecting lines and coils for evidence of oil leaks. WARNING Check condensate pan line and clean, if necessary. Before performing maintenance operations on system, Indoor Unit turn the electric power to unit OFF at disconnect 1. - Page 19 Start-Up and Performance Checklist Job Name: ______________________________________________ Job No. _________________ Date: ________________ Job Location: ____________________________________________ City: ____________________ State: ________________ Installer: ________________________________________________ City: ____________________ State: ________________ Unit Model No. ___________________________________________ Serial No. _______________________________________ Service Technician: _______________________________________ Nameplate Voltage: _______________________________ Rated Load Ampacity: ________________ Compressor Amperage: _________________ Outdoor Fan: ____________________ Maximum Fuse or Circuit Breaker: ____________________________ Electrical Connections Tight?
- Page 20 Figure 12. Wiring Diagram Page 20 of 20 Issue 1827 506467-01...
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