Allied Air Enterprises 4AC16LT Flushing Connections, Flushing Existing Line Set and Indoor Coil

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Flushing Existing Line Set and Indoor Coil

This procedure should not be performed on systems which contain contaminants, such as compressor burn out.

CAUTION

When flushing existing line set and/or indoor coil, be sure to empty all existing traps. Residual mineral oil can act as an insulator, preventing proper heat transfer. It can also clog the thermal expansion valve, reducing system performance and capacity. Failure to properly flush system as explained in these instructions will void warranty.

Required Equipment

The following equipment is needed to flush the existing line set and indoor coil (see Figure 8): Two clean R22 recovery bottles, an oil-less recovery machine with a “pump down” feature, and two sets of gauges (one for use with R22 and one for use with R410A).

Flushing Procedure

IMPORTANT: The line set and/or indoor coil must be flushed with at least the same amount of refrigerant that previously charged the system. Check the charge in the flushing cylinder before flushing the unit.

1.Remove existing R22 refrigerant using the appropriate procedure.

If the existing outdoor unit is not equipped with shutoff valves, or if the unit is not operational AND the existing

R22 refrigerant will be used to flush the system:

Disconnect all power to the existing outdoor unit. Connect the existing unit, a clean recovery cylinder, and the recovery machine according to the instructions provided with the recovery machine. Remove all R22 refrigerant from the existing system. Refer to the gauges after shutdown to confirm that the entire system is completely void of refrigerant. Disconnect the liquid and suction lines from the existing outdoor unit.

If the existing outdoor unit is equipped with manual shutoff valves AND new R22 refrigerant will be used to flush the system:

Start the existing R22 refrigerant system in cooling mode and close the liquid line valve. Pump all the existing R22 refrigerant back into the outdoor unit.

Flushing Connections

Note: The inverted R22 cylinder must contain at least the same amount of refrigerant as was recovered from the existing system.

Figure 8

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Contents Lennox International Inc. Company 4AC16LT SeriesSlab Mounting InstallationInstallation Clearances Torque TableRefrigerant Piping Electrical WiringSlab Mounting Thermostat DesignationsPlacement Installing Refrigerant LineLine Set Isolation Refrigerant Line Sets Installing Horizontal Runs Outside Unit Placement InstallationRefrigerant Metering Device on Refrigerant Line Sets Transition from Vertical to Horizontal Flushing Existing Line Set and Indoor Coil Flushing ConnectionsTXV Data Refrigerant Metering DeviceSuction Line Ball Type Service Valve Liquid and Suction Line Service ValvesTo Access the Schrader Port To Close Liquid or Suction Line Service ValveEvacuation Ball Type Service Valve Valve OpenLeak Testing Using an Electronic Leak DetectorPage START-UP Refrigerant Charge AdjustmentRefrigerant Charging Blocking Outdoor Coil Charge Using Weigh-In MethodSubcooling Values R410A Temperature/Pressure ChartApproach Values for TXV Systems Issue Operation Interpreting the Diagnostic LEDs24VAC Power Wiring Thermostat Demand WiringLED Flash CodesFault Description Troubleshooting Information Status Sensing holes Miswired Module TroubleshootingIndoor Coil MaintenanceIndoor Unit Start-Up and Performance Checklist Wiring Diagram P/N

4AC16LT specifications

The Allied Air Enterprises 4AC16LT is a highly efficient air conditioning unit designed to provide optimal cooling solutions for residential and light commercial applications. This model exemplifies the balance of innovative technology and user-friendly features, making it a popular choice for homeowners and contractors alike.

One of the standout characteristics of the 4AC16LT is its ENERGY STAR certification, which signifies its energy efficiency and eco-friendly operation. The unit is engineered to reduce energy consumption while delivering reliable performance, ultimately helping to lower electricity bills for consumers.

The 4AC16LT features a scroll compressor, a technology known for its durability and efficiency. This compressor design not only improves the overall cooling efficiency but also minimizes operational noise, providing a quiet and comfortable indoor environment. The unit's sound levels are notably reduced, making it ideal for residential settings where noise can be a significant concern.

In addition to its efficient compressor, the unit boasts a range of advanced technologies. The integrated smart diagnostic features allow technicians to quickly identify and troubleshoot issues, streamlining maintenance and reducing downtime. This is particularly beneficial for contractors, as it enhances service response times and customer satisfaction.

The 4AC16LT is also equipped with a durable cabinet design, which is resistant to rust and corrosion, ensuring longevity and reliability in various environmental conditions. The pre-painted steel casing not only enhances the unit’s durability but also adds an aesthetic appeal that blends well with most home exteriors.

Further enhancing its appeal, the unit utilizes environmentally friendly refrigerants that comply with current regulations. This commitment to sustainability demonstrates Allied Air Enterprises’ focus on innovation while caring for the environment.

Moreover, the model is designed with ease of installation in mind. The compact size and lightweight construction of the 4AC16LT facilitate straightforward installation, saving time and labor costs for technicians.

In summary, the Allied Air Enterprises 4AC16LT air conditioning unit is a top-tier choice that incorporates energy efficiency, advanced technology, and a user-friendly design. Its combination of quiet operation, robust features, and commitment to sustainability makes it an excellent investment for anyone seeking reliable indoor comfort.
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