Allied Air Enterprises 4AC18LT manual Maintenance, Indoor Coil, Indoor Unit

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MAINTENANCE

WARNING

Before performing maintenance operations on system, turn the electric power to unit OFF at disconnect switch(es). Unit may have multiple power supplies. Electrical shock could cause personal injury or death.

Maintenance and service must be performed by a qualified installer or service agency.

At the beginning of each cooling season, the system should be checked as follows:

1.Clean and inspect condenser coil. Coil may be flushed witha a water hose. Be sure the power is off before usig water to clean the coil.

2.Outdoor fan motor is pre-lubricated and sealed. No further lubrication is needed.

3.Visually inspect connecting lines and coils for evidence of oil leaks.

4.Check wiring for loose connections.

5.Check for correct voltage at unit (with unit operating).

6.Check amp-draw outdoor fan motor.

Unit nameplate ____________ Actual __________

NOTE: If owner complains of insufficient cooling, the unit should be gauged and refrigerant charge checked. Refer to the Refrigerant Charging section on page 12.

Indoor Coil

1.Clean coil, if necessary.

2.Check connecting lines and coils for evidence of oil leaks.

3.Check condensate pan line and clean, if necessary.

Indoor Unit

1.Clean or change filters.

2.Adjust blower speed for cooling. Measure the pressure drop over the coil to determine the correct blower CFM.

3.Belt drive blowers: Check belt for wear and proper tension.

4.Check all wiring for loose connections.

5.Check for correct voltage at unit (with unit operating).

6.Check amp-draw on belower motor.

Unit nameplate_____________ Actual _________

506469-01

Issue 1008

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Contents Lennox International Inc. Company 4AC18LT SeriesInstallation Clearances InstallationTorque Table GeneralSlab Mounting Electrical WiringSlab Mounting Roof MountingOutside Unit Placement & Installation PlacementLine Set Isolation Refrigerant Line Set DiametersInstalling Refrigerant Line Thermostat DesignationsRefrigerant Piping Refrigerant Line Sets Installing Horizontal Runs Refrigerant Line Sets Transition from Vertical to Horizontal Required Euipment Flushing ProcedureRefrigerant Metering Device Expansion Valve SystemsTXV Data To Close Liquid or Suction Line Service Valve To Access the Schrader PortEvacuation Using an Electronic Leak DetectorIssue Refrigerant Charge Adjustment START-UPRefrigerant Charging Blocking Outdoor Coil Check Charge Using Normal Operating Pressures R410A Temperature/Pressure ChartSubcooling Values Approach Values for TXV SystemsIssue Operation Flash Codes Flash Codes Miswired Module Troubleshooting Maintenance Indoor CoilIndoor Unit Start-Up and Performance Checklist Wire Diagram Issue

4AC18LT specifications

Allied Air Enterprises has made significant strides in the HVAC industry with the introduction of its 4AC18LT air conditioner. This model is part of a premium line of products that emphasizes efficiency, reliability, and advanced cooling technology. The 4AC18LT is specifically designed to meet the diverse needs of both residential and light commercial applications, making it a versatile choice for many consumers.

One of the standout features of the 4AC18LT is its impressive Seasonal Energy Efficiency Ratio (SEER) rating. With a SEER rating of up to 18, this unit is engineered to provide excellent energy efficiency, significantly reducing electricity consumption while delivering consistent cooling performance. As energy costs continue to rise, homeowners and businesses can benefit greatly from this efficiency, leading to lower monthly utility bills and a reduced carbon footprint.

The 4AC18LT employs advanced R-410A refrigerant, which is known for its environmentally friendly properties. Unlike older refrigerants that contribute to ozone depletion, R-410A is more stable and offers better heat transfer capabilities, which enhances the overall performance of the unit. This focus on eco-friendliness aligns with contemporary environmental standards and regulations, ensuring that users are making a responsible choice for their cooling needs.

In terms of design, the 4AC18LT features a robust and compact frame that is built to withstand the rigors of outdoor installation. The unit's durability is further enhanced by its corrosion-resistant finish, which protects the coil and cabinet from harsh weather conditions, extending the life span of the system.

Noise reduction technology is another highlight of the 4AC18LT. This model is designed with a quieter operation in mind, utilizing a sound blanket and insulated compressor compartment. These features work together to minimize noise levels, allowing users to enjoy a comfortable indoor environment without disruptive sound.

The 4AC18LT also supports advanced controls and compatibility with smart thermostats, providing users with greater flexibility and convenience. Homeowners can take advantage of programmable features, enabling them to optimize cooling schedules for energy savings and increased comfort.

Overall, Allied Air Enterprises’ 4AC18LT air conditioner combines efficiency, environmental responsibility, durability, and user-friendly features, making it an excellent choice for those in need of reliable cooling solutions. Whether installed in a residential or light commercial setting, the 4AC18LT promises to deliver exceptional performance and peace of mind.
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