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10ACC Series Lennox Air Conditioning Unit

Lennox 10ACC Merit Series Brand: Lennox
Series: 10ACC
Name of Series: Merit
Service Manual: Click Here
Parts List: Click Here

The Lennox 10ACC was a high-efficiency residential split system condensing unit in its time. It was available in 1-1/2, 2, 2-1/2, 3, 3-1/2, 4, and 5 ton capacities. The series was designed for use with a thermal expansion valve (TXV) or a RFCIV system (Piston). The 10ACC60 required that a thermal expansion valve be used.

Considered a high SEER unit in its day, the 10ACC Series could achieve 10 SEER. The minimum SEER allowed for installation today due to energy consumption is 13 SEER. Models are available up to 21 SEER today.

The main components(repair parts)  for all 10ACC Series units include:
  • Main Contactor: Energizes the compressor and fan on a call for cooling
  • Dual Capacitor: Creates a phase shift to start and run both the compressor and contactor
  • Fan Motor and Blade: Circulates air through the condensing coils removing and expelling heat collected
  • Compressor: Circulates the refrigerant through the system changing the refrigerants state to facilitate heat transfer. Units were produced with either a reciprocating or scroll compressor.



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