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10HP Series LennoxHeat Pump Unit

Lennox 10HP Diplomat Series Heat Pump
Brand: Lennox
Series: 10HP
Name of Series: Diplomat
Service Manual: Click Here
Parts List: Click Here      
                               
The Lennox 10HP Diplomat was a high-efficiency residential split system heat pump unit in its time. It was available in 1.5, 2, 2.5, 3, 3.5, 4, and 5 ton capacities.

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

All 10HP sizes are equipped with crank case heaters which ensure the refrigerant and oil in the compressor stay seperate during cool periods of no operation.
10HP series units through 4 Tons can be matched with a thermal expansion valce or an RFCIVIII device on the indoor coil.

DO NOT USE AN AIR CONDITIONER COVER ON THIS UNIT  AS IT IS DESIGNED TO RUN ALL YEAR

The main components(repair parts)  for all 10HP 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
  • Reciprocating compressor: Circulates the refrigerant through the system changing the refrigerants state to facilitate heat transfer.
  • Reversing Valve: enables the unit to operate in a reverse cooling cycle. This is the component that makes the unit a heat pump.
  • Timer and Defrost Control:  Ensures the unit isn't short cycled or started and stopped before pressure equalization occurs and sets unit into defrost when required by either time or temperature.



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