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Outdoor-air processing unit

Image of Outdoor-air processing unit

Using a single system

Air conditioning and outdoor air processing can be accomplished using a single system.

Illustration showing the air movement when the outdoor-air processing unit is used in combination with VRV III

Connection Conditions

The following restrictions must be observed in order to maintain the indoor units connected to the same system.

  • The total connected capacity of the standard indoor units and outdoor-air processing units must be between 50% and 100% of the capacity of outdoor units. The connected capacity of the outdoor-air processing unit must not exceed 30% of the capacity of outdoor units.
  • An outdoor-air processing unit can be used exclusively. The connected capacity of the outdoor-air processing unit must be between 50% and 100% of the capacity of outdoor units.
  • Connectable outdoor units: VRV II and III systems

System Example

Check to make sure that your system's connected capacity is within the appropriate range.

Illustration of a system example
  • Total connected capacity of standard indoor units and outdoor-air processing unit does not exceed 100%. OK, because system capacity of 20 HP = indoor unit capacity of 20 HP.
  • Connected capacity of outdoor-air processing unit does not exceed 30% of this. OK, because system capacity of 20 HP x 0.3 = 6 HP > outdoor-air processing unit capacity of 5 HP.
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