LG AUUW09GA0 Engineering Product Data Book page 154

MULTI/SINGLE CAC
4. Refrigerant piping system
4.1 Piping System between outdoor unit / indoor unit
Single type
CAUTION
• Please check the product type. Piping installation and refrigerant charge varies depending on the type of
product.
For more information, please refer to the installation manual.
L
Notes
L (m) : Piping Length (Outdoor Unit ~ Indoor Unit)
H (m) : Height Difference (Outdoor Unit ~ Indoor Unit)
 Refrigerant additional charge calculation method
Additional Refrigerant = (L - A) x a
L (m) : Installed Piping Length (Outdoor Unit ~ Indoor Unit)
A (m) : Charge-less piping length
a (g/m) : Additional charging volume
* Refer to the specifications for detail information of A, a.
* If total additional charge value after calculation comes out to be negative, then do not consider additional charge.
CAUTION
• Capacity is based on standard length and maximum allowance length is on the basis of reliability.
• Improper refrigerant charge may result in abnormal cycle.
Indoor Unit
Refer to the specifications of Outdoor Unit for Maximum limit.
Installation of Outdoor Units
L
Indoor Unit
9