Daikin ARXN50LV1B [12/25] Additional charge

1-10

Model ATXN25LV1B ATXN35LV1B ATXN50LV1B ATXN60LV1B

Min. Allowable Length (L), m 3 3

Max. Allowable Length (L), m 20 30

Max. Allowable Elevation (E), m 10 10

Gas Pipe Size, mm/(in) 9.52 (3/8") 12.70 (1/2") 15.88 (5/8")

Liquid Pipe Size, mm/(in) 6.35 (1/4") 6.35 (1/4")

L E

Indoor ATXN25LV1B ATXN35LV1B ATXN50LV1B ATXN60LV1B

Outdoor ARXN25LV1B ARXN35LV1B ARXN50LV1B ARXN60LV1B

Additional charge [g/m] 20 20 20 20

Additional refrigerant charge [g] per additional 1m length as tabulated

*Be sure to add the proper amount of additional refrigerant. Failure to do so may result in reduced performance.

Remark: The refrigerant pre-charged in the outdoor unit is for piping length up to 7.5m.

Outdoor Unit

Indoor unit

Allowable Piping Length

If the pipe is too long, both the capacity and reliability of the unit will drop. As the number of bends increases, resistance to

the flow of refrigerant system increases, thus lowering cooling capacity. As a result, the compressor may become defective.

Always choose the shortest path and follow the recommendations as tabulated below:

REFRIGERANT PIPING

Additional Charge

The refrigerant is pre-charged in the outdoor unit. If the piping length is less than 7.5m, then additional charge after vacuuming

is not necessary. If the piping length is more than 7.5m, then use the additional charge value as indicated in the table.

Example:

ATXN25LV1B & ARXN25LV1B with 12m piping length, additional piping length is 4.5m. Thus,

Additional charge = 4.5[m] x 20[g/m]

= 90.0[g]