Daikin FDBG71AVE [40/50] Field piping

ED41-015B Field Piping

FDBG-A Series 39

14.Field Piping

14.1 Field piping

14.1.1 Maximum Allowable Piping Length and Level Difference

14.1.2 Additional Refrigerant Charge

y This unit requires additional charging of refrigerant according to the length of pipe connected at the site.

The range where no charging is required. (R25J

· 35J · 50G : 10 m or less, R60G · 71FU : 5 m or less.)

Take the following steps for proper charging.

y Select the amount of refrigerant which matches a length which exceeds the charge-less length from

Table 1

and 2, and add it.

Write down the amount of extra refrigerant added in accordance with the precaution plate on the rear

surface of the front plate, as this is necessary for after-sales service.

 R25J

· 35J · 50G

 R71FU

14.1.3 Recharging Refrigerant

 R71FU

When the entire refrigerant pipe length is within 5 meters, charge the refrigerant in accordance with the

amount mentioned on the nameplate, and when the pipe length exceeds 5 meters, the charging amount is

an addition of the amount stated on the nameplate and the additional charging amount.

C : 1PN01324A-1

R25 · 35J R50 · 60G R71FU

Max. Allowable Piping Length 25 m 30 m 50 m (Equivalent Length 70 m)

Max. Allowable Level Difference 15 m 15 m 30 m

When Connected to Indoor Unit

Table 1

R25J

· 35J · 50G R60G

Additional Charge 20g/m (Exceeding 10 m) 20g/m (Exceeding 5 m)

Table 2 (The maximum allowable pipe length is 50 meters.)

Length of Pipe Connected (L) 5m 10m 15m 20m 25m 30m 35m 40m 45m 50m

Additional Charging Amount — 0.13 0.25 0.38 0.50 0.63 0.75 0.88 1.00 1.13