Fujitsu AIRSTAGE J-IIIL - Additional Charge Calculation

2-5. Additional charge calculation
NOTES:
• The outdoor unit is charged refrigerant at the factory.
• Additional refrigerant required to be charged on site depending on pipe length and outdoor unit
model.
• The additional refrigerant charge amount is calculated according to the following formula.
• Round up the calculated result to two decimal places.
¢
Calculation formula
• Calculation of additional amount for pipe length (A)
Diameter of liquid pipe a: Additional amount for pipe length
in (mm) lb/ft (kg/m)
Ø1/4 (6.35) 0.014 (0.021)
Ø3/8 (9.52) 0.039 (0.058)
Ø1/2 (12.70) 0.077 (0.114)
A =
Total length of
Ø1/2 in
(12.70 mm)
liquid pipe
a:
× 0.077 lb/ft
(0.114 kg/m)
+
Total length of
Ø3/8 in (9.52 mm)
liquid pipe
a:
× 0.039 lb/ft
(0.058 kg/m)
+
in (mm) in (mm)
lb (kg) lb (kg)
Total length of
Ø1/4 in (6.35 mm)
liquid pipe
a:
× 0.014 lb/ft
(0.021 kg/m)
=
Total
in (mm)
lb (kg)
lb (kg)
A =
lb (kg)
Round up A to 2 decimal place.
• Factory charge amount (B)
Model name Ton b: Factory charged amount
AOU72RLAVL 6
24.25 lb (11.0 kg)AOU96RLAVL 8
AOU120RLAVL 10
B =
b: Outdoor unit
Factory charge amount
lb (kg)
2-5. Additional charge calculation - (06-26) - 2. Piping design
SYSTEM DESIGN SYSTEM DESIGN