Fujitsu AJ 126LELDH Series - 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
mm kg/m
Ø6.35 0.021
Ø9.52 0.058
Ø12.70 0.114
A =
Total length of
Ø12.70 mm
liquid pipe
a:
× 0.114 kg/m
+
Total length of
Ø9.52 mm
liquid pipe
a:
× 0.058 kg/m
+
m
m
kg kg
Total length of
Ø6.35 mm
liquid pipe
a:
× 0.021 kg/m
=
Total
m
kg
kg
A =
kg
Round up A to 2 decimal place.
• Factory charge amount (B)
Model name HP
b: Factory charged amount
kg
AJ072LELDH
8 7.0
AJ090LELDH
10 7.5
AJ108LELDH
12 7.5
AJ126LELDH
14 11.0
AJ144LELDH
16 11.0
AJ162LELDH
18 11.8
B =
b: Outdoor unit
Factory charge amount
kg
2-5. Additional charge calculation - (06-27) - 2. Piping design
SYSTEM DESIGN SYSTEM DESIGN