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volume
B． Additional refrigerant charging volume on site
Additional charging standard of liquid pipe
Liquid pipe
Dia.
25.4 22.22 19.05 15.88 12.7 9.52 6.35
Additional
charging
volume
per meter
（kg/m）
0.53 0.4 0.28 0.2 0.12 0.06 0.03
Calculating method of additional refrigerant charging volume
● Charging volume of refrigerant pipe （ Additional charging
volume）:
length of liquid pipe× additional charging amount per meter liquid pipe
● Additional charging amount =（L1×0.53）+（L2×0.4）+（L3×0.28）
+（L4×0.2）+（L5×0.12）+（L6×0.06）+（L7×0.03）
L1: length of dia.25.4 liquid pipe
L2: length of dia.22.22 liquid pipe
L3: length of dia.19.05 liquid pipe
L4: length of dia.15.88 liquid pipe
L5: length of dia.12.7 liquid pipe
L6: length of dia.9.52 liquid pipe
L7: length of dia.6.35 liquid pipe
Remark: A, Charging volume when out of factory excludes refrigerant
in the pipe.
B, Actual additional charging amount should be within the
figure ±5％，which is calculated additional charging amount according
to the pipe length
Part 2
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