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26 Outside Unit
Refrigerant piping system
The calculation of the additional charge should take into account the length of pipe.
Product Charge (kg(lbs))
Additional charge (kg(lbs))
=
+
+
+
+
+
+=
+
x 0.237lbs/ft
x 0.178lbs/ft
x 0.116lbs/ft
x 0.079lbs/ft
x 0.041lbs/ft
x 0.015lbs/ft
CF(kg(lbs))
(Correction Factor)
If a negative result is obtained from
the calculation, no refrigerant needs
to be added.
A
A B
B
CAUTION
Total liquid pipe (m(ft)): Ø22.2mm (7/8inch)
Total liquid pipe (m(ft)): Ø19.05mm (3/4inch)
Total liquid pipe (m(ft)): Ø15.88mm (5/8inch)
Total liquid pipe (m(ft)): Ø12.7mm (1/2inch)
Total liquid pipe (m(ft)): Ø9.52mm (3/8inch)
Total liquid pipe (m(ft)): Ø6.35mm (1/4inch)
Total amount(kg(lbs))
Outside unit
Header branch
Indoor unit
Ex) 10HP
Additional Charge = A x 0.041 + B x 0.041 + C x 0.041
+ D x 0.041 + E x 0.015 + HR + CF
= 164 x 0.041 + 33 x 0.041 + 33 x 0.041
+ 33 x 0.041 + 33 x 0.015 + 0(CF)
= 11.3lbs (5.1kg)
A : Ø9.52 (3/8), 50m (164ft)
B : Ø9.52 (3/8), 10m (33ft)
C : Ø9.52 (3/8), 10m (33ft)
D : Ø9.52 (3/8), 10m (33ft)
E : Ø 6.35 (1/4), 10m (33ft)
Note:
Fill in the f-gas Label attached on outside about the quantity of the fluorinated greenhouse gases
① Manufacturing site (See Model Name label)
② Installation site (If possible being placed adjacent to the service points for the addition or removal of refrigerant)
③ The total Charge (①+②)
# : Use only ARNU153BGA2, ARNU183BGA2, ARNU243BGA2
##: Use only ARNU093TPAA, ARNU123TPAA, ARNU153TPAA, ARNU183TNAA, ARNU243TNAA
n Correction factor of Indoor unit
(Unit : lbs)
Capacity (Btu/h)
Type
5k 7k 9k 12k 15k 18k 24k 28k 30k 36k 42k 48k 54k
Ceiling Consealed Duct(Low Static)
0.37 0.37 0.37 0.37 0.82 0.82
Ceiling Consealed Duct(High
Static)
0.57 0.57 0.57
0.57
0.97
#
0.57
0.97
#
0.57
0.97
#
0.97 0.97 0.97 1.37 1.37
Wall Mounted(ARTCOOL Mirror)
0.53 0.53 0.53 0.53 0.62 0.62
1way Ceiling Cassette
0.44 0.44 0.44
2way Ceiling Cassette
0.35 0.35
4way Ceiling Cassette
0.40 0.40
0.55
1.17
##
0.55
1.17
##
0.71
1.17
##
0.71
1.48
##
1.06
1.48
##
1.06 1.41 1.41 1.41
Floor Standing
0.37 0.37 0.37 0.37 0.82 0.82
Ceiling & Floor
0.22 0.22
Ceiling Suspended
0.77 0.77
Vertical AHU
1.04
1.04 1.04 1.04 1.57 2.00 2.00 2.00
Calculation of amount of refrigerant
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