Selecting Refrigerant Tubing Size And Calculating The Amount Of Additional Charge - Sanyo SPW-X483GH56 Installation Instruction

1-11. Selecting Refrigerant Tubing Size and Calculating the Amount of Additional Charge

Table 1-17
Rating capacity
Type
Cooling
25 type: a 7.3
12 type: b 3.6
9 type: c 2.8
18 type: d 5.6
36 type: e 10.6
The tubing size is selected and the amount of additional charge can be found in the table of
refrigerant tubing sizes using the tubing system of each indoor unit.
Refrigerant amounts must be calculated for the amount of additional charge per 1m of narrow tube size.
Table 1-18 Additional Refrigerant Charge
Main tube A
B
C
D
Distribution 25 type:a
branch
12 type:b
9 type:c
18 type:d
36 type:e
Total amount
Unit: kw
Heating
8.0
4.2
3.2
6.3
11.4
Total cooling capacity of the
unit after the distribution joint
7.3 + 3.6 + 2.8 +5.6 + 10.6
= 29.9 kw
7.3 + 3.6 + 2.8 = 13.7 kw
3.6 + 2.8 = 6.4 kw
5.6 + 10.6 = 16.2 kw
7.3 kw (13 m)
3.6 kw ( 8 m)
2.8 kw (18 m)
5.6 kw ( 6 m)
10.6 kw (10 m)
Main tube A
Main tube B
5 m
Main tube D
16 m
Wide tube Narrow tube
28.58 (1 1/8) 12.7 (1/2)
19.05(3/4) 9.52 (3/8)
15.88(5/8) 9.52 (3/8)
25.4 (1) 12.7 (1/2)
15.88(3/8) 9.52 (3/8)
12.7 (1/2) 9.52 (3/8)
12.7 (1/2) 9.52 (3/8)
15.88(5/8) 9.52 (3/8)
19.05(3/4) 9.52 (3/8)
— —
12
S4179544
90 type
Main tube C
10 m 18 m
8 m
13 m
a b
25 12
6 m
d e
18 36
1Tubing 2 Additional
1 X 2
length refrigerant
30 m 125 g/m 3,750 g
5 m 75 g/m
10 m 75 g/m
20 m 125 g/m 2,500 g
13 m 75 g/m
8 m 75 g/m
18 m 75 g/m 1,350 g
6 m 75 g/m
10 m 75 g/m
— — 11,500 g
c
9
10 m
0019_M_I
375 g
750 g
975 g
600 g
450 g
750 g