MEES21K047
PQ
R
Y-
P-
Z(
S)
LM
U
-A
1
126
12. PIPING DESIGN
WR2-Series-575V
Amount of factory charged refrigerant
Sample calculation
Heat source unit
Model
P144
Charged amount
6.0 kg
5.0 kg
P192
P168
P120
P96
P72
=
=
Indoor
A:
B:
C:
D:
E:
F:
L:
M:
ø28.58 [1-1/8"]
ø9.52 [3/8"]
ø12.70 [1/2"]
ø9.52 [3/8"]
ø9.52 [3/8"]
ø9.52 [3/8"]
ø22.20 [7/8"]
ø22.20 [7/8"]
40 m [131ft.]
10 m [32ft.]
20 m [65ft.]
5 m [16ft.]
5 m [16ft.]
5 m [16ft.]
3 m [9ft.]
1 m [3ft.]
1:
2:
3:
4:
5:
6:
7:
8:
P18
P96
P06
P06
P48
P36
P30
P18
a:
b:
c:
d:
e:
f:
g:
h:
ø6.35 [1/4"]
ø9.52 [3/8"]
ø6.35 [1/4"]
ø6.35 [1/4"]
ø9.52 [3/8"]
ø9.52 [3/8"]
ø9.52 [3/8"]
ø6.35 [1/4"]
10 m [32ft.]
10 m [32ft.]
5 m [16ft.]
5 m [16ft.]
5 m [16ft.]
5 m [16ft.]
5 m [16ft.]
10 m [32ft.]
Heat source unit: P288
Total capacity of indoor units: 258
Main BC controller: CMB-P108NU-JA1
Sub BC controller: CMB-P104NU-KB1 × 4
Total length for each pipe size:
ø28.58 [1-1/8"]
ø22.20 [7/8"]
ø12.70 [1/2"]
ø9.52 [3/8"]
ø6.35 [1/4"]
A = 40 m [131ft.]
L + M = 3 + 1 = 4 m [12ft.]
C = 20 m [65ft.]
B + D + E + F + b + e + f + g = 50 m [160ft.]
a + c + d + h = 30 m [96ft.]
Therefore, additional refrigerant charge
= 40 × 0.33 + 4 × 0.21 + 20 × 0.11 + 50 × 0.054 + 30 × 0.021 + 3 + 0.4 × 4 + 6
(kg)
=
kg
kg
or
Therefore, additional refrigerant charge
= 131 × 3.54 + 12 × 2.26 + 65 × 1.19 + 160 × 0.59 + 96 × 0.23 + 106 + 15 × 4 + 212
(oz)
=
oz
oz
30.17
30.2
1062.69
1062.7
The above calculation result of the amount of refrigerant to be charged must become below the value in the table below.
If the amount of refrigerant exceeds the value in the below table, please redesign the system.
Limitation of the amount of refrigerant to be charged
Total index of the heat source units
P72
P96
P120
P144
P168
P192
P168
ZLMU
ZLMU
ZLMU
ZLMU
ZLMU
ZLMU
ZSLMU
Maximum refrigerant charge
Factory charged
11 lbs
1 oz
11 lbs
1 oz
11 lbs
1 oz
13 lbs
4 oz
13 lbs
4 oz
13 lbs
4 oz
22 lbs
1 oz
Charged on site
61 lbs
12 oz
66 lbs
3 oz
68 lbs
6 oz
101 lbs
7 oz
103 lbs
10 oz
105 lbs
14 oz
110 lbs
4 oz
Total for system
72 lbs
13 oz
77 lbs
3 oz
79 lbs
6 oz
114 lbs
11 oz
116 lbs
14 oz
119 lbs
1 oz
132 lbs
5 oz
P144
ZSLMU
22 lbs
1 oz
108 lbs
1 oz
130 lbs
2 oz
22 lbs
1 oz
114 lbs
11 oz
136 lbs
11 oz
22 lbs
1 oz
112 lbs
7 oz
134 lbs
8 oz
26 lbs
8 oz
154 lbs
6 oz
180 lbs
13 oz
22 lbs
1 oz
119 lbs
1 oz
141 lbs
2 oz
26 lbs
8 oz
160 lbs
15 oz
187 lbs
7 oz
26 lbs
8 oz
154 lbs
6 oz
180 lbs
13 oz
Factory charged
5.0kg
5.0kg
5.0kg
6.0kg
6.0kg
6.0kg
10.0kg
Charged on site
28.0kg
30.0kg
31.0kg
46.0kg
47.0kg
48.0kg
50.0kg
Total for system
33.0kg
35.0kg
36.0kg
52.0kg
53.0kg
54.0kg
60.0kg
10.0kg
49.0kg
59.0kg
Total index of the heat source units
Maximum refrigerant charge
Factory charged
Charged on site
Total for system
P216
ZSLMU
P192
ZSLMU
P288
ZSLMU
P240
ZSLMU
P336
ZSLMU
P312
ZSLMU
Factory charged
Charged on site
Total for system
10.0kg
52.0kg
62.0kg
10.0kg
51.0kg
61.0kg
12.0kg
70.0kg
82.0kg
10.0kg
54.0kg
64.0kg
12.0kg
73.0kg
85.0kg
12.0kg
70.0kg
82.0kg
0000006382.BOOK 126 ページ ２０２１年７月１９日 月曜日 午後４時１４分
