Mitsubishi Electric CITY MULTI, Data Book

Page: 345 / 372

MEES19K187
PQ
HY-P-T
(S)L
MU-A
1, Y(S)L
M
U-A
1, Z(
S)
LMU
-A1
334
1. Piping Design
A
B C D
e
a b c d
Indoor 1: P48 A: 40 m a: 10 m
2: P36 B: 10 m b: 5 m
3: P24 15 m c: 10 m
4: P12 10 m d: 10 m
5: P24 e: 10 m
The total length of liquid pipe of each size is as follows:
12.7 : A = 40 = 40 m
9.52 : B + C + D + a + b + c + e = 10 + 15 + 10 + 10 + 5 + 10 + 10 = 70 m
6.35 : d = 10 = 10 m
Example: PQHY-P144TLMU/YLMU
P24 P36 P48 P12 P24
= + + + + + 124
+ + + +
+ 124
(oz) 0 (ft.) x 2.80 (oz/ft.)
Additional
refrigerant charge
=
0 0 131 x 1.19 225 x 0.59 32 x 0.23
= 420 [oz]
Total length of liquid
x 2.80 (oz/ft.)
0 (ft.) x 1.94 (oz/ft.)
Total length of liquid
x 1.94 (oz/ft.)
131 (ft.) x 1.19 (oz/ft.)
Total length of liquid
x 1.19 (oz/ft.)
225 (ft.) x 0.59 (oz/ft.)
Total length of liquid
x 0.59 (oz/ft.)
32 (ft.) x 0.23 (oz/ft.)
Total length of liquid
x 0.23 (oz/ft.)
= + + + + + 3.5
+ + + + + 3.5
(kg) 0 (m) x 0.26 (kg/m)
Additional
refrigerant charge
=
0 0 40 x 0.11 70 x 0.054 10 x 0.021
= 11.9 kg
Total length of liquid
x 0.26 (kg/m)
0 (m) x 0.18 (kg/m)
Total length of liquid
x 0.18 (kg/m)
40 (m) x 0.11 (kg/m)
Total length of liquid
x 0.11 (kg/m)
70 (m) x 0.054 (kg/m)
Total length of liquid
x 0.054 (kg/m)
10 (m) x 0.021 (kg/m)
Total length of liquid
x 0.021 (kg/m)
m [kg]
m [kg]
ft. [oz]
ft. [oz]
or
Total capacity of connecting Indoor units Pt :
Pt = P48 + P36 + P24 + P12 + P24 = P144, therefore = 3.5kg
Indoor 1: P48 A: 131ft. 32ft.
2: P36 B: 32ft. b: 16ft.
3: P24 C: 49ft. c: 32ft.
4: P12 D: 32ft. d: 32ft.
5: P24 e: 32ft.
The total length of liquid pipe of each line is as follows:
Total capacity of connecting Indoor units Pt :
A = 131 = 131ft.
B + C + D + a + b + c + e = 32 + 49 + 32 + 32 + 16 + 32 + 32 = 225ft.
d = 32 = 32ft.
Pt = P48 + P36 + P24 + P12 + P24 = P144, therefore = 124oz
The above calculation result of the amount of refrigerant to be charged must become below the value in the table below.
Limitation of the amount of refrigerant to be charged
Total index of the heat source units
P72 P96 P120 P144 P168
T/YLMU T/YLMU T/YLMU T/YLMU T/YLMU
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
Charged on site
48 lbs
9 oz
62 lbs
14 oz
65 lbs
1 oz
92 lbs
10 oz
113 lbs
9 oz
Total for system
59 lbs
9 oz
73 lbs
14 oz
76 lbs
1 oz
105 lbs
14 oz
126 lbs
13 oz
26 lbs
8 oz
148 lbs
13 oz
175 lbs
5 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
Charged on site
22.0kg 28.5kg 29.5kg 42.0kg 51.5kg
Total for system
27.0kg 33.5kg 34.5kg 48.0kg 57.5kg
P216
T/YLMU
25 lbs
13 oz
123 lbs
8 oz
149 lbs
5 oz
P192
T/YLMU
13 lbs
4 oz
118 lbs
0 oz
131 lbs
3 oz
11.7kg
56.0kg
67.7kg
6.0kg
53.5kg
59.5kg
P168
T/YSLMU
22 lbs
1 oz
113 lbs
9 oz
135 lbs
10 oz
P144
T/YSLMU
22 lbs
1 oz
92 lbs
10 oz
114 lbs
11 oz
10.0kg
51.5kg
61.5kg
10.0kg
42.0kg
52.0kg
Total index of the heat source units
Maximum refrigerant charge
Factory charged
Charged on site
Total for system
P336
T/YSLMU
P360
T/YSLMU
Factory charged
Charged on site
Total for system
12.0kg
67.5kg
79.5kg
26 lbs
8 oz
148 lbs
13 oz
175 lbs
5 oz
26 lbs
8 oz
148 lbs
13 oz
175 lbs
5 oz
P288
T/YSLMU
P312
T/YSLMU
12.0kg
67.5kg
79.5kg
12.0kg
67.5kg
79.5kg
25 lbs
13 oz
125 lbs
11 oz
151 lbs
8 oz
P240
T/YLMU
11.7kg
57.0kg
68.7kg
22 lbs
1 oz
121 lbs
5 oz
143 lbs
5 oz
22 lbs
1 oz
118 lbs
0 oz
140 lbs
0 oz
P216
T/YSLMU
P192
T/YSLMU
10.0kg
55.0kg
65.0kg
10.0kg
53.5kg
63.5kg
22 lbs
1 oz
123 lbs
8 oz
145 lbs
9 oz
P240
T/YSLMU
10.0kg
56.0kg
66.0kg
12.0kg
70.0kg
82.0kg
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