Mitsubishi Electric PQHY-P200-900Y(S)LM-A, Справочник данных, Страница: 198 / 246

195
S.D. WY
MEE15K036
3. Piping Design
SYSTEM DESIGN
A
B C D
e
a b c d
Indoor 1: P125 40 m 10 m
2: P100 10 m 5 m
3: P40 15 m 10 m
4: P32 10 m 10 m
5: P63 10 m
The total length of liquid pipe of each size is as follows:
ø12.7: A + e = 40 + 10 = 50 m
A: ø12.7 a: ø9.52
b: ø9.52
c: ø6.35
d: ø9.52
e: ø12.7
B: ø9.52
C: ø9.52
D: ø9.52
ø9.52: B + C + D + a + b + d = 10 + 15 + 10 + 10 + 5 + 10 = 60 m
ø6.35: c = 10 = 10 m
Example: PQHY-P350YLM
P40 P100 P125 P32 P63
= + + + + + 3.5
+ + + + + 3.5
+ 0
+ 0
(kg) 0 (m) x 0.26 (kg/m)
Additional
refrigerant charge
=
0 0 50 x 0.11 60 x 0.054 10 x 0.021
= 12.5 (12.45) 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)
50 (m) x 0.11 (kg/m)
Total length of liquid
x 0.11 (kg/m)
60 (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)
Total index of the heat source units
P200 P250 P300 P350 P400 P450 P500 P550 P400 P450 P500 P550 P600
YLM YLM YLM YLM YLM YLM YLM YLM YSLM YSLM YSLM YSLM YSLM
Maximum refrigerant charge
Factory charged 5.0kg 5.0kg 5.0kg 6.0kg 6.0kg 6.0kg 6.0kg 11.7kg 10.0kg 10.0kg 10.0kg 10.0kg 10.0kg
Charged on site 21.0kg 28.0kg 29.5kg 41.5kg 50.0kg 51.5kg 53.5kg 55.5kg 50.0kg 51.5kg 53.5kg 54.5kg 55.5kg
Total for system 26.0kg 33.0kg 34.5kg 47.5kg 56.0kg 57.5kg 59.5kg 67.2kg 60.0kg 61.5kg 63.5kg 64.5kg 65.5kg
P600
YLM
11.7kg
57.0kg
68.7kg
Total index of the heat source units
Maximum refrigerant charge
Factory charged
Charged on site
Total for system
P700 P800 P850 P900
YSLM YSLM YSLM YSLM
12.0kg 12.0kg 12.0kg 12.0kg
65.5kg 67.5kg 70.0kg 70.0kg
77.5kg
P750
YSLM
12.0kg
67.5kg
79.5kg 79.5kg 82.0kg 82.0kg
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
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