Mitsubishi Electric CITY MULTI PUHY-M200-300YNW-A1 Data Book page 70

12. PIPING DESIGN
Example: PUHY-(E)M300YNW-A1
Indoor 1: M100
2: M100
3: M50
4: M40
5: M71
The total length of liquid pipe of each size is as follows:
ø9.52: A + B + C + D + a + b + e = 40 + 10 + 15 + 10 + 10 + 5 + 10 = 100 m
ø6.35: c + d = 10 + 10 = 20 m
A
a
M100
Total length of liquid
Additional
refrigerant charge
=
x 0.050 (kg/m)
(kg) 100 (m) x 0.050 (kg/m)
=
100 x 0.050
= 8.9 (8.88) kg
Amount of factory charged refrigerant
Outdoor unit
Charged amount
model
(E)M200
(E)M250 6.5kg
(E)M300
Maximum refrigerant charge
There is a limit to the amount of refrigerant that can be charged into a unit. Regardless of the amount yielded by the formula above, observe the maximum
refrigerant charge in the table below.
Total index of the outdoor units
Factory charged
Maximum refrigerant charge Charged on site
Total for system
MEES19K116
A: ø9.52 40 m a: ø9.52 10 m
B: ø9.52 10 m b: ø9.52
C: ø9.52 15 m c: ø6.35 10 m
D: ø9.52 d: ø6.35
10 m 10 m
e: ø9.52 10 m
B C
b
M100
Total length of liquid
+ + 0
x 0.019 (kg/m)
20 (m) x 0.019 (kg/m)
+ 20 x 0.019 + 0
(E)M200 (E)M250 (E)M300
YNW-A1 YNW-A1 YNW-A1
kg 6.5 6.5 6.5
kg 18.0 18.5 19.5
kg 24.5 25.0 26.0
5 m
D
c d
M50 M40
+ 3.5
+ 3.5
Y-Series
e
M71
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