4 - 47
S.D. Y
MEE15K022
3. Piping Design
YKB/YLM 2nd
A
B
C
D
e
a
b
c
d
Example: PUHY-EP400YLM-A1
P40
P100
P125
P32
P63
=
+
+
+
+
+
+
+
+
+ 2.0 + 3.5
+ 2.0 + 3.5
(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
= 14.5 (14.45) 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)
m [kg]
m [kg]
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.
Amount of factory charged refrigerant
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
7.5kg
11.8kg
EP200
EP250
EP300
EP350
EP400
EP450
EP500
Outdoor unit
model
Charged amount
10.3kg
T
otal index of the outdoor units
EP200
EP250
EP300
EP350
EP400
EP450
EP500
YLM-A1
YLM-A1
YLM-A1
YLM-A1
YLM-A1
YLM-A1
YLM-A1
Maximum refrigerant charge
Factory charged
kg
7.5
7.5
10.3
10.3
11.8
11.8
11.8
Charged on site
kg
14.8
22.2
22.4
23.3
25.4
33.2
34.1
Total for system
kg
22.3
29.7
32.7
33.6
37.2
45.0
45.9
EP550
EP600
EP650
EP700
YSLM-A1
YSLM-A1
YSLM-A1
YSLM-A1
17.8
20.6
22.5
25.3
33.5
33.3
34.0
43.6
51.3
53.9
56.5
68.9
T
otal index of the outdoor units
Maximum refrigerant charge
Factory charged
kg
Charged on site
kg
Total for system
kg
EP750
EP800
EP850
YSLM-A1
YSLM-A1
YSLM-A1
25.3
28.1
28.1
43.6
43.3
45.1
68.9
71.4
73.2
EP1100
EP1200
EP1250
EP1300
EP1350
YSLM-A1
EP1050
YSLM-A1
EP1000
YSLM-A1
EP950
YSLM-A1
YSLM-A1
YSLM-A1
YSLM-A1
YSLM-A1
30.9
32.4
44.8
48.3
75.7
80.7
32.4
48.3
80.7
32.4
48.3
80.7
32.4
48.3
80.7
33.9
49.9
83.8
33.9
49.9
83.8
35.4
51.6
87.0
35.4
51.6
87.0
EP1150
YSLM-A1
EP900
YSLM-A1
30.9
44.8
75.7
