Mitsubishi Electric City Multi R2 Series Installation Manual page 39

<Example>
Outdoor unit 1 model: PURY-EP300YNW-A
Outdoor unit 2 model: PURY-EP300YNW-A
BC controller (Main) model: CMB-P108V-JA
BC controller (Sub) model: CMB-P104V-KB × 4 units
Total capacity of connected indoor units: 530
* Refer to the pipe connection examples in section 9-4 for the pipes marked with the letters below.
A: ø28.58; 40 m
B: ø9.52; 10 m
C: ø9.52; 5 m
D: ø9.52; 5 m
E: ø9.52; 5 m
F: ø9.52; 5 m
G: ø9.52; 5 m
H: ø9.52; 5 m
I: ø9.52; 5 m
A : ø19.05; 3 m
1
A : ø19.05; 1 m
2
a: ø9.52; 10 m
b: ø9.52; 5 m
c: ø6.35; 5 m
d: ø6.35; 10 m
e: ø6.35; 5 m
f: ø9.52; 5 m
g: ø9.52; 5 m
h: ø9.52; 5 m
The total length of the high-pressure piping and liquid piping in each case is as follows:
ø28.58 total length: 40 (A)
ø19.05 total length: 3 (A
ø9.52 total length: 10 (B) + 5 (C) + 5 (D) + 5 (E) + 5 (F) + 5 (G) + 5 (H) + 5 (I) + 10 (a) + 5 (b) + 5 (f) + 5 (g)
+ 5 (h) = 75
ø6.35 total length: 5 (c) + 10 (d) + 5 (e) = 20
Therefore, when the piping length from the outdoor unit to the farthest indoor unit is longer than 30.5 m (100 ft),
Amount of additional charge = (40 × 0.33) + (4 × 0.14) + (75 × 0.054) + (20 × 0.021) + 3.0 + (0.4 × 4) + 5
WT08432X01
) + 1 (A ) = 4
1 2
= 27.9 kg (Fractions are rounded up.)
GB-37