Mitsubishi Electric City Multi R2 Series Installation Manual page 41

<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: ø1-1/8; 131 ft
B: ø3/8; 32 ft
C: ø3/8; 16 ft
D: ø3/8; 16 ft
E: ø3/8; 16 ft
F: ø3/8; 16 ft
G: ø3/8; 16 ft
H: ø3/8; 16 ft
I: ø3/8; 16 ft
A : ø3/4; 9 ft
1
A : ø3/4; 3 ft
2
a: ø3/8; 32 ft
b: ø3/8; 16 ft
c: ø1/4; 16 ft
d: ø1/4; 32 ft
e: ø1/4; 16 ft
f: ø3/8; 16 ft
g: ø3/8; 16 ft
h: ø3/8; 16 ft
The total length of the high-pressure piping and liquid piping in each case is as follows:
ø1-1/8 total length: 131 (A)
ø3/4 total length: 9 (A
ø3/8 total length: 32 (B) + 16 (C) + 16 (D) + 16 (E) + 16 (F) + 16 (G) + 16 (H) + 16 (I) + 32 (a) + 16 (b) + 16 (f)
+ 16 (g) + 16 (h) = 240
ø1/4 total length: 16 (c) + 32 (d) + 16 (e) = 64
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 = (131 × 3.54) + (12 × 1.51) + (240 × 0.59) + (64 × 0.23) + 106 + (15 × 4) + 177
WT08432X01
) + 3 (A ) = 12
1 2
= 981.2 oz (Fractions are rounded up.)
GB-39