Mitsubishi CITY MULTI PURY-EM-YNW-A1(-BS) Series Installation Manual page 40

・When the piping length from the outdoor unit to the farthest HBC controller is longer than 10 m (32 ft)
Amount of additional
charge (oz)
<Example>
Outdoor unit model: PURY-EM300YNW-A1
Main HBC controller 1 model: CMB-WM108V-AA
Main HBC controller 2 model: CMB-WM108V-AA
Sub HBC controller model: CMB-WM108V-AB
* Refer to the pipe connection examples in section 9-4 for the pipes marked with the letters below.
A : ø5/8; 59 ft
1
A : ø5/8; 16 ft
2
A : ø5/8; 32 ft
3
B: ø5/8; 26 ft
The total length of the high-pressure piping and liquid piping in each case is as follows:
ø5/8 total length: 59 (A
ø5/8 total length: 16 (A
Therefore, when the piping length from the outdoor unit to the farthest HBC controller is longer than 10 m (32 ft),
Amount of additional charge = (133 × 0.57) + 99 × 2
WT09050X01
High-pressure pipe
= ø7/8 total length +
× 2.05 (oz/ft)
Outdoor unit model Amount (oz)
(E)M200
(E)M250
(E)M300
+
(E)M350
(E)M400
(E)M450
(E)M500
* Amount of refrigerant to be charged for
single-module units
)
1
) + 32 (A ) + 26 (B) = 74
2 3
= 327.1 oz (Fractions are rounded up.)
High-pressure pipe High-pressure pipe
ø3/4 total length + ø5/8 total length
× 1.36 (oz/ft) × 0.97 (oz/ft)
Amount
(oz/HBC controller)
+
36 99
36
0
0
0
0
0
38