38
WT09050X01
・
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)
=
High-pressure pipe
ø7/8 total length
× 2.05 (oz/ft)
+
High-pressure pipe
ø3/4 total length
× 1.36 (oz/ft)
+
High-pressure pipe
ø5/8 total length
× 0.97 (oz/ft)
+
Outdoor unit model
Amount (oz)
+
Amount
(oz/HBC controller)
(E)M200
36
99
(E)M250
36
(E)M300
0
(E)M350
0
(E)M400
0
(E)M450
0
(E)M500
0
* Amount of refrigerant to be charged for
single-module units
<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
1
: ø5/8; 59 ft
A
2
: ø5/8; 16 ft
A
3
: ø5/8; 32 ft
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
1
)
ø5/8 total length: 16 (A
2
) + 32 (A
3
) + 26 (B) = 74
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
= 327.1 oz (Fractions are rounded up.)
