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・When the piping length from the outdoor unit to the farthest indoor unit is longer than 30.5 m (100 ft)
Amount of
High-pressure pipe ø28.58
additional charge
=
total length × 0.33 (kg/m)
(kg)
Liquid pipe ø12.7 total
+
length × 0.11 (kg/m)
Main or sub BC controller
+
KA-type
KB-type
* When connecting TPLFYP006/018/036EM14**, add 0.67 kg of refrigerant per indoor unit.
* When connecting TPEFYP006/024/036MA14**, add 0.55 kg of refrigerant per indoor unit.
<Example>
Outdoor unit 1 model: H120
Outdoor unit 2 model: H120
BC controller (Main) model: TCMBM0108JA11N4
BC controller (Sub) model: TCMBS0104KB11N4 × 4 units
Total capacity of connected indoor units: 206
* 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
) + 1 (A
1
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
WT09117X05
High-pressure pipe ø22.2
+
total length × 0.21 (kg/m)
Liquid pipe ø9.52 total
+
length × 0.054 (kg/m)
Amount (kg/unit)
J-type
1.5
JA-type
3.0
4.7
0.4
) = 4
2
= 27.9 kg (Fractions are rounded up.)
High-pressure pipe ø19.05
High-pressure pipe ø15.88
+
+
total length × 0.14 (kg/m)
total length × 0.1 (kg/m)
Liquid pipe ø6.35 total
+
length × 0.021 (kg/m)
Total capacity of connected indoor
units
27 or below
28 to 54
55 to 126
127 to 144
145 to 180
+
181 to 234
235 to 273
274 to 307
308 to 342
343 to 411
412 to 450
451 or above
GB-27
Liquid pipe ø15.88 total
+
length × 0.18 (kg/m)
Amount (kg)
(to be added for indoor unit)
2.0
2.5
3.0
3.5
4.5
5.0
6.0
8.0
9.0
10.0
12.0
14.0
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