Mitsubishi Electric PUHY-P450YKB-A1.TH [34/106] When the piping length from the outdoor unit to the farthest indoor unit is 30 m 100 ft or shorter

Mitsubishi Electric PUHY-P450YKB-A1.TH [34/106] When the piping length from the outdoor unit to the farthest indoor unit is 30 m 100 ft or shorter
GB-32
KD79S703H01
The total length of each liquid piping is as follows:
ø12.7 total length: 40 (A)
ø9.52 total length: 10 (B) + 15 (C) + 10 (D) + 10 (a) + 5 (b) + 10 (e) = 60
ø6.35 total length: 10 (c) + 10 (d) = 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 × 0.11) + (60 × 0.054) + (20 × 0.021) + 0 + 3.5
= 11.6 kg (Fractions are rounded up.)
(2) Units "ft" and "oz"
<Formula>
When the piping length from the outdoor unit to the farthest indoor unit is 30.5 m (100 ft) or shorter
Amount of
additional
charge (oz)
=
ø3/4 total length
× 3.1 (oz/ft)
+
ø5/8 total length
× 2.15 (oz/ft)
+
ø1/2 total length
× 1.29 (oz/ft)
+
ø3/8 total length
× 0.65 (oz/ft)
+
ø1/4 total length
× 0.26 (oz/ft)
+
Outdoor unit
model
Amount (oz)
+
Total capacity of connected
indoor units
Amount (oz)
P200 0 80 or below 71
P250 0 81 to 160 89
P300 0 161 to 330 106
P350 0 331 to 390 124
P400 0 391 to 480 160
P450 0 481 to 630 177
P500 0 631 to 710 212
711 to 800 283
801 to 890 318
891 to 1070 353
1071 to 1250 424
1251 or above 494
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 (oz)
=
ø3/4 total length
× 2.80 (oz/ft)
+
ø5/8 total length
× 1.94 (oz/ft)
+
ø1/2 total length
× 1.19 (oz/ft)
+
ø3/8 total length
× 0.58 (oz/ft)
+
ø1/4 total length
× 0.23 (oz/ft)
+
Outdoor unit
model
Amount (oz)
+
Total capacity of connected
indoor units
Amount (oz)
P200 0 80 or below 71
P250 0 81 to 160 89
P300 0 161 to 330 106
P350 0 331 to 390 124
P400 0 391 to 480 160
P450 0 481 to 630 177
P500 0 631 to 710 212
711 to 800 283
801 to 890 318
891 to 1070 353
1071 to 1250 424
1251 or above 494
<Example>
Outdoor unit model: P300
Total capacity of connected indoor units: 361
* Refer to the pipe connection examples in section 9-4 for the pipes marked with the letters below.
A: ø1/2; 131 ft
B: ø3/8; 32 ft
C: ø3/8; 49 ft
D: ø3/8; 32 ft
a: ø3/8; 32 ft
b: ø3/8; 16 ft
c: ø1/4; 32 ft
d: ø1/4; 32 ft
e: ø3/8; 32 ft

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