Mitsubishi Electric BDT CITY MULTI, Инструкция по монтажу и предварительной наладке

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3. Piping Design
AN1 2nd
4 - 106
S.D. R2
MEE14K009
Amount of factory charged refrigerant
The above calculation result of the amount of refrigerant to be charged must become below the value in the table below.
*1 Amount of additional refrigerant to be charged on site
Outdoor unit
Model
P250
P300
P400
P450
P350
P200
Charged amount
10.3 kg
11.8 kg
9.5 kg
Limitation of the amount of refrigerant to be charged
Sample calculation
Indoor
Outdoor
A: ø28.58 40m 1: 50 a: ø6.35
B: ø9.52 10m 2: 250 b: ø9.52
C: 3: 15 c: ø6.35 ø12.70 20m
4: 20 d: ø6.35 D:
5: 140 e: ø9.52
ø9.52 5m
6: 200
P700
The total length of each liquid line is as follows:
ø28.58: A = 40 m
ø19.05: F + G = 4 m
ø12.70: C = 20 m
ø9.52: B + D + E + b + e + f = 35 m
ø6.35: a + c + d = 25 m
Therefore,
<Calculation example>
Additional refrigerant charge
= 40 × 0.33 + 4 × 0.14 + 20 × 0.11 + 35 × 0.054 + 25 × 0.021 + 6
+ 2 + 2 + 6
= 34.4 (34.375) kg
f: ø9.52
E: ø9.52 5m
F: ø19.05 3m
10m
5m
5m
10m
5m
5m
G: ø19.05 1m
• 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 (kg)
=
High-pressure pipe
ø28.58 total length
× 0.33 (kg/m)
+
High-pressure pipe
ø22.2 total length
× 0.21 (kg/m)
+
High-pressure pipe
ø19.05 total length
× 0.14 (kg/m)
+
High-pressure pipe
ø15.88 total length
× 0.1 (kg/m)
+
Liquid pipe ø15.88
total length
× 0.18 (kg/m)
+
Liquid pipe ø12.7
total length
× 0.11 (kg/m)
+
Liquid pipe ø9.52
total length
× 0.054 (kg/m)
+
Liquid pipe ø6.35
total length
× 0.021 (kg/m)
+
Total capacity of
outdoor units
Amount
(to be added for standard or
main BC controller)
+
Main BC controller Amount
P200 3.0kg HA-type 2.0kg
P250 4.5kg
P300 4.5kg
P350–900 6.0kg
+
Number of sub BC
controllers
Amount
(to be added for sub
BC controller)
+
Total capacity of connected
indoor units
Amount
(to be added for
indoor unit)
1 1.0kg 80 or below 2.0kg
2 2.0kg 81 to 160 2.5kg
161 to 330 3.0kg
331 to 390 3.5kg
391 to 480 4.5kg
481 to 630 5.0kg
631 to 710 6.0kg
711 to 800 8.0kg
801 to 890 9.0kg
891 to 1070 10.0kg
1071 to 1250 12.0kg
1251 or above 14.0kg
+
Outdoor unit model
Amount
(to be added for
outdoor unit)
Single
P200 to P250YLM 0kg
P300 to P350YLM 0kg
Combination
P400 to P550YSLM 0kg
P600 to P800YSLM 0kg
P850YSLM 5.5kg
P900YSLM 11.0kg
Maximum amount of
refrigerant *1
Outdoor unit model
27.5kg 33.5kg 37.0kg 39.0kg 52.0kg 59.0kg 62.5kg 75.0kg 79.5kg 84.0kg 89.0kg
P200
YLM
P250
YLM
P300
YLM
P350
YLM
P500
YSLM
P550
YSLM
52.0kg 52.0kg
P400
YSLM
P450
YSLM
P600
YSLM
P650
YSLM
P700
YSLM
P850
YSLM
P900
YSLM
79.5kg 79.5kg
P750
YSLM
P800
YSLM
0000003417.BOOK 106 ページ ２０１４年１０月２２日 水曜日 午前１０時３５分
ADDITIONAL REFRIGERANT CALCULATIONS (R2 SERIES) example