Mitsubishi PWFY-P100VM-E-BU, Справочник данных

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(4) Refrigerant charging calculation (R2 system)
Sample connection (with 3 BC controller and 6 indoor units) (PURY-P700YSJM-A)
Amount of additional refrigerant to be charged
Refrigerant for extended pipes (field piping) is not factory-charged to the outdoor unit. Add an appropriate amount of refrigerant for each pipes on site.
Record the size of each high pressure pipe and liquid pipe, and the amout of refrigerant that was charged on the outdoor unit for future reference.
Calculating the amount of additional refrigerant to be charged
The amount of refrigerant to be charged is calculated with the size of the on-site-installed hige pressure pipes and liquid pipes, and their length.
Calculate the amount of refrigerant to be charged according to the formula below.
Round up the calculation result to the nearest 0.1kg. (i.e., 16.08 kg = 16.1 kg)
<Amount of additional refrigerant to be charged>
Calculating the amount of additional refrigerant to be charged
Amount of factory charged refrigerant
Outdoor unit model P200
24.8kg
27.3kg
33.8kg 34.8kg 39.7kg 46.7kg 53.7kg 60.2kg 69.2kg 72.9kg 74.6kg 90.3kg
34.0kg 35.0kg 39.7kg 47.5kg 49.2kg 62.9kg 69.6kg 73.3kg 74.8kg 74.8kg
91.5kg 91.5kg 91.5kg 91.5kg
P250 P300 P350 P400 P450 P500 P550 P600 P650 P700
EP200 EP250 EP300 EP350 EP400 EP450 EP500 EP550 EP600 EP650 EP700
P750 P800 P850 P900
Maximum amount of
refrigerant *1
Maximum amount of
refrigerant *1
Outdoor unit model
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
Additional refrigerant
charge
(kg)
=
High pressure
pipe size
Total length of ø 28.58
x 0.36
(m) x 0.36(kg/m)
+
High pressure
pipe size
Total length of ø 22.20
x 0.23
(m) x 0.23(kg/m)
+
High pressure
pipe size
Total length of ø 19.05
x 0.16
(m) x 0.16(kg/m)
+
High pressure
pipe size
Total length of ø 15.88
x 0.11
(m) x 0.11(kg/m)
+
Liquid pipe size
Total length of ø 15.88
x 0.2
(m) x 0.20(kg/m)
+
Liquid pipe size
Total length of ø 12.7
x 0.12
(m) x 0.12(kg/m)
+
Liquid pipe size
Total length of ø 9.52
x 0.06
(m) x 0.06(kg/m)
+
Liquid pipe size
Total length of ø 6.35
x 0.024
(m) x 0.024(kg/m)
+
Total outdoor unit
Model
(E)P200
(E)P250 - (E)P500
(E)P550 - P900
Charged amount per
BC controller
(Standard / Main)
2.0 kg
3.0 kg
5.0 kg
+
Charged amount per
BC controller
(Main) HA-type
2.0 kg
+
BC controller
(Sub) Total units
1 unit
2 units
Charged amount Charged amount
1.0 kg
2.0 kg
+
Total capacity
of connected
indoor units
-80
81 - 160
2.0 kg
2.5 kg
161 - 330
331 - 390 3.0 kg
3.5 kg
391 - 480
481 - 630 4.5 kg
5.0 kg
631 - 710
711 - 800 6.0 kg
8.0 kg
801 - 890
891 - 1070
9.0 kg
10.0 kg
1071 - 1250
1251 -
12.0 kg
14.0 kg
Outdoor unit
Model
P200
EP200
P250
P300
EP300
EP350
P350
P400
EP250
P450
Charged amount
9.5 kg
11.8 kg
Limitation of the amount of refrigerant to be charged
BC controller (Main BC)
IU
a
IU
C
b
IU
1 : P50
2 : P250
IU
BC controller (Sub BC)
BC controller (Sub BC)
B
c d
IU
f
D
E
Joint
Joint kit
Joint
A
IU
e
F
H
OU
(Main unit)
OU
(Sub unit)
Reducer (P15-P50)
(attached with BC controller)
G
3 : P15 4 : P20
5 : P140
6 : P200
Outdoor Twinning kit
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
ø22.2: F = 3 m
ø19.05: G = 1 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 × 0.36 + 3 × 0.23 + 1 × 0.16 + 20 × 0.12 + 30 × 0.06 + 25 × 0.024 + 5
+ 2 + 2 + 6
= 35.4 kg
f: ø9.52
E: ø9.52 5m
F: ø22.2 3m
10m
5m
5m
10m
5m
5m
G: ø19.05 1m