Mitsubishi Electric PQHRY-P250YHM-A, Справочник данных

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(16)-6 Refrigerant charging calculation
Sample connection (with 3 BC controller and 6 indoor units)
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 refriger
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.
ant 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 Sample calculation
Indoor
A : ø28.58 40m 1 : P50 a : ø6.35 5m
B : ø9.52 10m 2 : P250 b : ø9.52 3m
C : 3 : P15 c : ø6.35 2m ø12.70 10m
4 : P20 d : ø6.35 3m
D :
5 : P140 e : ø9.52 3m
ø9.52 5m
6 : P200 f : ø9.52 10m
E : ø9.52 5m
F : ø22.20 2m
G : ø22.20 1m
Total length for each pipe size : ø28.58 A = 40m
ø22.20 F+G = 2+1 = 3m
ø12.70 C = 10m
ø9.52 B+D+E+b+e+f = 36m
ø6.35 a+c+d =10m
Therefore, additional refrigerant charge = 40x0.36 + 3x0.23 + 10x0.12 + 36x0.06 + 10x0.024 + 3.0 + 2.0 + 6.0
= 29.69kg
= 29.7kg
BC controller (Main BC)
IU
a
IU
C
b
IU
1 : P50
2 : P250
CMY-R160-J1
(Joint)
IU
CMY-Y102S-G
(Joint)
BC controller (Sub BC)
BC controller (Sub BC)
B
c d
IU
f
D
E
CMY-Y202-G2
CMY-Y102L-G2
CMY-Y102S-G2
(Joint)
A
IU
e
F
H
Heat source unit Twinning kit (High/Low press.)
CMY-Q100VBK:
The Low press. kit is set in the Main unit ;
The High press. kit is to be installed in the field.
HU
(Main unit)
HU
(Sub unit)
Reducer (P15-P50)
(attached with BC controller)
G
3 : P15 4 : P20
5 : P140
6 : P200
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)
+
BC controller
(Standard / Main)
3.0 kg
5.0 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 -
9.0 kg
10.0 kg
Outdoor unit
Model
P200
P250
P300
Charged amount
Limitation of the amount of refrigerant to be charged
Heat source unit model P200 P250 P300 P400 P450 P500 P550 P600
34.3 43.3 44.3 58.5 65.5 79.2 67.2 70.9 Maximum amount of refrigerant *1 kg