Mitsubishi Electric PURY-EP200YLM-A, Руководство по обслуживанию, Страница: 192 / 434

[6-9 Evaluating and Adjusting Refrigerant Charge ]
- 181 -
HWE1314A GB
6
T
est
Ru
n
(1) Calculation formula
The amount of refrigerant to be added depends on the size and the length of field piping. (unit in m[ft])

When the piping length to the farthest indoor unit is shorter than 30.5 meters (100 feet)

When the piping length to the farthest indoor unit is 30.5 meters (100 feet) or longer
Amount of added refrigerant (kg) = (0.36 x L
1
) + (0.23 x L
2
) + (0.16 x L
3
) + (0.11 x L
4
)+ (0.2 x L
5
)
+ (0.12 x L
6
) + (0.06 x L
7
) + (0.024 x L
8
) +
α
1
+
α
2
+
α
3
+
α
4
Amount of added refrigerant (oz) = (3.88 x L
1
' ) + (2.48 x L
2
' ) + (1.73 x L
3
' ) + (1.19 x L
4
' )+ (2.16 x L
5
' )
+ (1.30 x L
6
' ) + (0.65 x L
7
' ) + (0.26 x L
8
' ) +
α
1
' +
α
2
' +
α
3
' +
α
4
'
Amount of added refrigerant (kg) = (0.33 x L
1
) + (0.21 x L
2
) + (0.14 x L
3
) + (0.1 x L
4
)+ (0.18 x L
5
)
+ (0.11 x L
6
) + (0.054 x L
7
) + (0.021 x L
8
) +
α
1
+
α
2
+
α
3
+
α
4
Amount of added refrigerant (oz) = (3.54 x L
1
' ) + (2.26 x L
2
' ) + (1.51 x L
3
' ) + (1.08 x L
4
' )+ (1.94 x L
5
' )
+ (1.19 x L
6
' ) + (0.59 x L
7
' ) + (0.23 x L
8
' ) +
α
1
' +
α
2
' +
α
3
' +
α
4
'
L
1
: Length of ø28.58[1-1/8"] high pressure pipe (m)
L
2
: Length of ø22.2[7/8"] high pressure pipe (m)
L
3
: Length of ø19.05[3/4"] high pressure pipe (m)
L
4
: Length of ø15.88[5/8"] high pressure pipe (m)
L
5
: Length of ø15.88[5/8"] liquid pipe (m)
L
6
: Length of ø12.7[1/2"] liquid pipe (m)
L
7
: Length of ø9.52[3/8"] liquid pipe (m)
L
8
: Length of ø6.35[1/4"] liquid pipe (m)
α
1
, α
2
, α
3
, α
4
, α
1
' , α
2
' , α
3
' , α
4
' : Refer to the table below.
L
1
' : Length of ø28.58[1-1/8"] high pressure pipe [ft]
L
2
' : Length of ø22.2[7/8"] high pressure pipe [ft]
L
3
' : Length of ø19.05[3/4"] high pressure pipe [ft]
L
4
' : Length of ø15.88[5/8"] high pressure pipe [ft]
L
5
' : Length of ø15.88[5/8"] liquid pipe [ft]
L
6
' : Length of ø12.7[1/2"] liquid pipe [ft]
L
7
' : Length of ø9.52[3/8"] liquid pipe [ft]
L
8
' : Length of ø6.35[1/4"] liquid pipe [ft]
β, β' : Refer to the table below.
Outdoor unit
model
Amount for the BC con-
trollers (standard/main)
BC controller (main)
Total capacity of con-
nected indoor units
Amount for the Indoor
unit
α
1
(kg) α
1
' (oz) α
4
(kg) α
4
' (oz)
(E)P200 model 3.0 106 HA1 type α
2
(kg) α
2
' (oz) - 80 2.0 71
(E)P250 model
4.5 160
1 2.0 71 81 - 160 2.5 89
(E)P300 model 161 - 330 3.0 106
(E)P350 model
6.0 212
BC controller (sub)
331 - 390 3.5 124
(E)P400 model 391 - 480 4.5 159
(E)P450 model Total number of BC α
3
(kg) α
3
' (oz) 481 - 630 5.0 177
(E)P500 model 1 1.0 35 631 - 710 6.0 212
(E)P550 model 2 2.0 71 711 - 800 8.0 283
(E)P600 model 801 - 890 9.0 318
(E)P650 model 891 - 1070 10.0 353
(E)P700 model 1071 - 1250 12.0 424
(E)P750 model 1251 - 14.0 494
(E)P800 model
(E)P850 model
(E)P900 model