Amount Of Refrigerant To Be Added; Calculation Formula - Mitsubishi Electric PURY-(E)P200 Service Handbook

[ VIII Test Run Mode ]

3. Amount of refrigerant to be added

The amount of refrigerant that is shown in the table below is factory-charged to the outdoor units.
The amount necessary for extended pipe (field piping) is not included and must be added on site.
Outdoor unit model
Amount of pre-charged refrigerant
in the outdoor unit (kg)
Amount of pre-charged refrigerant
in the outdoor unit [lbs-oz]
Outdoor unit model
Amount of pre-charged refrigerant
in the outdoor unit (kg)
Amount of pre-charged refrigerant
in the outdoor unit [lbs-oz]

(1) Calculation formula

The amount of refrigerant to be added depends on the size and the length of field piping. (unit in m[ft])
Amount of added refrigerant (kg) = (0.36 x L
Amount of added refrigerant (oz) = (3.88 x L
L : Length of ø28.58[1-1/8"] high pressure pipe (m)
1
L : Length of ø22.2[7/8"] high pressure pipe (m)
2
L : Length of ø19.05[3/4"] high pressure pipe (m)
3
L : Length of ø15.88[5/8"] high pressure pipeŠ (m)
4
L : Length of ø15.88[5/8"] liquid pipe (m)
5
L : Length of ø12.7[1/2"] liquid pipe (m)
6
L : Length of ø9.52[3/8"] liquid pipe (m)
7
L : Length of ø6.35[1/4"] liquid pipe (m)
8
, α
α α α α
1, 2, 3, 4
below.
Amount for the BC
controllers (main/sub)
Outdoor unit total
index
α
(kg)
1
(E)P200 model 2.0
P250 model
3.0
(E)P300 model
P350 model
4.5
(E)P400 model
(E)P450 model 5.0
(E)P500 model
6.0
(E)P550 model
(E)P600 model
P650 model
7.5
P700 model
P750 model
9.0
P800 model
Round up the calculation result to the nearest 0.1kg. (Example: 18.04kg to 18.1kg)
Round up the calculation result in increments of 4oz (0.1kg) or round it up to the nearest 1oz. (Example: 78.21oz to 79oz)
HWE07130
P200
8.0
17-10
EP200
10.5
23-2
) + (0.23 x L
1
+ (0.12 x L ) + (0.06 x L
6
' ) + (2.48 x L
1
+ (1.30 x L ' ) + (0.65 x L
6
' , α ' , α ' , α ' : Refer to the table
1 2 3 4
α
' (oz) HA-type
1
71 1 unit
106
159
177 Total number of BC
1
212
2
265
318
P250 P300
10.5 10.5
23-2 23-2
EP300
13.0
28-11
) + (0.16 x L ) + (0.11 x L
2 3
) + (0.024 x L ) + α + α
7 8 1
' ) + (1.73 x L
2 3
' ) + (0.26 x L ' ) + α ' + α
7 8 1
L ' : Length of ø28.58[1-1/8"] high pressure pipe [ft]
1
L ' : Length of ø22.2[7/8"] high pressure pipe [ft]
2
L ' : Length of ø19.05[3/4"] high pressure pipe [ft]
3
L ' : Length of ø15.88[5/8"] high pressure pipe [ft]
4
L ' : Length of ø15.88[5/8"] liquid pipe [ft]
5
L ' : Length of ø12.7[1/2"] liquid pipe [ft]
6
L ' : Length of ø9.52[3/8"] liquid pipe [ft]
7
L ' : Length of ø6.35[1/4"] liquid pipe [ft]
8
BC controller (main)
α α
(kg) ' (oz)
2 2
2.0 71
BC controller (sub)
α α
(kg) ' (oz)
3 3
1.0 35
2.0 71
- 148 -
P350
13.0
28-11
)+ (0.2 x L )
4 5
+ α + α
2 3 4
' ) + (1.19 x L ' )+ (2.16 x L
4
' + α ' + α '
2 3 4
Amount for the Indoor
Total capacity of
connected indoor
units
- 80
81 - 160
161 - 330
331 - 390
391 - 480
481 - 630
631 - 710
711 - 800
801 - 890
891 - 1070
1071 - 1250
1251 -
P400
13.0
28-11
' )
5
unit
α α
(kg) ' (oz)
4 4
2.0 71
2.5 89
3.0 106
3.5 124
4.5 159
5.0 177
6.0 212
8.0 283
9.0 318
10.0 353
12.0 424
14.0 494
GB