Mitsubishi Electric PURY-P72 Service Handbook page 167

[ 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]
(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
, ' ,
1, 3, 4 1
Amount for the BC
controllers (main/sub)
Outdoor unit total
index
(kg)
1
P72 model 3.0
P96 model
4.5
P120 model
P144 model 6.0
P168 model 7.5
P192 model
9.0
P216 model
P240 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)
HWE0803A
P72
10.5
23-2
) + (0.23 x L
1
+ (0.12 x L ) + (0.06 x L ) + (0.024 x L
6 7
' ) + (2.48 x L
1
+ (1.30 x L ' ) + (0.65 x L ' ) + (0.26 x L
6 7
' , ' : Refer to the table below.
3 4
BC controller (sub)
' (oz)
1
106 Total number of BC
1
159
2
212
265
318
P96 P120
11.8 11.8
26-1 26-1
) + (0.16 x L ) + (0.11 x L
2 3
) + + +
8 1 3 4
' ) + (1.73 x L ' ) + (1.19 x L
2 3
' ) + ' + ' +
8 1 3
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
Total capacity of
connected indoor
(kg) ' (oz)
3 3
1.0 35
2.0 71
127
145
181
235
274
308
343
412
- 158 -
)+ (0.2 x L )
4 5
' )+ (2.16 x L ' )
4 5
'
4
Amount for the Indoor
unit
units
(kg) ' (oz)
4 4
- 27 2.0 71
28 - 54 2.5 89
55 - 126 3.0 106
- 144 3.5 124
- 180 4.5 159
- 234 5.0 177
- 273 6.0 212
- 307 8.0 283
- 342 9.0 318
- 411 10.0 353
- 12.0 424
GB