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TECHNICAL DATA FOR REPAIR
※ Additional refilling amount of the refrigerant when repairing the refrigerant system
(Calcuate using theformula indicated below)
NOTE) When more than one indoor unit is connected, add 2.2 lbs (1 kg) more refrigerant to the above-mentioned
formula.
[When more than one indoor unit is connected]
Compressor heaters 1, 2 registance value 1.67 kΩ ± 7 %
Refrigerant oil
Type NL10
Standard amount 1.06 gal (4 L)
Refilling of refrigerant
oil at the time of instal-
lation is not necessary.
Additional refilling
amount of the
refrigerant oil when
repairing the
refrigerant system
When doing refrigerant pump down 0 gal (0 cm
3
)
When replacing the
parts that do not
contain the refrigerant
oil inside such as
discharge pipes,
expansion valves, or
dryer filters.
When recovering refrigerant 0.11 gal (400 cm
3
)
When recovering refrigerant vapor 0.11 gal (400 cm
3
)
When the compressor
(including dryer filter) is
replaced, you must
supply refrigerant oil
into the compressor
unit separately.
(For details, refer to
P116 and after)
When accumulator is replaced 0.26 gal (1,000 cm
3
)
If the other parts are
replaced together,
total of refilling amount
required for each
replaced part must be
added.
When oil separator is replaced 0.53 gal (2,000 cm
3
)
When other part is replaced
(except compressor)
Measured value
Refrigerant gas
Type R410A
Standard
amount
8 TON 25.4 lbs (11.5 L)
15 TON 37.5 lbs (17.0 L)
Additional refilling amount of the refrigerant when repairing
the refrigerant system
※1
Item Standard value Remark
Refilling amount (lbs)
= (l
1
x 0.237) + (l
2
x 0.168) + (l
3
x 0.114) + (l
4
x 0.074) + (l
5
x 0.036) + (l
6
x 0.015)
Refilling amount (kg)
= (l
1
x 0.353) + (l
2
x 0.250) + (l
3
x 0.170) + (l
4
x 0.110) + (l
5
x 0.054) + (l
6
x 0.022)
l
1
=Liquid piping Φ7/8 inch total length (ft)
l
2
=Liquid piping Φ3/4inch total length (ft)
l
3
=Liquid piping Φ5/8 inch total length (ft)
l
4
=Liquid piping Φ1/2 inch total length (ft)
l
5
=Liquid piping Φ3/8 inch total length (ft)
l
6
=Liquid piping Φ1/4 inch total length (ft)
l
1
=Liquid piping Ф22.22 mm total length (m)
l
2
=Liquid piping Ф19.05 mm total length (m)
l
3
=Liquid piping Ф15.88 mm total length (m)
l
4
=Liquid piping Ф12.70 mm total length (m)
l
5
=Liquid piping Ф9.52 mm total length (m)
l
6
=Liquid piping Ф6.35 mm total length (m)
Refilling amount (lbs)
= (l
1
x 0.237) + (l
2
x 0.168) + (l
3
x 0.114) + (l
4
x 0.074) + (l
5
x 0.036) + (l
6
x 0.015) + 2.2
Refilling amount (kg)
= (l
1
x 0.353) + (l
2
x 0.250) + (l
3
x 0.170) + (l
4
x 0.110) + (l
5
x 0.054) + (l
6
x 0.022) + 1.0
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