67
8-1-2. ADJUSTING THE AMOUNT OF REFRIGERANT
•
Check additional refrigerant charging amount referring to table 5, 6 when liquid pipe is 1 size larger than standard diameter.
:
9.52
:
12.7
:
12.7
PUHZ-RP35,50
PUHZ-RP60,71
PUHZ-RP100~140
Liquid pipe O.D.
60 g per 1 m
100 g per 1 m
100 g per 1 m
Refrigerant amount to be added
<Table 6> Required additional charge when the pipe size is 1 size larger than the standard diameter (TWIN/TRIPLE SYSTEM)
<Table 5> Required additional charge when the pipe size is 1 size larger than the standard diameter (1:1 SYSTEM)
Outdoor unit
PUHZ-RP71~140
When the extension pipe length (main branch piping) exceeds 20 m
Additional refrigerant amount W(g) = (100
%
L1) + (60
%
L2) + (30
%
L3) - 2000
If the calculation produces a negative number ( W
0), additional charging is not necessary.
L1:
:
12.7 liquid pipe length (m)
L2:
:
9.52 liquid pipe length (m)
L3:
:
6.35 liquid pipe length (m)
Outdoor unit
2.5kg
3.5kg
5.0kg
31 – 40m
0.2kg
0.6kg
0.6kg
41 – 50m
0.4kg
1.2kg
1.2kg
51 – 60m
1.8kg
61 – 70m
71 – 75m
2.4kg
<Table 7> Additional refrigerant charging amount for pipe of standard diameter
Outdoor unit
Type
Type
Permitted
pipe length
Additional refrigerant charging amount
for pipe length exceeding 30 m (kg)
Amount of unit
filling refrigerant (kg)
PUHZ-RP35,50
PUHZ-RP71
PUHZ-RP100~140
1 : 1
system
50m or less
75m or less
3.5kg
5.0kg
31 – 40m
0.6kg
0.6kg
41 – 50m
1.2kg
1.2kg
51 – 60m
1.8kg
61– 70m
71 – 75m
2.4kg
Outdoor unit
Permitted
pipe length
Additional refrigerant charging amount
for pipe length exceeding 30 m (kg)
Amount of unit
filling refrigerant (kg)
PUHZ-RP71
PUHZ-RP100~140
Twin Triple
system
50m or less
75m or less
