Mitsubishi Electric PLA-RP·BA Technical Data Book page 57

8-2. ADJUSTING THE AMOUNT OF REFRIGERANT
• Check additional refrigerant charging amount referring to table 5, 6 when liquid pipe is one size larger than standard diameter.
<Table 5> Required additional charge when the liquid pipe is one size larger than the standard diameter (1:1 SYSTEM)
Liquid pipe dia.
P100 12.7
P125,140 12.7
P200 15.88
P250 15.88
If the calculation produces a negative number ( W
<Table 6> Required additional charge when the liquid pipe is one size larger than the standard diameter
(TWIN/TRIPLE/QUADRUPLE SYSTEM)
Capacity
When the extension pipe length (main piping + branch piping) exceeds 10 m(P100-140)/20m(P200, 250)
P100,125,140
Additional refrigerant amount
P200, 250
Additional refrigerant amount
If the calculation produces a negative number ( W
L1: 15.88 liquid pipe length (m)
L3: 9.52 liquid pipe length (m)
<Table 7> Additional refrigerant charging amount for pipe of standard diameter
Outdoor unit
PUHZ-P100VHA3
PUHZ-P100YHA
PUHZ-P125VHA3
PUHZ-P125YHA
PUHZ-P140VHA3
PUHZ-P140YHA
PUHZ-P200YHA3
PUHZ-P250YHA3
Chargeless Max. pipe length
10m 25m
10m 30m
20m 40m
20m 45m
0), additional charging is not necessary.
W(g) = (100 L2) + (60
W(g) = (180 L1) + (120
0), additional charging is not necessary.
L2: 12.7 liquid pipe length (m)
L4: 6.35 liquid pipe length (m)
Max. Amount of unit
pipe length
filling refrigerant (kg)
50m 3.0kg
50m 4.5kg
50m 4.5kg
70m
5.8kg
70m 7.1kg
57
Refrigerant amount to be added
100 g per 1 m longer than 10 m
100 g per 1 m longer than 10 m
Additional refrigerant amount (Longer than 20 m)
W(g) = 180 pipe length(m) - 3000
L3) + (30 L4) - 2000
L2) + (90 L3) + (30 L4)- 3000
Additional refrigerant charging amount
for pipe length exceeding 30 m (kg)
21 — 30m 31 — 40m 41 — 50m
0.6kg 1.2kg
0.6kg
0.6kg
0.9kg
1.2kg
51 — 60m 61 — 70m
1.8kg
1.2kg
1.2kg
1.8kg
2.7kg 3.6kg
3.6kg 4.8kg
2.4kg