Fujitsu AIRSTAGE J-IIIL - Page 33

Calculation method of outdoor unit capacity from capacity tables
(X, Y)
(X, Y)
(X, Y)
x
y
Capacity ratio of indoor units to outdoor unit, X (%)
Capacity of outdoor unit, Y (kBtu/h)
Equation for outdoor unit capacity calculation: Y = (Y
2
- Y
1
)/(X
2
- X
1
) × (X - X
1
) + Y
1
NOTE: Refer to "Cooling capacity table (Outdoor unit)
" on page 02-54 to find values of Y
1
and Y
2
using values of X
1
and X
2
.
• Calculation example of 8 Ton outdoor units: AOU96RLAVL
115 61.2 6.51 78.3 8.35 79.2 8.35 82.8 8.35 83.7 8.35
Cooling capacity at rated condition: 96 kBtu/h (8 ton)
Total rated
capacity of
indoor unit
Outdoor
temperature
Indoor temperature
68°FDB/59°FWB
80°FDB/67°FWB 82°FDB/68°FWB 86°FDB/72°FWB 90°FDB/73°FWB
°FDB TC IP TC IP TC IP TC IP TC IP
105.6 (110%)
5
67.3 3.88 105.6 5.57 110.4 5.79 129.6 6.63 134.4 6.84
95 67.3 5.21 105.6 8.98 110.4 9.67 117.1 10.11 118.2 10.11
115 67.3 7.36 79.8 8.35 80.7 8.35 84.4 8.35 85.3 8.35
96.0 (100%)
5 61.2 3.61 96.0 5.15 100.4 5.34 117.8 6.11 122.2 6.31
95 61.2 4.82 96.0 7.74 100.4 8.29 114.5 10.11 115.6 10.11
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Capacity ratio of indoor units to outdoor unit (%)
X
1
= 100
X = 102.1
X
2
= 110
Capacity of outdoor units (kBtu/h)
Y
1
= 100.4
Y
Y
2
= 110.4
Y = (110.4 - 100.4)/(110 - 100) × (102.1 - 100) + 100.4 = 102.5 kBtu/h
1-3. Capacity calculation method - (02-11) - 1. Model selection and capacity calculation
MODEL SELECTION MODEL SELECTION