Mini Amazon III Series
8
Table 1-5.2: Extract from medium stac pressure duct (T2) cooling capacity table
Model Capacity
index
Indoor air temperature
14°C WB 16°C WB 18°C WB 19°C WB 20°C WB 22°C WB 24°C WB
20°C DB 23°C DB 26°C DB 27°C DB 28°C DB 30°C DB 32°C DB
TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC TC SHC
T2
22 1.5 1.4 1.8 1.5 2.1 1.6 2.2 1.6 2.3 1.7 2.4 1.5 2.4 1.5
28 1.9 1.7 2.3 1.9 2.6 2.1 2.8 2.1 3.0 2.1 3.1 2.0 3.1 1.9
36 2.5 2.1 2.9 2.3 3.4 2.5 3.6 2.6 3.8 2.7 4.2 2.8 3.9 2.3
45 3.1 2.6 3.7 2.8 4.2 3.1 4.5 3.2 4.8 3.2 4.9 3.1 5.1 2.9
56 3.9 3.0 4.6 3.3 5.3 3.6 5.6 3.7 5.9 3.8 6.2 3.7 6.2 3.4
71 4.9 3.9 5.8 4.3 6.7 4.7 7.1 4.9 7.5 4.8 7.8 4.6 7.8 4.3
80 5.5 4.4 6.6 4.9 7.5 5.3 8.0 5.5 8.4 5.5 8.8 5.2 8.8 4.8
90 6.2 5.3 7.3 5.8 8.4 6.3 9.0 6.4 9.6 6.5 9.9 6.1 9.9 5.7
112 7.7 6.4 9.1 7.1 10.5 7.7 11.2 7.8 11.9 8.1 12.5 7.8 12.5 7.4
140 9.7 7.8 11.3 8.6 13.2 9.6 14.0 9.8 14.8 9.8 15.7 9.7 15.4 8.8
Abbreviaons:
TC: Total capacity (kW); SHC: Sensible heat capacity (kW)
Table 1-5.3: Selected indoor units
Room A Room B Room C Room D
Peak heat load (kW) 3.1 2.4 2.4 2.6
Selected indoor unit KPDF-36 DN4.0 KPDF-28 DN4.0 KPDF-28 DN4.0 KPDF-28 DN4.0
Corrected TC (kW) 3.6 2.8 2.8 2.8
Step 3: Select outdoor unit
Determine the required total heat load from the indoor units to the outdoor unit based on either the sum of the
peak loads of each room or the system peak load. In this example, it is determined based on the system peak load.
Therefore, the required heat load is 10.5kW.
Provisionally select an outdoor unit using the sum of the capacity indexes (CIs) of the selected indoor units (as shown
in Table 1-5.4), ensuring that the combinaon rao is between 50% and 130%. Refer to Table 1-5.5. As the sum of CIs
of the indoor units is 120, all outdoor units are potenally suitable except 8kW. Start from the smaller, which is the
10kW unit.
Table 1-5.4: Sum of indoor unit capacity indexes
Model Capacity Index No. of units
KPDF-36 DN4.0 36 1
KPDF-28 DN4.0 28 3
Sum of CIs 120
Table 1-5.5: Combinaons of Indoor and outdoor units
Outdoor unit capacity Sum of capacity indexes
of connected indoor units
(standard indoor units only)
kW Capacity
index
8 80 40 to 104
10 100 50 to 130
12 120 60 to 156
14 140 70 to 182
15.5 160 77.5 to 201.5
