Hitachi RPC-1.5FSR Technical Catalogue page 53

(4) Selecting Matching Indoor Units and Nominal Capacity
Select Ceiling Type Indoor Units (Example)
Item
Selected Model
Nominal Cooling Capacity
Nominal Heating Capacity
(5) Actual Capacity
In the case of the example, the total indoor horsepower is 6HP.
Therefore, the outdoor unit capacity at the nominal temperature selected from the "Capacity Characteristic
Curve" is 16.0kW at the cooling operation, and 20.0kW at the heating operation under nominal conditions.
a) Actual Capacity of Outdoor Unit
Maximum Actual Capacity of Outdoor Unit
= Outdoor Unit Capacity at Nominal Temperature selected from Total Indoor Unit Capacity
5 Correction Factor According to Piping Length and Lift
5 Correction Factor According to Temperature Condition
5 Correction Factor According to Defrosting Operation
Refer to the Correction Factor in Technical Catalog of outdoor unit.
< Example >
Cooling: 16.0kW 5 0.84 5 1.05 = 14.11
Heating: 20.0kW 5 0.95 5 0.87 5 0.85 = 14.05
b) Actual Capacity of Each Indoor Unit
Actual Capacity of Each Indoor Unit
= Actual Capacity of Outdoor Unit
5 (Each Indoor Unit's Horsepower ÷ Summation of Each Indoor Unit Horsepower)
ex.
< RPC-1.5FSR >
Cooling Capacity: 14.11 5 (1.5HP/6.0HP) = 3.53kW
Heating Capacity: 14.05 5 (1.5HP/6.0HP) = 3.51kW
< RPC-2.0FSR >
Cooling Capacity: 14.11 5 (2.0HP/6.0HP) = 4.70kW
Heating Capacity: 14.05 5 (2.0HP/6.0HP) = 4.68kW
< RPC-2.5FSR >
Cooling Capacity: 14.11 5 (2.5HP/6.0HP) = 5.88kW
Heating Capacity: 14.05 5 (2.5HP/6.0HP) = 5.85kW
< Result >
Item
Selected Model
Actual Maximum
Cooling Capacity
Actual Capacity
Actual Maximum
Heating Capacity
Estimated
Cooling Load
Design Load
Estimated
Heating Load
TCI-20007-rev.1
Room (1)
RPC-1.5FSR
kW 4.0
kW 4.8
Room (1)
RPC-1.5FSR
kW 3.53
kW 3.51
kW 2.92
kW 3.29
Room (2) Room (3)
RPC-2.0FSR RPC-2.5FSR
5.0 7.1
5.6 8.0
Room (2) Room (3)
RPC-2.0FSR RPC-2.5FSR
4.70 5.88
4.68 5.85
3.86 4.88
4.34 5.49
SELECTION DATA
(1) + (2) + (3)
-
16.1
18.4
(1)+(2)+(3)
-
14.11
14.05
11.66
13.12
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