Fujitsu AIRSTAGE J-III L AJ 072LELAH Series Design & Technical Manual page 30


System capacity = Total capacity of
indoor units at design temperature
Actual capacity of indoor unit =
Capacity of indoor unit at design
temperature
Select outdoor unit to match the total capacity of indoor units preliminarily
(Confirm the rated capacity ratio of indoor and outdoor unit, the number of
connectable indoor units within limit)
Confirm if the capacity of outdoor unit.
Calculate the compensated capacity of outdoor unit (Refer to 3-2)
● Find outdoor unit capacity at design temperature
● Calculate the compensated capacity
Compensation coefficient of pipe length (COOLING)
Compensation coefficient of pipe length and frosting/defrosting (HEATING)
NO
Total capacity of indoor units at design
temperature ≥ Compensated capacity of
System capacity = Compensated capacity of outdoor unit
Calculate actual capacity of each indoor unit by dividing
system capacity proportionally (Refer to 3-2)
Actual capacity of indoor unit ≥ Heat load
A
outdoor unit
≥
 
YES
YES
END
- (02 - 08) -
Change to a larger
capacity of outdoor unit
NO