Fujitsu AOU48RLXFZ - 3. Model Selection and Capacity Calculation

2. MODEL SELECTION
MODEL SELECTION AND CAPACITY CALCULATION3.
SELECTION PROCEDURE OF INDOOR UNIT AND 3-1.
OUTDOOR UNIT
Please select indoor units and outdoor units and make the capacity of each indoor unit be
larger than cooling and heating load.
1
Calculate heat load of each room
2
Tentative selection of indoor units
4
Tentative selection of outdoor unit
6
Actual cooling capacity or heating capacity of system
(Smaller one of
3
and
5
)
8
Check the heat load and capacity of indoor unit of each rooms
(Are you satisfied
7
≥
1
?)
Note: Outdoor unit is added and calculated again to lower the total
rated capacity of indoor unit in case of capacity shortage.
3
Calculate the total cooling capacity or heating capacity of indoor units
7
Calculate the cooling capacity or heating capacity of each indoor unit
5
Calculate the Maximum cooling capacity or heating capacity of outdoor unit
The total cooling capacity or heating capacity of indoor units
= The sum of capacity of indoor units
x Capacity change rate by suction temperature of indoor unit
: Calculate by the value of the outdoor temperature 95°F when
cooling, 47°F when heating.
The cooling capacity or heating capacity of each indoor unit
= Rated capacity of each indoor unit
x
6
System capacity / The sum of rated capacity of indoor units
The maximum cooling capacity or heating capacity of outdoor unit
= Capacity of outdoor unit calculated from total of indoor unit rated capacity with capacity table
x Capacity change rate by temperature conditions (Calculate by the value of indoor units
connecting capacity in 100%)
x Capacity change rate by indoor units connecting capacity : Calculate by the value of standard
temperature conditions (When indoor units connecting capacity is only 100% or more)
x Capacity change rate by refrigerant pipe length
x Capacity change rate by frosting (Only heating operation)
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MODEL SELECTION MODEL SELECTION