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3. MODEL SELECTION AND CAPACITY CALCULATION
3-1. SELECTION PROCEDURE OF INDOOR UNIT AND
OUTDOOR UNIT
Please select indoor units and outdoor unit and make the capacity of each indoor unit be larger
than cooling and heating load.
Calculate the estimated capacity of each indoor units (Refer to 3-2)
Compensation coefficient of pipe length (COOLING)
Compensation coefficient of pipe length and frosting/defrosting (HEATING)
Confirm the design indoor and outdoor temperature condition
Calculate heat load of each room
Select indoor unit to match the heat load for each room preliminarily
● Find indoor unit capacity at design temperature
● Calculate the estimated capacity
Estimated capacity of indoor unit
Calculate the total capacity of indoor units at
● the rated condition
● the design temperature condition
≥ Heat load
YES
A
- (02 - 07) -
Change to a larger
capacity of indoor unit
NO
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