Daikin REYQ38M7W1B [5/32] Selection procedure vrvii system based on cooling load

• Selection procedure

• Systems • Selection procedure

4

1 Selection procedure VRVII system based on cooling load

1-4 Selection example based on cooling load

4 Actual performance data (50Hz)

• Outdoor unit cooling capacity: 30.5kW (RXYQ10M, 110 %)

• Individual capacity

Capacity of FXYCP25K = 30.5 x

= 2.77kW

Actual combination capacity

The unit size for room A has to be increased from 25 to 32 because the capacity is less than the load. For new combination, actual capacity is calculated

as follows.

• Indoor unit combination total capacity index

(25 x 2) +31.25 + (40 x5) = 281.25 (112.5 %)

• Outdoor unit cooling capacity:

27,610 kcal/h (direct interpolation between 110 % and 120 % in the table)

• Individual capacity

Capacity of FXCQ25M = 30.0 x

25

= 2.7kW

281.25

Actual capacity of new combination

Then, the capacities have to be corrected for actual piping length according to the location of indoor and outdoor units and the distance between them.