Daikin VRV IV REYQ-TAYCA, Design Manual

Page: 51 / 80

49
REYQ-TAYCA EDUS371706C-D
22. Selection Procedure
22.1 Selection Procedure
22.1.1 Flowchart
Provisionally select outdoor unit type and size based on limitation of connection ratio
Correct for cooling & heating capacity of the outdoor unit by the following items
VRV system selection is complete.
Confirm that the number of indoor units connected to the outdoor unit is within limitation.
Corrected capacity of the outdoor unit ≥ Required total heat load to the outdoor unit
2) Use the system peak load 1) Use the sum of the peak load of each room
Define required total heat load to outdoor unit
Indoor unit capacity corrected for indoor air temperature (WB) ≥ Required heat load × Safety factor for the indoor units
Yes
No
-Piping length, level difference
-Piping heat loss
-Safety factor for the outdoor unit
-Defrost (only for heating capacity)
-Outdoor air temperature
-Indoor air temperature
-Connection ratio
Given Conditions:
· Design temperature and humidity (indoor & outdoor)
· Required heat load of each room
· System peak load (if necessary)
· Piping length, level difference
· Specifications of indoor units (type and number)
Define safety factor for the indoor units and outdoor unit
[1] Given conditions
[2] Selection of indoor units
[3] Selection of outdoor unit