Gree FCU Series, Service Manual

Page: 60 / 79

Design & Selection
58
According to the calculation results, the sum of the on-way resistance and the local resistance is:
The dynamic pressure of the diffuser is:
For FP-102WA, based on the air flow of 1020m3/h and the outlet side of 820mm*130mm, the air
speed at the air outlet is 4.95m/s.
The dynamic pressure is:
The required total external pressure is:
The required external static pressure is:
The designed external static pressure is 12Pa, which is approach to the required external static
pressure 13.2Pa. Therefore, the selection result is satisfactory.
When selecting units, the practice is to match the design sensible heat load with the required
sensible load. In most cases, there is enough latent heat for the coils to meet the design requirement.
(1) Power Lines
Model Power Supply Sectional Area (mm2)
FP-*WA/G-K
FP-*WAH/G-K
FP-*WAS/G-K
FP-*WAHS/G-K
220-240VAC 1Ph 50Hz 1
FP-*WA/G-D
FP-*WAH/G-D
FP-*WAS/G-D
FP-*WAHS/G-D
208-230VAC 1Ph 60Hz 1
FP-*WA/GHL-K
FP-*WAH/GHL-K
FP-*WAS/GHL-K
FP-*WAHS/GHL-K
220-240VAC 1Ph 50Hz 1
Note:
“*” indicates the air flow between 34~204.
Pa P P
J L
11 . 12
 
Pa v P
d
09 . 3 27 . 2 2 . 1
2
1
2
1
2 2
    

Pa v P
dy
24 . 4 66 . 2 2 . 1
2
1
2
1
2 2     

Pa P P P P
d J L YY
24 . 18 ) 09 . 3 11 . 12 ( 2 . 1 ) ( 2 . 1
      
Pa P P P P P
dy d J L JY
2 . 13 ) 24 . 4 09 . 3 11 . 12 ( 2 . 1 ) ( 2 . 1
        