6-9
PRESSURE CURVES
SM YAZDCI 1-A.1 GB
6.3 Calculation
Example
Outdoor Unit
YAZ4 30 DCI
Indoor Combination
CK012+PNX018
Operation Mode
Cooling Mode
Conditions Indoor
22
CDB/15
WB
Conditions Oudoor
30
CDB
Tubing length
20m+10m+5m+25m = 60m
Cooling Pressure calculation:
Pressure [Barg] = Nominal x F
C
x F
T
Unit
Code
Room A – PNX009
1.0
Room B – PNX012
1.5
Room C – CK012
1.5
Room D – PNX018
2.0
ODU Code (Total)
6.0
Nominal Pressure
[Barg]
ODU Code Factor
(F
C
)
Tubing (L) Factor
(F
T
)
Corrected Pressure
[Barg]
Discharge
24.5
1.02
1.005
Pd
= 24.5 x 1.02 x 1.005 =
25.11
Suction
9.0
1.07
0.988
Ps
= 9.0 x 1.07 x 0.988 =
9.51
