Service manual

5-1
PERFORMANCE DATA & PRESSURE CURVES
SM DLF 1-A.1 GB
5. PERFORMANCE DATA & PRESSURE CURVES
5.1 DLF 25 / ONG3-25 DCI
5.1.1 Cooling Capacity (kW)
ID COIL ENTERING AIR DB/WB TEMPERATURE [C0]
OD COIL ENTERING AIR
DB TEMPERATURE [C
O
]
DATA 22/15 24/17 27/19 29/21 32/23
-10 - 20
(protection range)
TC 80 - 110 % of nominal
SC 80 - 105 % of nominal
PI 25 - 50 % of nominal
25
TC 2.42 2.57 2.73 2.89 3.05
SC 2.02 2.06 2.10 2.14 2.18
PI 0.49 0.50 0.51 0.52 0.52
30
TC 2.30 2.46 2.62 2.77 2.93
SC 1.97 2.01 2.05 2.09 2.13
PI 0.54 0.55 0.56 0.57 0.58
35
TC 2.18 2.34 2.50 2.66 2.82
SC 1.92 1.96 2.00 2.04 2.08
PI 0.60 0.61 0.62 0.63 0.64
40
TC 2.07 2.23 2.38 2.54 2.70
SC 1.87 1.91 1.95 1.99 2.03
PI 0.66 0.67 0.68 0.69 0.70
46
TC 1.93 2.09 2.24 2.40 2.56
SC 1.81 1.85 1.89 1.93 1.97
PI 0.73 0.74 0.75 0.75 0.76
LEGEND
TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (
o
C)
DB – Dry Bulb Temp., (
o
C)
ID – Indoor
OD – Outdoor
5.1.2 Capacity Correction Factors (Cooling)
Cooling Capacity Ratio Vs.Outdoor Temperature
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
20 25 30 35 40 45
Outdoor Temperature DB [deg C]
Capacity Factor
CONTENT