Airwell YBZ214, Service Manual

Page: 23 / 76

PERFORMANCE DATA
Service Manual – YBZ DCI 1-A.1 GB 5-5
5.3 YBZ430
5.3.1 Cooling Capacity (kW)
ID COIL ENTERING AIR DB/WB TEMPERATURE [C
0
]
OD COIL ENTERING
AIR DB
TEMPERATURE [C
0
] DATA 22/15 24/17 27/19 29/21 32/23
TC
80 - 110 % of nominal
SC
80 - 105 % of nominal
-10 - 20
(protection range)
PI
25 - 50 % of nominal
TC 8.37 8.86 9.34 9.83 10.32
SC 7.26 7.43 7.61 7.78 7.95
25
PI 1.91 1.95 1.99 2.03 2.07
TC 7.60 8.08 8.57 9.06 9.55
SC 6.89 7.06 7.23 7.41 7.58
30
PI 2.13 2.17 2.21 2.25 2.29
TC 6.82 7.31 7.80 8.29 8.78
SC 6.52 6.69 6.86 7.04 7.21
35
PI 2.35 2.39 2.43 2.47 2.51
TC 80%-92% of nominal
SC 80%-92% of nominal
40(Protection Range)
PI 80%-92% of nominal
TC 70%-85% of nominal
SC 70%-85% of nominal
46(Protection Range)
PI 90%-100% of nominal
LEGEND
TH – Total Heating Capacity, kW
PI
– Power Input, kW
WB – Wet Bulb Temp., (
o
C)
DB – Dry Bulb Temp., (
o
C)
ID – Indoor
OU –
Outdoor
5.3.2 Capacity Correction Factors
Cooling Capacity Ratio Vs. Outdoor Temperature
0.5
0.6
0.7
0.8
0.9
1
1.1
1.2
1.3
1.4
20 25 30 35 40 45
Outdoor Temperature [deg C]
Ca
p
a
c
it
y
Ra
ti
o
n