Fan with available pressure (option 10)
■■ Selection method
The base performances for the calculation are those of option
119 (only MCHE heat exchangers, see pages 24 and 25
of this manual). To obtain the capacities at the static duct
pressure, apply the coefficients shown in the tables on the
right.
Air flow
Cooling capacity
EER
Power input
l/s
kW
kW/kW
kW
30XA option 10
Fan pressure drop
Air flow
Cooling capacity
EER
Power input
Correction factors
0
20
40
0
-3.5
-7.5
0
-0.5
-1.0
0
-1.5
-3.5
0
+1.0
+2.5
Pa
%
%
%
%
60
-12.1
-1.5
-5.0
+3.5
Note: All fans must be individually ducted.
■■ Example
30XA 802 with 40 Pa pressure drop
Performances option 119 at the following conditions:
-- 35 °C outside air temperature
-- 12/7 °C entering/leaving water temperature
0 Pa for option 119
Correction factors
40 Pa
54167
787
3.13
251
-7.5%
-1.0%
-3.5%
+2.5%
50119
779
3
258
Application limits for correction factors for high air temperatures
48
60Pa
46
20Pa
44
Outdor air temperature, °C
COOLING
This option allows a duct connection at the discharge side of
the condenser fan. The unit is supplied with axial fans with a
speed of 15.8 r/s (same for option 119), each equipped with
a duct connection frame. The chiller can operate at a static
discharge pressure of up to 60 Pa with reduced performance.
The performances can be estimated using the coefficients
below, applicable at the conditions shown in the curve below.
42
40
38
36
34
32
30
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Leaving water temperature, °C
184
C
A
R
R
I
E
R
2
0
1
6
/
2
0
1
7