Operating range - Cooling (SC)
Acoustic configuration: compressor soundproofing (SC)
Size
352
402
432
452
502
552
602
702
802
External exchanger
Max inlet air temperature
1
°C
45
44
43
44
44
43
42
44
43
Max inlet air temperature
2
°C
50
50
50
50
50
50
50
50
50
Min. inlet air temperature
3
°C
-10
-10
-10
-10
-10
-10
-10
-10
-10
Min. inlet air temperature
4
°C
-7,0
-7,0
-7,0
-7,0
-7,0
-7,0
-7,0
-7,0
-7,0
Min. inlet air temperature
5
°C
-2,0
-2,0
-2,0
-2,0
-2,0
-2,0
-2,0
-2,0
-2,0
Min. inlet air temperature
6
°C
11
11
11
11
11
11
11
11
11
Internal exchanger
Max inlet water temperature
°C
24
24
24
24
24
24
24
24
24
Min. outlet water temperature
7
°C
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
Min. outlet water temperature
8
°C
-7.0
-7.0
-7.0
-7.0
-7.0
-7.0
-7.0
-7.0
-7.0
Data referred to the following conditions:
internal exchanger water = 12/7°C
air at rest
Caution: Air conditions which are at rest are defined as the absence of air flowing towards the unit. Weak winds can
induce air to flow through the exchanger and air-levels which can cause a reduction in the operating range. In the
presence of predominant winds it is necessary to use suitable windbreak barriers.
N.B. To ensure the correct maintenance (no operation) with outdoor air temperatures less than -10°C, the Standard
unit (no FREE-COOLING configuration) must be equipped with the “Electrical panel anti-freeze protection” option
and continue to be supplied with power. The hydraulic circuit must be filled with an adequate percentage of anti-
freeze. In these conditions, the minimum outdoor air temperature which is permitted depends on the model of the
“Electrical panel anti-freeze protection” option which has been chosen, up to a limit value of -39°C.
The operating mode can also be extended up to an outdoor air temperature of –25°C, but only in the FREE-COOLING
configuration which is complete with an “Electrical panel anti-freeze protection” option of an adequate size.
The operating mode can also be extended up to an external air temperature of –39°C, but only in the FREE-COOLING
configuration which is complete with the ‘Electrical panel anti-freeze protection‘ option of an adequate size.
In the Standard unit (no FREE-COOLING configuration) with an empty hydraulic circuit and without a power supply,
correct maintenance (not operating) is possible up to a outdoor air temperature of -20°C.
1. Max. inlet air temperature - Unit at full load
2. Max. inlet air temperature - Unit at part load
3. Min. inlet air temperature - Unit at full load and outdoor air at rest
4. Min. inlet air temperature - Unit at part load and outdoor air at rest
5. Minimum input air temperature - Stepped unit and air speed at 0.5 m/s.
6. Minimum input air temperature - Stepped unit and air speed at 1 m/s
7. Standard unit without Low liquid temperature device and air entering the external exchanger at 35°C
8. Unit with Low liquid temperature device and air entering the external exchanger at 35°C. Fluid treated with 40% ethylene glycol.
Graph referred to size 352
The detail of each size is shown in tabular date.
Ta (°C) = external exchanger inlet air temperature (dry bulb).
To (°C) = internal exchanger outlet water temperature
1. Standard unit:(no “Liquid low temperature” configuration)
2. Unit in “Low liquid temperature” configuration (40% ethylene glycol).
3. capacity-controlled unit (automatic capacity control)
4. Unit at full load: (automatic modulation of the air flow rate)
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Содержание WSAT-XEE 352
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