AHI Carrier Catalog | Page 188

Operating limits

COOLING
Evaporator water temperature , ° C Minimum
Water entering temperature at start-up
-
45 *
Water entering temperature during
6.8
21
operation
Water leaving temperature during operation
3.3
15
Maximum
Note : If the leaving water temperature is below 4 ° C , a glycol / water solution or the frost protection option must be used .
Condenser air temperature , ° C
Minimum
Maximum
Storage
-20
68
Operation : Standard unit
-10
55 **
With winter operation option ( option 28 ) -20
55 **
With high energy efficiency option ( option 119 )***
-10
55 ****
Note : If the air temperature is below 0 ° C , a glycol / water solution or the frost protection option must be used . * Based on the installation type and the air temperature ** Part load , based on the water temperature *** Recommended for operation above 46 ° C **** Part-load operation

Operating range

30XA standard unit and 30XA504 , 854 , 904 with option 119
Evaporator water flow rate ( l / s )*
30XA
Minimum
Maximum **
252
3.6
37.5
302
4.0
40.5
352
4.3
40.5
402
5.3
34.1
452
6.0
36.9
504
6.7
42.0
502
6.7
42.0
602
8.1
45.0
702
8.9
56.1
752
9.6
59.1
802
10.4
67.1
854
11.0
67.1
852
11.0
67.1
904
11.8
73.9
902
11.8
73.9
1002
13.1
83.9
1112
15.1
126.5
1212
16.4
132.1
1312
17.5
118.5
1382
18.8
131.1
1402
19.3
107.4
1502
19.9
109.4
1702
22.0
107.4
* Standard evaporators with water as the heat transfer fluid . ** The maximum water flow rate corresponds to a pressure drop of 100 kPa .
30XA high-energy efficiency unit or unit with option 119
Air entering temperature , ° C
Air entering temperature , ° C
Evaporator leaving water temperature , ° C Evaporator leaving water temperature , ° C
Legend
Operating range , unit equipped with option 28 ( winter operation )
Below 0 ° C air temperature the unit must either be equipped with the evaporator frost protection option ( 41A or 41B ), or the water loop must be protected against frost by using a frost protection solution ( by the installer ).
Part load average
188 C A R R I E R 2 0 1 6 / 2 0 1 7