Application Data; Operating Range; Minimum Chilled Water Flow (Units Without Hydronic Module); Maximum Chilled Water Flow (Units Without Hydronic Module) - Carrier Aquaforce 30XA302 Installation, Operation And Maintenance Instructions

6 - APPLICATION DATA

6.1 - Operating range

30XA standard unit and 30XA0504, 854, 904 with
option 119.
Evaporator leaving water temperature, °C
30XA unit with option 119
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
ATTENTION: Option 28 (Winter operation)
If the outside temperature is below -10 °C and the unit
has been switched off for more than 4 hours, it is
necessary to wait 2 hours after the unit has been switched
on again to allow the frequency converter to warm up.
Evaporator water temperature
Water entering temperature at start-up
Water entering temperature during operation
Water leaving temperature during operation
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
Storage
Operation, standard unit and 30XA504, 854, 904
with opt 119
With winter operation option (option 28)
With high energy efficiency option (option 119)***
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
6.2 - Minimum chilled water flow (units without
hydronic module)
The minimum chilled water flow is shown in the table on the
next page. If the system flow is less than this, the evapo-
rator flow can be recirculated, as shown in the diagram.
For minimum chilled water flow rate
1 Evaporator
2 Recirculation
6.3 - Maximum chilled water flow (units without
hydronic module)
The maximum chilled water flow is shown in the table on
the next page. If the system flow exceeds the maximum
value, it can be bypassed as shown in the diagram.
For maximum chilled water flow rate
1 Evaporator
2 Bypass
°C Minimum Maximum
- 45*
6.8 21
3.3 15
°C Minimum Maximum
-20 68
-10 55**
-20 55**
-10 55****
1
2
1
2
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