Carrier AquaForce 30XBE 250 User Manual

51
6 - APPLICATION DATA
6.1 - Operating range
Evaporator Leaving Water Temperature (°C)
Air inlet temperature (°C)
Low brine
Medium brine
Light brine
NOTE
Ranges given as a guide using ethylene glycol for an evaporator ΔT = 3K. Refer
to the electronic catalogue.
Winter operation option (included in standard for 30XBE & 30XBP ranges)
Low temperature brine, (-15°C ethylene glycol / -10°C propylene glycol)
Medium temperature brine, (-12°C ethylene glycol / -8°C propylene glycol)
Light temperature brine, (-3°C ethylene glycol / 0°C propylene glycol)
Full load - 30XB- range
Full load - 30XBE/P ranges
Full load - OPT 15LS(+)
Part load
Power factor correction option (option/QM 231) available for an inlet air
temperature up to +45°C
For operation in pure water at an inlet air temperature below 0°C, the frost
protection (option_41A or 41B) must be provided
ATTENTION: Option 28 (Winter operation)
If the outside temperature is below -10 °C and the unit has
been switched o 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.
Water heat exchanger Minimum Maximum
Entering temperature at start-up °C - 45
(1)
Leaving temperature during operation °C 3,3 15
Entering/leaving water temperature
di󰀨erence
K 2,8 10
Condenser air temperature Minimum Maximum
Storage -20 68
Operation, standard unit -10 55
(2)
With winter operation option (option 28) -20 55
(2)
With Low noise option (option 15LS) -10 52
(2)
Note: If the air temperature is below 0°C, a glycol/water solution or the frost
protection option must be used.
Note: If the leaving water temperature is below 4°C, a glycol/water solution or
the frost protection option must be used.
(1) Based on the installation type and the air temperature
(2) Part load, depended of sizes & leaving water temperature
6.2 - Minimum chilled water ow (units without
hydraulic module)
The minimum chilled water ow is shown in the table on the next
page. It is determined in order to allow su󰀩cient exchange and
preent the risk of excessive fouling. If the system ow is less than
this, the evaporator ow can be recirculated, as shown in the
diagram.
For minimum chilled water ow rate
1
2
1 Evaporator
2 Recirculation
6.3 - Maximum chilled (units without hydraulic
module)
The maximum chilled water ow is shown in the table on the next
page. If the system ow exceeds the maximum value, it can be
bypassed as shown in the diagram.
For maximum chilled water ow rate
1
2
1 Evaporator
2 Bypass
6.4 - Variable ow evaporator
Variable evaporator ow can be used in standard 30XB(E/P)
chillers. The chillers maintain a constant leaving water temperature
under all ow conditions. For this to happen, the minimum ow
rate must be higher than the minimum ow given in the table of
permissible ow rates and must not vary by more than 10% per
minute.
If the ow rate changes more rapidly, the system should contain
a minimum of 6.5 litres of water per kW instead of 3.25 l/kW.

Carrier AquaForce 30XBE 250 Specifications

General

Brand	Carrier
Model	AquaForce 30XBE 250
Category	Chiller
Language	English