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12 - OPTIONS
12.4.4 - Operating range:
Operating range
Hot water temperature (option 49)
Hot water temperature (option 50(+))
(1) A three-way valve must be used for installations with a lower temperature.
(2) If the temperature difference between the air and the hot water demand is
significant, it is recommended to activate optimised recovery mode (see recovery
operation)
(3) For option 50, the maximum hot water temperature depends on the water
temperature at the evaporator. (See option 50: Operating limit graph)
Option 50: Operating limit
Limiting of the condenser leaving water temperature is due to the
screw compressor operating range. If the condenser leaving water
temperature is above the limit value given in the curves below,
the unit will remain in heat recovery mode but will limit the
recovered heating capacity by increasing the ventilation speed.
Option 50: Total heat recovery Operating limits:
With brine option
(option 5 or 6)
Evaporator leaving water temperature (°C)
Part load < 30 %
Full load
NOTE:
-
Evaporator ∆T = 5K
-
Condenser ∆T = 5K
-
These ranges are guidelines only. Verify the operating range with the
Carrier electronic catalogue.
NOTE: The Carrier Electronic catalogue generates recovery
performances under wind conditions of 12 km/h. If the unit
is located in an area exposed to the wind, the recovery
capacity may be affected.
86
Minimum Maximum
°C
18
(1)
65
(2)
°C
18
(1)
60
(2)(3)
Standard
(leaving water >3.3 °C)
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