Startup; Operating Conditions - Lauda UC 2 Operation Manual

4

STARTUP

4.1 OPERATING CONDITIONS

Water temperature at the inlet:
Nominal:
Maximum:
Cold water temperature at the outlet:
Nominal:
Minimum:
Maximum:
Temperature of the ambient air:
Nominal:
Minimum:
Maximum:
Observe the permissible storage and operating temperatures. See point 8.1 for storage temperature limits.
(1) If the temperature difference between inlet and outlet is higher than 10ºC (18ºF) or if the inlet
temperature will exceed 40ºC (104ºF), the external by-pass accessory should be installed. This typically
happens with applications that use a water flow significantly lower than the chiller's nominal flow.
The external by-pass option allows the chiller to work with close to its nominal flow even if the application is
only using part of that flow.
Please note that a flow lower than the chiller's nominal flow can negatively affect the outlet temperature
stability.
(2) The Ultracool units can work with cold water temperatures lower than 7ºC (45ºF). To do so, add ethylene
glycol to the water and contact an authorized technical service to adjust the chiller.
(3) In order to work at temperatures lower than 0ºC (32ºF), add ethylene glycol to the water and contact an
authorized technical service to adjust the chiller.
15ºC (59ºF)
40ºC (104ºF) (1)
10ºC (50ºF)
7ºC (45ºF) (2)
35ºC (95ºF)
25ºC (77ºF)
-15ºC (5ºF) (3)
50ºC (122ºF)
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