CIAT DYNACIAT LG 080, Instruction Manual

Page: 32 / 68

5 - APPLICATION DATA
5.1 - Operating limits
LG standard operating limits
LG Minimum Maximum
Water type heat exchanger
Evaporator
Water inlet temperature (at start-up)
°C 7,5
(1)
27
Water outlet temperature (in operation) °C 5 (2) 20
Inlet/outlet temperature difference K 2.5 7
Condenser
Water inlet temperature (at start-up)
°C 15
(3)
55
(4)
Water outlet temperature (in operation) °C 20 60
Inlet/outlet temperature difference K 2.5 18
(1) For a water inlet temperature at start-up of less than 7.5°C, contact the
manufacturer
(2) Use of antifreeze is obligatory if the water outlet temperature is below 5°C.
Please refer to low temperature brine solution option for evaporator leaving
water low-temperature applications (< 5°C).
(3) For applications with a condenser entering temperature below 15°C the use
of a 3-way valve is recommended. This 3-way valve can be controlled by the
0-10 V analogue output of the Connect’Touch control.
(4) For a water flow rate that corresponds to a maximum water-side temperature
difference of 5 K.
LG unit operating Low temperature brine solution
option
LG + Low temperature brine solution option Minimum Maximum
Water type heat exchanger
Evaporator
Water inlet temperature (at start-up) °C -9,5
(1)
27
Water outlet temperature (in operation) °C -12
(1)
20
Inlet/outlet temperature difference K 2.5 3 (4)
Condenser
Water inlet temperature (at start-up) °C 15 (2) 55 (3)
Water outlet temperature (in operation) °C 20 60
Inlet/outlet temperature difference K 2.5 18
(1) A frost protection solution must be used.
(2) For applications with a condenser inlet temperature below 15°C the use of a
3-way valve is recommended. This 3-way valve can be controlled by the 0-10
V analogue output of the Connect’Touch control.
(3) For a water flow rate that corresponds to a maximum water-side temperature
difference of 5 K.
(4) For LG360-600, the maximum temperature is 5°C.
LG unit operating drycooler
LG + drycooler Minimum Maximum
Water type heat exchanger
Evaporator
Water inlet temperature (at start-up)
°C 7,5
(1)
27
Water outlet temperature (in operation) °C 5 (2) 20
Inlet/outlet temperature difference K 2.5 7
Condenser without hydraulic module
Air inlet temperature (at start-up) + during operation
°C 10-15
(3)
40-45
(4)
Condenser with option HP cond. variable-speed single-
pump
Air inlet temperature (at start-up) + during operation
°C -10
(5)
40-45
(4)
(1) For a water inlet temperature at start-up of less than 7.5°C, contact the manufacturer.
(2) Use of antifreeze is obligatory if the water outlet temperature is below 5°C.
Please refer to low temperature brine solution option for evaporator leaving
water low-temperature applications (< 5°C).
(3) The minimum air inlet temperature is based on the drycooler selection.
(4) The maximum air inlet temperature is based on the drycooler selection.
(5) For applications with a low condenser entering air temperature the use of a
3-way valve is recommended. This 3-way valve can be controlled by the 0-10
V analogue output of the Connect’Touch control.
LGN unit operating limits
DYANACIAT LGN Minimum Maximum
Evaporator
Water inlet temperature (at start-up) °C 7.5
(1)
27
Water outlet temperature (during operation) °C 5 (2) 20
Inlet/outlet temperature difference K 2,5 7
Air inlet temperature (at start-up and during operation) (3)
Air inlet temperature (fixed-speed fan) °C 0
(3)
35 to 48**
Air inlet temperature (variable-speed fan) °C -10 to -20* 35 to 48**
(1) For a water inlet temperature at start-up of less than 7.5°C, contact the
manufacturer.
(2) LGN units can function up to 0°C if the type of fluid used is modified. If the
water outlet temperature is below 5°C, an antifreeze protection must be used.
(3) The minimum operating temperature depends on the condenser selected. If
the condenser has few ventilation stages, the use of variable-speed fans is
recommended
* The minimum operating temperature depends on the condenser selected
** The maximum operating temperature depends on the condenser selected
Dynaciat LG/LGN EN-32