CIAT AeroCONNECT 1B, Руководство по управлению

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EN7510364-00
4.7.4 Operation
Tu: Return operating temperature
Ta = Free cooling off air temperature
Ta = Tu – A117
When the outdoor temperature exceeds the value Ta, free
cooling will be stopped if the drycooler is already at 100%
Td = Air temperature value authorising the start of free
cooling operation =
Td = Tu – A118
When the air temperature is below the value Td, free cooling
operation is authorised
Valve position
The 2-way valves can be controlled by the motherboard if the
following conditions are met: max current = 3A - max voltage =
230V. Refer to the water circuit pump curve for the valve sizing.
When the outdoor temperature is greater than the value Ta, the drycooler will stop, the valves will switch and the following
message will appear.
F R E E C O O L I N G O F F
4.7.5 Parameter A112
The value of A112 corresponds to the air temperature that allowed it to select the drycooler.
This parameter is not for free cooling operation, it is for detecting a fault.
If the air temperature is < (A112 - 5°C) and the drycooler is operating at 100% power, the drycooler will authorise operation of the
water chiller and the fault message below will appear.
C H E C K
T H E I N S T A L L A T I O N
This fault is timed for 15 minutes from start-up. The fault is acknowledged by pressing the reset button.
If the temperature drops below that of value " 5" the parameter will be deactivated and control of this fault is inactive.
4.8 Warming function
This function is available for drycoolers with 1 coil and 1 circuit from version V07.
It is activated by selecting the parameter A109
A 1 0 9 O P E R A T I O N O F
C O O L I N G
W A R M I N G W I T H C O N T R O L
W A R M I N G W I T H O U T C O N T R O L
If A109 = COOLING (standard operation). The number of fan stages and/or the fan speed increases if the temperature of the fluid
increases
If A109 = WARMING the drycooler will heat the fluid using outdoor air during a warm period. This function requires the installation
of the outdoor sensor. When the outdoor air temperature is above the value of parameter A109.1, the warming function is active.
Two types of operation are possible: with or without control.
A 1 0 9 . 1 O U T . T E M P W A
R M I N G
O P E R A T I N G O R D E R 1 0 °
When the outdoor air is < A109.1 - (1°C) the warming operating order becomes inactive.
If the operating order is inactive the fans are not active.
If A109 = WARMING WITHOUT CONTROL:
If the water temperature < (Outdoor air temperature - 2°C all the
fans will operate at 100%
If the water temperature >= (Outdoor air temperature - 1°C) the
fans will stop
If A109 = WARMING WITH CONTROL
Control is at around setpoint A121 or A122.
This control is the opposite of the cooling function. The number
of fan stages and/or the fan speed decreases if the temperature
of the fluid increases.
Default value
Other setting values
Tu
Tu
Ext. air T°
Hysteresis
zone
FREE COOLING
operation
Authorised
FREE COOLING
operation Not
Authorised
A118 = 4
A117 = 2
e.g. Tu = 12°C
12°C
Td =
8°C
Ta =
10°C
Tu
Tu
Td =
8°C
Ta =
10°C
Ext. air T°
Hysteresis
zone
Closed
Open
Closed
Open
A118 = 4
A117 = 2
e.g. Tu = 12°C
12°C