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4.10.2. Fan operation in cooling mode
If FC600 is in cooling mode and has the task of cooling the room, the valve V1 opens. The fan will start only
when the pipe reaches the temperature below the "d24" value. If the temperature of the pipe will increase by
2°C above the parameter "d24", the fan will be switched off and the valve will still be open. FC600 waits until
temperature of the pipe will drop below the "d24" parameter and only then starts the fan. This is useful if FC600
controls the water fan coils (coolers), which are not to be operated in the winter.
d25 - parameter in
Cooling Mode
setpoint temperature
= 20°C
d24 +2°C
d24 = 10°C
4.10.3. Fan operation in heating mode
If FC600 is in heating mode and has the task of heating the room, the valve V1 opens. The fan will start only
when the pipe reaches the temperature of the higher value of the parameter "d25". If the temperature of the
pipe drops below 2°C below parameter "d25", the fan will be switched off and the valve will still be open. FC600
expects an upward mode (above parameter "d25") and only then starts the fan. Such a solution is helpful if the
regulator controls the water fan coils (heaters), which are not to be operated in the summer.
d25 = 30°C
d25 -2°C
setpoint temperature
= 20°C
d24 - parameter in
Heating Mode
Note: When the pipe temperature is too low (in heating mode) or too high (in cooling mode) - the sensor icon
and digit "1" will flash on the LCD. When the pipe temperature is right, fan will start-up and the icons on the LCD
will be permanently lit (it will not blink).
58
Fan Coil FC600 Instructions Manual
t [°C]
M
STOP
M
ON
OFF
I
II
t [°C]
M
START
M
OFF
ON
I
II
pipe temperature
M
STOP
M
START
M
M
ON
III
pipe temperature
START
M
STOP
M
M
OFF
II
M
OFF
T [s]
M
M
STOP
M
ON
T [s]
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