Stulz S-Klima C7000 User Manual page 36

.../special
Fan start phase
100 %
nmax
➊ ➋
Fan Control Compon.
start start
*Start all control-relevant components except
for the glycol pump that can be started
beforehand.
Fan stop phase
➌
Run-on
because of
fan inertia
Fan
Unit
stop
stop
Speed level
Filter offset ➎
Offset *
Speed reduction ➍ b
Dehum.speed ➏ b
UPS speed ➐
* The meaning of the offset is explained
on the previous page.
.../special/more .../special/more
➑a
EC tower:
Recommended values in the Config main menu Components/Air/Fan:
36
➊ Config
➋
➌
➍a
Using the "START 100 %" parameter
➍b
➎
fan control begins. This prevents an airflow alarm that could occur due to the fan rotor
➏a
➏b
inertia. During this time, the fan runs at 100 % speed.
➐
Using the "PRE-RUNTIME"
in relation to the beginning of the control with alarm monitoring, with the exception of
the glycol pump, which can also be started beforehand.
Different pre-runtimes for different units prevents the most current consuming compo-
nents starting simultaneously and prevents the power supply of the building becoming
overloaded.
The run-on time
of heat at the heater or a build-up of cold at the evaporator.
t/sec
If no functions (cooling, heating, humidifying, dehumidifying) have been requested
during a period of time that you define in the fourth line
start* the percentage that you adjust with "RED. SPEED."
The "FILTER OFFS."
a filter alarm is triggered, the maximum speed is increased by the filter offset value in
order to overcome the higher air resistance of a clogged filter.
If there is a dehumidification request during the time up to the dehumidification reduction
a and beyond, the dehumidification is introduced by reducing the fan speed. This time
➏
gives the unit the opportunity to regulate the humidity via dehumidification through the
expansion valve. This parameter should be at 0 for units without an electronic expan-
sion valve.
The "DEHU. SPEED"
speed. This is the speed for the first dehumidification method.
t/sec
The "UPS SPEED"
speed. If the controller receives a UPS signal, it uses this speed to carry out a backup
operation.
%
If the unit is operated in nominal operation at a low airflow rate, the fan speed can
100
be raised when the temperature setpoint is exceeded depending on the temperature
difference to the setpoint.
90
For this you set a positive temperature difference (EMERGENCY START)
nMax
setpoint, which represents the start point of the speed increase.
In addition, you set a maximum speed (EMERGENCY SPE.)
80
and a temperature difference (EMERGENCY END)
end point of the proportional speed increase. When reaching this second temperature
70
difference, the fan is operated with the maximum speed for the overload operation. This
65
speed is also kept when the temperature rises again.
55
In the last line, you can stop the fan opera-
tion by setting a "1" if cooling is not possible
because the compressor is in an alarm state.
The type of differential temperature control is
➑b
➒
set using the parameter "DTC type".
The "DTC type" parameter is not relevant for
the EC tower.
Components/Air
Fan/... (Part 2)
➊ , you set a time that has to elapse before the
➋ parameter, you set the start delay of all other components
➌ serves to dissipate hot or cold air in the unit and to avoid a build-up
➎ is entered as a positive difference to the maximum speed. If
➏ b is entered as a negative difference in % to the maximum
➐ b is also entered as a negative difference in % to the maximum
BA C7000 for EC Tower | EN | 01-2019 | 1000755
➍ a, the speed decreases by
➍ b.
➑
➑ b for overload operation
➒ to the setpoint, which marks the
Fan speed
Setpoint
➑
b
DXmax/
CWmax
➑
a
➒
a to the
T/°C