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Rittal air/water heat exchanger assembly instructions
6 Operation
EN
6.2 Control using the e-Comfort controller
For unit types 3363.5XX to 3375.5XX.
Fig. 21:
Display and system analysis
of the e-Comfort controller
Key
1
Programming button, also display of the set
temperature unit (degrees Celsius)
2
Set button
3
Programming button, also display of the set
temperature unit (degrees Fahrenheit)
4
7-segment display
6.2.1 Properties
– Door limit switch function
– Monitoring of all motors (fans)
– Master-slave function with a maximum of ten units.
One device functions as a master unit. Once the
set temperature is reached by one of the con-
nected slave units or in the event of the door limit
switch function, the affected slave unit will report
to the master unit, which will switch all the other
air/water heat exchangers on or off as required.
– Switching hysteresis: adjustable from 2 – 10 K,
preset to 5 K.
– Visualisation of the current enclosure internal
temperature and all error messages in the 7-seg-
ment display.
The air/water heat exchanger operates automati-
cally, i.e. after switching on the power supply, the
fan (see fig. 2, page 4) will run continuously and
permanently circulate the internal enclosure air.
The fan and the magnetic valve are controlled by
the e-Comfort controller.
The e-Comfort controller has a 7-segment display
(fig. 21, no. 4). After switching on the power supply,
the current software version initially appears on this
display for approx. 2 seconds. In regular operation,
the display shows both the temperature (in degrees
Celsius or Fahrenheit – users may switch between
the two) and any error messages.
The current enclosure internal temperature is usually
displayed permanently. In the event of an error mes-
sage, this alternates with the temperature display.
The unit is programmed using buttons 1 – 3 (fig. 21).
The relevant parameters also appear in the display.
6.2.2 Launching test mode
The e-Comfort controller is equipped with a test
function, whereby the air/water heat exchanger
commences cooling operation independently of the
set temperature or door limit switch function.
Simultaneously press buttons 1 and 2 (fig. 21)
for at least 5 seconds.
The air/water heat exchanger starts running.
After approximately 5 minutes or upon reaching
15°C, test mode will end. The unit switches off and
changes to normal operation.
6.2.3 General programming information
Using buttons 1, 2 and 3 (fig. 21) you can change
the parameters within the preset ranges (min. value,
max. value).
Tables 8 and 9 show the parameters which can be
altered. fig. 25 on page 20 shows which buttons
must be pressed.
In principle, the programming is identical for all
editable parameters.
To enter programming mode:
Press button 2 (“set”) for approx. 5 seconds.
The controller is now in programming mode.
1
2
4
3
Note on switching hysteresis:
With a low hysteresis and short switching
cycles, there is a risk that cooling may
not be adequate or that only partial sections
of the enclosure are cooled.
Note on temperature settings:
With the e-Comfort controller, the tempera-
ture is preset at the factory to +35°C.
In order to save energy, do not set the
temperature lower than that actually
necessary.