20
Rittal air/water heat exchanger assembly instructions
6 Operation
EN
• Hold the rubberised potentiometer display (see
Fig. 17, item 5, page 18) down while you switch the
mains power back on, and keep the button (5) held
down for a further 10 seconds.
The air/water heat exchanger starts running. This is
signalled by an asynchronous flashing of the green
LED. After approximately three minutes or upon
reaching 15°C, test mode will end. The unit switches
off and changes to normal operation.
6.1.4 Setting the temperature
To change the temperature setting:
• Dismantle the trim panel of the controller as
described in “6.1.3 Basic controller test mode”,
page 19.
• Set the required temperature on the temperature
setting device (page 18, Fig. 17).
• Carefully push the trim panel onto the display until
you hear it snap into place.
• Push the display back into the louvred grille.
• Re-attach the louvred grille to the air/water heat
exchanger.
6.2 Control using the Comfort controller
For unit types SK 3209.5xx and SK 3210.5xx.
Fig. 19:
Comfort controller
Legend
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
– Three voltage variants are supported:
– 115 V
– 230 V
– 400 V, 2-phase
– Integral start-up delay and door limit switch
function
– Monitoring of all motors (fans)
– Master-slave function with a maximum of ten units.
One unit functions as a master unit. Once the set
temperature is reached by one of the connected
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 within the range
2 – 10 K, preset to 5 K.
– Visualisation of the current enclosure internal tem-
perature and all error messages in the 7-segment
display.
– Using an interface card (Model No. SK 3124.100),
the unit may be incorporated into higher-level
remote monitoring systems such as the Rittal
Computer Multi Control CMC.
The air/water heat exchanger operates automatical-
ly, i.e. after switching on the power supply, the fan
(see page 5, Fig. 2) will run continuously and perma-
nently circulate the internal enclosure air. The fan
and the magnetic valve are controlled by the Comfort
controller.
The Comfort controller has a 7-segment display
(Fig. 19, no. 4). After switching on the power supply,
the current software version initially appears on this
display for approx. two seconds.
Note:
With the Basic controller, the temperature
is preset at the factory to +35°C.
In order to save energy, do not set the tem-
perature lower than that actually necessary.
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Summary of Contents for SK 3209. Series
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