Rittal air/water heat exchanger
15
6 Operation
EN
You can now alter other parameters in the same way.
There is no need to re-enter the authorisation code
"22".
To exit programming mode, press button 3 ("Set")
again for approximately 5 seconds.
"Acc" will appear in the display to indicate that the
changes have been saved. The display then switches
back to regular operation (enclosure internal tempera-
ture).
You can also program the e-Comfort controller using a
diagnosis software package (Model No. 3159.100), the
supply of which also includes a connection cable to the
PC. The cable connector on the rear of the e-Comfort
controller display serves as an interface.
6.4
Eco-mode
All Rittal TopTherm heat exchangers with e-Comfort
controller from firmware 3.2 have the energy-saving
eco-mode, which is activated in the delivered state.
The eco-mode is used to save energy in the heat ex-
changer if there is no thermal load, or there is a low ther-
mal load in the enclosure (e.g. standby operation, no
production or weekend). During this process the heat
exchanger fan in the internal circuit is switched off as ap-
propriate if the actual enclosure internal temperature
drops to 10 K below the setpoint temperature set. Also
to reliably measure the internal temperature during this
process, the fan starts cyclically for 30 sec. every
10 minutes (fig. 17). If the internal temperature reaches
the range 5 K below the setpoint set again, the fan
switches back to continuous operation. If required, the
eco-mode can be deactivated via the control display.
For this purpose switch the parameter from 1 to 0 in the
programming level (tab. 3). The fan then runs continu-
ously.
Fig. 17:
Diagram of eco-mode
ON
Internal
fan status
Internal
temperature
Setpoint
-5 K
Setpoint
-10 K
OFF
Time
10 min.
30 sec.
10 min.
