Rittal 3302 Series User Manual

6 Operation
EN
20 Rittal enclosure cooling unit
6.2.4 General information about programming
Using buttons 1, 2 and 3 (fig. 30) you can change
24 parameters within the preset ranges (min. value,
max. value).
Tables 4 and 5 show the parameters which can be al-
tered. fig. 32 on page 22 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. While in
programming mode, if you do not press any buttons for
approx. 30 seconds, the display will first flash, then the
controller will switch back to normal display mode. "Esc"
in the display indicates that any changes made have not
been saved.
 Press the programming buttons  (°C) or  (°F) to
switch between the editable parameters (see tables 4
and 5).
 Press button 2 ("Set") to select the displayed parame-
ter for editing.
The current value of this parameter is displayed.
 Press one of the programming buttons  (°C) or
 (°F).
"Cod" will appear in the display. In order to be able to
change a value, you must enter the authorisation code
"22".
 Keep the  programming button (°C) held down until
"22" appears.
 Press button 2 ("Set") to confirm the code.
You can now alter the parameter within the preset limits.
 Press one of the programming buttons  (°C) or
 (°F) until the required value appears.
 Press button 2 ("Set") to confirm the change.
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 2 ("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 (internal enclosure tempera-
ture).
You can also program the e-Comfort controller using a
diagnosis software package (Model No. 3159.100),
which is supplied with a connection cable to the PC. The
cable connector on the rear of the e-Comfort controller
display serves as an interface.
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. If the cooling unit
and compressor run times are too long
< 1 minute, the switching hysteresis to pro-
tect the cooling unit is automatically in-
creased (see message "LH" in section
6.2.9 "Evaluating system messages").
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, and due to the risk
of increased condensation, do not set the
temperature lower than that actually neces-
sary.
Note on useful cooling power:
Interactive performance diagrams for calcu-
lating the useful cooling power may be
found at www.rittal.com.

Rittal 3302 Series Specifications

General

Brand	Rittal
Model	3302 Series
Category	Accessories
Language	English