Parameter Entry; Entry Of Nominal Temperatures; Entry Of Defrosting Times - Viessmann CS Installation And Operating Instructions Manual

GB
8.2

Parameter entry

If both keys [ ] and [ ] are actuated simultaneous-
ly during operation, the Parameter function will be
accessed.
In this function, the nominal temperature and the
defrost times can be entered or changed. Likewise, the
mode of operation of the evaporator fan for high or low
air humidity in the coldroom can be set.
The designation of the selected parameter appears in
the display, while the yellow LED in the "Stop-Start-
Enter" key illuminates; in this case, the "Stop-Start" func-
tion is switched off.
By actuating the "Stop-Start-Enter" key, the display can
be switched between the parameter designation and
the parameter value.
By using the keys [ ] or [ ], the parameter address or
the parameter value can be changed within the prescri-
bed limits.
The parameters can be protected against unauthorised
changes by means of a password (P07 <> x2). In order to
access the parameters released by the System operator
in this case, the following procedure should be under-
taken:
Depress both keys [ ] and [ ] simultaneously during
operation, P01 appears in the display, the yellow LED in
the "Stop- Start-Enter" key illuminates simultaneously.
Depress the "Stop-Start-Enter" key
- 1 is indicated in the display.
Select the value 5 with the keys [ ] or [ ].
Depress the "Stop-Start-Enter" key
- P01 is indicated in the display.
By using the keys [ ] or [ ], the desired parameters P02
- P09, or P02 - P23 as appropriate (see 8.2.6 ), can now
be selected.
Parameter entry will be ended automatically after 10
sec. if a key has not been actuated. It will also be ended
if the value 0 is entered into parameter P01.
General notice (liability): the details of this technical documents serve for description. Consents regarding the availability of certain features or
regarding a certain purpose always require a special written agreement.
Page No. 20-GB

8.2.1 Entry of nominal temperatures

Following entry of the password, select parameter P02
(indication in display SL.t.), depress the Enter key, the
current nominal temperature is indicated in °C. It can be
changed within the range released for respective unit
model (normal cooler -5°C to 20°C; deep -freezer -25°C
to -5°C) by using the keys [ ] or [ ].

8.2.2 Entry of defrosting times

Defrosting according to specified cycle times
- Entry of the defrost pause:
Following entry of the password, select parameter P03
(indication in display Ab.h.), depress the Enter key, the
current defrost pause time will be indicated in hours. It
can be changed within the range of 1 to 24 hrs. by using
the keys [ ] or [ ].
The defrost pause should shortened if the air humidity
in the coldroom is so high that the evaporator is is com-
pletely iced over.
Defrosting at definite specified times
If a DCF radio receiver is connected to the control unit,
12 switching points can be entered into the parameters
P12 to P23, at which times the defrosting process will be
started. For this, the parameter P30 must be set accor-
dingly (only by a refrigeration specialist company).
Following entry of the password, select parameters P12
to P23 (indication in display t.01 .. t.12), depress the
Enter key, the current switching point for starting the
defrosting process will be indicated in format hh.m(x10).
It can be changed within the range of 00.0 to 23.5 or set
to "OFF" by using the keys [ ] or [ ]. The numbers in
front of the decimal point indicate the hours, while the
digit after the decimal point indicates the minutes in
values of ten.
8.2 - 8.2.2
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