Viessmann CS Installation And Operating Instructions Manual page 24

GB
8.5 Operating mode parameters
8.5.1 Parameter list
Attention!
The following parameters decisively influence the operation of the Refrigeration unit. They may be changed only by
specialist personnel. For this reason, it is recommended that the password for the Operating mode parameter be made
unrecognisable.
If parameters are changed, the change should be entered into the column "Altered values".
Operating mode parameter (release when password P01 = 22)
The following parameters are pre-allocated as operating mode parameters for normal or deep freezer refrigeration. They can be adap-
ted. If necessary, they can be reset to the factory settings via P50 and P51.
Parameter Description
P28 Signal display from DCF antenna
P29 Door contact switch (0=without DC; 1=with DC)
P30 Defrosting operating mode
x0 = according to specified cycle times
x1 = according to specified cycle times, yet dependent
on compressor run time
x2 = dependent on specified switch points
(only with DCF antenna)
x3 = demand defrosting
0y = "Start defrosting" via door contact switched off
1y = "Start defrosting" via door contact switched on
P31 Max. admissible room temperature
P32 Min. admissible room temperature
P33 Room temperature difference
P34 Min. compressor standing time
P35 Evaporator fan start-up delay
P36 Evaporator fan run-down time
P37 Switch point for air circulation defrosting
Temperature difference for switch-on of demand
P38
defrosting
P39 Defrosting limiting temperature
P40 Evaporator dripping time
P41 Evaporator fan start-temperature
P42 Temperature alarm delay time
P43 Upper alarm temperature (nominal value + P43)
P44 Lower alarm temperature (nominal value - P44)
P45 Door contact alarm delay time
P46 Condenser nominal temp. for turning speed regulator
P47 Condenser fan turning speed in %
P48 Minimum condenser fan turning speed in %
P49 Condenser fan slew-rate turning speed regulator
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. 24-GB
Unit Range
sec. 0-59
0-1
00-03;
10-13
°C -50...+50
°C -50...+50
-8...-1
K
+1...+8
min. 3-10
min. 0-10
min. 0-20
°C 3-40
K 10-40
°C +5...+50
min. 0-10
°C -20...+10
min. 0-99
K 0-20
K 0-20
min. 0-99
°C 20-60
OFF/10 - 100
10...100
1-100
8.5 - 8.5.1
Specification
Altered
values
CT FT CS
0 0 0
0 0 0
20 -5 20
-5 -25 -5
+2 -2 +2
3 3 3
3 3 3
0 0 0
20 20 3
25 25 25
20 20 20
3 3 3
-5 -15 -5
60 60 60
10 10 10
5 5 5
4 4 4
20 20 20
40 40 40
10 10 10
We reserve the right to make technical changes!
FS
0
0
-5
-25
-2
3
3
0
3
25
20
3
-15
60
10
5
4
20
40
10