Parameter Description
Adjustment
range
Factory setting
Anti-legionella function. The tank is superheated every Saturday between
01:00 and 06:00 (65 °C)
0 = Deactivated
1 = Activated outside of the holidays
2 = Always activated
0 – 1
0
Compressor cut-off hysteresis in relation to the set point for the middle do
mestic hot water temperature sensor (only in Auto or Boost mode)
5 - 15
10
Maximum domestic hot water temperature for compressor cut-off (°C) (only
in Auto or Boost mode)
35 - 50
45
Minimum duration of compressor operation (minutes)
3 - 10
3
Anti-short-cycle period between two compressor start-ups (minutes)
5 - 10
5
Hydraulic back-up:
0 =R6 contact closed if there is a demand for the hydraulic back-up
1 =R6 contact open if there is a demand for the hydraulic back-up
0 – 1
0
Domestic hot water set point used for anti-legionella function
55 to 70 °C
65 °C
Output of the immersion heater. Unit: 0.1 kW
16 - 255
24
Water temperature difference between the tank temperature and the set
point before the restart of the compressor
1 to 15 °C
3 °C
(1)
Minimum room temperature for compressor operation
-5 to 20 °C
-5 °C
(1)
Maximum room temperature for compressor operation
20 to 35 °C
25 °C
(1) if
= 1
6.7.3
Control system sequence
Tab.13
Status Sub-status
Operating
0
0
Appliance off
7
Post-operation of the compressor
1
1
Anti-cycling activated
2
Wait for the start-up condition for domestic hot water production
3
Start-up of the fan and the defrosting valve
2
5
Compressor start-up
6
Defrosting
3
1
Anti-cycling activated
4
Back-up starts
7
Post-operation of the compressor
4
5
Compressor start-up
6
Defrosting
9
–
Lockout present
6 Commissioning
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