Technische Alternative UVR 16x2

Heating circuit control
61
Operating level: The operating level indicates what defines the operating mode. Priorities are
assigned to the operating levels. Operating level 0 has the highest priority; operating level 6 has the
lowest priority.
The active operating level can be seen in the function status screen and in the output variables.
Output variable: The numeric value issued indicates the priority of the active operating level and
corresponds to column 1 in Table 2.
Table 2
Priority
Operating level
Operating mode
Becomes active if
Comments
0
Special mode
0 Inactive
Enable heating circuit = OFF
Heating circuit completely
deactivated
9 Fault
Outside temperature > 100 °C
OFF if OT < 75 °C
An outside temperature of 0 °C is
applied.
10 Maintenance
Maintenance function ON
Enable status of pump and mixer
irrelevant
11 Ext set flow t
Heating with ext set flow temp.
ON
Digital input signal at the Heating
with ext set flow temp. input
variable
Enable status of pump and mixer
irrelevant
4 Frost prot. if shutdown
condition active or
Enable pump is OFF
Frost protection condition met
(Outside temp. < T.outside
AVc or Act. T.room
< T.room frost)
1
Window contact
Digital input signal at the Window
contact input variable
Mode applicable in the
current operating level
Window contact ON
3 Standby
Window contact OFF
4 Frost prot.
Window contact OFF and frost
protection condition met
2
External
Input signal at the External
switch input variable
Time/auto
Signal at the External switch:
analogue value 65
Operating mode as per Time
condition status
(+ RAS: Time/auto)
1 Standard
Signal at the External switch:
analogue value 66
2 Setback
Signal at the External switch:
analogue value 67
3 Standby
Signal at the External switch:
analogue value 64
4 Frost prot.
Signal at the External switch:
analogue value 64 and frost
protection condition met
Return to the mode
applicable in the current
operating level
Signal at the External switch:
analogue value 127
Mode applicable in the
current operating level
Signal at the External switch:
digital OFF
3 Standby
Signal at the External switch:
digital ON
4 Frost prot.
Signal at the External switch:
digital ON, and frost protection
condition met