Viessmann Vitodens 222-F Installation And Service Instructions For Contractors page 66

Parameter level 2
General
(cont.)
"Function, input DE3 at EA1 extension"
Setting
None
Operating program changeover
External demand with set flow temperature
External blocking
External blocking with fault message
External fault message
Brief operation, DHW circulation pump
(pushbutton function)
"DHW circulation pump runtime for brief operation"
Setting
5 min
... min
"Function internal circulation pump with signal "External blocking""
Setting
Remains in control mode
Is switched off
Is switched on
"Function internal circulation pump with signal "External demand""
Setting
Remains in control mode
Switch off internal pump or switch on inter-
nal pump at VIUPM pump
Is switched on
"Function, input 96"
Setting
Without
External demand
External blocking
"Function of internal circulation pump for operation with low loss header or heating water buffer cylin-
der"
Setting
Low loss header: Circulation pump always
runs on demand
Low loss header: Circulation pump only
runs on demand if the burner is running
with run-on time
Heating water buffer cylinder: Circulation
pump only runs on demand if the burner is
running with pump run-on time
66
Explanations
3C:0
3C:1
3C:2 Set flow temperature setting: parameter 9B
Internal circulation pump function: parameter 3F
3C:3 Internal circulation pump function: parameter 3E
3C:4 Internal circulation pump function: parameter 3E
3C:5 Fault message hook-up from external devices
3C:6 DHW circulation pump runtime setting: parameter 3D
Explanations
3D:5
3D:0 to Adjustable from 1 to 60 min
3D:60
Explanations
3E:0
3E:1
3E:2
Explanations
3F:0
3F:1
3F:2
Explanations
4B:0 Function of external hook-up at plug 96
4B:1
4B:2
Explanations
51:0
51:1
51:2