Viessmann Vitodens 222-F Installation And Service Instructions For Contractors page 74

Parameter level 2
DHW
(cont.)
"DHW cylinder hydraulic connection"
Setting
Directly at boiler or upstream of low loss
header
Downstream of low loss header
"Function of circulation pump for cylinder heating at "External blocking" signal"
Setting
Remains in control mode
Is switched off
Is switched on
"Function of circulation pump for cylinder heating at "External demand" signal"
Setting
Remains in control mode
Is switched off
Is switched on
"Set boiler water temperature for DHW heating"
Setting
20 K
... K
"Circulation pump run-on"
Setting
2 min.
No run-on
... Min.
"Additional function for DHW heating"
Setting
Without
1x daily
All ... Days
2x daily
"Diverter valve"
Setting
Without
With
74
Explanations
5B:0
5B:1
Explanations
5E:0
5E:1
5E:2
Explanations
5F:0
5F:1
5F:2
Explanations
60:20 During DHW heating, the boiler water temperature is
up to 20 K higher than the set DHW temperature
60:5 to The differential between the boiler water temperature
60:25 and the set DHW temperature is adjustable from 5 to
25 K
Explanations
62:2 Circulation pump with 2 min run-on time after cylinder
heating
62:0
62:1 to Run-on time adjustable from 1 to 15 min
62:15
Explanations
Only if control unit has been changed to constant tem-
perature mode.
63:0 Circulation pump with 2 min run-on time after cylinder
heating
63:1
63:2 to Additional function adjustable from every 2 days to ev-
63:14 ery 15 days
63:15
Explanations
65:0
65:... Information on the type of diverter valve (never adjust;
specified by the boiler coding card)