Viessmann Vitodens 200-W Installation Instructions Manual page 85

General/group "1"
Coding in the delivered condition
3F:0 Boiler circuit pump stays
in control mode on "Ex-
ternal demand" signal
Function input lH: Room
4b:0
thermostat (Vitotrol 100,
only for constant temper-
ature control units)
51:0 System with low loss
header:
boiler circuit pump is al-
ways started when there
is a heat demand
52:0 Without flow temperature
sensor for low loss head-
er
53:1 Function terminal sK of
the internal extension:
DHW circulation pump
54:0 Without solar thermal
system
(cont.)
Possible change
3E:2
3F:1
3F:2
4b:1
4b:2
51:1
51:2
52:1
53:0
53:2
53:3
54:1
Code 2
Boiler circuit pump is star-
ted on "External blocking"
signal
Boiler circuit pump is stop-
ped on "External demand"
signal
Boiler circuit pump is star-
ted on "External demand"
signal
External demand
External blocking
System with low loss head-
er:
when there is heat de-
mand, the boiler circuit
pump will only be started if
the burner is running.
Circulation pump stops on
expiry of the run-on time.
System with heating water
buffer cylinder:
when there is heat de-
mand, the boiler circuit
pump will only be started if
the burner is running.
With flow temperature sen-
sor for low loss header (au-
tomatic recognition)
Function terminal sK: cen-
tral fault message
Function terminal sK: ex-
ternal heating circuit pump
(heating circuit 1)
Function terminal sK: ex-
ternal circulation pump for
cylinder heating
With Vitosolic 100 (auto-
matic recognition)
85