85
Coding in the delivered condition
Possible change
3E:2
Boiler circuit pump is star-
ted on "External blocking"
signal
3F:0
Boiler circuit pump stays
in control mode on "Ex-
ternal demand" signal
3F:1
Boiler circuit pump is stop-
ped on "External demand"
signal
3F:2
Boiler circuit pump is star-
ted on "External demand"
signal
4b:0
Function input
lH
: Room
thermostat (Vitotrol 100,
only for constant temper-
ature control units)
4b:1
External demand
4b:2
External blocking
51:0
System with low loss
header:
boiler circuit pump is al-
ways started when there
is a heat demand
51:1
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.
51:2
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.
52:0
Without flow temperature
sensor for low loss head-
er
52:1
With flow temperature sen-
sor for low loss header (au-
tomatic recognition)
53:1
Function terminal
sK
of
the internal extension:
DHW circulation pump
53:0
Function terminal
sK
: cen-
tral fault message
53:2
Function terminal
sK
: ex-
ternal heating circuit pump
(heating circuit 1)
53:3
Function terminal
sK
: ex-
ternal circulation pump for
cylinder heating
54:0
Without solar thermal
system
54:1
With Vitosolic 100 (auto-
matic recognition)
Code 2
General/group "1"
(cont.)
5585 174 GB
Service