Viessmann VITOCROSSAL Service Instructions Manual page 47

General/Group "1"
(cont.)
Coding in the delivered condition
3C:0 Function of input DE3 at EA1 ex-
tension: Not assigned
3D:5 DHW circulation pump runtime for
brief operation: 5 min
4B:0 Function, input 96, room tempera-
ture controller (Vitotrol 100, only
for constant temperature control
units)
51:0 System with low loss header con-
nected: Boiler circuit pump (output
20) is always started when there is
a heat demand.
Possible change
3B:6 Function of input DE2: Brief opera-
tion of DHW circulation pump (push-
button function).
Setting of DHW circulation pump
runtime: Coding address 3d
3C:1 Function of input DE3: Operating
program changeover
3C:2 Function of input DE3: External de-
mand with set flow temperature
Setting of set flow temperature for
external demand: Code 9b
Function, circulation pump for cylin-
der heating: Coding address 5F
Function, heating circuit pumps:
Coding address D7
3C:3 Function of input DE3: External
blocking
Function, circulation pump for cylin-
der heating: Coding address 5F
Function, heating circuit pumps:
Coding address D7
3C:4 Function of input DE3: External
blocking with fault message input
Function, circulation pump for cylin-
der heating: Coding address 5E
Function, heating circuit pumps:
Coding address D6
3C:5 Function of input DE3: Fault mes-
sage input
3C:6 Function of input DE3: Brief opera-
tion of DHW circulation pump (push-
button function).
Setting of DHW circulation pump
runtime: Coding address 3d
3D:1 DHW circulation pump runtime ad-
to justable from 1 to 60 min
3D:60
4B:1 Demand externally.
4B:2 Block externally.
51:1 System with low loss header:
When there is heat demand, the
boiler circuit pump only starts if the
burner is operational. The boiler cir-
cuit pump stops when the run-on
time ends.
51:2 System with heating water buffer
cylinder:
When there is heat demand, the
boiler circuit pump only starts if the
burner is operational. The boiler cir-
cuit pump stops when the run-on
time ends.
Code 2
47