Viessmann VITOLADENS 300-W Installation And Service Instructions Manual page 116

Function description
External extensions (accessories)
Functions
One of the following circulation pumps
can be connected to each of the connec-
tions A1 and A2:
■ Heating circuit pump for the heating
circuit without mixer
■ Circulation pump for cylinder heating
■ DHW circulation pump
Function assignment
Function
DHW circulation pump sK
Heating circuit pump sÖ
Circulation pump for cylinder
heating sA
116
(cont.)
Select the output functions by means of
the codes on the boiler control unit.
Code ("General" group)
Output A1
33:0
33:1 (delivered condi-
tion)
33:2
Output A2
34:0 (delivered condi-
tion)
34:1
34:2