Viessmann Vitodens 222-F B2TA Installation And Service Instructions Manual page 155

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
(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
Function description
Output A2
34:0 (delivered condi-
tion)
34:1
34:2
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