Viessmann VITODENS 200-W Service Instructions Manual page 121

External extensions (accessories)
Functions
One of the following circulation pumps
can be connected to each of the termi-
nals A1 and A2:
■ Heating circuit pump for the heating
circuit without mixer
■ Circulation pump for cylinder heating
■ DHW circulation pump
Function
DHW circulation pump sK
Heating circuit pump sÖ
Circulation pump for cylinder heating sA
(cont.)
Allocating functions for outputs A1
and A2
Select the function for these outputs via
the codes on the boiler control unit:
■ Output A1: Code 33
■ Output A2: Code 34
Code
Output A1
33:0
33:1 (delivered
cond.)
33:2
Function description
Output A2
34:0 (delivered
cond.)
34:1
34:2
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