Internal Extensions (Accessories) - Viessmann VITODENS 200-W Service Instructions Manual

Weather-compensated control unit
Boosting DHW heating
The booster heating function is activated
if a switching period is selected for the
fourth time phase.

Internal extensions (accessories)

Internal extension H1
The internal extension is integrated into
the control unit housing. The following
alternative functions can be connected
to relay output sK. The function is allo-
cated via coding address "53":
Function description
(cont.)
The set temperature value for the heat-
ing boost is adjustable in coding address
"58".
■ Central fault message (coding
address "53:0")
■ DHW circulation pump (coding
address "53:1") (only for weather-
compensated operation)
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