Viessmann VITOPEND 200 Installation And Service Instructions Manual page 101

Extension for external connections (accessories)
The internal extension is integrated
into the control unit housing. The fol-
lowing alternative functions can be
connected to relay output sK. The
function is allocated via coding
address "53":
Internal extension H2
The internal extension is integrated
into the control unit housing. The fol-
lowing alternative functions can be
connected to relay output sK. The
function is allocated via coding
address "53":
Function description
(cont.)
&
Central fault message (code 53:0)
&
Heating circuit pump for a heating
circuit without mixer (code 53:2)
An external safety valve can be con-
nected to gD.
&
Central fault message (code 53:0)
&
Heating circuit pump for a heating
circuit without mixer (code 53:2)
An external extractor interlock can be
connected to aBJ.
101