Viessmann Vitodens 300 - Extensions for External Connections (Accessory)

Internal extension H1
The internal extension is integrated
into the control unit housing. As alter-
native, the following functions can be
connected to relay ou tput sK.The
function is allocated via coding
address 53:
&
Central fault messa ge ( code 53:0)
&
Cylinder loading pump (code 53:3)
&
DHW circulatio n p ump (code 53:1)
&
Heating circuit pump for heating cir-
cuit without mi xer (code 53:2)
An external safety valve can be con-
nected to connection gD.
Extensions for external connections (accessory)
100
Function description
5692 537 GB