Internal extension H2
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 interlock for extractors can b e co n-
nected to connection aBJ.
Extensions for external connections (accessory) (cont.)
101
Function description
5692 537 GB
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