Function description
Internal extensions (accessories)
Internal extension H1
Fig.69
The internal extension is integrated into the control unit
casing. The following alternative functions can be con-
nected to relay output
sK
coding address "53" in group "General":
■
Central fault message (code "53:0")
■
DHW circulation pump (code "53:1") (only for
weather-compensated operation)
116
. The function is assigned via
■
Heating circuit pump for heating circuit without mixer
(code "53:2")
Circulation pump for cylinder heating (code "53:3")
■
An external gas isolation valve can be connected to
connection
gD
.