Internal extension H2
The internal extension is integrated
into the control unit housing. As alter-
native, the following functions can be
connected to relay output
sK
. The
function is allocated via coding
address 53:
&
Central fault message (code 53:0)
&
Cylinder loading pump (code 53:3)
&
DHW circulation pump (code 53:1)
&
Heating circuit pump for heating cir-
cuit without mixer (code 53:2)
An interlock for extractors can be con-
nected to connection
aBJ
.
Extensions for external connections (accessory)
(cont.)
99
Function description
56
92
550
GB
Summary of Contents for VITODENS 300 WB3A
Page 10: ...Opening the control unit housing 10 5862 570 GB...
Page 14: ...Closing control unit housing and inserting user interface 14 5862 570 GB...
Page 129: ...Parts lists cont 113 Parts lists 5692 550 GB...
Page 130: ...Parts lists cont 114 Parts lists 5692 550 GB...
Page 131: ...Parts lists cont 115 Parts lists 5692 550 GB...
Page 132: ...Parts lists cont 116 Parts lists 5692 550 GB...
Page 133: ...Parts lists cont 117 Parts lists 5692 550 GB...
Page 145: ...129 5692 550 GB...
Page 146: ...130 5692 550 GB...
Page 147: ...131 5692 550 GB...