123
Internal extension H2
Fig. 81
The internal extension is integrated into the control unit
enclosure. The following alternative functions can be
connected to relay output
sK
. The function is assigned
via coding address "53" in group
"General"
:
■
Central fault message (code "53:0")
■
DHW circulation pump (code "53:1") (only for
weather-compensated operation)
Connect DHW circulation pumps with standalone
functions directly to the 230 V
∼
supply
■
Heating circuit pump for heating circuit without mixer
(code "53:2")
■
Circulation pump for cylinder heating (code "53:3")
An extractor fan can be switched off via connection
aBJ
when the burner starts.
Function description
Internal extensions
(cont.)
5773 216 GB
Functions
Summary of Contents for B2TA
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Page 107: ...107 Parts lists Hydraulics 5773 216 GB Components ...
Page 118: ...118 0004 0002 0005 0006 0001 0003 Fig 77 Parts lists Miscellaneous 5773 216 GB Components ...
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