Internal Extensions (Accessories) - Viessmann VITODENS 200-W Installation And Service Instructions Manual
Type b2ha, b2ka, 3.2 to 35 kw
gas council no.
-system boilers:
41-819-32; 41-819-33; 41-819-34; 41-819-35
-combi boilers:
47-819-28; 47-819-29; 47-819-30
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Also See for VITODENS 200-W:
- Installation instructions manual (184 pages) ,
- Installation and service instructions manual (180 pages) ,
- Service instructions manual (150 pages)
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Function description
Internal extensions (accessories)
Internal extension H1
The internal extension is integrated into
the control unit casing. 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 oper-
ation)
142
■ 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.
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