DHW heating by solar collectors
The solar circuit pump will start and
the DHW cylinder will be heated up
when a temperature differential
greater than the starting differential
temperature "DO" set at the Vitosolic
100 is established between the collec-
tor temperature sensor and the cylin-
der temperature sensor S2 or S3.
The pump is switched OFF when the
actual temperature falls below the
stopping temperature differential "DF"
between the collector temperature
sensor and the highest temperature
captured by cylinder sensor S2 or S3.
Internal extension H1
The internal extension is integrated
into the control unit casing. The cylin-
der primary pump is connected to the
relay output
sA
.
An external safety valve can be con-
nected to
gD
.
Vitotronic 200, type HO1
(cont.)
116
Function description
5592
883
GB
Summary of Contents for VITODENS 343-F WS4A
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