Heating Circuit 1, Heating Circuit 2, Heating Circuit 3/Group "5 - Viessmann Vitodens 200-W Series Installation And Service Instructions Manual

Code 2
Solar/group "4"
(cont.)
Coding in the delivered condition
22:8 Start temperature differential with
central heating backup (code
"20:4" must be selected) 8 K.
23:4 Stop temperature differential with
central heating backup (code
"20:4" must be selected) 4 K.
24:40 Start temperature for thermostat
function (code "20:5" or "20:6"
must be selected) 40 °C.
25:50 Stop temperature for thermostat
function (code "20:5" or "20:6"
must be selected) 50 °C.
26:1 Priority for DHW cylinder 1 with
cyclical heating.
(Code "20:9" must be selected).
27:15 Cyclical heating time 15 min.
The DHW cylinder without priority
is heated at most for the duration
of the set cyclical heating time if
the DHW cylinder with priority is
heated up.
28:3 Cyclical pause time 3 min.
After the selected cyclical heating
time for the DHW cylinder without
priority has expired, the rise in col-
lector temperature is captured dur-
ing the cyclical pause time.

Heating circuit 1, heating circuit 2, heating circuit 3/group "5"

Select "Heating circuit ..." for weather-compensated
control units (see page 54).
64
Possible change
20:5 Thermostat function.
20:6 Thermostat function and auxiliary
function.
20:7 Solar heating via external heat ex-
changer without additional tempera-
ture sensor.
20:8 Solar heating via external heat ex-
changer with additional temperature
sensor.
20:9 Solar heating of two DHW cylinders.
22:2 Start temperature differential adjust-
to able from 2 to 30 K.
22:30
23:2 Stop temperature differential adjust-
to able from 1 to 29 K.
23:30
24:0 Start temperature for thermostat
to function adjustable from 0 to 100 K.
24:100
25:0 Stop temperature for thermostat
to function adjustable from 0 to 100 K.
25:100
26:0 Priority for DHW cylinder 1 without
cyclical heating.
26:2 Priority for DHW cylinder 2 without
cyclical heating.
26:3 Priority for DHW cylinder 2 with cy-
clical heating.
26:4 Cyclical heating without priority for
either DHW cylinder.
27:5 The cyclical heating time is adjusta-
to ble from 5 to 60 min.
27:60
28:1 Cyclical pause time adjustable from
to 1 to 60 min.
28:60
Select "5" for constant temperature control unit (see
page 54).