Viessmann Vitodens 200 Start-Up/Service Instructions page 62

Additional Information
Control Unit for Weather-Responsive Operation
Overview of coding addresses (continued)
Coding (factory default
setting) Address: Value
0A9:098
0B2:___
0B3:___
0B4:___
0B8:000
0C1:011
0C2:008
0C5:000
Possible coding changes for coding address 0C5 "external heat demand"
Coding Heating circuit pump
0C5:000 ON
0C5:001 OFF
0C5:002 ×
0C5:003 OFF
0C5:004 ON
0C5:005 ×
0C5:006 OFF
0C5:007 ON
0C5:008 ×
0C5:009 OFF
0C5:010 ON
0C5:011 ×
× = in normal control mode
* 1 One increment corresponds to approx. 20 rpm.
* 2 This is set automatically when a tank temperature sensor is connected; can be reset to "001" manually if required.
* 3 Once this function has ended, the program changes automatically to the "Space heating and DHW heating" mode.
62
Function mode
Circulating pump
Max. rotational speed of circulating
pump for DHW production
Fault memory (see page 26)
Fault memory (see page 26)
Do not change
Space heating only - no DHW
Freeze-up protection threshold
+34 / +37ºF or +1 / +3ºC
Do not change
Boiler
See table below for effect of
external heat demand signal
(also see page 70)
Heating circuit with mixing valve
(extension kit)
Heating circuit pump
OFF
OFF
OFF
×
×
×
OFF
OFF
OFF
×
×
×
with programming unit
Coding change Possible changes
Address: Value
0A9:001 Lowest value for rotational speed of
to circulating pump for DHW production
0A9:100* 1
Highest value for rotational speed of
circulating pump for DHW production
--
--
--
0B8:001 With DHW heating
0B8:002 Optimum DHW heating (with anti
legionnaire function) (see page46).
0B8:005 Combi boiler only
0B8:006 Not assigned. Must be changed to one
of the other coding addresses.
0C1:000 +50 / +18ºF or +10 / –8ºC
0C1:015 +41 / +45ºF or +5 / +7ºC
--
0C5:001 See table below for effect of external
to heat demand signal
0C5:011
Circulating pump
for tank heating
Mixing valve
CLOSED OFF
CLOSED OFF
CLOSED OFF
× OFF
× OFF
× OFF
CLOSED ×
CLOSED ×
CLOSED ×
× ×
× ×
× ×
Vitodens 200 WB2 Service
(continued)
--
--
--
--
Boiler water
temperature
Maintained at
desired value
according to
coding address
"0A2"