Viessmann VITODENS 200 Start-Up And Service Instructions page 56

Additional Information
Control Unit for Weather-Responsive Operation
Overview of coding addresses (continued)
Coding (factory Function mode
default setting)
Address: Value
0A9:098 Circulating
pump
0B2:___ Fault memory (see page 28)
0B3:___ Fault memory (see page 28)
0B4:___ Do not change
0B8:000 Space heating only - no DHW
0C1:011 Freeze-up protection threshold
+34 / +37 ºF or +1 / +3 ºC
0C2:008 Do not change
0C5:000 Boiler
Possible coding changes for coding address 0C5 "external heat demand"
Coding Heating circuit
pump 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.
56
Max. rotational speed of cir-
culating pump for DHW pro-
duction
See table below for effect of
external heat demand signal
(also see page 59)
Heating circuit with mixing valve
(extension kit)
Heating circuit pump
OFF
OFF
OFF
×
×
×
OFF
OFF
OFF
×
×
×
with programming unit
(continued)
Coding Possible changes
change
Address: Value
0A9:001 Lowest value for rotational speed of
to circulating pump for DHW production
*1
0A9:100 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 page 48).
0B8:005 Combi boiler only
0B8:006 Not assigned. Must be changed to one of the
other coding addresses.
0C1:000 +50 / +18 ºF or +10 / –8 ºC
0C1:015 +41 / +45 ºF or +5 / +7 ºC
*3
0C5:001 See table below for effect of external
to heat demand signal
0C5:011
*3
Circulating pump
for tank heating for tank heating
Mixing valve
CLOSED OFF
CLOSED OFF
CLOSED OFF
× OFF
× OFF
× OFF
CLOSED ×
CLOSED ×
CLOSED ×
× ×
× ×
× ×
Boiler water
temperature temperature
Maintained at
desired value d i d l
according to according to
coding address g
"0A2" "0A2"