Viessmann VITOTRONIC 200 Quick Reference Manual page 5

Coding Addresses
The following is an overview of commonly used coding addresses of the Vitotronic 200 control. For a complete listing of all
coding addresses, please see page 84 of the Vitotronic 200 Service Instructions.
To access and exit coding level 2 press
Note that all codings can be changed via coding level 2.
Function
System type
*1
Coding address is automatically changed when DHW sensor #5 or strap-on sensor #2 are plugged in.
Boiler control functions
See pages 44 to 46 in the Vitotronic 200 Service Instructions for a detailed description of all boiler functions.
Function
Switching hysteresis for the
burner
Differential temperature of
boiler above that of mixing
valve circuit
Maximum operating hours
for service display
Time interval for service
display
Service display
and simultaneously and hold.
Factory default setting
Address: Value
00 : 1 High temperature
circuit, no mixing
valve, no DHW
storage tank
Factory default setting
Address: Value
04 : 0 Fixed switching hysteresis
7ºF/4ºC
05 : 8 Boiler temperature differential
15 ºF/-9.1 ºC above mixing valve
curve
21 : 0 No monitoring of burner operating
hours for "Service" display
23 : 0 No time interval for burner
maintenance
24 : 0 No "Service" display
Possible change
Address: Value
00 : 2 High temperature htg. with DHW tank
00 : 3 Low temperature htg., mix. valve only
00 : 4 Low temp. htg., mix. valve and DHW tank
00 : 5 High temp. and mixing valve heating
00 : 6 High temp. htg. mixing valve and DHW tank
04 : 1
04 : 2
05 : 0
to
05 : 40
21 : 1
to
21:9999
23 : 1
to
23 : 24
24 : 1
Quick Reference Guide Quick Reference Guide
System
Recognition
automatic
manual
manual
automatic
automatic
Possible change
Address: Value
Heat demand-controlled switching hys-
teresis variable between 11 and
22ºF/6 and 12ºC.
Heat demand-controlled switching hys-
teresis variable between 11 and 36ºF
/6 and 20ºC.
Boiler differential temperature variable
from 0 to 72ºF/ 0 to 40ºC (each 1ºC =
approx. 1.8ºF)
The number of burner hours run before
the "Service" display appears can be
set between 1 and 9999 hours (when
the preselected number of burner
hours run is exceeded, coding "24 : 0"
is automatically set to "24 : 1").
Time interval variable between 1 and
24 months (when the time interval is
exceeded, coding "24 : 0" is automati-
cally set to "24 : 1").
The "Service" display appears (ad-
dress is set automatically and must be
reset manually after maintenance has
been performed)
*1
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