Viessmann VITOTRONIC 300 Installation And Service Instructions Manual page 84

Code 1, Vitotronic 300-K
"Heating Circuit 1", "Heating Circuit 2", "Heating Circuit 3" Group
Coding in the factory set condition
Extended economy function mixing valve
Weather-compensated/room temperature hook-up
B0:0 With remote control:
Heating mode/reduced mode: weather-
compensated.
Economy function room temperature
B5:0 With remote control:
No room temperature dependent heating circuit
pump logic function.
*2 Only change the code for the system circuit A1 for boilers without lower temperature limit or for the heating circuits
with mixing valve if a remote control is connected to them.
Parameter address B5:...
1
2
3
4
5
6
7
8
Coding in the factory set condition
Min. supply temperature heating circuit
C5:20 Electronic minimum supply temperature limit
68° F (20° C) (only in operation at standard
room temperature).
Max. supply temperature heating circuit
C6:75 Electronic maximum supply temperature limit
set to 167° F (75° C).
Heating program - changeover
D5:0 With external heating program changeover
(observe setting for coding addresses "5D",
"5E" and "5F" in the "General" group).
Heating program switches to "Constant central
heating with reduced room temperature" or
"Standby mode" (subject to the settings of the
set reduced room temperature).
External heating program changeover to heating circuit
D8:0 No heating program changeover via extension
EA1.
84
*2
*2
With heating circuit pump logic function:
Heating circuit pump "OFF"
RT > RT
actual set
RT > RT
actual set
RT > RT
actual set
RT > RT
actual set
RT > RT
actual set
RT > RT
actual set
RT > RT
actual set
RT > RT
actual set
Vitotronic 300, GW5B & MW1B Installation and Service
Possible change
B0:1 Heating mode: weather-compensated
Reduced mode: with room temperature hook-up
B0:2 Heating mode: with room temperature hook-up
Reduced mode: weather-compensated
B0:3 Heating mode/reduced mode: with room
temperature hook-up
B5:1 Heating circuit pump logic function, see the
to following table.
B5:8
Heating circuit pump "ON"
+ 5 K RT
+ 4 K RT
+ 3 K RT
+ 2 K RT
+ 1 K RT
RT
- 1 K RT
- 2 K RT
Possible change
C5:1 Minimum limit adjustable from 32 to 260° F
to (1 to 127° C) (limited by boiler-specific
C5:127 parameters).
C6:10 Maximum limit adjustable from 50 to 260° F
to (10 to 127° C) (limited by boiler-specific
C6:127 parameters).
D5:1 The heating program changes to "Constant
operation with standard room temperature".
D8:1 Heating program changeover via input DE1 at
extension EA1.
D8:2 Heating program changeover via input DE2 at
extension EA1.
D8:3 Heating program changeover via input DE3 at
extension EA1.
(continued)
< RT + 4 K
actual set
< RT + 3 K
actual set
< RT + 2 K
actual set
< RT + 1 K
actual set
< RT
actual set
< RT - 1 K
actual set
< RT - 2 K
actual set
< RT - 3 K
actual set