Viessmann VITOTRONIC300 Installation And Service Instructions Manual page 117

Vitotronic 300, GW2B Installation and Service
"Heating Circuit 1", "Heating Circuit 2", "Heating Circuit 3" Group
Coding in the factory set condition
b0:0 With remote control:
Heating mode/reduced mode: weather-
compensated.
b2:8 With remote control and for the heating
circuit, operation with room temperature
hook-up must be programmed:
Room influence factor 8.
b5:0 With remote control:
No room temperature dependent heating
circuit pump logic function.
Parameter address b5:...
1
2
3
4
5
6
7
8
Coding in the factory set condition
b6:0 With remote control:
Without quick heat-up/ quick setback.
b7:0 With remote control and for the heating
circuit, operation with room temperature
hook-up must be programmed:
Without start optimization.
b8:10 With remote control and for the heating
circuit, operation with room temperature
hook-up must be programmed:
Heat-up gradient start optimization 10 min/K.
b9:0 With remote control and for the heating
circuit, operation with room temperature
hook-up must be programmed:
Without learning start optimization.
*2 Only change the code for the heating circuit A1 for boilers without lower temperature limit or for the heating circuits
with mixing valve if a remote control is connected to them.
*2
*2
*2
With heating circuit pump logic function:
Heating circuit pump "OFF"
RT > RT + 5 K
actual set
RT > RT + 4 K
actual set
RT > RT + 3 K
actual set
RT > RT + 2 K
actual set
RT > RT + 1 K
actual set
RT > RT
actual set
RT > RT - 1 K
actual set
RT > RT - 2 K
actual set
*2
*2
*2
*2
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
b2:0 Without room influence.
b2:1 Room influence factor adjustable from
to 1 to 64.
b2:64
b5:1 Heating circuit pump logic function,
to see the following table.
b5:8
Heating circuit pump "ON"
RT
actual
RT
actual
RT
actual
RT
actual
RT
actual
RT
actual
RT
actual
RT
actual
Possible change
b6:1 With quick heat-up/quick setback (see
function description on page 105).
b7:1 With start optimization, max. heat-up time
delay 2 h 30 min.
b7:2 With start optimization, max. heat-up time
delay 15 h 50 min.
b8:11 Heat-up gradient adjustable from 11 to 255
to min/K.
b8:255
b9:1 With learning start optimization.
Code 2
(continued)
< RT + 4 K
set
< RT + 3 K
set
< RT + 2 K
set
< RT + 1 K
set
< RT
set
< RT - 1 K
set
< RT - 2 K
set
< RT - 3 K
set
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