Viessmann VITOTRONIC 300 GW2 Installation And Service Instructions Manual page 120

Additional information
Coding 2
(continued)
Overview of all codings (continued)
Coding as per Function2.4
factory setting
Address: Value
1C: 120 Burner
1F: 0 Boiler
21: 0
Boiler/
burner
23: 0 Boiler/
burner
24: 0 Boiler/
burner
26: 0 Boiler/
burner
(2-stage)
27: 0 Boiler/
burner
(2-stage)
28: 0 Boiler/
burner
29: 0 Boiler/
burner
2A: 0 Boiler/
burner
2d: 0 Boiler
40: 125 General
120
Start delay 120 seconds
(only selectable if no
operating signal "B4" is
available at plug fA of the
burner)
No monitoring of flue gas
temperature
No service display for burner 21: 1
No time interval for burner
maintenance
No "Service" display
Fuel consumption of burner
(1st stage);
not metered if "26: 0" and
"27: 0" are coded
Fuel consumption of burner
(1st stage);
not metered if "26: 0" and
"27: 0" are coded
No intermittent ignition of
burner
Fuel consumption of burner
(2nd stage);
not metered if "29: 0" and
"2A: 0" are coded
Fuel consumption of burner
(2nd stage);
not metered if "29: 0" and
"2A: 0" are coded
Shunt pump ON only when
requested
Operating time, 3-way mixing
valve or mixing valve motor
in conjunction with return
temperature control
New coding Possible change
Address:
Value
1C: 1 Start delay adjustable
to from 1 to 199 seconds
1C: 199
1F: 1 With flue gas temperature sensor connected:
to When the flue gas temperature exceeds the
1F: 50 preselected limit value (selectable in the
range from 10 to 500°C / 50 to 932°F),
"Service" is displayed; 1 increment = 10°C /
50°F
The number of burner hours run before the
to "Service" display appears can be set between
21: 100 100 and 10000 hours;
1 increment = 100 hours
23: 1 Time interval variable between 1 and 24 months
to
23: 24
24: 1 The "Service" display appears (address is set
automatically and must be reset manually after
maintenance has been carried out)
26: 1 Input from 0.1 to 9.9;
1 increment = 10 litres or gallons/hour
to
26: 99
27: 1 Input from 10 to 1990;
1 increment = 10 litres or gallons/hour
to
27: 199
28: 1 The burner is automatically switched on for 30
seconds after 5 hours
29: 1 Input from 0.1 to 9.9;
1 increment = 0.1 litre or gallon/hour
to
29: 99
2A: 1 Input from 10 to 1990;
1 increment = 10 litres or gallons/hour
to
2A: 199
2d: 1 Shunt pump ON continuously
40: 5 Operating time adjustable from 5 to 199
to seconds
40: 199