Viessmann VITOTRONIC 300 GW2 Installation And Service Instructions Manual page 115

Coding 1
(continued)
Codings (continued)
Function Coding as per factory setting
Address: Value
Burner type 02: 1
Two-stage
Gas/oil-fired 03: 0
Gas-fired operation
operation
Burner(modulating). 05: 70 ( g)
Burner curve
Max. boiler temp. 06: 87
Max. boiler water temperature limited to
87°C / 189°F
General 40: 125
Operating time of 3-way mixing valve or
mixing valve motor in conjunction with
return temperature control
Participant number 77: 1
LON participant number
DHW priority p y A2: 2
A1/M2/M3 With DHW tank priority control
Summer energy A5: 5
saving function With heating circuit pump logic function
A1/M2/M3 (HPL function)
Min. supply temp. C5: 20
A1/M2/M3 Electronic minimum supply temperature
limit 20°C / 68°F
Max. supply temp. C6: 75
A1/M2/M3 Maximum supply temperature limited to
75°C / 167°F
*1
The factory setting is determined by the boiler coding card.
*2
This setting is matched to the Vitocrossal.
Additional information
Possible change
02: 0 Two-stage
Modulating
02: 2
03: 1 Oil-fired operation
(coding cannot be reset)
05: 0 Burner curve - linear
05: 1 Burner curve not linear
to (P : P ) x 100%
T max
05: 99 PT in kW: partial output at 1/3 of run time
P in kW: maximum output
max
06: 20 Maximum boiler water temperature limit
to variable between 20 and 127°C / 68 and
06: 127 261°F
40: 5 Operating time variable
to from 5 to 199 seconds
40: 199
77: 1 LON participant number
to selectable from 1 to 99
77: 99 Please note:
Each number may be assigned once only.
A2: 0 Without DHW tank priority control
A2: 1 Without function
A2: 3 A2: 3
to
A2: 15
A5: 0 Without heating circuit pump logic function
(HPL function)
C5: 1 Electronic minimum supply temperature
to limit variable between 1 and 127°C / 34
C5: 127 and 127°F
C6: 10 Maximum supply temperature limit variable
to between 10 and 127°C / 50 and 127°F
C6 :127
115