Heating Circuit 1", "Heating Circuit 2", "Heating Circuit 3" Group - Viessmann VITOTRONIC 300 Installation And Service Instructions Manual

Code 2, Vitotronic 300-K

"Heating Circuit 1", "Heating Circuit 2", "Heating Circuit 3" Group

Coding
Coding in the factory set condition
A0:0 Without remote control.
A1:0 Only with Vitotrol 200A: All possible settings
at the remote control can be accessed.
A2:2 DHW tank priority applicable to heating circuit
pump and mixing valve.
A3:2 Outside temperature below 34° F (1° C):
Heating circuit pump "ON".
Outside temperature above 37° F (3° C):
Heating circuit pump "OFF".
Note: If a value below 34° F (1° C) is selected, there is a risk that pipes outside the thermal envelope of the building
could freeze up. The standby mode in particular should be taken into consideration, e.g. during holidays.
Parameter Address A3:...
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
1
2
to
15
Coding in the factory set condition
A4:0 With frost protection.
A5:5 With heating circuit pump logic function
(economy circuit): Heating circuit pump
"OFF" when the outside temperature (AT)
is 1 K higher than the set room temperature
(RT ) AT > RT
set
Parameter address A5:...
1
2
3
4
5
6
7
to
15
98
Heating circuit pump
"ON"
14° F (-10° C)
16° F (-9° C)
18° F (-8° C)
19° F (-7° C)
21° F (-6° C)
23° F (-5° C)
25° F (-4° C)
27° F (-3° C)
28° F (-2° C)
30° F (-1° C)
32° F (0° C)
34° F (1° C)
to
57° F (14° C)
+ 1 K.
set
With heating circuit pump logic function: Heating circuit pump "OFF"
AT > RT + 5 K
set
AT > RT + 4 K
set
AT > RT + 3 K
set
AT > RT + 2 K
set
AT > RT + 1 K
set
AT > RT
set
AT > RT - 1 K
set
AT > RT - 9 K
set
Vitotronic 300, GW5B & MW1B Installation and Service
Possible change
A0:1 With Vitotrol 200A; automatic recognition.
A0:2 A0:2 With Vitotrol 300A or Vitohome 300;
automatic recognition.
A1:1 Only party mode can be set at the remote
control.
A2:0 Without DHW tank priority applicable to
heating circuit pump and mixing valve.
A2:1 DHW tank priority applies only to the mixing
valves.
A3:-9 Heating circuit pump "ON/ OFF" (see the
to following table).
A3:15
"OFF"
18° F (-8° C)
19° F (-7° C)
21° F (-6° C)
23° F (-5° C)
25° F (-4° C)
27° F (-3° C)
28° F (-2° C)
30° F (-1° C)
32° F (0° C)
34° F (1° C)
36° F (2° C)
37° F (3° C)
to
61° F (16° C)
Possible change
A4:1 No frost protection; this setting is only
possible if code "A3:-9" has been selected.
Note: Observe information regarding coding
address "A3".
A5:0 Without heating circuit pump logic function.
A5:1 With heating circuit pump logic function:
to Heating circuit pump "OFF"; see the
A5:15 following table.