Heating Circuit 1, Heating Circuit 2, Heating Circuit 3" Group - Viessmann VITOTRONIC 200 Installation And Service Instructions Manual

Vitotronic 200 and 300-K Installation and Service

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

Coding
Coding in the factory set condition
A0:0 Without remote control
A1:0 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 insulation 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
Heating circuit pump "ON"
14° F (–10° C)
16° F (–9° C)
18° F (–8° C)
19.5° F (–7° C)
21° F (–6° C)
23° F (–5° C)
25° F (–4° C)
27° F (–3° C)
28.5° F (–2° C)
30° F (–1° C)
32° F (0° C)
34° F (+1° C)
to
57° F (+14° C)
Possible change
A0:1 With Vitotrol 200A (automatic recognition)
A0:2 With Vitotrol 300A or Vitohome 300
(automatic recognition)
A1:1 Only party mode can be set at the remote
control (only for Vitotrol 200A)
A2:0 Without DHW tank priority applicable
to heating circuit pump and mixing valve
A2:1 DHW tank priority only applicable to mixing
valve
A2:3 No function.
to
A2:15
A3:-9 Heating circuit pump "ON/ OFF"
to (see the following table)
A3:15
Heating circuit pump
Heating circuit pump "OFF"
18° F (–8° C)
19.5° F (–7° C)
21° F (–6° C)
23° F (–5° C)
25° F (–4° C)
27° F (–3° C)
28.5° F (–2° C)
30° F (–1° C)
32° F (0° C)
34° F (+1° C)
36° F (+2° C)
27° F (+3° C)
to
61° F (+16° C)
Code 2
59