Viessmann B2TB, Installation And Service Instructions For Contractors

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"System scheme"
Setting Explanations
One heating circuit without mixer A1 (heat-
ing circuit 1) with DHW heating 00:2 Value is set automatically
One heating circuit with mixer M2 (heating
circuit 2) with DHW heating 00:4 Set the value manually if the system is not equipped
with a heating circuit without mixer.
One heating circuit without mixer A1 (heat-
ing circuit 1) and one heating circuit with
mixer M2 (heating circuit 2), with DHW
heating 00:6 Value is set automatically
One heating circuit with mixer M2 (heating
circuit 2) and one heating circuit with mixer
M3 (heating circuit 3), with DHW heating 00:8 Set the value manually if the system is not equipped
with a heating circuit without mixer.
One heating circuit without mixer A1 (heat-
ing circuit 1), one heating circuit with mixer
M2 (heating circuit 2) and one heating cir-
cuit with mixer M3 (heating circuit 3), with
DHW heating 00:10 Value is set automatically
"Burner control unit parameter access rights"
Setting Explanations
No 11:0 Access to combustion control parameters is blocked
Yes 11:9 Access to combustion control parameters is open
"Outside temperature sensor for constant temp. control"
Setting Explanations
Only if control unit has been changed to constant tem-
perature mode.
No outside temperature sensor 25:0
Outside temperature sensor available 25:1 If an outside temperature sensor is connected to the
control unit.
"Wireless outside temperature sensor"
Setting Explanations
Without wireless outside temperature sen-
sor 2A:0
With wireless outside temperature sensor 2A:1 Value is set automatically upon detection
Wireless outside temperature sensor is not
used 2A:2
2A:3 Do not adjust
"Show energy consumption"
Setting Explanations
No 2B:0
Yes 2B:1
"Extension AM1"
Setting Explanations
Without 32:0
With 32:1 Value is set automatically upon detection
Parameter level 2
General
(cont.)
5789 302 GB
Parameter