Viessmann VITODENS 222-F Service Instructions Manual page 89

Vitodens 222-F B2TA 19 and 35 Service
Control Functions
Fill program
If the system is to be filled with the control unit switched
ON, code "2F:2" starts the pump. The burner shuts down
if this function is enabled via coding address "2F".
The program is automatically disabled after 20 minutes.
and coding address "2F" is reset to "0".
Reducing the heat-up time
During the transition from operation with reduced
room temperature to operation with standard room
temperature, the boiler water or supply temperature will
be raised in accordance with the selected heating curve.
The boiler water or supply temperature can be
automatically increased. The value and duration of the
additional increase of the set boiler water temperature or
supply temperature can be adjusted in coding addresses
"FA" and "FB".
Example using the setting in the delivered condition.
Time in h
A Start of operation with standard room temperature
B Boiler water / supply temperature based on selected
heating curve
C Boiler water / supply temperature based on coding
address "FA": 50° C + 20 % = 60° C
D Duration of operation with raised boiler water /
supply temperature based on coding address "FB":
60 minutes
(continued)
Raising the reduced room temperature
During operation with reduced room temperature, the
reduced room setpoint temperature can be automatically
raised based on the outdoor temperature.
The temperature is raised in accordance with the selected
heating curve, but no higher than the standard room
temperature setpoint. The outdoor temperature limits
for the start and end of the temperature raising can be
adjusted via coding addresses "F8" and "F9".
A Heating curve for operation with standard room
temperature
B Heating curve for operation with reduced room
temperature
Allocating heating circuits to the remote control
The heating circuit allocation must be configured when
commissioning the Vitotrol 200A or Vitotrol 300A.
Heating circuit
The remote control affects the heating
circuit without mixing valve A1
The remote control affects the heating
circuit with mixing valve M2
The remote control affects the heating
circuit with mixing valve M3
Note: One heating circuit can be allocated to the Vitotrol
200A. Up to three heating circuits can be allocated
to the Vitotrol 300A. Up to 2 remote controls may
be connected to the control unit. If the heating
circuit allocation is later cancelled, reset coding
address A0 for this heating circuit to 0 (fault
message BC, BD, BE).
Function Description
Outdoor Temperature
Configuration
Vitotrol Vitotrol
200A 300A
H 1 HC 1
H 2 HC 2
H 3 HC 3
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