Viessmann Vitotronic 200 Operating Instructions Manual page 42

Mechanical ventilation
Ventilation without heat recovery
Setting the minimum temperature for ventilation
Applies to Vitovent 200-C and Vitovent 300-F only.
Factory setting: 16 °C
As soon as the outdoor air temperature at the inlet to
the ventilation unit exceeds the minimum temperature
set here, ventilation without heat recovery can take
place.
Note
The lower the setting for this temperature, the higher
the risk of condensate build-up on the outside of the
ductwork. This condensate build-up can cause dam-
age to the building.
Time program
Further information can be found in chapter
"Terminology" in the appendix.
Setting a time program for ventilation
Factory setting: one time phase from 00:00 to 24:00 h
for every day of the week with the "Standard" operat-
ing status
Note
We recommend maintaining the factory setting, par-
■
ticularly if your heating circuit HC1 is a ventilation
heating circuit.
■ The time program for ventilation is only active in the
"Ventilation program" operating program.
1. Extended menu:
2. "Ventilation"
3. "Time prog ventilation"
4. Set the required time phases and operating status.
To see how to set a time program: see page 21.
Note
Between the set time phases, mechanical ventilation
takes place with the minimum air flow rate (
Operating status for ventilation
"Reduced" ( )
2
■ Reduced air flow rate:
Approx. 70 % of the standard flow rate: see "Stand-
ard".
42
(cont.)
1. Extended menu:
2. "Ventilation"
3. "Min supply air t. byp"
4. Set the required value.
"Standard" (
■ Standard air flow rate
"Intensive" (
■ Maximum air flow rate:
Approx. 125 % of the standard flow rate: see
"Standard".
Note
■ The air flow rates for "Reduced", "Standard" and
"Intensive" mode are set by your contractor.
To ensure consistently good air quality, the air flow
■
rates can be automatically increased or decreased
during operation in the "Reduced" or "Standard"
operating statuses:
– If a CO
in one of your rooms, the air flow rate is adjusted
subject to the humidity and/or carbon dioxide con-
centration (CO
If a humidity sensor (accessories) is installed in the
–
central extract air duct, the air flow rate is adjusted
subject to the humidity of the air extracted from all
rooms.
).
1
)
3
)
4
/humidity sensor (accessories) is installed
2
) of this room.
2