C1A3 Specified Imbalance - Viessmann VITOTRONIC 200 Service Instructions Manual

Parameter group Ventilation
C1A2 Imbalance permitted
Value Meaning
"0" Supply air and extract air flow rates are re-
■
duced for frost protection.
Both fans are switched off to protect against
■
excessively high temperatures.
Only Vitovent 300-C/300-W:
■
No increase or decrease of the supply air
stream in comparison to the extract air
stream: Supply air and extract air flow rate
in the ventilation unit are always the same.
"1" Only the supply air flow rate is reduced for
■
frost protection.
Only the supply air fan is switched off to
■
protect against excessively high tempera-
tures.
Only Vitovent 300-C/300-W:
■
The supply air flow rate can be increased or
decreased compared to the extract air flow
rate using "Specified imbalance C1A3".

C1A3 Specified imbalance

Vitovent
200-C 200-W 300-C
— —
Due to the conditions in the building, an unwanted flow
rate differential (disbalance) may occur between the
supply air and extract air side, e.g. through different
lengths of pipework for outdoor/supply air and extract/
exhaust air.
To even out any imbalance, the supply air flow rate can
be increased or decreased compared to the extract air
flow. This is specified on the ventilation unit using
"Specified imbalance C1A3".
C1A4 Set reheater coil temperature
Vitovent
200-C 200-W 300-C
X
—
C1A6 Humidity sensor sensitivity
Vitovent
200-C 200-W 300-C
X
—
264
!
(cont.)
!
300-F 300-W
X X
—
!
300-F 300-W
X X
—
!
300-F 300-W
X X
—
Requirement: "Imbalance permitted C1A2" is set to
"1".
Value Meaning
" 100" For positive pressure in the building: Supply
–
to " 1" air flow rate is decreased by the set value.
–
"0" Supply air flow rate and extract air flow rate
are equal.
"1" to For negative pressure in the building: Supply
"100" air flow rate is increased by the set value.
3
Setting in m /h
Never adjust
Sensitivity of the central humidity sensor (accessories):
The sensitivity of the humidity control (response char-
acteristics) can be adjusted if a humidity sensor is
installed in the central extract air duct (header)
("Humidity sensor C105" is set to "1").
For this a setting range of "
(more sensitive) is available.
2" (less sensitive) to "+2"
–