C101 Preheater Coil - Viessmann VITOTRONIC 200 Service Instructions Manual

7D79 Sensor matching, extract air temperature
Recommendation:
Set "Standby mode" for the ventilation unit. After
some time, compare the temperature values of all tem-
perature sensors against each other and/or against a
reference temperature. Set a corresponding correction
value for any deviating temperature sensors.

C101 Preheater coil

Vitovent
200-C 200-W 300-C
X
—
Enabling installed electric preheating coil and/or geo-
thermal heat exchanger
Note
opens the setting wizard.
Bit Meaning
"Bit 1" Factory-fitted electric preheating coil: Is al-
ways set.
"Bit 2" Do not adjust.
"Bit 3" Do not adjust.
"Bit 4" Do not adjust.
C102 Reheater coil
Vitovent
200-C 200-W 300-C
X
—
C105 Humidity sensor
Vitovent
200-C 200-W 300-C
X
—
If a humidity sensor is installed in the central extract air
duct (header), the air flow rate increases or decreases
subject to air humidity.
!
300-F 300-W
X X
—
!
300-F 300-W
X X
—
!
300-F 300-W
X X
—
Parameter group Ventilation
!
(cont.)
≙
Setting 1 0.1 K
Bit Meaning
"Bit 5" Additional electric preheating coil (acces-
sories)
"Bit 6" Do not adjust.
"Bit 7" Geothermal heat exchanger in conjunction
with a 3-way diverter damper (on site)
"Bit 8" Do not adjust.
to
"Bit 15"
The setting value results from the combination of se-
lected bits.
Never adjust
Value Meaning
"0" No central humidity sensor installed.
"1" The central humidity sensor is installed in the
central extract air duct and connected at ter-
minal X4 on the control PCB of the ventilation
unit. Humidity control is enabled.
Function check:
In "Diagnosis"
value greater than 0 % is shown for "Humidi-
ty".
Note
If air humidity control via a the CO
simultaneously active ("Min. voltage, input 1 C1B1",
"Min. voltage, input 2 C1C1"): Control via the central
humidity sensor has priority.
"Ventilation: Overview" a
/humidity sensor is
2
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