Viessmann H32E, Инструкция по установке и обслуживанию, Страница: 68 / 80

68
B
C
A
D
Fig. 107
A
Supply air/extract air vent
B
Measuring funnel with defined cross-section for
determining the air speed
C
Impeller air speed meter
D
Test at the floor outlet without measuring funnel:
Where available, the test can also be carried out
with a suitable measuring funnel.
1. Start nominal ventilation (ventilation level 3).
■
Operating instructions for ventilation unit
■
Operating instructions "Vitodens" and
"Vitosolar 300-F"
■
Operating instructions "Vitotronic 200, type
WO1C"
2. If installed, switch off the following functions:
■
Monitoring of humidity
■
Monitoring of CO
2
concentration
■
Supply air heating via reheating coil
■
Operating instructions "Ventilation pro-
gramming unit, type LB1"
■
Operating instructions "Vitodens" and
"Vitosolar 300-F"
■
Operating instructions "Vitotronic 200, type
WO1C"
3. With an impeller air speed meter, check the air
speed (or the air flow rate directly) at the supply air
and extract air vents. Observe the instructions of
the test equipment manufacturer.
Record actual values in the commissioning report.
Note
Use measuring funnel
B
for supply air and extract
air vents. This enables the entire air flow rate at the
annular gap of the supply air/extract air vent to be
captured.
Where a measuring funnel cannot be used, for
example in larger supply air or extract air apertures
(such as floor outlets), carry out several tests
across the area and calculate an average value.
Note
Adjusting air flow rates with the use of an impeller
air speed meter will
not provide high accuracy.
Deviations of
±
10 % are possible. What is impor-
tant is the proportional distribution of the air flow
rates for the supply air and the extract air areas.
4. Determine the deviation between the calculated
(from engineering plans) and actual air flow rates.
5. Adjust the supply air/extract air apertures in
accordance with the deviation.
Record the new aperture widths/annular gap in the
commissioning report.
6. Repeat the air speed/flow rate test. Check read-
justment.
Record the new values in the commissioning
report.
7. Fix the supply air/extract air apertures after the
final adjustment (if necessary fix with a locknut).
8. If previously disabled, re-enable monitoring of the
humidity and CO
2
concentration.
■ Operating instructions "Ventilation pro-
gramming unit, type LB1"
■ Operating instructions "Vitodens" and
"Vitosolar 300-F"
■ Operating instructions "Vitotronic 200, type
WO1C"
Commissioning, inspection, maintenance
Adjusting the air flow rates
5831646