Airflow Duplexvent Flexi DV1100 Manuale di installazione, uso e manutenzione - Pagina 9

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Especially make sure that the arrow showing the direction of air flow through the filter cassette can be seen from the side of the
operator (the arrow is by the unit´s door) and that it is always pointing toward the heat recovery exchanger!
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The unit is supplied with filter cassette labels unattached. Attach the relevant identification labels near both filters. (e.g. for the
door type)
ATTENTION: Unpack and install air filters last, immediately before putting the unit into service to avoid their contamination.
ATTENTION: Use original filter cassettes only! If different cassettes were used, the manufacturer could not guarantee their proper
function!
Record the date of installing filters appropriately in e.g. the operational
logbook.

5.9 Installation, connecting and filling of liquid manometers (optional accessory)

Liquid manometers are a separately supplied accessory. Manometers are compulsory for hygienic units in compliance with
VDI 6022.
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Manometers are used for measuring the pressure loss of air filters. During installation follow the visual instructions supplied with
this optional accessory. After installation level the manometers horizontally.
Connect the manometers to collection points on the unit's surface using tubes. Connect the tube to the top of the manometer and
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run it to the metal bushing on the unit's surface (also see a separate manometer installation manual). The tube must always
connect two matching connection points identified by symbols "+" and "F+" and "-" and "F-" (cannot be combined). Make sure that
tubes from just one filter are connected to the manometer.
Attach the relevant label near each manometer. Fill out the boxes with the filter grade and record the flow rates and pressure
losses of the clean filter (initial pressure loss) and when clogged (final pressure loss) using data from the table below; the values
must be adjusted on the basis on actual air flow rates through the unit. The unattached label without information filled out is
included.
DUPLEXVENT Flexi DV1100
●
Filter type
Flow rate (m
Initial
loss (Pa)
F7
Final pressure loss
(Pa)
Initial
loss (Pa)
F5
Final pressure loss
(Pa)
DUPLEXVENT Flexi DV1600
Filter type
Flow rate (m
Initial
loss (Pa)
F7
Final pressure loss
(Pa)
Initial
loss (Pa)
F5
Final pressure loss
(Pa)
DUPLEXVENT Flexi DV2600
Filter type
Flow rate (m
Initial
loss (Pa)
F7
Final pressure loss
(Pa)
Initial
loss (Pa)
F5
Final pressure loss
(Pa)
DUPLEXVENT Flexi DV3600
Filter type
Volume flow
rate (m
Initial pressure
loss (Pa)
F7
Final pressure
loss (Pa)
Initial pressure
loss (Pa)
F5
Final pressure loss
(Pa)
3
/h)
250
pressure
200
pressure
200
3
/h)
400
pressure
16
200
pressure
6
200
3
/h)
500
pressure
10
200
pressure
1
200
700
3
/h)
14
200
3
200
500
200
200
800
43
200
14
200
1000
1500
34
60
200
200
8
17
200
200
1400
2100
40
77
200
200
11
24
200
200
9
750
1000
1100
200
200
200
200
1200
1500
1600
84
126
200
200
25
38
200
200
2000
2500
91
125
200
200
29
44
200
200
2800
3500
126
186
200
200
42
65
200
200
200
200
142
200
43
200
2600
133
200
47
200
3600
196
200
69
200