43
VTS reserves the right to implement changes without prior notice
Ventus Air Handling Units
Table 13. Bag filters used in AHU VS 21-650
AHU
size
Number of B.FLT bag filters with AxB dimensions for a
filtration section
592x287 592x592 428x428 490x490 490x592 428x287
VS 21
-
-
-
-
-
2
VS 30
-
-
2
-
-
-
VS 40
-
-
-
2
-
-
VS 55
-
2
-
-
-
-
VS 75
-
-
3
-
-
3
VS 100
-
-
-
3
-
3
VS 120
3
3
-
-
-
-
VS 150
-
-
-
8
-
-
VS 180
-
-
-
-
8
-
VS 230
-
8
-
-
-
-
VS 300
-
-
-
15
-
-
VS 400
-
-
-
6
12
-
VS 500
-
-
-
7
14
-
VS 650
6
18
-
-
-
-
Table 14. Panel filters used in AHU VS 21-650
AHU size
Number of panel filters P.FLT G 4 for a filtration section
Size
Amount
Size
Amount
AxB
pcs
AxB
pcs
VS 21
362 x 441
2
VS 30
394 x 495
2
VS 40
495 x 495
1
492 x 594
1
VS 55
394 x 622
3
VS 75
362 x 441
6
VS 100
394 x 495
6
VS 120
391 x 594
6
VS 150
445 x 622
3
495 x 622
3
VS 180
495 x 495
4
495 x 622
4
VS 230
492 x 594
4
594 x 594
8
VS 300
394 x 622
4
495 x 622
8
VS 400
394 x 495
6
495 x 622
12
VS 500
394 x 495
7
495 x 622
14
VS 650
492 x 594
12
594 x 594
12
7.3 Heat exchangers
7.3.1 Water and glycol heater
Operating water heaters should be equipped with anti-frost system. Optionally, in winter period
replace heating medium of the heater with antifreeze medium (e.g.: glycol solution). In case of
cutting off inflow of heating medium or operational standstill of the AHU and if air temperature may
drop below + 5ºC, the heater should be emptied.
In order to do so, please:
- close the valves at the heating agent’s inflow and outflow (cut the heater off from the heating
system)
- move the inspection panel towards the safety valves
- unscrew the drain and the vent plug from collectors
- connect the outflow hose to the drain to let the water go out of the drained exchanger outside the
AHU
- blow through the heater with compressed air connected to the vent
L=300 for G4 and F5 class filters
L=600 for F7 and F9 class filters
