Wilo FLA Compact Notice De Montage Et De Mise En Service page 34

English
Captions
Fig. 1a Example FLA Compact-1 Helix V16
Fig. 1b Example FLA Compact-2 Helix V16
1 Pump
2 Control device
3 Base frame
5 Pressure connection/pressure collecting pipe
6 Shut-off device
7 Non-return valve
8 Diaphragm expansion tank
9 Pressure gauge
10 Upright support bracket
11 Shut-off device
12 Pressure switch
12A Pressure switch 1
12B Pressure switch 2
12C Pressure switch 3
13 Drain/venting
14 Throughflow fitting/shut-off device
15 Bypass connection (on the pressure side)
15a Bypass connection (on pump side)
15b Bypass connection (on the VBH side)
17 Compensator
18 Flow restrictor
28 Wilo break tank (VBH)
30 Float valve
42 Connection socket for float switch
X21 : FLA Compact-1
A-X21, B-X21 : FLA Compact-2
52 Plug - bush connection low water and
overflow
X20 : FLA Compact-1
A-X20, B-X20 : FLA Compact-2
Fig. 2a Pressure switch and diaphragm pressure
vessel kit FLA Compact-1
Fig. 2b Pressure switch and diaphragm pressure
vessel kit FLA Compact-2
5 Pressure connection/pressure collecting pipe
8 Diaphragm expansion tank
9 Pressure gauge
12 Pressure switch
12A Pressure switch 1
12B Pressure switch 2
12C Pressure switch 3
13 Drain/venting
14 Throughflow fitting/shut-off device
16 Stop valve
20
Fig. 3 Pressure switch, type FF
(changeover contact)
19 Adjusting screw for deactivation pressure
(upper switching point)
20 Adjusting screw for differential pressure
(lower switching point)
21 Earth connection (PE)
22 Terminal block/contacts
24 Scale for switch-off pressure
25 Scale for differential pressure
Fig. 4a Operation throughflow fitting FLA
Compact-1/FLA-Compact 2
Fig. 4b Diaphragm pressure vessel pressure test
A Opening/closing
B Drain
C Checking the supply pressure
Fig. 5 Reference table for nitrogen pressure
Diaphragm pressure vessel (example)
a Nitrogen pressure according to the table
b Start-up pressure, base-load pump, in bar PE
c Nitrogen pressure in bar PN 2
d Nitrogen measurement without water
e Attention! Introduce nitrogen only
Fig. 6a Hydraulic diagram FLA Compact-1
Fig. 6b Hydraulic diagram FLA Compact-2
1 Pump
2 Control device
4 Inlet connection (connection VBH with
suction side pump)
5 Pressure connection/pressure collecting pipe
6 Shut-off device
7 Non-return valve
8 Diaphragm expansion tank
9 Pressure gauge
11 Needle-type throttle
12 Pressure switch
12A Pressure switch 1
12B Pressure switch 2
12C Pressure switch 3
14 Throughflow fitting/shut-off device
15 Bypass
16 Stop valve
17 Compensator
18 Flow restrictor
26 Flexible connection (e.g. Wilo compensator,
Wilo flexi hose)
28 Wilo break tank (VBH)
29 Low-water signal transmitter
30 Float valve
31 Wilo automatic flushing apparatus
32 External command device (e.g. limit switch)
33 Signal(s) to BMS
34 Outlet valve in bypass passage
35 Infiltration water supply for fire brigade
WILO SE 07/2019