DAB 1 KDN Instructions Pour L'installation Et La Maintenance page 46

FIRE-FIGHTING SET TO STANDARD EN 12845 – UNI 10779
HYDRAULIC DIAGRAM OF FEED BELOW HEAD
EN 12845 recommends installation below water level, with at least 2/3 of the level of water in the tank above the
pumps' suction port. Each pump has its own suction pipe at least 65 mm long.
6
2 2
* Components and materials NOT included in the supply of the fire-fighting pumps set
P1 Supply pump no. 1
P2 Supply pump no. 2
P3 Pilot Pump
1* Suction interception valve
2* Suction filter
3 Pump air and recirculating
4* Test valve / non return valve
5 Non return valve
6* Water reserve
7 Non return valve
8 Interception valve on delivery
9* Pipe for pump air and recirculating
10 Diaphragm expansion tank
11 Pilot pump pressure switch
16
9
7
2
3
ENGLISH
DELIVERY MANIFOLD
17
17
12
13
15
13
14
11
12
10
8
5
4
3
2 2
1 1
12 Pressure gauge
13 Pressure switch interception valve
14 Manual test circuit non return valve
15 Main pump manual test valve
16 Interception valve on delivery
17 Pressure switch for starting electropump no. 1
18 Pressure switch for starting electropump no. 2
19* Flow meter stub pipe
20* Flow meter interception valve
21* Flow meter
41
21
20
19
FLOW METER STUB PIPE
16
18 18
13
15
13
14
7
4
2
1
12