DAB 1 KDN Instructions Pour L'installation Et La Maintenance page 47

FIRE-FIGHTING SET TO STANDARD EN 12845 – UNI 10779
HYDRAULIC DIAGRAM OF FEED ABOVE HEAD
In installations below water level, the distance between the pump suction port and the tank minimum level must be
less than 3.2 m. A foot valve must be installed for each pump suction port. A priming tank must be installed for
each main pump.
27
26
24
25
22
20
16
8
5
4
3
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 filter
2* Water reserve
3* Foot valve
4 Pump air and recirculating
5* Pipe for pump air and recirculating
Test valve / non return valve
6*
Non return valve
7
8 Non return valve
9 Interception valve on delivery
10 Diaphragm expansion tank
11 Pressure gauge
12 Pilot pump pressure switch
13 Manual test circuit non return valve
28
DELIVERY MANIFOLD
17 17
11
14
15
14
13
12
11
10
9
7
6
3
1 1
ENGLISH
23
21
19
16
14
15
14
13
8
6
4
3
1
14 Pressure switch interception valve
Main pump manual test valve
15
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* Priming line non return valve
21* Flow meter interception valve
Priming line interception valve
22*
Flow meter
23*
24* Tank discharge valve
25*
Tank float
26* Overflow discharge
27* Priming tank
28* Tank topping up
42
27 27
26
24
25
22
20
11
5
28